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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the QtOpenGL module of the Qt Toolkit. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 #include <qdebug.h> |
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43 #include <private/qfontengine_p.h> |
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44 #include <qmath.h> |
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45 #include <private/qmath_p.h> |
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46 #include <private/qdrawhelper_p.h> |
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47 #include <private/qpaintengine_p.h> |
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48 #include "qapplication.h" |
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49 #include "qbrush.h" |
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50 #include "qgl.h" |
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51 #include <private/qgl_p.h> |
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52 #include <private/qglpaintdevice_p.h> |
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53 #include <private/qpainter_p.h> |
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54 #include "qmap.h" |
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55 #include <private/qpaintengine_opengl_p.h> |
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56 #include <private/qdatabuffer_p.h> |
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57 #include "qpen.h" |
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58 #include "qvarlengtharray.h" |
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59 #include <private/qpainter_p.h> |
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60 #include <private/qglpixelbuffer_p.h> |
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61 #include <private/qbezier_p.h> |
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62 #include <qglframebufferobject.h> |
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63 |
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64 #include "private/qtessellator_p.h" |
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65 |
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66 #include "util/fragmentprograms_p.h" |
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67 |
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68 #ifdef Q_WS_QWS |
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69 #include "private/qglwindowsurface_qws_p.h" |
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70 #include "qwsmanager_qws.h" |
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71 #include "private/qwsmanager_p.h" |
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72 #endif |
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73 |
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74 #ifdef QT_OPENGL_ES_1_CL |
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75 #include "qgl_cl_p.h" |
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76 #endif |
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77 |
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78 #define QGL_FUNC_CONTEXT QGLContext *ctx = const_cast<QGLContext *>(device->context()); |
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79 |
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80 #include <stdlib.h> |
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81 #include "qpaintengine_opengl_p.h" |
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82 |
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83 QT_BEGIN_NAMESPACE |
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84 |
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85 extern QImage qt_imageForBrush(int brushStyle, bool invert); //in qbrush.cpp |
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86 #ifdef QT_MAC_USE_COCOA |
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87 extern void *qt_current_nsopengl_context(); // qgl_mac.mm |
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88 #endif |
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89 |
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90 #define QREAL_MAX 9e100 |
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91 #define QREAL_MIN -9e100 |
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92 |
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93 extern int qt_next_power_of_two(int v); |
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94 |
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95 #define DISABLE_DEBUG_ONCE |
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96 |
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97 //#define DEBUG_DISPLAY_MASK_TEXTURE |
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98 |
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99 #ifdef DISABLE_DEBUG_ONCE |
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100 #define DEBUG_OVERRIDE(state) ; |
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101 #define DEBUG_ONCE_STR(str) ; |
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102 #define DEBUG_ONCE if (0) |
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103 #else |
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104 static int DEBUG_OVERRIDE_FLAG = 0; |
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105 static bool DEBUG_TEMP_FLAG; |
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106 #define DEBUG_OVERRIDE(state) { state ? ++DEBUG_OVERRIDE_FLAG : --DEBUG_OVERRIDE_FLAG; } |
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107 #define DEBUG_ONCE if ((DEBUG_TEMP_FLAG = DEBUG_OVERRIDE_FLAG) && 0) ; else for (static int DEBUG_ONCE_FLAG = false; !DEBUG_ONCE_FLAG || DEBUG_TEMP_FLAG; DEBUG_ONCE_FLAG = true, DEBUG_TEMP_FLAG = false) |
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108 #define DEBUG_ONCE_STR(str) DEBUG_ONCE qDebug() << (str); |
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109 #endif |
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110 |
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111 static inline void qt_glColor4ubv(unsigned char *col) |
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112 { |
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113 #ifdef QT_OPENGL_ES |
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114 glColor4f(col[0]/255.0, col[1]/255.0, col[2]/255.0, col[3]/255.0); |
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115 #else |
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116 glColor4ubv(col); |
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117 #endif |
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118 } |
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119 |
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120 struct QT_PointF { |
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121 qreal x; |
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122 qreal y; |
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123 }; |
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124 |
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125 struct QGLTrapezoid |
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126 { |
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127 QGLTrapezoid() |
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128 {} |
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129 |
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130 QGLTrapezoid(qreal top_, qreal bottom_, qreal topLeftX_, qreal topRightX_, qreal bottomLeftX_, qreal bottomRightX_) |
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131 : top(top_), |
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132 bottom(bottom_), |
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133 topLeftX(topLeftX_), |
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134 topRightX(topRightX_), |
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135 bottomLeftX(bottomLeftX_), |
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136 bottomRightX(bottomRightX_) |
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137 {} |
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138 |
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139 const QGLTrapezoid translated(const QPointF &delta) const; |
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140 |
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141 qreal top; |
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142 qreal bottom; |
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143 qreal topLeftX; |
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144 qreal topRightX; |
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145 qreal bottomLeftX; |
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146 qreal bottomRightX; |
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147 }; |
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148 |
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149 const QGLTrapezoid QGLTrapezoid::translated(const QPointF &delta) const |
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150 { |
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151 QGLTrapezoid trap(*this); |
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152 trap.top += delta.y(); |
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153 trap.bottom += delta.y(); |
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154 trap.topLeftX += delta.x(); |
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155 trap.topRightX += delta.x(); |
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156 trap.bottomLeftX += delta.x(); |
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157 trap.bottomRightX += delta.x(); |
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158 return trap; |
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159 } |
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160 |
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161 |
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162 class QOpenGLImmediateModeTessellator; |
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163 class QGLMaskGenerator; |
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164 class QGLOffscreen; |
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165 |
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166 class QGLMaskTextureCache |
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167 { |
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168 public: |
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169 void setOffscreenSize(const QSize &offscreenSize); |
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170 void setDrawableSize(const QSize &drawableSize); |
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171 |
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172 struct CacheLocation { |
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173 QRect rect; |
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174 int channel; |
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175 |
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176 QRect screen_rect; |
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177 }; |
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178 |
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179 struct CacheInfo { |
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180 inline CacheInfo(const QPainterPath &p, const QTransform &m, qreal w = -1) : |
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181 path(p), matrix(m), stroke_width(w), age(0) {} |
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182 |
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183 QPainterPath path; |
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184 QTransform matrix; |
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185 qreal stroke_width; |
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186 |
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187 CacheLocation loc; |
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188 |
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189 int age; |
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190 }; |
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191 |
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192 struct QuadTreeNode { |
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193 quint64 key; |
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194 |
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195 int largest_available_block; |
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196 int largest_used_block; |
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197 }; |
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198 |
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199 CacheLocation getMask(QGLMaskGenerator &maskGenerator, QOpenGLPaintEnginePrivate *engine); |
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200 |
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201 typedef QMultiHash<quint64, CacheInfo> QGLTextureCacheHash; |
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202 |
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203 enum {block_size = 64}; |
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204 |
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205 // throw out keys that are too old |
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206 void maintainCache(); |
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207 void clearCache(); |
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208 |
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209 private: |
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210 quint64 hash(const QPainterPath &p, const QTransform &m, qreal w); |
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211 |
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212 void createMask(quint64 key, CacheInfo &info, QGLMaskGenerator &maskGenerator); |
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213 |
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214 QSize offscreenSize; |
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215 QSize drawableSize; |
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216 |
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217 QGLTextureCacheHash cache; |
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218 |
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219 QVector<QuadTreeNode> occupied_quadtree[4]; |
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220 |
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221 void quadtreeUpdate(int channel, int node, int current_block_size); |
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222 void quadtreeAllocate(quint64 key, const QSize &size, QRect *rect, int *channel); |
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223 |
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224 bool quadtreeFindAvailableLocation(const QSize &size, QRect *rect, int *channel); |
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225 void quadtreeFindExistingLocation(const QSize &size, QRect *rect, int *channel); |
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226 |
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227 void quadtreeInsert(int channel, quint64 key, const QRect &rect, int node = 0); |
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228 void quadtreeClear(int channel, const QRect &rect, int node = 0); |
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229 |
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230 int quadtreeBlocksize(int node); |
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231 QPoint quadtreeLocation(int node); |
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232 |
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233 QOpenGLPaintEnginePrivate *engine; |
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234 }; |
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235 |
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236 Q_GLOBAL_STATIC(QGLMaskTextureCache, qt_mask_texture_cache) |
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237 |
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238 class QGLOffscreen : public QObject |
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239 { |
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240 Q_OBJECT |
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241 public: |
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242 QGLOffscreen() |
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243 : QObject(), |
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244 offscreen(0), |
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245 ctx(0), |
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246 mask_dim(0), |
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247 activated(false), |
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248 bound(false) |
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249 { |
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250 connect(QGLSignalProxy::instance(), |
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251 SIGNAL(aboutToDestroyContext(const QGLContext *)), |
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252 SLOT(cleanupGLContextRefs(const QGLContext *))); |
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253 } |
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254 |
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255 inline void setDevice(QPaintDevice *pdev); |
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256 |
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257 void begin(); |
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258 void end(); |
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259 |
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260 inline void bind(); |
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261 inline void release(); |
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262 |
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263 inline bool isBound() const; |
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264 |
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265 inline QSize drawableSize() const; |
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266 inline QSize offscreenSize() const; |
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267 |
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268 inline GLuint offscreenTexture() const; |
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269 |
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270 QGLContext *context() const; |
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271 |
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272 static bool isSupported(); |
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273 |
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274 inline void initialize(); |
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275 |
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276 inline bool isValid() const; |
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277 |
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278 public Q_SLOTS: |
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279 void cleanupGLContextRefs(const QGLContext *context) { |
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280 if (context == ctx) { |
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281 delete offscreen; |
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282 ctx = 0; |
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283 offscreen = 0; |
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284 mask_dim = 0; |
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285 } |
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286 } |
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287 |
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288 private: |
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289 QGLPaintDevice* device; |
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290 |
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291 QGLFramebufferObject *offscreen; |
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292 QGLContext *ctx; |
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293 |
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294 // dimensions of mask texture (square) |
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295 int mask_dim; |
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296 QSize last_failed_size; |
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297 |
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298 bool drawable_fbo; |
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299 |
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300 bool activated; |
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301 bool initialized; |
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302 |
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303 bool bound; |
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304 }; |
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305 |
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306 inline void QGLOffscreen::setDevice(QPaintDevice *pdev) |
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307 { |
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308 if (pdev->devType() == QInternal::OpenGL) |
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309 device = static_cast<QGLPaintDevice*>(pdev); |
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310 else |
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311 device = QGLPaintDevice::getDevice(pdev); |
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312 |
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313 if (!device) |
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314 return; |
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315 |
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316 drawable_fbo = (pdev->devType() == QInternal::FramebufferObject); |
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317 } |
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318 |
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319 void QGLOffscreen::begin() |
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320 { |
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321 #ifndef QT_OPENGL_ES |
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322 initialized = false; |
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323 |
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324 if (activated) |
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325 initialize(); |
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326 #endif |
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327 } |
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328 |
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329 void QGLOffscreen::initialize() |
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330 { |
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331 #ifndef QT_OPENGL_ES |
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332 if (initialized) |
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333 return; |
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334 |
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335 activated = true; |
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336 initialized = true; |
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337 |
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338 int dim = qMax(2048, static_cast<int>(qt_next_power_of_two(qMax(device->size().width(), device->size().height())))); |
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339 |
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340 bool shared_context = QGLContext::areSharing(device->context(), ctx); |
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341 bool would_fail = last_failed_size.isValid() && |
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342 (device->size().width() >= last_failed_size.width() || |
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343 device->size().height() >= last_failed_size.height()); |
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344 bool needs_refresh = dim > mask_dim || !shared_context; |
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345 |
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346 if (needs_refresh && !would_fail) { |
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347 DEBUG_ONCE qDebug() << "QGLOffscreen::initialize(): creating offscreen of size" << dim; |
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348 delete offscreen; |
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349 offscreen = new QGLFramebufferObject(dim, dim, GLenum(GL_TEXTURE_2D)); |
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350 mask_dim = dim; |
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351 |
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352 if (!offscreen->isValid()) { |
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353 qWarning("QGLOffscreen: Invalid offscreen fbo (size %dx%d)", mask_dim, mask_dim); |
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354 delete offscreen; |
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355 offscreen = 0; |
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356 mask_dim = 0; |
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357 last_failed_size = device->size(); |
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358 } |
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359 } |
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360 |
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361 qt_mask_texture_cache()->setOffscreenSize(offscreenSize()); |
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362 qt_mask_texture_cache()->setDrawableSize(device->size()); |
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363 ctx = device->context(); |
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364 #endif |
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365 } |
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366 |
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367 inline bool QGLOffscreen::isValid() const |
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368 { |
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369 return offscreen; |
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370 } |
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371 |
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372 void QGLOffscreen::end() |
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373 { |
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374 if (bound) |
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375 release(); |
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376 #ifdef DEBUG_DISPLAY_MASK_TEXTURE |
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377 glReadBuffer(GL_BACK); |
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378 glDrawBuffer(GL_BACK); |
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379 glMatrixMode(GL_MODELVIEW); |
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380 glLoadIdentity(); |
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381 glColor4f(1, 1, 1, 1); |
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382 glDisable(GL_DEPTH_TEST); |
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383 glBlendFunc(GL_ONE, GL_ZERO); |
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384 glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE); |
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385 glEnable(GL_TEXTURE_2D); |
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386 glBindTexture(GL_TEXTURE_2D, offscreen->texture()); |
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387 |
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388 glBegin(GL_QUADS); |
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389 glTexCoord2f(0.0, 1.0); glVertex2f(0.0, 0.0); |
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390 glTexCoord2f(1.0, 1.0); glVertex2f(drawable.size().width(), 0.0); |
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391 glTexCoord2f(1.0, 0.0); glVertex2f(drawable.size().width(), drawable.size().height()); |
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392 glTexCoord2f(0.0, 0.0); glVertex2f(0.0, drawable.size().height()); |
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393 glEnd(); |
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394 |
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395 glBindTexture(GL_TEXTURE_2D, 0); |
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396 glDisable(GL_TEXTURE_2D); |
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397 #endif |
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398 } |
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399 |
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400 inline void QGLOffscreen::bind() |
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401 { |
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402 #ifndef QT_OPENGL_ES |
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403 Q_ASSERT(initialized); |
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404 |
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405 if (!offscreen || bound) |
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406 return; |
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407 |
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408 DEBUG_ONCE qDebug() << "QGLOffscreen: binding offscreen"; |
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409 offscreen->bind(); |
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410 |
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411 bound = true; |
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412 |
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413 glViewport(0, 0, offscreenSize().width(), offscreenSize().height()); |
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414 |
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415 glMatrixMode(GL_PROJECTION); |
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416 glLoadIdentity(); |
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417 glOrtho(0, offscreenSize().width(), offscreenSize().height(), 0, -999999, 999999); |
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418 glMatrixMode(GL_MODELVIEW); |
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419 #endif |
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420 } |
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421 |
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422 inline void QGLOffscreen::release() |
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423 { |
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424 #ifndef QT_OPENGL_ES |
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425 if (!offscreen || !bound) |
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426 return; |
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427 |
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428 #ifdef Q_WS_X11 |
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429 // workaround for bug in nvidia driver versions 9x.xx |
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430 if (QGLExtensions::nvidiaFboNeedsFinish) |
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431 glFinish(); |
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432 #endif |
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433 |
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434 DEBUG_ONCE_STR("QGLOffscreen: releasing offscreen"); |
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435 |
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436 if (drawable_fbo) |
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437 device->ensureActiveTarget(); //### |
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438 else |
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439 offscreen->release(); |
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440 |
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441 QSize sz(device->size()); |
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442 glViewport(0, 0, sz.width(), sz.height()); |
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443 |
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444 glMatrixMode(GL_PROJECTION); |
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445 glLoadIdentity(); |
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446 #ifndef QT_OPENGL_ES |
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447 glOrtho(0, sz.width(), sz.height(), 0, -999999, 999999); |
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448 #else |
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449 glOrthof(0, sz.width(), sz.height(), 0, -999999, 999999); |
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450 #endif |
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451 glMatrixMode(GL_MODELVIEW); |
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452 |
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453 bound = false; |
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454 #endif |
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455 } |
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456 |
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457 inline bool QGLOffscreen::isBound() const |
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458 { |
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459 return bound; |
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460 } |
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461 |
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462 inline QSize QGLOffscreen::drawableSize() const |
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463 { |
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464 return device->size(); |
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465 } |
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466 |
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467 inline QSize QGLOffscreen::offscreenSize() const |
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468 { |
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469 return QSize(mask_dim, mask_dim); |
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470 } |
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471 |
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472 inline GLuint QGLOffscreen::offscreenTexture() const |
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473 { |
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474 return offscreen ? offscreen->texture() : 0; |
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475 } |
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476 |
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477 inline QGLContext *QGLOffscreen::context() const |
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478 { |
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479 return ctx; |
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480 } |
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481 |
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482 bool QGLOffscreen::isSupported() |
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483 { |
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484 return (QGLExtensions::glExtensions & QGLExtensions::FramebufferObject); // for fbo |
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485 } |
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486 |
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487 struct QDrawQueueItem |
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488 { |
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489 QDrawQueueItem(qreal _opacity, |
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490 QBrush _brush, |
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491 const QPointF &_brush_origion, |
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492 QPainter::CompositionMode _composition_mode, |
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493 const QTransform &_matrix, |
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494 QGLMaskTextureCache::CacheLocation _location) |
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495 : opacity(_opacity), |
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496 brush(_brush), |
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497 brush_origin(_brush_origion), |
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498 composition_mode(_composition_mode), |
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499 matrix(_matrix), |
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500 location(_location) {} |
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501 qreal opacity; |
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502 QBrush brush; |
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503 QPointF brush_origin; |
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504 QPainter::CompositionMode composition_mode; |
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505 |
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506 QTransform matrix; |
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507 QGLMaskTextureCache::CacheLocation location; |
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508 }; |
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509 |
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510 ////////// GL program cache: start |
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511 |
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512 typedef struct { |
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513 int brush; // brush index or mask index |
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514 int mode; // composition mode index |
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515 bool mask; |
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516 GLuint program; |
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517 } GLProgram; |
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518 |
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519 typedef QMultiHash<const QGLContext *, GLProgram> QGLProgramHash; |
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520 |
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521 class QGLProgramCache : public QObject |
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522 { |
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523 Q_OBJECT |
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524 public: |
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525 QGLProgramCache() { |
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526 // we have to know when a context is deleted so we can free |
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527 // any program handles it holds |
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528 connect(QGLSignalProxy::instance(), SIGNAL(aboutToDestroyContext(const QGLContext *)), |
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529 SLOT(cleanupPrograms(const QGLContext *))); |
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530 |
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531 } |
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532 ~QGLProgramCache() { |
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533 // at this point the cache should contain 0 elements |
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534 // Q_ASSERT(program.size() == 0); |
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535 } |
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536 |
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537 GLuint getProgram(const QGLContext *ctx, int brush, int mode, bool mask_mode) |
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538 { |
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539 // 1. see if we have an entry for the ctx context |
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540 QList<GLProgram> progs = programs.values(ctx); |
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541 for (int i=0; i<progs.size(); ++i) { |
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542 const GLProgram &prg = progs.at(i); |
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543 if (mask_mode) { |
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544 if (prg.mask && prg.brush == brush) |
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545 return prg.program; |
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546 } else { |
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547 if (!prg.mask && prg.brush == brush && prg.mode == mode) |
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548 return prg.program; |
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549 } |
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550 } |
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551 |
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552 // 2. try to find a match in a shared context, and update the |
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553 // hash with the entry found |
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554 QList<const QGLContext *> contexts = programs.uniqueKeys(); |
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555 for (int i=0; i<contexts.size(); ++i) { |
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556 const QGLContext *cx = contexts.at(i); |
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557 if (cx != ctx && QGLContext::areSharing(cx, ctx)) { |
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558 QList<GLProgram> progs = programs.values(cx); |
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559 for (int k=0; k<progs.size(); ++k) { |
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560 const GLProgram &prg = progs.at(k); |
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561 if (mask_mode) { |
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562 if (prg.mask && prg.brush == brush) { |
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563 programs.insert(ctx, prg); |
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564 return prg.program; |
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565 } |
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566 } else { |
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567 if (!prg.mask && prg.brush == brush && prg.mode == mode) { |
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568 programs.insert(ctx, prg); |
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569 return prg.program; |
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570 } |
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571 } |
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572 } |
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573 } |
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574 } |
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575 |
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576 // 3. compile a new program and place it into the cache |
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577 // NB! assumes ctx is the current GL context |
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578 GLProgram prg; |
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579 prg.brush = brush; |
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580 prg.mode = mode; |
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581 prg.mask = mask_mode; |
|
582 glGenProgramsARB(1, &prg.program); |
|
583 glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, prg.program); |
|
584 const char *src = mask_mode |
|
585 ? mask_fragment_program_sources[brush] |
|
586 : painter_fragment_program_sources[brush][mode]; |
|
587 // necessary for .NET 2002, apparently |
|
588 const GLbyte *gl_src = reinterpret_cast<const GLbyte *>(src); |
|
589 |
|
590 while (glGetError() != GL_NO_ERROR) {} // reset error state |
|
591 glProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB, |
|
592 int(strlen(src)), gl_src); |
|
593 if (glGetError() != GL_NO_ERROR) { |
|
594 // qDebug() << "QGLProgramCache: Unable to compile fragment program."; |
|
595 glDeleteProgramsARB(1, &prg.program); |
|
596 return 0; |
|
597 } |
|
598 |
|
599 // qDebug() << "QGLProgramCache: Creating GL program:" << prg.program << hex << ctx; |
|
600 programs.insert(ctx, prg); |
|
601 return prg.program; |
|
602 } |
|
603 |
|
604 public Q_SLOTS: |
|
605 void cleanupPrograms(const QGLContext *context) |
|
606 { |
|
607 QGLProgramHash::iterator it = programs.begin(); |
|
608 while (it != programs.end()) { |
|
609 if (it.key() == context) { |
|
610 if (!context->isSharing()) { |
|
611 // the ctx variable below is needed for the glDeleteProgramARB call |
|
612 // since it is resolved from our extension system |
|
613 // NB! assumes context is the current GL context |
|
614 const QGLContext *ctx = context; |
|
615 // qDebug() << "QGLProgramHash: Deleting GL program:" << it.value().program << hex << it.key(); |
|
616 glDeleteProgramsARB(1, &it.value().program); |
|
617 } |
|
618 it = programs.erase(it); |
|
619 } else { |
|
620 ++it; |
|
621 } |
|
622 } |
|
623 } |
|
624 |
|
625 private: |
|
626 QGLProgramHash programs; |
|
627 }; |
|
628 |
|
629 Q_GLOBAL_STATIC(QGLProgramCache, qt_gl_program_cache) |
|
630 |
|
631 ////////// GL program cache: end |
|
632 |
|
633 class QOpenGLPaintEnginePrivate; |
|
634 class QGLPrivateCleanup : public QObject |
|
635 { |
|
636 Q_OBJECT |
|
637 public: |
|
638 QGLPrivateCleanup(QOpenGLPaintEnginePrivate *priv) |
|
639 : p(priv) |
|
640 { |
|
641 connect(QGLSignalProxy::instance(), |
|
642 SIGNAL(aboutToDestroyContext(const QGLContext *)), |
|
643 SLOT(cleanupGLContextRefs(const QGLContext *))); |
|
644 } |
|
645 |
|
646 public Q_SLOTS: |
|
647 void cleanupGLContextRefs(const QGLContext *context); |
|
648 |
|
649 private: |
|
650 QOpenGLPaintEnginePrivate *p; |
|
651 }; |
|
652 |
|
653 class QOpenGLPaintEnginePrivate : public QPaintEngineExPrivate |
|
654 { |
|
655 Q_DECLARE_PUBLIC(QOpenGLPaintEngine) |
|
656 public: |
|
657 QOpenGLPaintEnginePrivate() |
|
658 : opacity(1) |
|
659 , composition_mode(QPainter::CompositionMode_SourceOver) |
|
660 , has_fast_pen(false) |
|
661 , use_stencil_method(false) |
|
662 , dirty_drawable_texture(false) |
|
663 , has_stencil_face_ext(false) |
|
664 , use_fragment_programs(false) |
|
665 , high_quality_antialiasing(false) |
|
666 , use_smooth_pixmap_transform(false) |
|
667 , use_emulation(false) |
|
668 , txop(QTransform::TxNone) |
|
669 , inverseScale(1) |
|
670 , moveToCount(0) |
|
671 , last_created_state(0) |
|
672 , shader_ctx(0) |
|
673 , grad_palette(0) |
|
674 , drawable_texture(0) |
|
675 , ref_cleaner(this) |
|
676 {} |
|
677 |
|
678 inline void setGLPen(const QColor &c) { |
|
679 uint alpha = qRound(c.alpha() * opacity); |
|
680 pen_color[0] = qt_div_255(c.red() * alpha); |
|
681 pen_color[1] = qt_div_255(c.green() * alpha); |
|
682 pen_color[2] = qt_div_255(c.blue() * alpha); |
|
683 pen_color[3] = alpha; |
|
684 } |
|
685 |
|
686 inline void setGLBrush(const QColor &c) { |
|
687 uint alpha = qRound(c.alpha() * opacity); |
|
688 brush_color[0] = qt_div_255(c.red() * alpha); |
|
689 brush_color[1] = qt_div_255(c.green() * alpha); |
|
690 brush_color[2] = qt_div_255(c.blue() * alpha); |
|
691 brush_color[3] = alpha; |
|
692 } |
|
693 |
|
694 inline void setGradientOps(const QBrush &brush, const QRectF &bounds); |
|
695 void createGradientPaletteTexture(const QGradient& g); |
|
696 |
|
697 void updateGradient(const QBrush &brush, const QRectF &bounds); |
|
698 |
|
699 inline void lineToStencil(qreal x, qreal y); |
|
700 inline void curveToStencil(const QPointF &cp1, const QPointF &cp2, const QPointF &ep); |
|
701 void pathToVertexArrays(const QPainterPath &path); |
|
702 void fillVertexArray(Qt::FillRule fillRule); |
|
703 void drawVertexArrays(); |
|
704 void fillPath(const QPainterPath &path); |
|
705 void fillPolygon_dev(const QPointF *polygonPoints, int pointCount, |
|
706 Qt::FillRule fill); |
|
707 |
|
708 void drawFastRect(const QRectF &rect); |
|
709 void strokePath(const QPainterPath &path, bool use_cache); |
|
710 void strokePathFastPen(const QPainterPath &path, bool needsResolving); |
|
711 void strokeLines(const QPainterPath &path); |
|
712 |
|
713 void updateDepthClip(); |
|
714 void systemStateChanged(); |
|
715 |
|
716 void cleanupGLContextRefs(const QGLContext *context) { |
|
717 if (context == shader_ctx) |
|
718 shader_ctx = 0; |
|
719 } |
|
720 |
|
721 inline void updateFastPen() { |
|
722 qreal pen_width = cpen.widthF(); |
|
723 has_fast_pen = |
|
724 ((pen_width == 0 || (pen_width <= 1 && matrix.type() <= QTransform::TxTranslate)) |
|
725 || cpen.isCosmetic()) |
|
726 && cpen.style() == Qt::SolidLine |
|
727 && cpen.isSolid(); |
|
728 |
|
729 } |
|
730 |
|
731 void disableClipping(); |
|
732 void enableClipping(); |
|
733 void ensureDrawableTexture(); |
|
734 |
|
735 QPen cpen; |
|
736 QBrush cbrush; |
|
737 Qt::BrushStyle brush_style; |
|
738 QPointF brush_origin; |
|
739 Qt::BrushStyle pen_brush_style; |
|
740 qreal opacity; |
|
741 QPainter::CompositionMode composition_mode; |
|
742 |
|
743 Qt::BrushStyle current_style; |
|
744 |
|
745 uint has_pen : 1; |
|
746 uint has_brush : 1; |
|
747 uint has_fast_pen : 1; |
|
748 uint use_stencil_method : 1; |
|
749 uint dirty_drawable_texture : 1; |
|
750 uint has_stencil_face_ext : 1; |
|
751 uint use_fragment_programs : 1; |
|
752 uint high_quality_antialiasing : 1; |
|
753 uint has_antialiasing : 1; |
|
754 uint has_fast_composition_mode : 1; |
|
755 uint use_smooth_pixmap_transform : 1; |
|
756 uint use_system_clip : 1; |
|
757 uint use_emulation : 1; |
|
758 |
|
759 QRegion dirty_stencil; |
|
760 |
|
761 void updateUseEmulation(); |
|
762 |
|
763 QTransform matrix; |
|
764 GLubyte pen_color[4]; |
|
765 GLubyte brush_color[4]; |
|
766 QTransform::TransformationType txop; |
|
767 QGLPaintDevice* device; |
|
768 QGLOffscreen offscreen; |
|
769 |
|
770 qreal inverseScale; |
|
771 |
|
772 int moveToCount; |
|
773 QPointF path_start; |
|
774 |
|
775 bool isFastRect(const QRectF &r); |
|
776 |
|
777 void drawImageAsPath(const QRectF &r, const QImage &img, const QRectF &sr); |
|
778 void drawTiledImageAsPath(const QRectF &r, const QImage &img, qreal sx, qreal sy, const QPointF &offset); |
|
779 |
|
780 void drawOffscreenPath(const QPainterPath &path); |
|
781 |
|
782 void composite(const QRectF &rect, const QPoint &maskOffset = QPoint()); |
|
783 void composite(GLuint primitive, const q_vertexType *vertexArray, int vertexCount, const QPoint &maskOffset = QPoint()); |
|
784 |
|
785 bool createFragmentPrograms(); |
|
786 void deleteFragmentPrograms(); |
|
787 void updateFragmentProgramData(int locations[]); |
|
788 |
|
789 void cacheItemErased(int channel, const QRect &rect); |
|
790 |
|
791 void addItem(const QGLMaskTextureCache::CacheLocation &location); |
|
792 void drawItem(const QDrawQueueItem &item); |
|
793 void flushDrawQueue(); |
|
794 |
|
795 void copyDrawable(const QRectF &rect); |
|
796 |
|
797 void updateGLMatrix() const; |
|
798 |
|
799 mutable QPainterState *last_created_state; |
|
800 |
|
801 QGLContext *shader_ctx; |
|
802 GLuint grad_palette; |
|
803 |
|
804 GLuint painter_fragment_programs[num_fragment_brushes][num_fragment_composition_modes]; |
|
805 GLuint mask_fragment_programs[num_fragment_masks]; |
|
806 |
|
807 float inv_matrix_data[3][4]; |
|
808 float fmp_data[4]; |
|
809 float fmp2_m_radius2_data[4]; |
|
810 float angle_data[4]; |
|
811 float linear_data[4]; |
|
812 |
|
813 float porterduff_ab_data[4]; |
|
814 float porterduff_xyz_data[4]; |
|
815 |
|
816 float mask_offset_data[4]; |
|
817 float mask_channel_data[4]; |
|
818 |
|
819 FragmentBrushType fragment_brush; |
|
820 FragmentCompositionModeType fragment_composition_mode; |
|
821 |
|
822 void setPorterDuffData(float a, float b, float x, float y, float z); |
|
823 void setInvMatrixData(const QTransform &inv_matrix); |
|
824 |
|
825 qreal max_x; |
|
826 qreal max_y; |
|
827 qreal min_x; |
|
828 qreal min_y; |
|
829 |
|
830 QDataBuffer<QPointF> tess_points; |
|
831 QVector<int> tess_points_stops; |
|
832 |
|
833 GLdouble projection_matrix[4][4]; |
|
834 |
|
835 #if defined(QT_OPENGL_ES_1) || defined(QT_OPENGL_ES_2) |
|
836 GLfloat mv_matrix[4][4]; |
|
837 #else |
|
838 GLdouble mv_matrix[4][4]; |
|
839 #endif |
|
840 |
|
841 QList<QDrawQueueItem> drawQueue; |
|
842 |
|
843 GLuint drawable_texture; |
|
844 QSize drawable_texture_size; |
|
845 |
|
846 int max_texture_size; |
|
847 |
|
848 QGLPrivateCleanup ref_cleaner; |
|
849 friend class QGLMaskTextureCache; |
|
850 }; |
|
851 |
|
852 class QOpenGLCoordinateOffset |
|
853 { |
|
854 public: |
|
855 QOpenGLCoordinateOffset(QOpenGLPaintEnginePrivate *d); |
|
856 ~QOpenGLCoordinateOffset(); |
|
857 |
|
858 static void enableOffset(QOpenGLPaintEnginePrivate *d); |
|
859 static void disableOffset(QOpenGLPaintEnginePrivate *d); |
|
860 |
|
861 private: |
|
862 QOpenGLPaintEnginePrivate *d; |
|
863 }; |
|
864 |
|
865 QOpenGLCoordinateOffset::QOpenGLCoordinateOffset(QOpenGLPaintEnginePrivate *d_) |
|
866 : d(d_) |
|
867 { |
|
868 enableOffset(d); |
|
869 } |
|
870 |
|
871 void QOpenGLCoordinateOffset::enableOffset(QOpenGLPaintEnginePrivate *d) |
|
872 { |
|
873 if (!d->has_antialiasing) { |
|
874 glMatrixMode(GL_MODELVIEW); |
|
875 glPushMatrix(); |
|
876 d->mv_matrix[3][0] += 0.5; |
|
877 d->mv_matrix[3][1] += 0.5; |
|
878 d->updateGLMatrix(); |
|
879 } |
|
880 } |
|
881 |
|
882 QOpenGLCoordinateOffset::~QOpenGLCoordinateOffset() |
|
883 { |
|
884 disableOffset(d); |
|
885 } |
|
886 |
|
887 void QOpenGLCoordinateOffset::disableOffset(QOpenGLPaintEnginePrivate *d) |
|
888 { |
|
889 if (!d->has_antialiasing) { |
|
890 glMatrixMode(GL_MODELVIEW); |
|
891 glPopMatrix(); |
|
892 d->mv_matrix[3][0] -= 0.5; |
|
893 d->mv_matrix[3][1] -= 0.5; |
|
894 } |
|
895 } |
|
896 |
|
897 void QGLPrivateCleanup::cleanupGLContextRefs(const QGLContext *context) |
|
898 { |
|
899 p->cleanupGLContextRefs(context); |
|
900 } |
|
901 |
|
902 |
|
903 static inline void updateTextureFilter(GLenum target, GLenum wrapMode, bool smoothPixmapTransform) |
|
904 { |
|
905 if (smoothPixmapTransform) { |
|
906 glTexParameterf(target, GL_TEXTURE_MAG_FILTER, GL_LINEAR); |
|
907 glTexParameterf(target, GL_TEXTURE_MIN_FILTER, GL_LINEAR); |
|
908 } else { |
|
909 glTexParameterf(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
|
910 glTexParameterf(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
|
911 } |
|
912 glTexParameterf(target, GL_TEXTURE_WRAP_S, wrapMode); |
|
913 glTexParameterf(target, GL_TEXTURE_WRAP_T, wrapMode); |
|
914 } |
|
915 |
|
916 static inline QPainterPath strokeForPath(const QPainterPath &path, const QPen &cpen) { |
|
917 QPainterPathStroker stroker; |
|
918 if (cpen.style() == Qt::CustomDashLine) |
|
919 stroker.setDashPattern(cpen.dashPattern()); |
|
920 else |
|
921 stroker.setDashPattern(cpen.style()); |
|
922 |
|
923 stroker.setCapStyle(cpen.capStyle()); |
|
924 stroker.setJoinStyle(cpen.joinStyle()); |
|
925 stroker.setMiterLimit(cpen.miterLimit()); |
|
926 |
|
927 qreal width = cpen.widthF(); |
|
928 if (width == 0) |
|
929 stroker.setWidth(1); |
|
930 else |
|
931 stroker.setWidth(width); |
|
932 |
|
933 QPainterPath stroke = stroker.createStroke(path); |
|
934 stroke.setFillRule(Qt::WindingFill); |
|
935 return stroke; |
|
936 } |
|
937 |
|
938 class QGLStrokeCache |
|
939 { |
|
940 struct CacheInfo |
|
941 { |
|
942 inline CacheInfo(QPainterPath p, QPainterPath sp, QPen stroke_pen) : |
|
943 path(p), stroked_path(sp), pen(stroke_pen) {} |
|
944 QPainterPath path; |
|
945 QPainterPath stroked_path; |
|
946 QPen pen; |
|
947 }; |
|
948 |
|
949 typedef QMultiHash<quint64, CacheInfo> QGLStrokeTableHash; |
|
950 |
|
951 public: |
|
952 inline QPainterPath getStrokedPath(const QPainterPath &path, const QPen &pen) { |
|
953 quint64 hash_val = 0; |
|
954 |
|
955 for (int i = 0; i < path.elementCount() && i <= 2; i++) { |
|
956 hash_val += quint64(path.elementAt(i).x); |
|
957 hash_val += quint64(path.elementAt(i).y); |
|
958 } |
|
959 |
|
960 QGLStrokeTableHash::const_iterator it = cache.constFind(hash_val); |
|
961 |
|
962 if (it == cache.constEnd()) |
|
963 return addCacheElement(hash_val, path, pen); |
|
964 else { |
|
965 do { |
|
966 const CacheInfo &cache_info = it.value(); |
|
967 if (cache_info.path == path && cache_info.pen == pen) |
|
968 return cache_info.stroked_path; |
|
969 ++it; |
|
970 } while (it != cache.constEnd() && it.key() == hash_val); |
|
971 // an exact match for this path was not found, create new cache element |
|
972 return addCacheElement(hash_val, path, pen); |
|
973 } |
|
974 } |
|
975 |
|
976 protected: |
|
977 inline int maxCacheSize() const { return 500; } |
|
978 QPainterPath addCacheElement(quint64 hash_val, QPainterPath path, const QPen &pen) { |
|
979 if (cache.size() == maxCacheSize()) { |
|
980 int elem_to_remove = qrand() % maxCacheSize(); |
|
981 cache.remove(cache.keys()[elem_to_remove]); // may remove more than 1, but OK |
|
982 } |
|
983 QPainterPath stroke = strokeForPath(path, pen); |
|
984 CacheInfo cache_entry(path, stroke, pen); |
|
985 return cache.insert(hash_val, cache_entry).value().stroked_path; |
|
986 } |
|
987 |
|
988 QGLStrokeTableHash cache; |
|
989 }; |
|
990 |
|
991 Q_GLOBAL_STATIC(QGLStrokeCache, qt_opengl_stroke_cache) |
|
992 |
|
993 class QGLGradientCache : public QObject |
|
994 { |
|
995 Q_OBJECT |
|
996 struct CacheInfo |
|
997 { |
|
998 inline CacheInfo(QGradientStops s, qreal op, QGradient::InterpolationMode mode) : |
|
999 stops(s), opacity(op), interpolationMode(mode) {} |
|
1000 |
|
1001 GLuint texId; |
|
1002 QGradientStops stops; |
|
1003 qreal opacity; |
|
1004 QGradient::InterpolationMode interpolationMode; |
|
1005 }; |
|
1006 |
|
1007 typedef QMultiHash<quint64, CacheInfo> QGLGradientColorTableHash; |
|
1008 |
|
1009 public: |
|
1010 QGLGradientCache() : QObject(), buffer_ctx(0) |
|
1011 { |
|
1012 connect(QGLSignalProxy::instance(), |
|
1013 SIGNAL(aboutToDestroyContext(const QGLContext *)), |
|
1014 SLOT(cleanupGLContextRefs(const QGLContext *))); |
|
1015 } |
|
1016 |
|
1017 inline GLuint getBuffer(const QGradient &gradient, qreal opacity, QGLContext *ctx) { |
|
1018 if (buffer_ctx && !QGLContext::areSharing(buffer_ctx, ctx)) |
|
1019 cleanCache(); |
|
1020 |
|
1021 buffer_ctx = ctx; |
|
1022 |
|
1023 quint64 hash_val = 0; |
|
1024 |
|
1025 QGradientStops stops = gradient.stops(); |
|
1026 for (int i = 0; i < stops.size() && i <= 2; i++) |
|
1027 hash_val += stops[i].second.rgba(); |
|
1028 |
|
1029 QGLGradientColorTableHash::const_iterator it = cache.constFind(hash_val); |
|
1030 |
|
1031 if (it == cache.constEnd()) |
|
1032 return addCacheElement(hash_val, gradient, opacity); |
|
1033 else { |
|
1034 do { |
|
1035 const CacheInfo &cache_info = it.value(); |
|
1036 if (cache_info.stops == stops && cache_info.opacity == opacity && cache_info.interpolationMode == gradient.interpolationMode()) { |
|
1037 return cache_info.texId; |
|
1038 } |
|
1039 ++it; |
|
1040 } while (it != cache.constEnd() && it.key() == hash_val); |
|
1041 // an exact match for these stops and opacity was not found, create new cache |
|
1042 return addCacheElement(hash_val, gradient, opacity); |
|
1043 } |
|
1044 } |
|
1045 |
|
1046 inline int paletteSize() const { return 1024; } |
|
1047 |
|
1048 protected: |
|
1049 inline int maxCacheSize() const { return 60; } |
|
1050 inline void generateGradientColorTable(const QGradient& g, |
|
1051 uint *colorTable, |
|
1052 int size, qreal opacity) const; |
|
1053 GLuint addCacheElement(quint64 hash_val, const QGradient &gradient, qreal opacity) { |
|
1054 if (cache.size() == maxCacheSize()) { |
|
1055 int elem_to_remove = qrand() % maxCacheSize(); |
|
1056 quint64 key = cache.keys()[elem_to_remove]; |
|
1057 |
|
1058 // need to call glDeleteTextures on each removed cache entry: |
|
1059 QGLGradientColorTableHash::const_iterator it = cache.constFind(key); |
|
1060 do { |
|
1061 glDeleteTextures(1, &it.value().texId); |
|
1062 } while (++it != cache.constEnd() && it.key() == key); |
|
1063 cache.remove(key); // may remove more than 1, but OK |
|
1064 } |
|
1065 CacheInfo cache_entry(gradient.stops(), opacity, gradient.interpolationMode()); |
|
1066 uint buffer[1024]; |
|
1067 generateGradientColorTable(gradient, buffer, paletteSize(), opacity); |
|
1068 glGenTextures(1, &cache_entry.texId); |
|
1069 #ifndef QT_OPENGL_ES |
|
1070 glBindTexture(GL_TEXTURE_1D, cache_entry.texId); |
|
1071 glTexImage1D(GL_TEXTURE_1D, 0, GL_RGBA, paletteSize(), |
|
1072 0, GL_BGRA, GL_UNSIGNED_BYTE, buffer); |
|
1073 #else |
|
1074 // create 2D one-line texture instead. This requires an impl of manual GL_TEXGEN for all primitives |
|
1075 #endif |
|
1076 return cache.insert(hash_val, cache_entry).value().texId; |
|
1077 } |
|
1078 |
|
1079 void cleanCache() { |
|
1080 QGLShareContextScope scope(buffer_ctx); |
|
1081 QGLGradientColorTableHash::const_iterator it = cache.constBegin(); |
|
1082 for (; it != cache.constEnd(); ++it) { |
|
1083 const CacheInfo &cache_info = it.value(); |
|
1084 glDeleteTextures(1, &cache_info.texId); |
|
1085 } |
|
1086 cache.clear(); |
|
1087 } |
|
1088 |
|
1089 QGLGradientColorTableHash cache; |
|
1090 |
|
1091 QGLContext *buffer_ctx; |
|
1092 |
|
1093 public Q_SLOTS: |
|
1094 void cleanupGLContextRefs(const QGLContext *context) { |
|
1095 if (context == buffer_ctx) { |
|
1096 cleanCache(); |
|
1097 buffer_ctx = 0; |
|
1098 } |
|
1099 } |
|
1100 }; |
|
1101 |
|
1102 static inline uint endianColor(uint c) |
|
1103 { |
|
1104 #if Q_BYTE_ORDER == Q_LITTLE_ENDIAN |
|
1105 return c; |
|
1106 #else |
|
1107 return ( (c << 24) & 0xff000000) |
|
1108 | ((c >> 24) & 0x000000ff) |
|
1109 | ((c << 8) & 0x00ff0000) |
|
1110 | ((c >> 8) & 0x0000ff00); |
|
1111 #endif // Q_BYTE_ORDER |
|
1112 } |
|
1113 |
|
1114 void QGLGradientCache::generateGradientColorTable(const QGradient& gradient, uint *colorTable, int size, qreal opacity) const |
|
1115 { |
|
1116 int pos = 0; |
|
1117 QGradientStops s = gradient.stops(); |
|
1118 QVector<uint> colors(s.size()); |
|
1119 |
|
1120 for (int i = 0; i < s.size(); ++i) |
|
1121 colors[i] = s[i].second.rgba(); |
|
1122 |
|
1123 bool colorInterpolation = (gradient.interpolationMode() == QGradient::ColorInterpolation); |
|
1124 |
|
1125 uint alpha = qRound(opacity * 256); |
|
1126 uint current_color = ARGB_COMBINE_ALPHA(colors[0], alpha); |
|
1127 qreal incr = 1.0 / qreal(size); |
|
1128 qreal fpos = 1.5 * incr; |
|
1129 colorTable[pos++] = endianColor(PREMUL(current_color)); |
|
1130 |
|
1131 while (fpos <= s.first().first) { |
|
1132 colorTable[pos] = colorTable[pos - 1]; |
|
1133 pos++; |
|
1134 fpos += incr; |
|
1135 } |
|
1136 |
|
1137 if (colorInterpolation) |
|
1138 current_color = PREMUL(current_color); |
|
1139 |
|
1140 for (int i = 0; i < s.size() - 1; ++i) { |
|
1141 qreal delta = 1/(s[i+1].first - s[i].first); |
|
1142 uint next_color = ARGB_COMBINE_ALPHA(colors[i+1], alpha); |
|
1143 if (colorInterpolation) |
|
1144 next_color = PREMUL(next_color); |
|
1145 |
|
1146 while (fpos < s[i+1].first && pos < size) { |
|
1147 int dist = int(256 * ((fpos - s[i].first) * delta)); |
|
1148 int idist = 256 - dist; |
|
1149 if (colorInterpolation) |
|
1150 colorTable[pos] = endianColor(INTERPOLATE_PIXEL_256(current_color, idist, next_color, dist)); |
|
1151 else |
|
1152 colorTable[pos] = endianColor(PREMUL(INTERPOLATE_PIXEL_256(current_color, idist, next_color, dist))); |
|
1153 ++pos; |
|
1154 fpos += incr; |
|
1155 } |
|
1156 current_color = next_color; |
|
1157 } |
|
1158 |
|
1159 Q_ASSERT(s.size() > 0); |
|
1160 |
|
1161 uint last_color = endianColor(PREMUL(ARGB_COMBINE_ALPHA(colors[s.size() - 1], alpha))); |
|
1162 for (;pos < size; ++pos) |
|
1163 colorTable[pos] = last_color; |
|
1164 |
|
1165 // Make sure the last color stop is represented at the end of the table |
|
1166 colorTable[size-1] = last_color; |
|
1167 } |
|
1168 |
|
1169 #ifndef Q_WS_QWS |
|
1170 Q_GLOBAL_STATIC(QGLGradientCache, qt_opengl_gradient_cache) |
|
1171 #endif |
|
1172 |
|
1173 void QOpenGLPaintEnginePrivate::createGradientPaletteTexture(const QGradient& g) |
|
1174 { |
|
1175 #ifdef QT_OPENGL_ES //### |
|
1176 Q_UNUSED(g); |
|
1177 #else |
|
1178 GLuint texId = qt_opengl_gradient_cache()->getBuffer(g, opacity, device->context()); |
|
1179 glBindTexture(GL_TEXTURE_1D, texId); |
|
1180 grad_palette = texId; |
|
1181 if (g.spread() == QGradient::RepeatSpread || g.type() == QGradient::ConicalGradient) |
|
1182 glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, GL_REPEAT); |
|
1183 else if (g.spread() == QGradient::ReflectSpread) |
|
1184 glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, GL_MIRRORED_REPEAT_IBM); |
|
1185 else |
|
1186 glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); |
|
1187 |
|
1188 glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); |
|
1189 glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); |
|
1190 |
|
1191 #endif |
|
1192 } |
|
1193 |
|
1194 |
|
1195 inline void QOpenGLPaintEnginePrivate::setGradientOps(const QBrush &brush, const QRectF &bounds) |
|
1196 { |
|
1197 current_style = brush.style(); |
|
1198 |
|
1199 if (current_style < Qt::LinearGradientPattern || current_style > Qt::ConicalGradientPattern) { |
|
1200 setGLBrush(brush.color()); |
|
1201 qt_glColor4ubv(brush_color); |
|
1202 } |
|
1203 |
|
1204 updateGradient(brush, bounds); |
|
1205 |
|
1206 #ifndef QT_OPENGL_ES //### GLES does not have GL_TEXTURE_GEN_ so we are falling back for gradients |
|
1207 glDisable(GL_TEXTURE_GEN_S); |
|
1208 glDisable(GL_TEXTURE_1D); |
|
1209 |
|
1210 if (current_style == Qt::LinearGradientPattern) { |
|
1211 if (high_quality_antialiasing || !has_fast_composition_mode) { |
|
1212 fragment_brush = FRAGMENT_PROGRAM_BRUSH_LINEAR; |
|
1213 } else { |
|
1214 glEnable(GL_TEXTURE_GEN_S); |
|
1215 glEnable(GL_TEXTURE_1D); |
|
1216 } |
|
1217 } else { |
|
1218 if (use_fragment_programs) { |
|
1219 if (current_style == Qt::RadialGradientPattern) |
|
1220 fragment_brush = FRAGMENT_PROGRAM_BRUSH_RADIAL; |
|
1221 else if (current_style == Qt::ConicalGradientPattern) |
|
1222 fragment_brush = FRAGMENT_PROGRAM_BRUSH_CONICAL; |
|
1223 else if (current_style == Qt::SolidPattern) |
|
1224 fragment_brush = FRAGMENT_PROGRAM_BRUSH_SOLID; |
|
1225 else if (current_style == Qt::TexturePattern && !brush.texture().isQBitmap()) |
|
1226 fragment_brush = FRAGMENT_PROGRAM_BRUSH_TEXTURE; |
|
1227 else |
|
1228 fragment_brush = FRAGMENT_PROGRAM_BRUSH_PATTERN; |
|
1229 } |
|
1230 } |
|
1231 #endif |
|
1232 } |
|
1233 |
|
1234 QOpenGLPaintEngine::QOpenGLPaintEngine() |
|
1235 : QPaintEngineEx(*(new QOpenGLPaintEnginePrivate)) |
|
1236 { |
|
1237 } |
|
1238 |
|
1239 QOpenGLPaintEngine::~QOpenGLPaintEngine() |
|
1240 { |
|
1241 } |
|
1242 |
|
1243 bool QOpenGLPaintEngine::begin(QPaintDevice *pdev) |
|
1244 { |
|
1245 Q_D(QOpenGLPaintEngine); |
|
1246 |
|
1247 if (pdev->devType() == QInternal::OpenGL) |
|
1248 d->device = static_cast<QGLPaintDevice*>(pdev); |
|
1249 else |
|
1250 d->device = QGLPaintDevice::getDevice(pdev); |
|
1251 |
|
1252 if (!d->device) |
|
1253 return false; |
|
1254 |
|
1255 d->offscreen.setDevice(pdev); |
|
1256 d->has_fast_pen = false; |
|
1257 d->inverseScale = 1; |
|
1258 d->opacity = 1; |
|
1259 d->device->beginPaint(); |
|
1260 d->matrix = QTransform(); |
|
1261 d->has_antialiasing = false; |
|
1262 d->high_quality_antialiasing = false; |
|
1263 |
|
1264 QSize sz(d->device->size()); |
|
1265 d->dirty_stencil = QRect(0, 0, sz.width(), sz.height()); |
|
1266 |
|
1267 d->use_emulation = false; |
|
1268 |
|
1269 for (int i = 0; i < 4; ++i) |
|
1270 for (int j = 0; j < 4; ++j) |
|
1271 d->mv_matrix[i][j] = (i == j ? qreal(1) : qreal(0)); |
|
1272 |
|
1273 bool has_frag_program = (QGLExtensions::glExtensions & QGLExtensions::FragmentProgram) |
|
1274 && (pdev->devType() != QInternal::Pixmap); |
|
1275 |
|
1276 QGLContext *ctx = const_cast<QGLContext *>(d->device->context()); |
|
1277 if (!ctx) { |
|
1278 qWarning() << "QOpenGLPaintEngine: paint device doesn't have a valid GL context."; |
|
1279 return false; |
|
1280 } |
|
1281 |
|
1282 if (has_frag_program) |
|
1283 has_frag_program = qt_resolve_frag_program_extensions(ctx) && qt_resolve_version_1_3_functions(ctx); |
|
1284 |
|
1285 d->use_stencil_method = d->device->format().stencil() |
|
1286 && (QGLExtensions::glExtensions & QGLExtensions::StencilWrap); |
|
1287 if (d->device->format().directRendering() |
|
1288 && (d->use_stencil_method && QGLExtensions::glExtensions & QGLExtensions::StencilTwoSide)) |
|
1289 d->has_stencil_face_ext = qt_resolve_stencil_face_extension(ctx); |
|
1290 |
|
1291 #ifndef QT_OPENGL_ES |
|
1292 if (!ctx->d_ptr->internal_context) { |
|
1293 glGetDoublev(GL_PROJECTION_MATRIX, &d->projection_matrix[0][0]); |
|
1294 glPushClientAttrib(GL_CLIENT_ALL_ATTRIB_BITS); |
|
1295 glPushAttrib(GL_ALL_ATTRIB_BITS); |
|
1296 |
|
1297 glDisableClientState(GL_EDGE_FLAG_ARRAY); |
|
1298 glDisableClientState(GL_INDEX_ARRAY); |
|
1299 glPolygonMode(GL_FRONT_AND_BACK, GL_FILL); |
|
1300 glDisable(GL_TEXTURE_1D); |
|
1301 glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); |
|
1302 glPixelTransferi(GL_MAP_COLOR, false); |
|
1303 glPixelTransferi(GL_MAP_STENCIL, false); |
|
1304 glDisable(GL_TEXTURE_GEN_S); |
|
1305 |
|
1306 glPixelStorei(GL_PACK_SWAP_BYTES, false); |
|
1307 glPixelStorei(GL_PACK_LSB_FIRST, false); |
|
1308 glPixelStorei(GL_PACK_ROW_LENGTH, 0); |
|
1309 glPixelStorei(GL_PACK_SKIP_ROWS, 0); |
|
1310 glPixelStorei(GL_PACK_SKIP_PIXELS, 0); |
|
1311 glPixelStorei(GL_PACK_ALIGNMENT, 4); |
|
1312 |
|
1313 glPixelStorei(GL_UNPACK_SWAP_BYTES, false); |
|
1314 glPixelStorei(GL_UNPACK_LSB_FIRST, false); |
|
1315 glPixelStorei(GL_UNPACK_ROW_LENGTH, 0); |
|
1316 glPixelStorei(GL_UNPACK_SKIP_ROWS, 0); |
|
1317 glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0); |
|
1318 glPixelStorei(GL_UNPACK_ALIGNMENT, 4); |
|
1319 |
|
1320 if (QGLFormat::openGLVersionFlags() & QGLFormat::OpenGL_Version_1_2) { |
|
1321 glPixelStorei(GL_PACK_IMAGE_HEIGHT, 0); |
|
1322 glPixelStorei(GL_PACK_SKIP_IMAGES, 0); |
|
1323 glPixelStorei(GL_UNPACK_IMAGE_HEIGHT, 0); |
|
1324 glPixelStorei(GL_UNPACK_SKIP_IMAGES, 0); |
|
1325 } |
|
1326 } |
|
1327 #endif |
|
1328 |
|
1329 if (!ctx->d_ptr->internal_context) { |
|
1330 glMatrixMode(GL_MODELVIEW); |
|
1331 glPushMatrix(); |
|
1332 glMatrixMode(GL_TEXTURE); |
|
1333 glPushMatrix(); |
|
1334 glLoadIdentity(); |
|
1335 glDisableClientState(GL_COLOR_ARRAY); |
|
1336 glDisableClientState(GL_NORMAL_ARRAY); |
|
1337 glDisableClientState(GL_TEXTURE_COORD_ARRAY); |
|
1338 glDisableClientState(GL_VERTEX_ARRAY); |
|
1339 |
|
1340 if (QGLExtensions::glExtensions & QGLExtensions::SampleBuffers) |
|
1341 glDisable(GL_MULTISAMPLE); |
|
1342 glDisable(GL_TEXTURE_2D); |
|
1343 if (QGLExtensions::glExtensions & QGLExtensions::TextureRectangle) |
|
1344 glDisable(GL_TEXTURE_RECTANGLE_NV); |
|
1345 glDisable(GL_STENCIL_TEST); |
|
1346 glDisable(GL_CULL_FACE); |
|
1347 glDisable(GL_LIGHTING); |
|
1348 glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE); |
|
1349 } |
|
1350 |
|
1351 d->offscreen.begin(); |
|
1352 |
|
1353 glViewport(0, 0, sz.width(), sz.height()); // XXX (Embedded): We need a solution for GLWidgets that draw in a part or a bigger surface... |
|
1354 glMatrixMode(GL_PROJECTION); |
|
1355 glLoadIdentity(); |
|
1356 #ifdef QT_OPENGL_ES |
|
1357 glOrthof(0, sz.width(), sz.height(), 0, -999999, 999999); |
|
1358 #else |
|
1359 glOrtho(0, sz.width(), sz.height(), 0, -999999, 999999); |
|
1360 #endif |
|
1361 glMatrixMode(GL_MODELVIEW); |
|
1362 glLoadIdentity(); |
|
1363 glEnable(GL_BLEND); |
|
1364 d->composition_mode = QPainter::CompositionMode_SourceOver; |
|
1365 |
|
1366 #ifdef QT_OPENGL_ES |
|
1367 d->max_texture_size = ctx->d_func()->maxTextureSize(); |
|
1368 #else |
|
1369 bool shared_ctx = QGLContext::areSharing(d->device->context(), d->shader_ctx); |
|
1370 |
|
1371 if (shared_ctx) { |
|
1372 d->max_texture_size = d->shader_ctx->d_func()->maxTextureSize(); |
|
1373 } else { |
|
1374 d->max_texture_size = ctx->d_func()->maxTextureSize(); |
|
1375 |
|
1376 if (d->shader_ctx) { |
|
1377 d->shader_ctx->makeCurrent(); |
|
1378 glBindTexture(GL_TEXTURE_1D, 0); |
|
1379 glDeleteTextures(1, &d->grad_palette); |
|
1380 |
|
1381 if (has_frag_program && d->use_fragment_programs) |
|
1382 glDeleteTextures(1, &d->drawable_texture); |
|
1383 ctx->makeCurrent(); |
|
1384 } |
|
1385 d->shader_ctx = d->device->context(); |
|
1386 glGenTextures(1, &d->grad_palette); |
|
1387 |
|
1388 qt_mask_texture_cache()->clearCache(); |
|
1389 d->use_fragment_programs = has_frag_program; |
|
1390 } |
|
1391 |
|
1392 if (d->use_fragment_programs && (!shared_ctx || sz.width() > d->drawable_texture_size.width() |
|
1393 || sz.height() > d->drawable_texture_size.height())) |
|
1394 { |
|
1395 // delete old texture if size has increased, otherwise it was deleted earlier |
|
1396 if (shared_ctx) |
|
1397 glDeleteTextures(1, &d->drawable_texture); |
|
1398 |
|
1399 d->dirty_drawable_texture = true; |
|
1400 d->drawable_texture_size = QSize(qt_next_power_of_two(sz.width()), |
|
1401 qt_next_power_of_two(sz.height())); |
|
1402 } |
|
1403 #endif |
|
1404 |
|
1405 updateClipRegion(QRegion(), Qt::NoClip); |
|
1406 penChanged(); |
|
1407 brushChanged(); |
|
1408 opacityChanged(); |
|
1409 compositionModeChanged(); |
|
1410 renderHintsChanged(); |
|
1411 transformChanged(); |
|
1412 return true; |
|
1413 } |
|
1414 |
|
1415 bool QOpenGLPaintEngine::end() |
|
1416 { |
|
1417 Q_D(QOpenGLPaintEngine); |
|
1418 d->flushDrawQueue(); |
|
1419 d->offscreen.end(); |
|
1420 QGLContext *ctx = const_cast<QGLContext *>(d->device->context()); |
|
1421 if (!ctx->d_ptr->internal_context) { |
|
1422 glMatrixMode(GL_TEXTURE); |
|
1423 glPopMatrix(); |
|
1424 glMatrixMode(GL_MODELVIEW); |
|
1425 glPopMatrix(); |
|
1426 } |
|
1427 #ifndef QT_OPENGL_ES |
|
1428 if (ctx->d_ptr->internal_context) { |
|
1429 glDisable(GL_SCISSOR_TEST); |
|
1430 } else { |
|
1431 glMatrixMode(GL_PROJECTION); |
|
1432 glLoadMatrixd(&d->projection_matrix[0][0]); |
|
1433 glPopAttrib(); |
|
1434 glPopClientAttrib(); |
|
1435 } |
|
1436 #endif |
|
1437 d->device->endPaint(); |
|
1438 qt_mask_texture_cache()->maintainCache(); |
|
1439 |
|
1440 return true; |
|
1441 } |
|
1442 |
|
1443 void QOpenGLPaintEngine::updateState(const QPaintEngineState &state) |
|
1444 { |
|
1445 Q_D(QOpenGLPaintEngine); |
|
1446 QPaintEngine::DirtyFlags flags = state.state(); |
|
1447 |
|
1448 bool update_fast_pen = false; |
|
1449 |
|
1450 if (flags & DirtyOpacity) { |
|
1451 update_fast_pen = true; |
|
1452 d->opacity = state.opacity(); |
|
1453 if (d->opacity > 1.0f) |
|
1454 d->opacity = 1.0f; |
|
1455 if (d->opacity < 0.f) |
|
1456 d->opacity = 0.f; |
|
1457 // force update |
|
1458 flags |= DirtyPen; |
|
1459 flags |= DirtyBrush; |
|
1460 } |
|
1461 |
|
1462 if (flags & DirtyTransform) { |
|
1463 update_fast_pen = true; |
|
1464 updateMatrix(state.transform()); |
|
1465 // brush setup depends on transform state |
|
1466 if (state.brush().style() != Qt::NoBrush) |
|
1467 flags |= DirtyBrush; |
|
1468 } |
|
1469 |
|
1470 if (flags & DirtyPen) { |
|
1471 update_fast_pen = true; |
|
1472 updatePen(state.pen()); |
|
1473 } |
|
1474 |
|
1475 if (flags & (DirtyBrush | DirtyBrushOrigin)) { |
|
1476 updateBrush(state.brush(), state.brushOrigin()); |
|
1477 } |
|
1478 |
|
1479 if (flags & DirtyFont) { |
|
1480 updateFont(state.font()); |
|
1481 } |
|
1482 |
|
1483 if (state.state() & DirtyClipEnabled) { |
|
1484 if (state.isClipEnabled()) |
|
1485 updateClipRegion(painter()->clipRegion(), Qt::ReplaceClip); |
|
1486 else |
|
1487 updateClipRegion(QRegion(), Qt::NoClip); |
|
1488 } |
|
1489 |
|
1490 if (flags & DirtyClipPath) { |
|
1491 updateClipRegion(QRegion(state.clipPath().toFillPolygon().toPolygon(), |
|
1492 state.clipPath().fillRule()), |
|
1493 state.clipOperation()); |
|
1494 } |
|
1495 |
|
1496 if (flags & DirtyClipRegion) { |
|
1497 updateClipRegion(state.clipRegion(), state.clipOperation()); |
|
1498 } |
|
1499 |
|
1500 if (flags & DirtyHints) { |
|
1501 updateRenderHints(state.renderHints()); |
|
1502 } |
|
1503 |
|
1504 if (flags & DirtyCompositionMode) { |
|
1505 updateCompositionMode(state.compositionMode()); |
|
1506 } |
|
1507 |
|
1508 if (update_fast_pen) { |
|
1509 Q_D(QOpenGLPaintEngine); |
|
1510 qreal pen_width = d->cpen.widthF(); |
|
1511 d->has_fast_pen = |
|
1512 ((pen_width == 0 || (pen_width <= 1 && d->txop <= QTransform::TxTranslate)) |
|
1513 || d->cpen.isCosmetic()) |
|
1514 && d->cpen.style() == Qt::SolidLine |
|
1515 && d->cpen.isSolid(); |
|
1516 } |
|
1517 } |
|
1518 |
|
1519 |
|
1520 void QOpenGLPaintEnginePrivate::setInvMatrixData(const QTransform &inv_matrix) |
|
1521 { |
|
1522 inv_matrix_data[0][0] = inv_matrix.m11(); |
|
1523 inv_matrix_data[1][0] = inv_matrix.m21(); |
|
1524 inv_matrix_data[2][0] = inv_matrix.m31(); |
|
1525 |
|
1526 inv_matrix_data[0][1] = inv_matrix.m12(); |
|
1527 inv_matrix_data[1][1] = inv_matrix.m22(); |
|
1528 inv_matrix_data[2][1] = inv_matrix.m32(); |
|
1529 |
|
1530 inv_matrix_data[0][2] = inv_matrix.m13(); |
|
1531 inv_matrix_data[1][2] = inv_matrix.m23(); |
|
1532 inv_matrix_data[2][2] = inv_matrix.m33(); |
|
1533 } |
|
1534 |
|
1535 |
|
1536 void QOpenGLPaintEnginePrivate::updateGradient(const QBrush &brush, const QRectF &) |
|
1537 { |
|
1538 #ifdef QT_OPENGL_ES |
|
1539 Q_UNUSED(brush); |
|
1540 #else |
|
1541 bool has_mirrored_repeat = QGLExtensions::glExtensions & QGLExtensions::MirroredRepeat; |
|
1542 Qt::BrushStyle style = brush.style(); |
|
1543 |
|
1544 QTransform m = brush.transform(); |
|
1545 |
|
1546 if (has_mirrored_repeat && style == Qt::LinearGradientPattern) { |
|
1547 const QLinearGradient *g = static_cast<const QLinearGradient *>(brush.gradient()); |
|
1548 QTransform m = brush.transform(); |
|
1549 QPointF realStart = g->start(); |
|
1550 QPointF realFinal = g->finalStop(); |
|
1551 QPointF start = m.map(realStart); |
|
1552 QPointF stop; |
|
1553 |
|
1554 if (qFuzzyCompare(m.m11(), m.m22()) && m.m12() == 0.0 && m.m21() == 0.0) { |
|
1555 // It is a simple uniform scale and/or translation |
|
1556 stop = m.map(realFinal); |
|
1557 } else { |
|
1558 // It is not enough to just transform the endpoints. |
|
1559 // We have to make sure the _pattern_ is transformed correctly. |
|
1560 |
|
1561 qreal odx = realFinal.x() - realStart.x(); |
|
1562 qreal ody = realFinal.y() - realStart.y(); |
|
1563 |
|
1564 // nx, ny and dx, dy are normal and gradient direction after transform: |
|
1565 qreal nx = m.m11()*ody - m.m21()*odx; |
|
1566 qreal ny = m.m12()*ody - m.m22()*odx; |
|
1567 |
|
1568 qreal dx = m.m11()*odx + m.m21()*ody; |
|
1569 qreal dy = m.m12()*odx + m.m22()*ody; |
|
1570 |
|
1571 qreal lx = 1 / (dx - dy*nx/ny); |
|
1572 qreal ly = 1 / (dy - dx*ny/nx); |
|
1573 qreal l = 1 / qSqrt(lx*lx+ly*ly); |
|
1574 |
|
1575 stop = start + QPointF(-ny, nx) * l/qSqrt(nx*nx+ny*ny); |
|
1576 } |
|
1577 |
|
1578 float tr[4], f; |
|
1579 tr[0] = stop.x() - start.x(); |
|
1580 tr[1] = stop.y() - start.y(); |
|
1581 f = 1.0 / (tr[0]*tr[0] + tr[1]*tr[1]); |
|
1582 tr[0] *= f; |
|
1583 tr[1] *= f; |
|
1584 tr[2] = 0; |
|
1585 tr[3] = -(start.x()*tr[0] + start.y()*tr[1]); |
|
1586 brush_color[0] = brush_color[1] = brush_color[2] = brush_color[3] = 255; |
|
1587 qt_glColor4ubv(brush_color); |
|
1588 glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR); |
|
1589 glTexGenfv(GL_S, GL_OBJECT_PLANE, tr); |
|
1590 } |
|
1591 |
|
1592 if (use_fragment_programs) { |
|
1593 if (style == Qt::RadialGradientPattern) { |
|
1594 const QRadialGradient *g = static_cast<const QRadialGradient *>(brush.gradient()); |
|
1595 QPointF realCenter = g->center(); |
|
1596 QPointF realFocal = g->focalPoint(); |
|
1597 qreal realRadius = g->radius(); |
|
1598 QTransform translate(1, 0, 0, 1, -realFocal.x(), -realFocal.y()); |
|
1599 QTransform gl_to_qt(1, 0, 0, -1, 0, pdev->height()); |
|
1600 QTransform m = QTransform(matrix).translate(brush_origin.x(), brush_origin.y()); |
|
1601 QTransform inv_matrix = gl_to_qt * (brush.transform() * m).inverted() * translate; |
|
1602 |
|
1603 setInvMatrixData(inv_matrix); |
|
1604 |
|
1605 fmp_data[0] = realCenter.x() - realFocal.x(); |
|
1606 fmp_data[1] = realCenter.y() - realFocal.y(); |
|
1607 |
|
1608 fmp2_m_radius2_data[0] = -fmp_data[0] * fmp_data[0] - fmp_data[1] * fmp_data[1] + realRadius * realRadius; |
|
1609 } else if (style == Qt::ConicalGradientPattern) { |
|
1610 const QConicalGradient *g = static_cast<const QConicalGradient *>(brush.gradient()); |
|
1611 QPointF realCenter = g->center(); |
|
1612 QTransform translate(1, 0, 0, 1, -realCenter.x(), -realCenter.y()); |
|
1613 QTransform gl_to_qt(1, 0, 0, -1, 0, pdev->height()); |
|
1614 QTransform m = QTransform(matrix).translate(brush_origin.x(), brush_origin.y()); |
|
1615 QTransform inv_matrix = gl_to_qt * (brush.transform() * m).inverted() * translate; |
|
1616 |
|
1617 setInvMatrixData(inv_matrix); |
|
1618 |
|
1619 angle_data[0] = -(g->angle() * 2 * Q_PI) / 360.0; |
|
1620 } else if (style == Qt::LinearGradientPattern) { |
|
1621 const QLinearGradient *g = static_cast<const QLinearGradient *>(brush.gradient()); |
|
1622 |
|
1623 QPointF realStart = g->start(); |
|
1624 QPointF realFinal = g->finalStop(); |
|
1625 QTransform translate(1, 0, 0, 1, -realStart.x(), -realStart.y()); |
|
1626 QTransform gl_to_qt(1, 0, 0, -1, 0, pdev->height()); |
|
1627 QTransform m = QTransform(matrix).translate(brush_origin.x(), brush_origin.y()); |
|
1628 QTransform inv_matrix = gl_to_qt * (brush.transform() * m).inverted() * translate; |
|
1629 |
|
1630 setInvMatrixData(inv_matrix); |
|
1631 |
|
1632 QPointF l = realFinal - realStart; |
|
1633 |
|
1634 linear_data[0] = l.x(); |
|
1635 linear_data[1] = l.y(); |
|
1636 |
|
1637 linear_data[2] = 1.0f / (l.x() * l.x() + l.y() * l.y()); |
|
1638 } else if (style != Qt::SolidPattern) { |
|
1639 QTransform gl_to_qt(1, 0, 0, -1, 0, pdev->height()); |
|
1640 QTransform m = QTransform(matrix).translate(brush_origin.x(), brush_origin.y()); |
|
1641 QTransform inv_matrix = gl_to_qt * (brush.transform() * m).inverted(); |
|
1642 |
|
1643 setInvMatrixData(inv_matrix); |
|
1644 } |
|
1645 } |
|
1646 |
|
1647 if (style >= Qt::LinearGradientPattern && style <= Qt::ConicalGradientPattern) { |
|
1648 createGradientPaletteTexture(*brush.gradient()); |
|
1649 } |
|
1650 #endif |
|
1651 } |
|
1652 |
|
1653 |
|
1654 class QOpenGLTessellator : public QTessellator |
|
1655 { |
|
1656 public: |
|
1657 QOpenGLTessellator() {} |
|
1658 ~QOpenGLTessellator() { } |
|
1659 QGLTrapezoid toGLTrapezoid(const Trapezoid &trap); |
|
1660 }; |
|
1661 |
|
1662 QGLTrapezoid QOpenGLTessellator::toGLTrapezoid(const Trapezoid &trap) |
|
1663 { |
|
1664 QGLTrapezoid t; |
|
1665 |
|
1666 t.top = Q27Dot5ToDouble(trap.top); |
|
1667 t.bottom = Q27Dot5ToDouble(trap.bottom); |
|
1668 |
|
1669 Q27Dot5 y = trap.topLeft->y - trap.bottomLeft->y; |
|
1670 |
|
1671 qreal topLeftY = Q27Dot5ToDouble(trap.topLeft->y); |
|
1672 |
|
1673 qreal tx = Q27Dot5ToDouble(trap.topLeft->x); |
|
1674 qreal m = (-tx + Q27Dot5ToDouble(trap.bottomLeft->x)) / Q27Dot5ToDouble(y); |
|
1675 t.topLeftX = tx + m * (topLeftY - t.top); |
|
1676 t.bottomLeftX = tx + m * (topLeftY - t.bottom); |
|
1677 |
|
1678 y = trap.topRight->y - trap.bottomRight->y; |
|
1679 |
|
1680 qreal topRightY = Q27Dot5ToDouble(trap.topRight->y); |
|
1681 |
|
1682 tx = Q27Dot5ToDouble(trap.topRight->x); |
|
1683 m = (-tx + Q27Dot5ToDouble(trap.bottomRight->x)) / Q27Dot5ToDouble(y); |
|
1684 |
|
1685 t.topRightX = tx + m * (topRightY - Q27Dot5ToDouble(trap.top)); |
|
1686 t.bottomRightX = tx + m * (topRightY - Q27Dot5ToDouble(trap.bottom)); |
|
1687 |
|
1688 return t; |
|
1689 } |
|
1690 |
|
1691 class QOpenGLImmediateModeTessellator : public QOpenGLTessellator |
|
1692 { |
|
1693 public: |
|
1694 void addTrap(const Trapezoid &trap); |
|
1695 void tessellate(const QPointF *points, int nPoints, bool winding) { |
|
1696 trapezoids.reserve(trapezoids.size() + nPoints); |
|
1697 setWinding(winding); |
|
1698 QTessellator::tessellate(points, nPoints); |
|
1699 } |
|
1700 |
|
1701 QVector<QGLTrapezoid> trapezoids; |
|
1702 }; |
|
1703 |
|
1704 void QOpenGLImmediateModeTessellator::addTrap(const Trapezoid &trap) |
|
1705 { |
|
1706 trapezoids.append(toGLTrapezoid(trap)); |
|
1707 } |
|
1708 |
|
1709 #ifndef QT_OPENGL_ES |
|
1710 static void drawTrapezoid(const QGLTrapezoid &trap, const qreal offscreenHeight, QGLContext *ctx) |
|
1711 { |
|
1712 qreal minX = qMin(trap.topLeftX, trap.bottomLeftX); |
|
1713 qreal maxX = qMax(trap.topRightX, trap.bottomRightX); |
|
1714 |
|
1715 if (qFuzzyCompare(trap.top, trap.bottom) || qFuzzyCompare(minX, maxX) || |
|
1716 (qFuzzyCompare(trap.topLeftX, trap.topRightX) && qFuzzyCompare(trap.bottomLeftX, trap.bottomRightX))) |
|
1717 return; |
|
1718 |
|
1719 const qreal xpadding = 1.0; |
|
1720 const qreal ypadding = 1.0; |
|
1721 |
|
1722 qreal topDist = offscreenHeight - trap.top; |
|
1723 qreal bottomDist = offscreenHeight - trap.bottom; |
|
1724 |
|
1725 qreal reciprocal = bottomDist / (bottomDist - topDist); |
|
1726 |
|
1727 qreal leftB = trap.bottomLeftX + (trap.topLeftX - trap.bottomLeftX) * reciprocal; |
|
1728 qreal rightB = trap.bottomRightX + (trap.topRightX - trap.bottomRightX) * reciprocal; |
|
1729 |
|
1730 const bool topZero = qFuzzyIsNull(topDist); |
|
1731 |
|
1732 reciprocal = topZero ? 1.0 / bottomDist : 1.0 / topDist; |
|
1733 |
|
1734 qreal leftA = topZero ? (trap.bottomLeftX - leftB) * reciprocal : (trap.topLeftX - leftB) * reciprocal; |
|
1735 qreal rightA = topZero ? (trap.bottomRightX - rightB) * reciprocal : (trap.topRightX - rightB) * reciprocal; |
|
1736 |
|
1737 qreal invLeftA = qFuzzyIsNull(leftA) ? 0.0 : 1.0 / leftA; |
|
1738 qreal invRightA = qFuzzyIsNull(rightA) ? 0.0 : 1.0 / rightA; |
|
1739 |
|
1740 // fragment program needs the negative of invRightA as it mirrors the line |
|
1741 glTexCoord4f(topDist, bottomDist, invLeftA, -invRightA); |
|
1742 glMultiTexCoord4f(GL_TEXTURE1, leftA, leftB, rightA, rightB); |
|
1743 |
|
1744 qreal topY = trap.top - ypadding; |
|
1745 qreal bottomY = trap.bottom + ypadding; |
|
1746 |
|
1747 qreal bounds_bottomLeftX = leftA * (offscreenHeight - bottomY) + leftB; |
|
1748 qreal bounds_bottomRightX = rightA * (offscreenHeight - bottomY) + rightB; |
|
1749 qreal bounds_topLeftX = leftA * (offscreenHeight - topY) + leftB; |
|
1750 qreal bounds_topRightX = rightA * (offscreenHeight - topY) + rightB; |
|
1751 |
|
1752 QPointF leftNormal(1, -leftA); |
|
1753 leftNormal /= qSqrt(leftNormal.x() * leftNormal.x() + leftNormal.y() * leftNormal.y()); |
|
1754 QPointF rightNormal(1, -rightA); |
|
1755 rightNormal /= qSqrt(rightNormal.x() * rightNormal.x() + rightNormal.y() * rightNormal.y()); |
|
1756 |
|
1757 qreal left_padding = xpadding / qAbs(leftNormal.x()); |
|
1758 qreal right_padding = xpadding / qAbs(rightNormal.x()); |
|
1759 |
|
1760 glVertex2d(bounds_topLeftX - left_padding, topY); |
|
1761 glVertex2d(bounds_topRightX + right_padding, topY); |
|
1762 glVertex2d(bounds_bottomRightX + right_padding, bottomY); |
|
1763 glVertex2d(bounds_bottomLeftX - left_padding, bottomY); |
|
1764 |
|
1765 glTexCoord4f(0.0f, 0.0f, 0.0f, 1.0f); |
|
1766 } |
|
1767 #endif // !Q_WS_QWS |
|
1768 |
|
1769 class QOpenGLTrapezoidToArrayTessellator : public QOpenGLTessellator |
|
1770 { |
|
1771 public: |
|
1772 QOpenGLTrapezoidToArrayTessellator() : vertices(0), allocated(0), size(0) {} |
|
1773 ~QOpenGLTrapezoidToArrayTessellator() { free(vertices); } |
|
1774 q_vertexType *vertices; |
|
1775 int allocated; |
|
1776 int size; |
|
1777 QRectF bounds; |
|
1778 void addTrap(const Trapezoid &trap); |
|
1779 void tessellate(const QPointF *points, int nPoints, bool winding) { |
|
1780 size = 0; |
|
1781 setWinding(winding); |
|
1782 bounds = QTessellator::tessellate(points, nPoints); |
|
1783 } |
|
1784 }; |
|
1785 |
|
1786 void QOpenGLTrapezoidToArrayTessellator::addTrap(const Trapezoid &trap) |
|
1787 { |
|
1788 // On OpenGL ES we convert the trap to 2 triangles |
|
1789 #ifndef QT_OPENGL_ES |
|
1790 if (size > allocated - 8) { |
|
1791 #else |
|
1792 if (size > allocated - 12) { |
|
1793 #endif |
|
1794 allocated = qMax(2*allocated, 512); |
|
1795 vertices = (q_vertexType *)realloc(vertices, allocated * sizeof(q_vertexType)); |
|
1796 } |
|
1797 |
|
1798 QGLTrapezoid t = toGLTrapezoid(trap); |
|
1799 |
|
1800 #ifndef QT_OPENGL_ES |
|
1801 vertices[size++] = f2vt(t.topLeftX); |
|
1802 vertices[size++] = f2vt(t.top); |
|
1803 vertices[size++] = f2vt(t.topRightX); |
|
1804 vertices[size++] = f2vt(t.top); |
|
1805 vertices[size++] = f2vt(t.bottomRightX); |
|
1806 vertices[size++] = f2vt(t.bottom); |
|
1807 vertices[size++] = f2vt(t.bottomLeftX); |
|
1808 vertices[size++] = f2vt(t.bottom); |
|
1809 #else |
|
1810 // First triangle |
|
1811 vertices[size++] = f2vt(t.topLeftX); |
|
1812 vertices[size++] = f2vt(t.top); |
|
1813 vertices[size++] = f2vt(t.topRightX); |
|
1814 vertices[size++] = f2vt(t.top); |
|
1815 vertices[size++] = f2vt(t.bottomRightX); |
|
1816 vertices[size++] = f2vt(t.bottom); |
|
1817 |
|
1818 // Second triangle |
|
1819 vertices[size++] = f2vt(t.bottomLeftX); |
|
1820 vertices[size++] = f2vt(t.bottom); |
|
1821 vertices[size++] = f2vt(t.topLeftX); |
|
1822 vertices[size++] = f2vt(t.top); |
|
1823 vertices[size++] = f2vt(t.bottomRightX); |
|
1824 vertices[size++] = f2vt(t.bottom); |
|
1825 #endif |
|
1826 } |
|
1827 |
|
1828 |
|
1829 void QOpenGLPaintEnginePrivate::fillPolygon_dev(const QPointF *polygonPoints, int pointCount, |
|
1830 Qt::FillRule fill) |
|
1831 { |
|
1832 QOpenGLTrapezoidToArrayTessellator tessellator; |
|
1833 tessellator.tessellate(polygonPoints, pointCount, fill == Qt::WindingFill); |
|
1834 |
|
1835 DEBUG_ONCE qDebug() << "QOpenGLPaintEnginePrivate: Drawing polygon with" << pointCount << "points using fillPolygon_dev"; |
|
1836 |
|
1837 setGradientOps(cbrush, tessellator.bounds); |
|
1838 |
|
1839 bool fast_style = current_style == Qt::LinearGradientPattern |
|
1840 || current_style == Qt::SolidPattern; |
|
1841 |
|
1842 #ifndef QT_OPENGL_ES |
|
1843 GLenum geometry_mode = GL_QUADS; |
|
1844 #else |
|
1845 GLenum geometry_mode = GL_TRIANGLES; |
|
1846 #endif |
|
1847 |
|
1848 if (use_fragment_programs && !(fast_style && has_fast_composition_mode)) { |
|
1849 composite(geometry_mode, tessellator.vertices, tessellator.size / 2); |
|
1850 } else { |
|
1851 glVertexPointer(2, q_vertexTypeEnum, 0, tessellator.vertices); |
|
1852 glEnableClientState(GL_VERTEX_ARRAY); |
|
1853 glDrawArrays(geometry_mode, 0, tessellator.size/2); |
|
1854 glDisableClientState(GL_VERTEX_ARRAY); |
|
1855 } |
|
1856 } |
|
1857 |
|
1858 |
|
1859 inline void QOpenGLPaintEnginePrivate::lineToStencil(qreal x, qreal y) |
|
1860 { |
|
1861 tess_points.add(QPointF(x, y)); |
|
1862 |
|
1863 if (x > max_x) |
|
1864 max_x = x; |
|
1865 else if (x < min_x) |
|
1866 min_x = x; |
|
1867 if (y > max_y) |
|
1868 max_y = y; |
|
1869 else if (y < min_y) |
|
1870 min_y = y; |
|
1871 } |
|
1872 |
|
1873 inline void QOpenGLPaintEnginePrivate::curveToStencil(const QPointF &cp1, const QPointF &cp2, const QPointF &ep) |
|
1874 { |
|
1875 qreal inverseScaleHalf = inverseScale / 2; |
|
1876 |
|
1877 QBezier beziers[32]; |
|
1878 beziers[0] = QBezier::fromPoints(tess_points.last(), cp1, cp2, ep); |
|
1879 QBezier *b = beziers; |
|
1880 while (b >= beziers) { |
|
1881 // check if we can pop the top bezier curve from the stack |
|
1882 qreal l = qAbs(b->x4 - b->x1) + qAbs(b->y4 - b->y1); |
|
1883 qreal d; |
|
1884 if (l > inverseScale) { |
|
1885 d = qAbs( (b->x4 - b->x1)*(b->y1 - b->y2) - (b->y4 - b->y1)*(b->x1 - b->x2) ) |
|
1886 + qAbs( (b->x4 - b->x1)*(b->y1 - b->y3) - (b->y4 - b->y1)*(b->x1 - b->x3) ); |
|
1887 d /= l; |
|
1888 } else { |
|
1889 d = qAbs(b->x1 - b->x2) + qAbs(b->y1 - b->y2) + |
|
1890 qAbs(b->x1 - b->x3) + qAbs(b->y1 - b->y3); |
|
1891 } |
|
1892 if (d < inverseScaleHalf || b == beziers + 31) { |
|
1893 // good enough, we pop it off and add the endpoint |
|
1894 lineToStencil(b->x4, b->y4); |
|
1895 --b; |
|
1896 } else { |
|
1897 // split, second half of the polygon goes lower into the stack |
|
1898 b->split(b+1, b); |
|
1899 ++b; |
|
1900 } |
|
1901 } |
|
1902 } |
|
1903 |
|
1904 |
|
1905 void QOpenGLPaintEnginePrivate::pathToVertexArrays(const QPainterPath &path) |
|
1906 { |
|
1907 const QPainterPath::Element &first = path.elementAt(0); |
|
1908 min_x = max_x = first.x; |
|
1909 min_y = max_y = first.y; |
|
1910 |
|
1911 tess_points.reset(); |
|
1912 tess_points_stops.clear(); |
|
1913 lineToStencil(first.x, first.y); |
|
1914 |
|
1915 for (int i=1; i<path.elementCount(); ++i) { |
|
1916 const QPainterPath::Element &e = path.elementAt(i); |
|
1917 switch (e.type) { |
|
1918 case QPainterPath::MoveToElement: |
|
1919 tess_points_stops.append(tess_points.size()); |
|
1920 lineToStencil(e.x, e.y); |
|
1921 break; |
|
1922 case QPainterPath::LineToElement: |
|
1923 lineToStencil(e.x, e.y); |
|
1924 break; |
|
1925 case QPainterPath::CurveToElement: |
|
1926 curveToStencil(e, path.elementAt(i+1), path.elementAt(i+2)); |
|
1927 i+=2; |
|
1928 break; |
|
1929 default: |
|
1930 break; |
|
1931 } |
|
1932 } |
|
1933 lineToStencil(first.x, first.y); |
|
1934 tess_points_stops.append(tess_points.size()); |
|
1935 } |
|
1936 |
|
1937 |
|
1938 void QOpenGLPaintEnginePrivate::drawVertexArrays() |
|
1939 { |
|
1940 glEnableClientState(GL_VERTEX_ARRAY); |
|
1941 glVertexPointer(2, GL_DOUBLE, 0, tess_points.data()); |
|
1942 int previous_stop = 0; |
|
1943 foreach(int stop, tess_points_stops) { |
|
1944 glDrawArrays(GL_TRIANGLE_FAN, previous_stop, stop-previous_stop); |
|
1945 previous_stop = stop; |
|
1946 } |
|
1947 glDisableClientState(GL_VERTEX_ARRAY); |
|
1948 } |
|
1949 |
|
1950 void QOpenGLPaintEnginePrivate::fillVertexArray(Qt::FillRule fillRule) |
|
1951 { |
|
1952 Q_Q(QOpenGLPaintEngine); |
|
1953 |
|
1954 QRect rect = dirty_stencil.boundingRect(); |
|
1955 |
|
1956 if (use_system_clip) |
|
1957 rect = q->systemClip().intersected(dirty_stencil).boundingRect(); |
|
1958 |
|
1959 glStencilMask(~0); |
|
1960 |
|
1961 if (!rect.isEmpty()) { |
|
1962 disableClipping(); |
|
1963 |
|
1964 glEnable(GL_SCISSOR_TEST); |
|
1965 |
|
1966 const int left = rect.left(); |
|
1967 const int width = rect.width(); |
|
1968 const int bottom = device->size().height() - (rect.bottom() + 1); |
|
1969 const int height = rect.height(); |
|
1970 |
|
1971 glScissor(left, bottom, width, height); |
|
1972 |
|
1973 glClearStencil(0); |
|
1974 glClear(GL_STENCIL_BUFFER_BIT); |
|
1975 dirty_stencil -= rect; |
|
1976 |
|
1977 glDisable(GL_SCISSOR_TEST); |
|
1978 |
|
1979 enableClipping(); |
|
1980 } |
|
1981 |
|
1982 // Enable stencil. |
|
1983 glEnable(GL_STENCIL_TEST); |
|
1984 |
|
1985 // Disable color writes. |
|
1986 glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE); |
|
1987 |
|
1988 GLuint stencilMask = 0; |
|
1989 |
|
1990 if (fillRule == Qt::OddEvenFill) { |
|
1991 stencilMask = 1; |
|
1992 |
|
1993 // Enable stencil writes. |
|
1994 glStencilMask(stencilMask); |
|
1995 |
|
1996 // Set stencil xor mode. |
|
1997 glStencilOp(GL_KEEP, GL_KEEP, GL_INVERT); |
|
1998 |
|
1999 // Disable stencil func. |
|
2000 glStencilFunc(GL_ALWAYS, 0, ~0); |
|
2001 |
|
2002 drawVertexArrays(); |
|
2003 } else if (fillRule == Qt::WindingFill) { |
|
2004 stencilMask = ~0; |
|
2005 |
|
2006 if (has_stencil_face_ext) { |
|
2007 QGL_FUNC_CONTEXT; |
|
2008 glEnable(GL_STENCIL_TEST_TWO_SIDE_EXT); |
|
2009 |
|
2010 glActiveStencilFaceEXT(GL_BACK); |
|
2011 glStencilOp(GL_KEEP, GL_KEEP, GL_DECR_WRAP_EXT); |
|
2012 glStencilFunc(GL_ALWAYS, 0, ~0); |
|
2013 |
|
2014 glActiveStencilFaceEXT(GL_FRONT); |
|
2015 glStencilOp(GL_KEEP, GL_KEEP, GL_INCR_WRAP_EXT); |
|
2016 glStencilFunc(GL_ALWAYS, 0, ~0); |
|
2017 |
|
2018 drawVertexArrays(); |
|
2019 |
|
2020 glDisable(GL_STENCIL_TEST_TWO_SIDE_EXT); |
|
2021 } else { |
|
2022 glStencilFunc(GL_ALWAYS, 0, ~0); |
|
2023 glEnable(GL_CULL_FACE); |
|
2024 |
|
2025 glCullFace(GL_BACK); |
|
2026 glStencilOp(GL_KEEP, GL_KEEP, GL_INCR_WRAP_EXT); |
|
2027 drawVertexArrays(); |
|
2028 |
|
2029 glCullFace(GL_FRONT); |
|
2030 glStencilOp(GL_KEEP, GL_KEEP, GL_DECR_WRAP_EXT); |
|
2031 drawVertexArrays(); |
|
2032 |
|
2033 glDisable(GL_CULL_FACE); |
|
2034 } |
|
2035 } |
|
2036 |
|
2037 // Enable color writes. |
|
2038 glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE); |
|
2039 glStencilMask(stencilMask); |
|
2040 |
|
2041 setGradientOps(cbrush, QRectF(QPointF(min_x, min_y), QSizeF(max_x - min_x, max_y - min_y))); |
|
2042 |
|
2043 bool fast_fill = has_fast_composition_mode && (current_style == Qt::LinearGradientPattern || current_style == Qt::SolidPattern); |
|
2044 |
|
2045 if (use_fragment_programs && !fast_fill) { |
|
2046 DEBUG_ONCE qDebug() << "QOpenGLPaintEnginePrivate: Drawing polygon using stencil method (fragment programs)"; |
|
2047 QRectF rect(QPointF(min_x, min_y), QSizeF(max_x - min_x, max_y - min_y)); |
|
2048 |
|
2049 // Enable stencil func. |
|
2050 glStencilFunc(GL_NOTEQUAL, 0, stencilMask); |
|
2051 glStencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE); |
|
2052 composite(rect); |
|
2053 } else { |
|
2054 DEBUG_ONCE qDebug() << "QOpenGLPaintEnginePrivate: Drawing polygon using stencil method (no fragment programs)"; |
|
2055 |
|
2056 // Enable stencil func. |
|
2057 glStencilFunc(GL_NOTEQUAL, 0, stencilMask); |
|
2058 glStencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE); |
|
2059 #ifndef QT_OPENGL_ES |
|
2060 glBegin(GL_QUADS); |
|
2061 glVertex2f(min_x, min_y); |
|
2062 glVertex2f(max_x, min_y); |
|
2063 glVertex2f(max_x, max_y); |
|
2064 glVertex2f(min_x, max_y); |
|
2065 glEnd(); |
|
2066 #endif |
|
2067 } |
|
2068 |
|
2069 // Disable stencil writes. |
|
2070 glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP); |
|
2071 glStencilMask(0); |
|
2072 glDisable(GL_STENCIL_TEST); |
|
2073 } |
|
2074 |
|
2075 void QOpenGLPaintEnginePrivate::fillPath(const QPainterPath &path) |
|
2076 { |
|
2077 if (path.isEmpty()) |
|
2078 return; |
|
2079 |
|
2080 if (use_stencil_method && !high_quality_antialiasing) { |
|
2081 pathToVertexArrays(path); |
|
2082 fillVertexArray(path.fillRule()); |
|
2083 return; |
|
2084 } |
|
2085 |
|
2086 glMatrixMode(GL_MODELVIEW); |
|
2087 glLoadIdentity(); |
|
2088 |
|
2089 if (high_quality_antialiasing) |
|
2090 drawOffscreenPath(path); |
|
2091 else { |
|
2092 QPolygonF poly = path.toFillPolygon(matrix); |
|
2093 fillPolygon_dev(poly.data(), poly.count(), |
|
2094 path.fillRule()); |
|
2095 } |
|
2096 |
|
2097 updateGLMatrix(); |
|
2098 } |
|
2099 |
|
2100 |
|
2101 static inline bool needsEmulation(Qt::BrushStyle style) |
|
2102 { |
|
2103 return !(style == Qt::SolidPattern |
|
2104 || (style == Qt::LinearGradientPattern |
|
2105 && (QGLExtensions::glExtensions & QGLExtensions::MirroredRepeat))); |
|
2106 } |
|
2107 |
|
2108 void QOpenGLPaintEnginePrivate::updateUseEmulation() |
|
2109 { |
|
2110 use_emulation = !use_fragment_programs |
|
2111 && ((has_pen && needsEmulation(pen_brush_style)) |
|
2112 || (has_brush && needsEmulation(brush_style))); |
|
2113 } |
|
2114 |
|
2115 void QOpenGLPaintEngine::updatePen(const QPen &pen) |
|
2116 { |
|
2117 Q_D(QOpenGLPaintEngine); |
|
2118 Qt::PenStyle pen_style = pen.style(); |
|
2119 d->pen_brush_style = pen.brush().style(); |
|
2120 d->cpen = pen; |
|
2121 d->has_pen = (pen_style != Qt::NoPen) && (d->pen_brush_style != Qt::NoBrush); |
|
2122 d->updateUseEmulation(); |
|
2123 |
|
2124 if (pen.isCosmetic()) { |
|
2125 GLfloat width = pen.widthF() == 0.0f ? 1.0f : pen.widthF(); |
|
2126 glLineWidth(width); |
|
2127 glPointSize(width); |
|
2128 } |
|
2129 |
|
2130 if (d->pen_brush_style >= Qt::LinearGradientPattern |
|
2131 && d->pen_brush_style <= Qt::ConicalGradientPattern) |
|
2132 { |
|
2133 d->setGLPen(Qt::white); |
|
2134 } else { |
|
2135 d->setGLPen(pen.color()); |
|
2136 } |
|
2137 |
|
2138 d->updateFastPen(); |
|
2139 } |
|
2140 |
|
2141 void QOpenGLPaintEngine::updateBrush(const QBrush &brush, const QPointF &origin) |
|
2142 { |
|
2143 Q_D(QOpenGLPaintEngine); |
|
2144 d->cbrush = brush; |
|
2145 d->brush_style = brush.style(); |
|
2146 d->brush_origin = origin; |
|
2147 d->has_brush = (d->brush_style != Qt::NoBrush); |
|
2148 d->updateUseEmulation(); |
|
2149 } |
|
2150 |
|
2151 void QOpenGLPaintEngine::updateFont(const QFont &) |
|
2152 { |
|
2153 } |
|
2154 |
|
2155 void QOpenGLPaintEngine::updateMatrix(const QTransform &mtx) |
|
2156 { |
|
2157 Q_D(QOpenGLPaintEngine); |
|
2158 |
|
2159 d->matrix = mtx; |
|
2160 |
|
2161 d->mv_matrix[0][0] = mtx.m11(); |
|
2162 d->mv_matrix[0][1] = mtx.m12(); |
|
2163 d->mv_matrix[0][2] = 0; |
|
2164 d->mv_matrix[0][3] = mtx.m13(); |
|
2165 |
|
2166 d->mv_matrix[1][0] = mtx.m21(); |
|
2167 d->mv_matrix[1][1] = mtx.m22(); |
|
2168 d->mv_matrix[1][2] = 0; |
|
2169 d->mv_matrix[1][3] = mtx.m23(); |
|
2170 |
|
2171 d->mv_matrix[2][0] = 0; |
|
2172 d->mv_matrix[2][1] = 0; |
|
2173 d->mv_matrix[2][2] = 1; |
|
2174 d->mv_matrix[2][3] = 0; |
|
2175 |
|
2176 d->mv_matrix[3][0] = mtx.dx(); |
|
2177 d->mv_matrix[3][1] = mtx.dy(); |
|
2178 d->mv_matrix[3][2] = 0; |
|
2179 d->mv_matrix[3][3] = mtx.m33(); |
|
2180 |
|
2181 d->txop = mtx.type(); |
|
2182 |
|
2183 // 1/10000 == 0.0001, so we have good enough res to cover curves |
|
2184 // that span the entire widget... |
|
2185 d->inverseScale = qMax(1 / qMax( qMax(qAbs(mtx.m11()), qAbs(mtx.m22())), |
|
2186 qMax(qAbs(mtx.m12()), qAbs(mtx.m21())) ), |
|
2187 qreal(0.0001)); |
|
2188 |
|
2189 d->updateGLMatrix(); |
|
2190 d->updateFastPen(); |
|
2191 } |
|
2192 |
|
2193 void QOpenGLPaintEnginePrivate::updateGLMatrix() const |
|
2194 { |
|
2195 glMatrixMode(GL_MODELVIEW); |
|
2196 #ifndef QT_OPENGL_ES |
|
2197 glLoadMatrixd(&mv_matrix[0][0]); |
|
2198 #else |
|
2199 glLoadMatrixf(&mv_matrix[0][0]); |
|
2200 #endif |
|
2201 } |
|
2202 |
|
2203 void QOpenGLPaintEnginePrivate::disableClipping() |
|
2204 { |
|
2205 glDisable(GL_DEPTH_TEST); |
|
2206 glDisable(GL_SCISSOR_TEST); |
|
2207 } |
|
2208 |
|
2209 void QOpenGLPaintEnginePrivate::enableClipping() |
|
2210 { |
|
2211 Q_Q(QOpenGLPaintEngine); |
|
2212 if (!q->state()->hasClipping) |
|
2213 return; |
|
2214 |
|
2215 if (q->state()->fastClip.isEmpty()) |
|
2216 glEnable(GL_DEPTH_TEST); |
|
2217 else |
|
2218 updateDepthClip(); // this will enable the scissor test |
|
2219 } |
|
2220 |
|
2221 void QOpenGLPaintEnginePrivate::updateDepthClip() |
|
2222 { |
|
2223 Q_Q(QOpenGLPaintEngine); |
|
2224 |
|
2225 ++q->state()->depthClipId; |
|
2226 |
|
2227 glDisable(GL_DEPTH_TEST); |
|
2228 glDisable(GL_SCISSOR_TEST); |
|
2229 |
|
2230 if (!q->state()->hasClipping) |
|
2231 return; |
|
2232 |
|
2233 QRect fastClip; |
|
2234 if (q->state()->clipEnabled) { |
|
2235 fastClip = q->state()->fastClip; |
|
2236 } else if (use_system_clip && q->systemClip().rects().count() == 1) { |
|
2237 fastClip = q->systemClip().rects().at(0); |
|
2238 } |
|
2239 |
|
2240 if (!fastClip.isEmpty()) { |
|
2241 glEnable(GL_SCISSOR_TEST); |
|
2242 |
|
2243 const int left = fastClip.left(); |
|
2244 const int width = fastClip.width(); |
|
2245 const int bottom = device->size().height() - (fastClip.bottom() + 1); |
|
2246 const int height = fastClip.height(); |
|
2247 |
|
2248 glScissor(left, bottom, width, height); |
|
2249 return; |
|
2250 } |
|
2251 |
|
2252 #if defined(QT_OPENGL_ES_1) || defined(QT_OPENGL_ES_2) || defined(QT_OPENGL_ES_1_CL) |
|
2253 glClearDepthf(0.0f); |
|
2254 #else |
|
2255 glClearDepth(0.0f); |
|
2256 #endif |
|
2257 |
|
2258 glEnable(GL_DEPTH_TEST); |
|
2259 glDepthMask(GL_TRUE); |
|
2260 glClear(GL_DEPTH_BUFFER_BIT); |
|
2261 |
|
2262 glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE); |
|
2263 glDepthFunc(GL_ALWAYS); |
|
2264 |
|
2265 const QVector<QRect> rects = q->state()->clipEnabled ? q->state()->clipRegion.rects() : q->systemClip().rects(); |
|
2266 |
|
2267 // rectangle count * 2 (triangles) * vertex count * component count (Z omitted) |
|
2268 QDataBuffer<q_vertexType> clipVertex(rects.size()*2*3*2); |
|
2269 for (int i = 0; i < rects.size(); ++i) { |
|
2270 q_vertexType x = i2vt(rects.at(i).left()); |
|
2271 q_vertexType w = i2vt(rects.at(i).width()); |
|
2272 q_vertexType h = i2vt(rects.at(i).height()); |
|
2273 q_vertexType y = i2vt(rects.at(i).top()); |
|
2274 |
|
2275 // First triangle |
|
2276 clipVertex.add(x); |
|
2277 clipVertex.add(y); |
|
2278 |
|
2279 clipVertex.add(x); |
|
2280 clipVertex.add(y + h); |
|
2281 |
|
2282 clipVertex.add(x + w); |
|
2283 clipVertex.add(y); |
|
2284 |
|
2285 // Second triangle |
|
2286 clipVertex.add(x); |
|
2287 clipVertex.add(y + h); |
|
2288 |
|
2289 clipVertex.add(x + w); |
|
2290 clipVertex.add(y + h); |
|
2291 |
|
2292 clipVertex.add (x + w); |
|
2293 clipVertex.add(y); |
|
2294 } |
|
2295 |
|
2296 if (rects.size()) { |
|
2297 glMatrixMode(GL_MODELVIEW); |
|
2298 glLoadIdentity(); |
|
2299 |
|
2300 glEnableClientState(GL_VERTEX_ARRAY); |
|
2301 glVertexPointer(2, q_vertexTypeEnum, 0, clipVertex.data()); |
|
2302 |
|
2303 glDrawArrays(GL_TRIANGLES, 0, rects.size()*2*3); |
|
2304 glDisableClientState(GL_VERTEX_ARRAY); |
|
2305 updateGLMatrix(); |
|
2306 } |
|
2307 |
|
2308 glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE); |
|
2309 glDepthMask(GL_FALSE); |
|
2310 glDepthFunc(GL_LEQUAL); |
|
2311 } |
|
2312 |
|
2313 void QOpenGLPaintEnginePrivate::systemStateChanged() |
|
2314 { |
|
2315 Q_Q(QOpenGLPaintEngine); |
|
2316 if (q->painter()->hasClipping()) |
|
2317 q->updateClipRegion(q->painter()->clipRegion(), Qt::ReplaceClip); |
|
2318 else |
|
2319 q->updateClipRegion(QRegion(), Qt::NoClip); |
|
2320 } |
|
2321 |
|
2322 void QOpenGLPaintEngine::updateClipRegion(const QRegion &clipRegion, Qt::ClipOperation op) |
|
2323 { |
|
2324 Q_D(QOpenGLPaintEngine); |
|
2325 |
|
2326 // clipping is only supported when a stencil or depth buffer is |
|
2327 // available |
|
2328 if (!d->device->format().depth()) |
|
2329 return; |
|
2330 |
|
2331 d->use_system_clip = false; |
|
2332 QRegion sysClip = systemClip(); |
|
2333 if (!sysClip.isEmpty()) { |
|
2334 if (d->pdev->devType() != QInternal::Widget) { |
|
2335 d->use_system_clip = true; |
|
2336 } else { |
|
2337 #ifndef Q_WS_QWS |
|
2338 // Only use the system clip if we're currently rendering a widget with a GL painter. |
|
2339 if (d->currentClipWidget) { |
|
2340 QWidgetPrivate *widgetPrivate = qt_widget_private(d->currentClipWidget->window()); |
|
2341 d->use_system_clip = widgetPrivate->extra && widgetPrivate->extra->inRenderWithPainter; |
|
2342 } |
|
2343 #endif |
|
2344 } |
|
2345 } |
|
2346 |
|
2347 d->flushDrawQueue(); |
|
2348 |
|
2349 if (op == Qt::NoClip && !d->use_system_clip) { |
|
2350 state()->hasClipping = false; |
|
2351 state()->clipRegion = QRegion(); |
|
2352 d->updateDepthClip(); |
|
2353 return; |
|
2354 } |
|
2355 |
|
2356 bool isScreenClip = false; |
|
2357 if (!d->use_system_clip) { |
|
2358 QVector<QRect> untransformedRects = clipRegion.rects(); |
|
2359 |
|
2360 if (untransformedRects.size() == 1) { |
|
2361 QPainterPath path; |
|
2362 path.addRect(untransformedRects[0]); |
|
2363 path = d->matrix.map(path); |
|
2364 |
|
2365 if (path.contains(QRectF(QPointF(), d->device->size()))) |
|
2366 isScreenClip = true; |
|
2367 } |
|
2368 } |
|
2369 |
|
2370 QRegion region = isScreenClip ? QRegion() : clipRegion * d->matrix; |
|
2371 switch (op) { |
|
2372 case Qt::NoClip: |
|
2373 if (!d->use_system_clip) |
|
2374 break; |
|
2375 state()->clipRegion = sysClip; |
|
2376 break; |
|
2377 case Qt::IntersectClip: |
|
2378 if (isScreenClip) |
|
2379 return; |
|
2380 if (state()->hasClipping) { |
|
2381 state()->clipRegion &= region; |
|
2382 break; |
|
2383 } |
|
2384 // fall through |
|
2385 case Qt::ReplaceClip: |
|
2386 if (d->use_system_clip) |
|
2387 state()->clipRegion = region & sysClip; |
|
2388 else |
|
2389 state()->clipRegion = region; |
|
2390 break; |
|
2391 case Qt::UniteClip: |
|
2392 state()->clipRegion |= region; |
|
2393 if (d->use_system_clip) |
|
2394 state()->clipRegion &= sysClip; |
|
2395 break; |
|
2396 default: |
|
2397 break; |
|
2398 } |
|
2399 |
|
2400 if (isScreenClip) { |
|
2401 state()->hasClipping = false; |
|
2402 state()->clipRegion = QRegion(); |
|
2403 } else { |
|
2404 state()->hasClipping = op != Qt::NoClip || d->use_system_clip; |
|
2405 } |
|
2406 |
|
2407 if (state()->hasClipping && state()->clipRegion.rects().size() == 1) |
|
2408 state()->fastClip = state()->clipRegion.rects().at(0); |
|
2409 else |
|
2410 state()->fastClip = QRect(); |
|
2411 |
|
2412 d->updateDepthClip(); |
|
2413 } |
|
2414 |
|
2415 void QOpenGLPaintEngine::updateRenderHints(QPainter::RenderHints hints) |
|
2416 { |
|
2417 Q_D(QOpenGLPaintEngine); |
|
2418 |
|
2419 d->flushDrawQueue(); |
|
2420 d->use_smooth_pixmap_transform = bool(hints & QPainter::SmoothPixmapTransform); |
|
2421 if ((hints & QPainter::Antialiasing) || (hints & QPainter::HighQualityAntialiasing)) { |
|
2422 if (d->use_fragment_programs && QGLOffscreen::isSupported() |
|
2423 && (hints & QPainter::HighQualityAntialiasing)) { |
|
2424 d->high_quality_antialiasing = true; |
|
2425 } else { |
|
2426 d->high_quality_antialiasing = false; |
|
2427 if (QGLExtensions::glExtensions & QGLExtensions::SampleBuffers) |
|
2428 glEnable(GL_MULTISAMPLE); |
|
2429 } |
|
2430 } else { |
|
2431 d->high_quality_antialiasing = false; |
|
2432 if (QGLExtensions::glExtensions & QGLExtensions::SampleBuffers) |
|
2433 glDisable(GL_MULTISAMPLE); |
|
2434 } |
|
2435 |
|
2436 if (d->high_quality_antialiasing) { |
|
2437 d->offscreen.initialize(); |
|
2438 |
|
2439 if (!d->offscreen.isValid()) { |
|
2440 DEBUG_ONCE_STR("Unable to initialize offscreen, disabling high quality antialiasing"); |
|
2441 d->high_quality_antialiasing = false; |
|
2442 if (QGLExtensions::glExtensions & QGLExtensions::SampleBuffers) |
|
2443 glEnable(GL_MULTISAMPLE); |
|
2444 } |
|
2445 } |
|
2446 |
|
2447 d->has_antialiasing = d->high_quality_antialiasing |
|
2448 || ((hints & QPainter::Antialiasing) |
|
2449 && (QGLExtensions::glExtensions & QGLExtensions::SampleBuffers)); |
|
2450 } |
|
2451 |
|
2452 |
|
2453 void QOpenGLPaintEnginePrivate::setPorterDuffData(float a, float b, float x, float y, float z) |
|
2454 { |
|
2455 porterduff_ab_data[0] = a; |
|
2456 porterduff_ab_data[1] = b; |
|
2457 |
|
2458 porterduff_xyz_data[0] = x; |
|
2459 porterduff_xyz_data[1] = y; |
|
2460 porterduff_xyz_data[2] = z; |
|
2461 } |
|
2462 |
|
2463 |
|
2464 void QOpenGLPaintEngine::updateCompositionMode(QPainter::CompositionMode composition_mode) |
|
2465 { |
|
2466 Q_D(QOpenGLPaintEngine); |
|
2467 |
|
2468 if (!d->use_fragment_programs && composition_mode > QPainter::CompositionMode_Plus) |
|
2469 composition_mode = QPainter::CompositionMode_SourceOver; |
|
2470 |
|
2471 d->composition_mode = composition_mode; |
|
2472 |
|
2473 d->has_fast_composition_mode = (!d->high_quality_antialiasing && composition_mode <= QPainter::CompositionMode_Plus) |
|
2474 || composition_mode == QPainter::CompositionMode_SourceOver |
|
2475 || composition_mode == QPainter::CompositionMode_Destination |
|
2476 || composition_mode == QPainter::CompositionMode_DestinationOver |
|
2477 || composition_mode == QPainter::CompositionMode_DestinationOut |
|
2478 || composition_mode == QPainter::CompositionMode_SourceAtop |
|
2479 || composition_mode == QPainter::CompositionMode_Xor |
|
2480 || composition_mode == QPainter::CompositionMode_Plus; |
|
2481 |
|
2482 if (d->has_fast_composition_mode) |
|
2483 d->fragment_composition_mode = d->high_quality_antialiasing ? COMPOSITION_MODE_BLEND_MODE_MASK : COMPOSITION_MODE_BLEND_MODE_NOMASK; |
|
2484 else if (composition_mode <= QPainter::CompositionMode_Plus) |
|
2485 d->fragment_composition_mode = d->high_quality_antialiasing ? COMPOSITION_MODES_SIMPLE_PORTER_DUFF : COMPOSITION_MODES_SIMPLE_PORTER_DUFF_NOMASK; |
|
2486 else |
|
2487 switch (composition_mode) { |
|
2488 case QPainter::CompositionMode_Multiply: |
|
2489 d->fragment_composition_mode = d->high_quality_antialiasing ? COMPOSITION_MODES_MULTIPLY : COMPOSITION_MODES_MULTIPLY_NOMASK; |
|
2490 break; |
|
2491 case QPainter::CompositionMode_Screen: |
|
2492 d->fragment_composition_mode = d->high_quality_antialiasing ? COMPOSITION_MODES_SCREEN : COMPOSITION_MODES_SCREEN_NOMASK; |
|
2493 break; |
|
2494 case QPainter::CompositionMode_Overlay: |
|
2495 d->fragment_composition_mode = d->high_quality_antialiasing ? COMPOSITION_MODES_OVERLAY : COMPOSITION_MODES_OVERLAY_NOMASK; |
|
2496 break; |
|
2497 case QPainter::CompositionMode_Darken: |
|
2498 d->fragment_composition_mode = d->high_quality_antialiasing ? COMPOSITION_MODES_DARKEN : COMPOSITION_MODES_DARKEN_NOMASK; |
|
2499 break; |
|
2500 case QPainter::CompositionMode_Lighten: |
|
2501 d->fragment_composition_mode = d->high_quality_antialiasing ? COMPOSITION_MODES_LIGHTEN : COMPOSITION_MODES_LIGHTEN_NOMASK; |
|
2502 break; |
|
2503 case QPainter::CompositionMode_ColorDodge: |
|
2504 d->fragment_composition_mode = d->high_quality_antialiasing ? COMPOSITION_MODES_COLORDODGE : COMPOSITION_MODES_COLORDODGE_NOMASK; |
|
2505 break; |
|
2506 case QPainter::CompositionMode_ColorBurn: |
|
2507 d->fragment_composition_mode = d->high_quality_antialiasing ? COMPOSITION_MODES_COLORBURN : COMPOSITION_MODES_COLORBURN_NOMASK; |
|
2508 break; |
|
2509 case QPainter::CompositionMode_HardLight: |
|
2510 d->fragment_composition_mode = d->high_quality_antialiasing ? COMPOSITION_MODES_HARDLIGHT : COMPOSITION_MODES_HARDLIGHT_NOMASK; |
|
2511 break; |
|
2512 case QPainter::CompositionMode_SoftLight: |
|
2513 d->fragment_composition_mode = d->high_quality_antialiasing ? COMPOSITION_MODES_SOFTLIGHT : COMPOSITION_MODES_SOFTLIGHT_NOMASK; |
|
2514 break; |
|
2515 case QPainter::CompositionMode_Difference: |
|
2516 d->fragment_composition_mode = d->high_quality_antialiasing ? COMPOSITION_MODES_DIFFERENCE : COMPOSITION_MODES_DIFFERENCE_NOMASK; |
|
2517 break; |
|
2518 case QPainter::CompositionMode_Exclusion: |
|
2519 d->fragment_composition_mode = d->high_quality_antialiasing ? COMPOSITION_MODES_EXCLUSION : COMPOSITION_MODES_EXCLUSION_NOMASK; |
|
2520 break; |
|
2521 default: |
|
2522 Q_ASSERT(false); |
|
2523 } |
|
2524 |
|
2525 switch(composition_mode) { |
|
2526 case QPainter::CompositionMode_DestinationOver: |
|
2527 glBlendFunc(GL_ONE_MINUS_DST_ALPHA, GL_ONE); |
|
2528 d->setPorterDuffData(0, 1, 1, 1, 1); |
|
2529 break; |
|
2530 case QPainter::CompositionMode_Clear: |
|
2531 glBlendFunc(GL_ZERO, GL_ZERO); |
|
2532 d->setPorterDuffData(0, 0, 0, 0, 0); |
|
2533 break; |
|
2534 case QPainter::CompositionMode_Source: |
|
2535 glBlendFunc(GL_ONE, GL_ZERO); |
|
2536 d->setPorterDuffData(1, 0, 1, 1, 0); |
|
2537 break; |
|
2538 case QPainter::CompositionMode_Destination: |
|
2539 glBlendFunc(GL_ZERO, GL_ONE); |
|
2540 d->setPorterDuffData(0, 1, 1, 0, 1); |
|
2541 break; |
|
2542 case QPainter::CompositionMode_SourceIn: |
|
2543 glBlendFunc(GL_DST_ALPHA, GL_ZERO); |
|
2544 d->setPorterDuffData(1, 0, 1, 0, 0); |
|
2545 break; |
|
2546 case QPainter::CompositionMode_DestinationIn: |
|
2547 glBlendFunc(GL_ZERO, GL_SRC_ALPHA); |
|
2548 d->setPorterDuffData(0, 1, 1, 0, 0); |
|
2549 break; |
|
2550 case QPainter::CompositionMode_SourceOut: |
|
2551 glBlendFunc(GL_ONE_MINUS_DST_ALPHA, GL_ZERO); |
|
2552 d->setPorterDuffData(0, 0, 0, 1, 0); |
|
2553 break; |
|
2554 case QPainter::CompositionMode_DestinationOut: |
|
2555 glBlendFunc(GL_ZERO, GL_ONE_MINUS_SRC_ALPHA); |
|
2556 d->setPorterDuffData(0, 0, 0, 0, 1); |
|
2557 break; |
|
2558 case QPainter::CompositionMode_SourceAtop: |
|
2559 glBlendFunc(GL_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA); |
|
2560 d->setPorterDuffData(1, 0, 1, 0, 1); |
|
2561 break; |
|
2562 case QPainter::CompositionMode_DestinationAtop: |
|
2563 glBlendFunc(GL_ONE_MINUS_DST_ALPHA, GL_SRC_ALPHA); |
|
2564 d->setPorterDuffData(0, 1, 1, 1, 0); |
|
2565 break; |
|
2566 case QPainter::CompositionMode_Xor: |
|
2567 glBlendFunc(GL_ONE_MINUS_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA); |
|
2568 d->setPorterDuffData(0, 0, 0, 1, 1); |
|
2569 break; |
|
2570 case QPainter::CompositionMode_SourceOver: |
|
2571 glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA); |
|
2572 d->setPorterDuffData(1, 0, 1, 1, 1); |
|
2573 break; |
|
2574 case QPainter::CompositionMode_Plus: |
|
2575 glBlendFunc(GL_ONE, GL_ONE); |
|
2576 d->setPorterDuffData(1, 1, 1, 1, 1); |
|
2577 break; |
|
2578 default: |
|
2579 break; |
|
2580 } |
|
2581 } |
|
2582 |
|
2583 class QGLMaskGenerator |
|
2584 { |
|
2585 public: |
|
2586 QGLMaskGenerator(const QPainterPath &path, const QTransform &matrix, qreal stroke_width = -1) |
|
2587 : p(path), |
|
2588 m(matrix), |
|
2589 w(stroke_width) |
|
2590 { |
|
2591 } |
|
2592 |
|
2593 virtual QRect screenRect() = 0; |
|
2594 virtual void drawMask(const QRect &rect) = 0; |
|
2595 |
|
2596 QPainterPath path() const { return p; } |
|
2597 QTransform matrix() const { return m; } |
|
2598 qreal strokeWidth() const { return w; } |
|
2599 |
|
2600 virtual ~QGLMaskGenerator() {} |
|
2601 |
|
2602 private: |
|
2603 QPainterPath p; |
|
2604 QTransform m; |
|
2605 qreal w; |
|
2606 }; |
|
2607 |
|
2608 void QGLMaskTextureCache::setOffscreenSize(const QSize &sz) |
|
2609 { |
|
2610 Q_ASSERT(sz.width() == sz.height()); |
|
2611 |
|
2612 if (offscreenSize != sz) { |
|
2613 offscreenSize = sz; |
|
2614 clearCache(); |
|
2615 } |
|
2616 } |
|
2617 |
|
2618 void QGLMaskTextureCache::clearCache() |
|
2619 { |
|
2620 cache.clear(); |
|
2621 |
|
2622 int quad_tree_size = 1; |
|
2623 |
|
2624 for (int i = block_size; i < offscreenSize.width(); i *= 2) |
|
2625 quad_tree_size += quad_tree_size * 4; |
|
2626 |
|
2627 for (int i = 0; i < 4; ++i) { |
|
2628 occupied_quadtree[i].resize(quad_tree_size); |
|
2629 |
|
2630 occupied_quadtree[i][0].key = 0; |
|
2631 occupied_quadtree[i][0].largest_available_block = offscreenSize.width(); |
|
2632 occupied_quadtree[i][0].largest_used_block = 0; |
|
2633 |
|
2634 DEBUG_ONCE qDebug() << "QGLMaskTextureCache:: created quad tree of size" << quad_tree_size; |
|
2635 } |
|
2636 } |
|
2637 |
|
2638 void QGLMaskTextureCache::setDrawableSize(const QSize &sz) |
|
2639 { |
|
2640 drawableSize = sz; |
|
2641 } |
|
2642 |
|
2643 void QGLMaskTextureCache::maintainCache() |
|
2644 { |
|
2645 QGLTextureCacheHash::iterator it = cache.begin(); |
|
2646 QGLTextureCacheHash::iterator end = cache.end(); |
|
2647 |
|
2648 while (it != end) { |
|
2649 CacheInfo &cache_info = it.value(); |
|
2650 ++cache_info.age; |
|
2651 |
|
2652 if (cache_info.age > 1) { |
|
2653 quadtreeInsert(cache_info.loc.channel, 0, cache_info.loc.rect); |
|
2654 it = cache.erase(it); |
|
2655 } else { |
|
2656 ++it; |
|
2657 } |
|
2658 } |
|
2659 } |
|
2660 |
|
2661 //#define DISABLE_MASK_CACHE |
|
2662 |
|
2663 QGLMaskTextureCache::CacheLocation QGLMaskTextureCache::getMask(QGLMaskGenerator &maskGenerator, QOpenGLPaintEnginePrivate *e) |
|
2664 { |
|
2665 #ifndef DISABLE_MASK_CACHE |
|
2666 engine = e; |
|
2667 |
|
2668 quint64 key = hash(maskGenerator.path(), maskGenerator.matrix(), maskGenerator.strokeWidth()); |
|
2669 |
|
2670 if (key == 0) |
|
2671 key = 1; |
|
2672 |
|
2673 CacheInfo info(maskGenerator.path(), maskGenerator.matrix(), maskGenerator.strokeWidth()); |
|
2674 |
|
2675 QGLTextureCacheHash::iterator it = cache.find(key); |
|
2676 |
|
2677 while (it != cache.end() && it.key() == key) { |
|
2678 CacheInfo &cache_info = it.value(); |
|
2679 if (info.stroke_width == cache_info.stroke_width && info.matrix == cache_info.matrix && info.path == cache_info.path) { |
|
2680 DEBUG_ONCE_STR("QGLMaskTextureCache::getMask(): Using cached mask"); |
|
2681 |
|
2682 cache_info.age = 0; |
|
2683 return cache_info.loc; |
|
2684 } |
|
2685 ++it; |
|
2686 } |
|
2687 |
|
2688 // mask was not found, create new mask |
|
2689 |
|
2690 DEBUG_ONCE_STR("QGLMaskTextureCache::getMask(): Creating new mask..."); |
|
2691 |
|
2692 createMask(key, info, maskGenerator); |
|
2693 |
|
2694 cache.insert(key, info); |
|
2695 |
|
2696 return info.loc; |
|
2697 #else |
|
2698 CacheInfo info(maskGenerator.path(), maskGenerator.matrix()); |
|
2699 createMask(0, info, maskGenerator); |
|
2700 return info.loc; |
|
2701 #endif |
|
2702 } |
|
2703 |
|
2704 #ifndef FloatToQuint64 |
|
2705 #define FloatToQuint64(i) (quint64)((i) * 32) |
|
2706 #endif |
|
2707 |
|
2708 quint64 QGLMaskTextureCache::hash(const QPainterPath &p, const QTransform &m, qreal w) |
|
2709 { |
|
2710 Q_ASSERT(sizeof(quint64) == 8); |
|
2711 |
|
2712 quint64 h = 0; |
|
2713 |
|
2714 for (int i = 0; i < p.elementCount(); ++i) { |
|
2715 h += FloatToQuint64(p.elementAt(i).x) << 32; |
|
2716 h += FloatToQuint64(p.elementAt(i).y); |
|
2717 h += p.elementAt(i).type; |
|
2718 } |
|
2719 |
|
2720 h += FloatToQuint64(m.m11()); |
|
2721 #ifndef Q_OS_WINCE // ### |
|
2722 //Compiler crashes for arm on WinCE |
|
2723 h += FloatToQuint64(m.m12()) << 4; |
|
2724 h += FloatToQuint64(m.m13()) << 8; |
|
2725 h += FloatToQuint64(m.m21()) << 12; |
|
2726 h += FloatToQuint64(m.m22()) << 16; |
|
2727 h += FloatToQuint64(m.m23()) << 20; |
|
2728 h += FloatToQuint64(m.m31()) << 24; |
|
2729 h += FloatToQuint64(m.m32()) << 28; |
|
2730 #endif |
|
2731 h += FloatToQuint64(m.m33()) << 32; |
|
2732 |
|
2733 h += FloatToQuint64(w); |
|
2734 |
|
2735 return h; |
|
2736 } |
|
2737 |
|
2738 void QGLMaskTextureCache::createMask(quint64 key, CacheInfo &info, QGLMaskGenerator &maskGenerator) |
|
2739 { |
|
2740 info.loc.screen_rect = maskGenerator.screenRect(); |
|
2741 |
|
2742 if (info.loc.screen_rect.isEmpty()) { |
|
2743 info.loc.channel = 0; |
|
2744 info.loc.rect = QRect(); |
|
2745 return; |
|
2746 } |
|
2747 |
|
2748 quadtreeAllocate(key, info.loc.screen_rect.size(), &info.loc.rect, &info.loc.channel); |
|
2749 |
|
2750 int ch = info.loc.channel; |
|
2751 glColorMask(ch == 0, ch == 1, ch == 2, ch == 3); |
|
2752 |
|
2753 maskGenerator.drawMask(info.loc.rect); |
|
2754 |
|
2755 glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE); |
|
2756 } |
|
2757 |
|
2758 int QGLMaskTextureCache::quadtreeBlocksize(int node) |
|
2759 { |
|
2760 DEBUG_ONCE qDebug() << "Offscreen size:" << offscreenSize.width(); |
|
2761 |
|
2762 int blocksize = offscreenSize.width(); |
|
2763 |
|
2764 while (node) { |
|
2765 node = (node - 1) / 4; |
|
2766 blocksize /= 2; |
|
2767 } |
|
2768 |
|
2769 return blocksize; |
|
2770 } |
|
2771 |
|
2772 QPoint QGLMaskTextureCache::quadtreeLocation(int node) |
|
2773 { |
|
2774 QPoint location; |
|
2775 int blocksize = quadtreeBlocksize(node); |
|
2776 |
|
2777 while (node) { |
|
2778 --node; |
|
2779 |
|
2780 if (node & 1) |
|
2781 location.setX(location.x() + blocksize); |
|
2782 |
|
2783 if (node & 2) |
|
2784 location.setY(location.y() + blocksize); |
|
2785 |
|
2786 node /= 4; |
|
2787 blocksize *= 2; |
|
2788 } |
|
2789 |
|
2790 return location; |
|
2791 } |
|
2792 |
|
2793 void QGLMaskTextureCache::quadtreeUpdate(int channel, int node, int current_block_size) |
|
2794 { |
|
2795 while (node) { |
|
2796 node = (node - 1) / 4; |
|
2797 |
|
2798 int first_child = node * 4 + 1; |
|
2799 |
|
2800 int largest_available = 0; |
|
2801 int largest_used = 0; |
|
2802 |
|
2803 bool all_empty = true; |
|
2804 |
|
2805 for (int i = 0; i < 4; ++i) { |
|
2806 largest_available = qMax(largest_available, occupied_quadtree[channel][first_child + i].largest_available_block); |
|
2807 largest_used = qMax(largest_used, occupied_quadtree[channel][first_child + i].largest_used_block); |
|
2808 |
|
2809 if (occupied_quadtree[channel][first_child + i].largest_available_block < current_block_size) |
|
2810 all_empty = false; |
|
2811 } |
|
2812 |
|
2813 current_block_size *= 2; |
|
2814 |
|
2815 if (all_empty) { |
|
2816 occupied_quadtree[channel][node].largest_available_block = current_block_size; |
|
2817 occupied_quadtree[channel][node].largest_used_block = 0; |
|
2818 } else { |
|
2819 occupied_quadtree[channel][node].largest_available_block = largest_available; |
|
2820 occupied_quadtree[channel][node].largest_used_block = largest_used; |
|
2821 } |
|
2822 } |
|
2823 } |
|
2824 |
|
2825 void QGLMaskTextureCache::quadtreeInsert(int channel, quint64 key, const QRect &rect, int node) |
|
2826 { |
|
2827 int current_block_size = quadtreeBlocksize(node); |
|
2828 QPoint location = quadtreeLocation(node); |
|
2829 QRect relative = rect.translated(-location); |
|
2830 |
|
2831 if (relative.left() >= current_block_size || relative.top() >= current_block_size |
|
2832 || relative.right() < 0 || relative.bottom() < 0) |
|
2833 return; |
|
2834 |
|
2835 if (current_block_size == block_size // no more refining possible |
|
2836 || (relative.top() < block_size && relative.bottom() >= (current_block_size - block_size) |
|
2837 && relative.left() < block_size && relative.right() >= (current_block_size - block_size))) |
|
2838 { |
|
2839 if (key != 0) { |
|
2840 occupied_quadtree[channel][node].largest_available_block = 0; |
|
2841 occupied_quadtree[channel][node].largest_used_block = rect.width() * rect.height(); |
|
2842 } else { |
|
2843 occupied_quadtree[channel][node].largest_available_block = current_block_size; |
|
2844 occupied_quadtree[channel][node].largest_used_block = 0; |
|
2845 } |
|
2846 |
|
2847 occupied_quadtree[channel][node].key = key; |
|
2848 |
|
2849 quadtreeUpdate(channel, node, current_block_size); |
|
2850 } else { |
|
2851 if (key && occupied_quadtree[channel][node].largest_available_block == current_block_size) { |
|
2852 // refining the quad tree, initialize child nodes |
|
2853 int half_block_size = current_block_size / 2; |
|
2854 |
|
2855 int temp = node * 4 + 1; |
|
2856 for (int sibling = 0; sibling < 4; ++sibling) { |
|
2857 occupied_quadtree[channel][temp + sibling].largest_available_block = half_block_size; |
|
2858 occupied_quadtree[channel][temp + sibling].largest_used_block = 0; |
|
2859 occupied_quadtree[channel][temp + sibling].key = 0; |
|
2860 } |
|
2861 } |
|
2862 |
|
2863 node = node * 4 + 1; |
|
2864 |
|
2865 for (int sibling = 0; sibling < 4; ++sibling) |
|
2866 quadtreeInsert(channel, key, rect, node + sibling); |
|
2867 } |
|
2868 } |
|
2869 |
|
2870 void QGLMaskTextureCache::quadtreeClear(int channel, const QRect &rect, int node) |
|
2871 { |
|
2872 const quint64 &key = occupied_quadtree[channel][node].key; |
|
2873 |
|
2874 int current_block_size = quadtreeBlocksize(node); |
|
2875 QPoint location = quadtreeLocation(node); |
|
2876 |
|
2877 QRect relative = rect.translated(-location); |
|
2878 |
|
2879 if (relative.left() >= current_block_size || relative.top() >= current_block_size |
|
2880 || relative.right() < 0 || relative.bottom() < 0) |
|
2881 return; |
|
2882 |
|
2883 if (key != 0) { |
|
2884 QGLTextureCacheHash::iterator it = cache.find(key); |
|
2885 |
|
2886 Q_ASSERT(it != cache.end()); |
|
2887 |
|
2888 while (it != cache.end() && it.key() == key) { |
|
2889 const CacheInfo &cache_info = it.value(); |
|
2890 |
|
2891 if (cache_info.loc.channel == channel |
|
2892 && cache_info.loc.rect.left() <= location.x() |
|
2893 && cache_info.loc.rect.top() <= location.y() |
|
2894 && cache_info.loc.rect.right() >= location.x() |
|
2895 && cache_info.loc.rect.bottom() >= location.y()) |
|
2896 { |
|
2897 quadtreeInsert(channel, 0, cache_info.loc.rect); |
|
2898 engine->cacheItemErased(channel, cache_info.loc.rect); |
|
2899 cache.erase(it); |
|
2900 goto found; |
|
2901 } else { |
|
2902 ++it; |
|
2903 } |
|
2904 } |
|
2905 |
|
2906 // if we don't find the key there's an error in the quadtree |
|
2907 Q_ASSERT(false); |
|
2908 found: |
|
2909 Q_ASSERT(occupied_quadtree[channel][node].key == 0); |
|
2910 } else if (occupied_quadtree[channel][node].largest_available_block < current_block_size) { |
|
2911 Q_ASSERT(current_block_size >= block_size); |
|
2912 |
|
2913 node = node * 4 + 1; |
|
2914 |
|
2915 for (int sibling = 0; sibling < 4; ++sibling) |
|
2916 quadtreeClear(channel, rect, node + sibling); |
|
2917 } |
|
2918 } |
|
2919 |
|
2920 bool QGLMaskTextureCache::quadtreeFindAvailableLocation(const QSize &size, QRect *rect, int *channel) |
|
2921 { |
|
2922 int needed_block_size = qMax(1, qMax(size.width(), size.height())); |
|
2923 |
|
2924 for (int i = 0; i < 4; ++i) { |
|
2925 int current_block_size = offscreenSize.width(); |
|
2926 |
|
2927 if (occupied_quadtree[i][0].largest_available_block >= needed_block_size) { |
|
2928 int node = 0; |
|
2929 |
|
2930 while (current_block_size != occupied_quadtree[i][node].largest_available_block) { |
|
2931 Q_ASSERT(current_block_size > block_size); |
|
2932 Q_ASSERT(current_block_size > occupied_quadtree[i][node].largest_available_block); |
|
2933 |
|
2934 node = node * 4 + 1; |
|
2935 current_block_size /= 2; |
|
2936 |
|
2937 int sibling = 0; |
|
2938 |
|
2939 while (occupied_quadtree[i][node + sibling].largest_available_block < needed_block_size) |
|
2940 ++sibling; |
|
2941 |
|
2942 Q_ASSERT(sibling < 4); |
|
2943 node += sibling; |
|
2944 } |
|
2945 |
|
2946 *channel = i; |
|
2947 *rect = QRect(quadtreeLocation(node), size); |
|
2948 |
|
2949 return true; |
|
2950 } |
|
2951 } |
|
2952 |
|
2953 return false; |
|
2954 } |
|
2955 |
|
2956 void QGLMaskTextureCache::quadtreeFindExistingLocation(const QSize &size, QRect *rect, int *channel) |
|
2957 { |
|
2958 // try to pick small masks to throw out, as large masks are more expensive to recompute |
|
2959 *channel = qrand() % 4; |
|
2960 for (int i = 0; i < 4; ++i) |
|
2961 if (occupied_quadtree[i][0].largest_used_block < occupied_quadtree[*channel][0].largest_used_block) |
|
2962 *channel = i; |
|
2963 |
|
2964 int needed_block_size = qt_next_power_of_two(qMax(1, qMax(size.width(), size.height()))); |
|
2965 |
|
2966 int node = 0; |
|
2967 int current_block_size = offscreenSize.width(); |
|
2968 |
|
2969 while (current_block_size > block_size |
|
2970 && current_block_size >= needed_block_size * 2 |
|
2971 && occupied_quadtree[*channel][node].key == 0) |
|
2972 { |
|
2973 node = node * 4 + 1; |
|
2974 |
|
2975 int sibling = 0; |
|
2976 |
|
2977 for (int i = 1; i < 4; ++i) { |
|
2978 if (occupied_quadtree[*channel][node + i].largest_used_block |
|
2979 <= occupied_quadtree[*channel][node + sibling].largest_used_block) |
|
2980 { |
|
2981 sibling = i; |
|
2982 } |
|
2983 } |
|
2984 |
|
2985 node += sibling; |
|
2986 current_block_size /= 2; |
|
2987 } |
|
2988 |
|
2989 *rect = QRect(quadtreeLocation(node), size); |
|
2990 } |
|
2991 |
|
2992 void QGLMaskTextureCache::quadtreeAllocate(quint64 key, const QSize &size, QRect *rect, int *channel) |
|
2993 { |
|
2994 #ifndef DISABLE_MASK_CACHE |
|
2995 if (!quadtreeFindAvailableLocation(size, rect, channel)) { |
|
2996 quadtreeFindExistingLocation(size, rect, channel); |
|
2997 quadtreeClear(*channel, *rect); |
|
2998 } |
|
2999 |
|
3000 quadtreeInsert(*channel, key, *rect); |
|
3001 #else |
|
3002 *channel = 0; |
|
3003 *rect = QRect(QPoint(), size); |
|
3004 #endif |
|
3005 } |
|
3006 |
|
3007 class QGLTrapezoidMaskGenerator : public QGLMaskGenerator |
|
3008 { |
|
3009 public: |
|
3010 QGLTrapezoidMaskGenerator(const QPainterPath &path, const QTransform &matrix, QGLOffscreen &offscreen, GLuint maskFragmentProgram, qreal strokeWidth = -1.0); |
|
3011 |
|
3012 QRect screenRect(); |
|
3013 void drawMask(const QRect &rect); |
|
3014 |
|
3015 private: |
|
3016 QRect screen_rect; |
|
3017 bool has_screen_rect; |
|
3018 |
|
3019 QGLOffscreen *offscreen; |
|
3020 |
|
3021 GLuint maskFragmentProgram; |
|
3022 |
|
3023 virtual QVector<QGLTrapezoid> generateTrapezoids() = 0; |
|
3024 virtual QRect computeScreenRect() = 0; |
|
3025 }; |
|
3026 |
|
3027 class QGLPathMaskGenerator : public QGLTrapezoidMaskGenerator |
|
3028 { |
|
3029 public: |
|
3030 QGLPathMaskGenerator(const QPainterPath &path, const QTransform &matrix, QGLOffscreen &offscreen, GLuint maskFragmentProgram); |
|
3031 |
|
3032 private: |
|
3033 QVector<QGLTrapezoid> generateTrapezoids(); |
|
3034 QRect computeScreenRect(); |
|
3035 |
|
3036 QPolygonF poly; |
|
3037 }; |
|
3038 |
|
3039 class QGLLineMaskGenerator : public QGLTrapezoidMaskGenerator |
|
3040 { |
|
3041 public: |
|
3042 QGLLineMaskGenerator(const QPainterPath &path, const QTransform &matrix, qreal width, QGLOffscreen &offscreen, GLuint maskFragmentProgram); |
|
3043 |
|
3044 private: |
|
3045 QVector<QGLTrapezoid> generateTrapezoids(); |
|
3046 QRect computeScreenRect(); |
|
3047 |
|
3048 QPainterPath transformedPath; |
|
3049 }; |
|
3050 |
|
3051 class QGLRectMaskGenerator : public QGLTrapezoidMaskGenerator |
|
3052 { |
|
3053 public: |
|
3054 QGLRectMaskGenerator(const QPainterPath &path, const QTransform &matrix, QGLOffscreen &offscreen, GLuint maskFragmentProgram); |
|
3055 |
|
3056 private: |
|
3057 QVector<QGLTrapezoid> generateTrapezoids(); |
|
3058 QRect computeScreenRect(); |
|
3059 |
|
3060 QPainterPath transformedPath; |
|
3061 }; |
|
3062 |
|
3063 class QGLEllipseMaskGenerator : public QGLMaskGenerator |
|
3064 { |
|
3065 public: |
|
3066 QGLEllipseMaskGenerator(const QRectF &rect, const QTransform &matrix, QGLOffscreen &offscreen, GLuint maskFragmentProgram, int *maskVariableLocations); |
|
3067 |
|
3068 QRect screenRect(); |
|
3069 void drawMask(const QRect &rect); |
|
3070 |
|
3071 private: |
|
3072 QRect screen_rect; |
|
3073 |
|
3074 QRectF ellipseRect; |
|
3075 |
|
3076 QGLOffscreen *offscreen; |
|
3077 |
|
3078 GLuint maskFragmentProgram; |
|
3079 |
|
3080 int *maskVariableLocations; |
|
3081 |
|
3082 float vertexArray[4 * 2]; |
|
3083 }; |
|
3084 |
|
3085 QGLTrapezoidMaskGenerator::QGLTrapezoidMaskGenerator(const QPainterPath &path, const QTransform &matrix, QGLOffscreen &offs, GLuint program, qreal stroke_width) |
|
3086 : QGLMaskGenerator(path, matrix, stroke_width) |
|
3087 , has_screen_rect(false) |
|
3088 , offscreen(&offs) |
|
3089 , maskFragmentProgram(program) |
|
3090 { |
|
3091 } |
|
3092 |
|
3093 extern void qt_add_rect_to_array(const QRectF &r, q_vertexType *array); |
|
3094 extern void qt_add_texcoords_to_array(qreal x1, qreal y1, qreal x2, qreal y2, q_vertexType *array); |
|
3095 |
|
3096 void QGLTrapezoidMaskGenerator::drawMask(const QRect &rect) |
|
3097 { |
|
3098 #ifdef QT_OPENGL_ES |
|
3099 Q_UNUSED(rect); |
|
3100 #else |
|
3101 glMatrixMode(GL_MODELVIEW); |
|
3102 glPushMatrix(); |
|
3103 glLoadIdentity(); |
|
3104 |
|
3105 QGLContext *ctx = offscreen->context(); |
|
3106 offscreen->bind(); |
|
3107 |
|
3108 glDisable(GL_TEXTURE_GEN_S); |
|
3109 glDisable(GL_TEXTURE_1D); |
|
3110 |
|
3111 GLfloat vertexArray[4 * 2]; |
|
3112 qt_add_rect_to_array(rect, vertexArray); |
|
3113 |
|
3114 bool needs_scissor = rect != screen_rect; |
|
3115 |
|
3116 if (needs_scissor) { |
|
3117 glEnable(GL_SCISSOR_TEST); |
|
3118 glScissor(rect.left(), offscreen->offscreenSize().height() - rect.bottom() - 1, rect.width(), rect.height()); |
|
3119 } |
|
3120 |
|
3121 QVector<QGLTrapezoid> trapezoids = generateTrapezoids(); |
|
3122 |
|
3123 // clear mask |
|
3124 glBlendFunc(GL_ZERO, GL_ZERO); // clear |
|
3125 glVertexPointer(2, q_vertexTypeEnum, 0, vertexArray); |
|
3126 glEnableClientState(GL_VERTEX_ARRAY); |
|
3127 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); |
|
3128 glDisableClientState(GL_VERTEX_ARRAY); |
|
3129 |
|
3130 glBlendFunc(GL_ONE, GL_ONE); // add mask |
|
3131 glEnable(GL_FRAGMENT_PROGRAM_ARB); |
|
3132 glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, maskFragmentProgram); |
|
3133 |
|
3134 QPoint delta = rect.topLeft() - screen_rect.topLeft(); |
|
3135 glBegin(GL_QUADS); |
|
3136 for (int i = 0; i < trapezoids.size(); ++i) |
|
3137 drawTrapezoid(trapezoids[i].translated(delta), offscreen->offscreenSize().height(), ctx); |
|
3138 glEnd(); |
|
3139 |
|
3140 if (needs_scissor) |
|
3141 glDisable(GL_SCISSOR_TEST); |
|
3142 |
|
3143 glDisable(GL_FRAGMENT_PROGRAM_ARB); |
|
3144 |
|
3145 glMatrixMode(GL_MODELVIEW); |
|
3146 glPopMatrix(); |
|
3147 #endif |
|
3148 } |
|
3149 |
|
3150 QRect QGLTrapezoidMaskGenerator::screenRect() |
|
3151 { |
|
3152 if (!has_screen_rect) { |
|
3153 screen_rect = computeScreenRect(); |
|
3154 has_screen_rect = true; |
|
3155 } |
|
3156 |
|
3157 screen_rect = screen_rect.intersected(QRect(QPoint(), offscreen->drawableSize())); |
|
3158 |
|
3159 return screen_rect; |
|
3160 } |
|
3161 |
|
3162 QGLPathMaskGenerator::QGLPathMaskGenerator(const QPainterPath &path, const QTransform &matrix, QGLOffscreen &offs, GLuint program) |
|
3163 : QGLTrapezoidMaskGenerator(path, matrix, offs, program) |
|
3164 { |
|
3165 } |
|
3166 |
|
3167 QRect QGLPathMaskGenerator::computeScreenRect() |
|
3168 { |
|
3169 poly = path().toFillPolygon(matrix()); |
|
3170 return poly.boundingRect().toAlignedRect(); |
|
3171 } |
|
3172 |
|
3173 QVector<QGLTrapezoid> QGLPathMaskGenerator::generateTrapezoids() |
|
3174 { |
|
3175 QOpenGLImmediateModeTessellator tessellator; |
|
3176 tessellator.tessellate(poly.data(), poly.count(), path().fillRule() == Qt::WindingFill); |
|
3177 return tessellator.trapezoids; |
|
3178 } |
|
3179 |
|
3180 QGLRectMaskGenerator::QGLRectMaskGenerator(const QPainterPath &path, const QTransform &matrix, QGLOffscreen &offs, GLuint program) |
|
3181 : QGLTrapezoidMaskGenerator(path, matrix, offs, program) |
|
3182 { |
|
3183 } |
|
3184 |
|
3185 QGLLineMaskGenerator::QGLLineMaskGenerator(const QPainterPath &path, const QTransform &matrix, qreal width, QGLOffscreen &offs, GLuint program) |
|
3186 : QGLTrapezoidMaskGenerator(path, matrix, offs, program, width) |
|
3187 { |
|
3188 } |
|
3189 |
|
3190 QRect QGLRectMaskGenerator::computeScreenRect() |
|
3191 { |
|
3192 transformedPath = matrix().map(path()); |
|
3193 |
|
3194 return transformedPath.controlPointRect().adjusted(-1, -1, 1, 1).toAlignedRect(); |
|
3195 } |
|
3196 |
|
3197 QRect QGLLineMaskGenerator::computeScreenRect() |
|
3198 { |
|
3199 transformedPath = matrix().map(path()); |
|
3200 |
|
3201 return transformedPath.controlPointRect().adjusted(-1, -1, 1, 1).toAlignedRect(); |
|
3202 } |
|
3203 |
|
3204 QVector<QGLTrapezoid> QGLLineMaskGenerator::generateTrapezoids() |
|
3205 { |
|
3206 QOpenGLImmediateModeTessellator tessellator; |
|
3207 QPointF last; |
|
3208 for (int i = 0; i < transformedPath.elementCount(); ++i) { |
|
3209 QPainterPath::Element element = transformedPath.elementAt(i); |
|
3210 |
|
3211 Q_ASSERT(!element.isCurveTo()); |
|
3212 |
|
3213 if (element.isLineTo()) |
|
3214 tessellator.tessellateRect(last, element, strokeWidth()); |
|
3215 |
|
3216 last = element; |
|
3217 } |
|
3218 |
|
3219 return tessellator.trapezoids; |
|
3220 } |
|
3221 |
|
3222 QVector<QGLTrapezoid> QGLRectMaskGenerator::generateTrapezoids() |
|
3223 { |
|
3224 Q_ASSERT(transformedPath.elementCount() == 5); |
|
3225 |
|
3226 QOpenGLImmediateModeTessellator tessellator; |
|
3227 if (matrix().type() <= QTransform::TxScale) { |
|
3228 QPointF a = transformedPath.elementAt(0); |
|
3229 QPointF b = transformedPath.elementAt(1); |
|
3230 QPointF c = transformedPath.elementAt(2); |
|
3231 QPointF d = transformedPath.elementAt(3); |
|
3232 |
|
3233 QPointF first = (a + d) * 0.5; |
|
3234 QPointF last = (b + c) * 0.5; |
|
3235 |
|
3236 QPointF delta = a - d; |
|
3237 |
|
3238 // manhattan distance (no rotation) |
|
3239 qreal width = qAbs(delta.x()) + qAbs(delta.y()); |
|
3240 |
|
3241 Q_ASSERT(qFuzzyIsNull(delta.x()) || qFuzzyIsNull(delta.y())); |
|
3242 |
|
3243 tessellator.tessellateRect(first, last, width); |
|
3244 } else { |
|
3245 QPointF points[5]; |
|
3246 |
|
3247 for (int i = 0; i < 5; ++i) |
|
3248 points[i] = transformedPath.elementAt(i); |
|
3249 |
|
3250 tessellator.tessellateConvex(points, 5); |
|
3251 } |
|
3252 return tessellator.trapezoids; |
|
3253 } |
|
3254 |
|
3255 static QPainterPath ellipseRectToPath(const QRectF &rect) |
|
3256 { |
|
3257 QPainterPath path; |
|
3258 path.addEllipse(rect); |
|
3259 return path; |
|
3260 } |
|
3261 |
|
3262 QGLEllipseMaskGenerator::QGLEllipseMaskGenerator(const QRectF &rect, const QTransform &matrix, QGLOffscreen &offs, GLuint program, int *locations) |
|
3263 : QGLMaskGenerator(ellipseRectToPath(rect), matrix), |
|
3264 ellipseRect(rect), |
|
3265 offscreen(&offs), |
|
3266 maskFragmentProgram(program), |
|
3267 maskVariableLocations(locations) |
|
3268 { |
|
3269 } |
|
3270 |
|
3271 QRect QGLEllipseMaskGenerator::screenRect() |
|
3272 { |
|
3273 QPointF center = ellipseRect.center(); |
|
3274 |
|
3275 QPointF points[] = { |
|
3276 QPointF(ellipseRect.left(), center.y()), |
|
3277 QPointF(ellipseRect.right(), center.y()), |
|
3278 QPointF(center.x(), ellipseRect.top()), |
|
3279 QPointF(center.x(), ellipseRect.bottom()) |
|
3280 }; |
|
3281 |
|
3282 qreal min_screen_delta_len = QREAL_MAX; |
|
3283 |
|
3284 for (int i = 0; i < 4; ++i) { |
|
3285 QPointF delta = points[i] - center; |
|
3286 |
|
3287 // normalize |
|
3288 delta /= qSqrt(delta.x() * delta.x() + delta.y() * delta.y()); |
|
3289 |
|
3290 QPointF screen_delta(matrix().m11() * delta.x() + matrix().m21() * delta.y(), |
|
3291 matrix().m12() * delta.x() + matrix().m22() * delta.y()); |
|
3292 |
|
3293 min_screen_delta_len = qMin(min_screen_delta_len, |
|
3294 qreal(qSqrt(screen_delta.x() * screen_delta.x() + screen_delta.y() * screen_delta.y()))); |
|
3295 } |
|
3296 |
|
3297 const qreal padding = 2.0f; |
|
3298 |
|
3299 qreal grow = padding / min_screen_delta_len; |
|
3300 |
|
3301 QRectF boundingRect = ellipseRect.adjusted(-grow, -grow, grow, grow); |
|
3302 |
|
3303 boundingRect = matrix().mapRect(boundingRect); |
|
3304 |
|
3305 QPointF p(0.5, 0.5); |
|
3306 |
|
3307 screen_rect = QRect((boundingRect.topLeft() - p).toPoint(), |
|
3308 (boundingRect.bottomRight() + p).toPoint()); |
|
3309 |
|
3310 return screen_rect; |
|
3311 } |
|
3312 |
|
3313 void QGLEllipseMaskGenerator::drawMask(const QRect &rect) |
|
3314 { |
|
3315 #ifdef QT_OPENGL_ES |
|
3316 Q_UNUSED(rect); |
|
3317 #else |
|
3318 QGLContext *ctx = offscreen->context(); |
|
3319 offscreen->bind(); |
|
3320 |
|
3321 glDisable(GL_TEXTURE_GEN_S); |
|
3322 glDisable(GL_TEXTURE_1D); |
|
3323 |
|
3324 // fragment program needs the inverse radii of the ellipse |
|
3325 glTexCoord2f(1.0f / (ellipseRect.width() * 0.5f), |
|
3326 1.0f / (ellipseRect.height() * 0.5f)); |
|
3327 |
|
3328 QTransform translate(1, 0, 0, 1, -ellipseRect.center().x(), -ellipseRect.center().y()); |
|
3329 QTransform gl_to_qt(1, 0, 0, -1, 0, offscreen->drawableSize().height()); |
|
3330 QTransform inv_matrix = gl_to_qt * matrix().inverted() * translate; |
|
3331 |
|
3332 float m[3][4] = { { inv_matrix.m11(), inv_matrix.m12(), inv_matrix.m13() }, |
|
3333 { inv_matrix.m21(), inv_matrix.m22(), inv_matrix.m23() }, |
|
3334 { inv_matrix.m31(), inv_matrix.m32(), inv_matrix.m33() } }; |
|
3335 |
|
3336 QPoint offs(screen_rect.left() - rect.left(), (offscreen->drawableSize().height() - screen_rect.top()) |
|
3337 - (offscreen->offscreenSize().height() - rect.top())); |
|
3338 |
|
3339 // last component needs to be 1.0f to avoid Nvidia bug on linux |
|
3340 float ellipse_offset[4] = { offs.x(), offs.y(), 0.0f, 1.0f }; |
|
3341 |
|
3342 GLfloat vertexArray[4 * 2]; |
|
3343 qt_add_rect_to_array(rect, vertexArray); |
|
3344 |
|
3345 glBlendFunc(GL_ONE, GL_ZERO); // set mask |
|
3346 glEnable(GL_FRAGMENT_PROGRAM_ARB); |
|
3347 glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, maskFragmentProgram); |
|
3348 |
|
3349 glProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, maskVariableLocations[VAR_INV_MATRIX_M0], m[0]); |
|
3350 glProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, maskVariableLocations[VAR_INV_MATRIX_M1], m[1]); |
|
3351 glProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, maskVariableLocations[VAR_INV_MATRIX_M2], m[2]); |
|
3352 |
|
3353 glProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, maskVariableLocations[VAR_ELLIPSE_OFFSET], ellipse_offset); |
|
3354 |
|
3355 glEnableClientState(GL_VERTEX_ARRAY); |
|
3356 glVertexPointer(2, q_vertexTypeEnum, 0, vertexArray); |
|
3357 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); |
|
3358 glDisableClientState(GL_VERTEX_ARRAY); |
|
3359 glDisable(GL_FRAGMENT_PROGRAM_ARB); |
|
3360 #endif |
|
3361 } |
|
3362 |
|
3363 void QOpenGLPaintEnginePrivate::drawOffscreenPath(const QPainterPath &path) |
|
3364 { |
|
3365 #ifdef Q_WS_QWS |
|
3366 Q_UNUSED(path); |
|
3367 #else |
|
3368 DEBUG_ONCE_STR("QOpenGLPaintEnginePrivate::drawOffscreenPath()"); |
|
3369 |
|
3370 disableClipping(); |
|
3371 |
|
3372 GLuint program = qt_gl_program_cache()->getProgram(device->context(), |
|
3373 FRAGMENT_PROGRAM_MASK_TRAPEZOID_AA, 0, true); |
|
3374 QGLPathMaskGenerator maskGenerator(path, matrix, offscreen, program); |
|
3375 addItem(qt_mask_texture_cache()->getMask(maskGenerator, this)); |
|
3376 |
|
3377 enableClipping(); |
|
3378 #endif |
|
3379 } |
|
3380 |
|
3381 void QOpenGLPaintEnginePrivate::drawFastRect(const QRectF &r) |
|
3382 { |
|
3383 Q_Q(QOpenGLPaintEngine); |
|
3384 DEBUG_ONCE_STR("QOpenGLPaintEngine::drawRects(): drawing fast rect"); |
|
3385 |
|
3386 q_vertexType vertexArray[10]; |
|
3387 qt_add_rect_to_array(r, vertexArray); |
|
3388 |
|
3389 if (has_pen) |
|
3390 QOpenGLCoordinateOffset::enableOffset(this); |
|
3391 |
|
3392 if (has_brush) { |
|
3393 flushDrawQueue(); |
|
3394 |
|
3395 bool temp = high_quality_antialiasing; |
|
3396 high_quality_antialiasing = false; |
|
3397 |
|
3398 q->updateCompositionMode(composition_mode); |
|
3399 |
|
3400 setGradientOps(cbrush, r); |
|
3401 |
|
3402 bool fast_style = current_style == Qt::LinearGradientPattern |
|
3403 || current_style == Qt::SolidPattern; |
|
3404 |
|
3405 if (fast_style && has_fast_composition_mode) { |
|
3406 glEnableClientState(GL_VERTEX_ARRAY); |
|
3407 glVertexPointer(2, q_vertexTypeEnum, 0, vertexArray); |
|
3408 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); |
|
3409 glDisableClientState(GL_VERTEX_ARRAY); |
|
3410 } else { |
|
3411 composite(r); |
|
3412 } |
|
3413 |
|
3414 high_quality_antialiasing = temp; |
|
3415 |
|
3416 q->updateCompositionMode(composition_mode); |
|
3417 } |
|
3418 |
|
3419 if (has_pen) { |
|
3420 if (has_fast_pen && !high_quality_antialiasing) { |
|
3421 setGradientOps(cpen.brush(), r); |
|
3422 |
|
3423 vertexArray[8] = vertexArray[0]; |
|
3424 vertexArray[9] = vertexArray[1]; |
|
3425 |
|
3426 glVertexPointer(2, q_vertexTypeEnum, 0, vertexArray); |
|
3427 glEnableClientState(GL_VERTEX_ARRAY); |
|
3428 glDrawArrays(GL_LINE_STRIP, 0, 5); |
|
3429 glDisableClientState(GL_VERTEX_ARRAY); |
|
3430 } else { |
|
3431 QPainterPath path; |
|
3432 path.setFillRule(Qt::WindingFill); |
|
3433 |
|
3434 qreal left = r.left(); |
|
3435 qreal right = r.right(); |
|
3436 qreal top = r.top(); |
|
3437 qreal bottom = r.bottom(); |
|
3438 |
|
3439 path.moveTo(left, top); |
|
3440 path.lineTo(right, top); |
|
3441 path.lineTo(right, bottom); |
|
3442 path.lineTo(left, bottom); |
|
3443 path.lineTo(left, top); |
|
3444 |
|
3445 strokePath(path, false); |
|
3446 } |
|
3447 |
|
3448 QOpenGLCoordinateOffset::disableOffset(this); |
|
3449 } |
|
3450 } |
|
3451 |
|
3452 bool QOpenGLPaintEnginePrivate::isFastRect(const QRectF &rect) |
|
3453 { |
|
3454 if (matrix.type() < QTransform::TxRotate) { |
|
3455 QRectF r = matrix.mapRect(rect); |
|
3456 return r.topLeft().toPoint() == r.topLeft() |
|
3457 && r.bottomRight().toPoint() == r.bottomRight(); |
|
3458 } |
|
3459 |
|
3460 return false; |
|
3461 } |
|
3462 |
|
3463 void QOpenGLPaintEngine::drawRects(const QRect *rects, int rectCount) |
|
3464 { |
|
3465 struct RectF { |
|
3466 qreal x; |
|
3467 qreal y; |
|
3468 qreal w; |
|
3469 qreal h; |
|
3470 }; |
|
3471 Q_ASSERT(sizeof(RectF) == sizeof(QRectF)); |
|
3472 RectF fr[256]; |
|
3473 while (rectCount) { |
|
3474 int i = 0; |
|
3475 while (i < rectCount && i < 256) { |
|
3476 fr[i].x = rects[i].x(); |
|
3477 fr[i].y = rects[i].y(); |
|
3478 fr[i].w = rects[i].width(); |
|
3479 fr[i].h = rects[i].height(); |
|
3480 ++i; |
|
3481 } |
|
3482 drawRects((QRectF *)(void *)fr, i); |
|
3483 rects += i; |
|
3484 rectCount -= i; |
|
3485 } |
|
3486 } |
|
3487 |
|
3488 void QOpenGLPaintEngine::drawRects(const QRectF *rects, int rectCount) |
|
3489 { |
|
3490 Q_D(QOpenGLPaintEngine); |
|
3491 |
|
3492 if (d->use_emulation) { |
|
3493 QPaintEngineEx::drawRects(rects, rectCount); |
|
3494 return; |
|
3495 } |
|
3496 |
|
3497 for (int i=0; i<rectCount; ++i) { |
|
3498 const QRectF &r = rects[i]; |
|
3499 |
|
3500 // optimization for rects which can be drawn aliased |
|
3501 if (!d->high_quality_antialiasing || d->isFastRect(r)) { |
|
3502 d->drawFastRect(r); |
|
3503 } else { |
|
3504 QPainterPath path; |
|
3505 path.addRect(r); |
|
3506 |
|
3507 if (d->has_brush) { |
|
3508 d->disableClipping(); |
|
3509 GLuint program = qt_gl_program_cache()->getProgram(d->device->context(), |
|
3510 FRAGMENT_PROGRAM_MASK_TRAPEZOID_AA, 0, true); |
|
3511 |
|
3512 if (d->matrix.type() >= QTransform::TxProject) { |
|
3513 QGLPathMaskGenerator maskGenerator(path, d->matrix, d->offscreen, program); |
|
3514 d->addItem(qt_mask_texture_cache()->getMask(maskGenerator, d)); |
|
3515 } else { |
|
3516 QGLRectMaskGenerator maskGenerator(path, d->matrix, d->offscreen, program); |
|
3517 d->addItem(qt_mask_texture_cache()->getMask(maskGenerator, d)); |
|
3518 } |
|
3519 |
|
3520 d->enableClipping(); |
|
3521 } |
|
3522 |
|
3523 if (d->has_pen) { |
|
3524 if (d->has_fast_pen) |
|
3525 d->strokeLines(path); |
|
3526 else |
|
3527 d->strokePath(path, false); |
|
3528 } |
|
3529 } |
|
3530 } |
|
3531 } |
|
3532 |
|
3533 static void addQuadAsTriangle(q_vertexType *quad, q_vertexType *triangle) |
|
3534 { |
|
3535 triangle[0] = quad[0]; |
|
3536 triangle[1] = quad[1]; |
|
3537 |
|
3538 triangle[2] = quad[2]; |
|
3539 triangle[3] = quad[3]; |
|
3540 |
|
3541 triangle[4] = quad[4]; |
|
3542 triangle[5] = quad[5]; |
|
3543 |
|
3544 triangle[6] = quad[4]; |
|
3545 triangle[7] = quad[5]; |
|
3546 |
|
3547 triangle[8] = quad[6]; |
|
3548 triangle[9] = quad[7]; |
|
3549 |
|
3550 triangle[10] = quad[0]; |
|
3551 triangle[11] = quad[1]; |
|
3552 } |
|
3553 |
|
3554 void QOpenGLPaintEngine::drawPoints(const QPoint *points, int pointCount) |
|
3555 { |
|
3556 Q_ASSERT(sizeof(QT_PointF) == sizeof(QPointF)); |
|
3557 QT_PointF fp[256]; |
|
3558 while (pointCount) { |
|
3559 int i = 0; |
|
3560 while (i < pointCount && i < 256) { |
|
3561 fp[i].x = points[i].x(); |
|
3562 fp[i].y = points[i].y(); |
|
3563 ++i; |
|
3564 } |
|
3565 drawPoints((QPointF *)(void *)fp, i); |
|
3566 points += i; |
|
3567 pointCount -= i; |
|
3568 } |
|
3569 } |
|
3570 |
|
3571 void QOpenGLPaintEngine::drawPoints(const QPointF *points, int pointCount) |
|
3572 { |
|
3573 Q_D(QOpenGLPaintEngine); |
|
3574 |
|
3575 if (d->use_emulation) { |
|
3576 QPaintEngineEx::drawPoints(points, pointCount); |
|
3577 return; |
|
3578 } |
|
3579 |
|
3580 d->setGradientOps(d->cpen.brush(), QRectF()); |
|
3581 |
|
3582 if (!d->cpen.isCosmetic() || d->high_quality_antialiasing) { |
|
3583 Qt::PenCapStyle capStyle = d->cpen.capStyle(); |
|
3584 if (capStyle == Qt::FlatCap) |
|
3585 d->cpen.setCapStyle(Qt::SquareCap); |
|
3586 QPaintEngine::drawPoints(points, pointCount); |
|
3587 d->cpen.setCapStyle(capStyle); |
|
3588 return; |
|
3589 } |
|
3590 |
|
3591 d->flushDrawQueue(); |
|
3592 |
|
3593 if (d->has_fast_pen) { |
|
3594 QVarLengthArray<q_vertexType> vertexArray(6 * pointCount); |
|
3595 |
|
3596 glMatrixMode(GL_MODELVIEW); |
|
3597 glPushMatrix(); |
|
3598 glLoadIdentity(); |
|
3599 |
|
3600 int j = 0; |
|
3601 for (int i = 0; i < pointCount; ++i) { |
|
3602 QPointF mapped = d->matrix.map(points[i]); |
|
3603 |
|
3604 qreal xf = qRound(mapped.x()); |
|
3605 qreal yf = qRound(mapped.y()); |
|
3606 |
|
3607 q_vertexType x = f2vt(xf); |
|
3608 q_vertexType y = f2vt(yf); |
|
3609 |
|
3610 vertexArray[j++] = x; |
|
3611 vertexArray[j++] = y - f2vt(0.5); |
|
3612 |
|
3613 vertexArray[j++] = x + f2vt(1.5); |
|
3614 vertexArray[j++] = y + f2vt(1.0); |
|
3615 |
|
3616 vertexArray[j++] = x; |
|
3617 vertexArray[j++] = y + f2vt(1.0); |
|
3618 } |
|
3619 |
|
3620 glEnableClientState(GL_VERTEX_ARRAY); |
|
3621 |
|
3622 glVertexPointer(2, q_vertexTypeEnum, 0, vertexArray.constData()); |
|
3623 glDrawArrays(GL_TRIANGLES, 0, pointCount*3); |
|
3624 |
|
3625 glDisableClientState(GL_VERTEX_ARRAY); |
|
3626 |
|
3627 glPopMatrix(); |
|
3628 return; |
|
3629 } |
|
3630 |
|
3631 const qreal *vertexArray = reinterpret_cast<const qreal*>(&points[0]); |
|
3632 |
|
3633 if (sizeof(qreal) == sizeof(double)) { |
|
3634 Q_ASSERT(sizeof(QPointF) == 16); |
|
3635 glVertexPointer(2, GL_DOUBLE, 0, vertexArray); |
|
3636 } |
|
3637 else { |
|
3638 Q_ASSERT(sizeof(QPointF) == 8); |
|
3639 glVertexPointer(2, q_vertexTypeEnum, 0, vertexArray); |
|
3640 } |
|
3641 |
|
3642 glEnableClientState(GL_VERTEX_ARRAY); |
|
3643 glDrawArrays(GL_POINTS, 0, pointCount); |
|
3644 glDisableClientState(GL_VERTEX_ARRAY); |
|
3645 } |
|
3646 |
|
3647 void QOpenGLPaintEngine::drawLines(const QLine *lines, int lineCount) |
|
3648 { |
|
3649 struct PointF { |
|
3650 qreal x; |
|
3651 qreal y; |
|
3652 }; |
|
3653 struct LineF { |
|
3654 PointF p1; |
|
3655 PointF p2; |
|
3656 }; |
|
3657 Q_ASSERT(sizeof(PointF) == sizeof(QPointF)); |
|
3658 Q_ASSERT(sizeof(LineF) == sizeof(QLineF)); |
|
3659 LineF fl[256]; |
|
3660 while (lineCount) { |
|
3661 int i = 0; |
|
3662 while (i < lineCount && i < 256) { |
|
3663 fl[i].p1.x = lines[i].x1(); |
|
3664 fl[i].p1.y = lines[i].y1(); |
|
3665 fl[i].p2.x = lines[i].x2(); |
|
3666 fl[i].p2.y = lines[i].y2(); |
|
3667 ++i; |
|
3668 } |
|
3669 drawLines((QLineF *)(void *)fl, i); |
|
3670 lines += i; |
|
3671 lineCount -= i; |
|
3672 } |
|
3673 } |
|
3674 |
|
3675 void QOpenGLPaintEngine::drawLines(const QLineF *lines, int lineCount) |
|
3676 { |
|
3677 Q_D(QOpenGLPaintEngine); |
|
3678 |
|
3679 if (d->use_emulation) { |
|
3680 QPaintEngineEx::drawLines(lines, lineCount); |
|
3681 return; |
|
3682 } |
|
3683 |
|
3684 if (d->has_pen) { |
|
3685 QOpenGLCoordinateOffset offset(d); |
|
3686 if (d->has_fast_pen && !d->high_quality_antialiasing) { |
|
3687 //### gradient resolving on lines isn't correct |
|
3688 d->setGradientOps(d->cpen.brush(), QRectF()); |
|
3689 |
|
3690 bool useRects = false; |
|
3691 // scale or 90 degree rotation? |
|
3692 if (d->matrix.type() <= QTransform::TxTranslate |
|
3693 || (!d->cpen.isCosmetic() |
|
3694 && (d->matrix.type() <= QTransform::TxScale |
|
3695 || (d->matrix.type() == QTransform::TxRotate |
|
3696 && d->matrix.m11() == 0 && d->matrix.m22() == 0)))) { |
|
3697 useRects = true; |
|
3698 for (int i = 0; i < lineCount; ++i) { |
|
3699 if (lines[i].p1().x() != lines[i].p2().x() |
|
3700 && lines[i].p1().y() != lines[i].p2().y()) { |
|
3701 useRects = false; |
|
3702 break; |
|
3703 } |
|
3704 } |
|
3705 } |
|
3706 |
|
3707 q_vertexType endCap = f2vt(d->cpen.capStyle() == Qt::FlatCap ? 0 : 0.5); |
|
3708 if (useRects) { |
|
3709 QVarLengthArray<q_vertexType> vertexArray(12 * lineCount); |
|
3710 |
|
3711 q_vertexType quad[8]; |
|
3712 for (int i = 0; i < lineCount; ++i) { |
|
3713 q_vertexType x1 = f2vt(lines[i].x1()); |
|
3714 q_vertexType x2 = f2vt(lines[i].x2()); |
|
3715 q_vertexType y1 = f2vt(lines[i].y1()); |
|
3716 q_vertexType y2 = f2vt(lines[i].y2()); |
|
3717 |
|
3718 if (x1 == x2) { |
|
3719 if (y1 > y2) |
|
3720 qSwap(y1, y2); |
|
3721 |
|
3722 quad[0] = x1 - f2vt(0.5); |
|
3723 quad[1] = y1 - endCap; |
|
3724 |
|
3725 quad[2] = x1 + f2vt(0.5); |
|
3726 quad[3] = y1 - endCap; |
|
3727 |
|
3728 quad[4] = x1 + f2vt(0.5); |
|
3729 quad[5] = y2 + endCap; |
|
3730 |
|
3731 quad[6] = x1 - f2vt(0.5); |
|
3732 quad[7] = y2 + endCap; |
|
3733 } else { |
|
3734 if (x1 > x2) |
|
3735 qSwap(x1, x2); |
|
3736 |
|
3737 quad[0] = x1 - endCap; |
|
3738 quad[1] = y1 + f2vt(0.5); |
|
3739 |
|
3740 quad[2] = x1 - endCap; |
|
3741 quad[3] = y1 - f2vt(0.5); |
|
3742 |
|
3743 quad[4] = x2 + endCap; |
|
3744 quad[5] = y1 - f2vt(0.5); |
|
3745 |
|
3746 quad[6] = x2 + endCap; |
|
3747 quad[7] = y1 + f2vt(0.5); |
|
3748 } |
|
3749 |
|
3750 addQuadAsTriangle(quad, &vertexArray[12*i]); |
|
3751 } |
|
3752 |
|
3753 glEnableClientState(GL_VERTEX_ARRAY); |
|
3754 |
|
3755 glVertexPointer(2, q_vertexTypeEnum, 0, vertexArray.constData()); |
|
3756 glDrawArrays(GL_TRIANGLES, 0, lineCount*6); |
|
3757 |
|
3758 glDisableClientState(GL_VERTEX_ARRAY); |
|
3759 } else { |
|
3760 QVarLengthArray<q_vertexType> vertexArray(4 * lineCount); |
|
3761 for (int i = 0; i < lineCount; ++i) { |
|
3762 const QPointF a = lines[i].p1(); |
|
3763 vertexArray[4*i] = f2vt(lines[i].x1()); |
|
3764 vertexArray[4*i+1] = f2vt(lines[i].y1()); |
|
3765 vertexArray[4*i+2] = f2vt(lines[i].x2()); |
|
3766 vertexArray[4*i+3] = f2vt(lines[i].y2()); |
|
3767 } |
|
3768 |
|
3769 glEnableClientState(GL_VERTEX_ARRAY); |
|
3770 |
|
3771 glVertexPointer(2, q_vertexTypeEnum, 0, vertexArray.constData()); |
|
3772 glDrawArrays(GL_LINES, 0, lineCount*2); |
|
3773 |
|
3774 glVertexPointer(2, q_vertexTypeEnum, 4*sizeof(q_vertexType), vertexArray.constData() + 2); |
|
3775 glDrawArrays(GL_POINTS, 0, lineCount); |
|
3776 |
|
3777 glDisableClientState(GL_VERTEX_ARRAY); |
|
3778 } |
|
3779 } else { |
|
3780 QPainterPath path; |
|
3781 path.setFillRule(Qt::WindingFill); |
|
3782 for (int i=0; i<lineCount; ++i) { |
|
3783 const QLineF &l = lines[i]; |
|
3784 |
|
3785 if (l.p1() == l.p2()) { |
|
3786 if (d->cpen.capStyle() != Qt::FlatCap) { |
|
3787 QPointF p = l.p1(); |
|
3788 drawPoints(&p, 1); |
|
3789 } |
|
3790 continue; |
|
3791 } |
|
3792 |
|
3793 path.moveTo(l.x1(), l.y1()); |
|
3794 path.lineTo(l.x2(), l.y2()); |
|
3795 } |
|
3796 |
|
3797 if (d->has_fast_pen && d->high_quality_antialiasing) |
|
3798 d->strokeLines(path); |
|
3799 else |
|
3800 d->strokePath(path, false); |
|
3801 } |
|
3802 } |
|
3803 } |
|
3804 |
|
3805 void QOpenGLPaintEngine::drawPolygon(const QPoint *points, int pointCount, PolygonDrawMode mode) |
|
3806 { |
|
3807 Q_ASSERT(sizeof(QT_PointF) == sizeof(QPointF)); |
|
3808 QVarLengthArray<QT_PointF> p(pointCount); |
|
3809 for (int i=0; i<pointCount; ++i) { |
|
3810 p[i].x = points[i].x(); |
|
3811 p[i].y = points[i].y(); |
|
3812 } |
|
3813 drawPolygon((QPointF *)p.data(), pointCount, mode); |
|
3814 } |
|
3815 |
|
3816 void QOpenGLPaintEngine::drawPolygon(const QPointF *points, int pointCount, PolygonDrawMode mode) |
|
3817 { |
|
3818 Q_D(QOpenGLPaintEngine); |
|
3819 if(pointCount < 2) |
|
3820 return; |
|
3821 |
|
3822 if (d->use_emulation) { |
|
3823 QPaintEngineEx::drawPolygon(points, pointCount, mode); |
|
3824 return; |
|
3825 } |
|
3826 |
|
3827 QRectF bounds; |
|
3828 if ((mode == ConvexMode && !d->high_quality_antialiasing && state()->brushNeedsResolving()) || |
|
3829 ((d->has_fast_pen && !d->high_quality_antialiasing) && state()->penNeedsResolving())) { |
|
3830 qreal minx = points[0].x(), miny = points[0].y(), |
|
3831 maxx = points[0].x(), maxy = points[0].y(); |
|
3832 for (int i = 1; i < pointCount; ++i) { |
|
3833 const QPointF &pt = points[i]; |
|
3834 if (minx > pt.x()) |
|
3835 minx = pt.x(); |
|
3836 if (miny > pt.y()) |
|
3837 miny = pt.y(); |
|
3838 if (maxx < pt.x()) |
|
3839 maxx = pt.x(); |
|
3840 if (maxy < pt.y()) |
|
3841 maxy = pt.y(); |
|
3842 } |
|
3843 bounds = QRectF(minx, maxx, maxx-minx, maxy-miny); |
|
3844 } |
|
3845 |
|
3846 QOpenGLCoordinateOffset offset(d); |
|
3847 |
|
3848 if (d->has_brush && mode != PolylineMode) { |
|
3849 if (mode == ConvexMode && !d->high_quality_antialiasing) { |
|
3850 //### resolving on polygon from points isn't correct |
|
3851 d->setGradientOps(d->cbrush, bounds); |
|
3852 |
|
3853 const qreal *vertexArray = reinterpret_cast<const qreal*>(&points[0]); |
|
3854 |
|
3855 if (sizeof(qreal) == sizeof(double)) { |
|
3856 Q_ASSERT(sizeof(QPointF) == 16); |
|
3857 glVertexPointer(2, GL_DOUBLE, 0, vertexArray); |
|
3858 } |
|
3859 else { |
|
3860 Q_ASSERT(sizeof(QPointF) == 8); |
|
3861 glVertexPointer(2, q_vertexTypeEnum, 0, vertexArray); |
|
3862 } |
|
3863 |
|
3864 glEnableClientState(GL_VERTEX_ARRAY); |
|
3865 glDrawArrays(GL_TRIANGLE_FAN, 0, pointCount); |
|
3866 glDisableClientState(GL_VERTEX_ARRAY); |
|
3867 } else { |
|
3868 QPainterPath path; |
|
3869 path.setFillRule(mode == WindingMode ? Qt::WindingFill : Qt::OddEvenFill); |
|
3870 path.moveTo(points[0]); |
|
3871 for (int i=1; i<pointCount; ++i) |
|
3872 path.lineTo(points[i]); |
|
3873 d->fillPath(path); |
|
3874 } |
|
3875 } |
|
3876 |
|
3877 if (d->has_pen) { |
|
3878 if (d->has_fast_pen && !d->high_quality_antialiasing) { |
|
3879 d->setGradientOps(d->cpen.brush(), bounds); |
|
3880 QVarLengthArray<q_vertexType> vertexArray(pointCount*2 + 2); |
|
3881 glVertexPointer(2, q_vertexTypeEnum, 0, vertexArray.constData()); |
|
3882 int i; |
|
3883 for (i=0; i<pointCount; ++i) { |
|
3884 vertexArray[i*2] = f2vt(points[i].x()); |
|
3885 vertexArray[i*2+1] = f2vt(points[i].y()); |
|
3886 } |
|
3887 |
|
3888 glEnableClientState(GL_VERTEX_ARRAY); |
|
3889 if (mode != PolylineMode) { |
|
3890 vertexArray[i*2] = vertexArray[0]; |
|
3891 vertexArray[i*2+1] = vertexArray[1]; |
|
3892 glDrawArrays(GL_LINE_STRIP, 0, pointCount+1); |
|
3893 } else { |
|
3894 glDrawArrays(GL_LINE_STRIP, 0, pointCount); |
|
3895 glDrawArrays(GL_POINTS, pointCount-1, 1); |
|
3896 } |
|
3897 glDisableClientState(GL_VERTEX_ARRAY); |
|
3898 } else { |
|
3899 QPainterPath path(points[0]); |
|
3900 for (int i = 1; i < pointCount; ++i) |
|
3901 path.lineTo(points[i]); |
|
3902 if (mode != PolylineMode) |
|
3903 path.lineTo(points[0]); |
|
3904 |
|
3905 if (d->has_fast_pen) |
|
3906 d->strokeLines(path); |
|
3907 else |
|
3908 d->strokePath(path, true); |
|
3909 } |
|
3910 } |
|
3911 } |
|
3912 |
|
3913 void QOpenGLPaintEnginePrivate::strokeLines(const QPainterPath &path) |
|
3914 { |
|
3915 DEBUG_ONCE_STR("QOpenGLPaintEnginePrivate::strokeLines()"); |
|
3916 |
|
3917 qreal penWidth = cpen.widthF(); |
|
3918 |
|
3919 GLuint program = qt_gl_program_cache()->getProgram(device->context(), |
|
3920 FRAGMENT_PROGRAM_MASK_TRAPEZOID_AA, 0, true); |
|
3921 QGLLineMaskGenerator maskGenerator(path, matrix, penWidth == 0 ? 1.0 : penWidth, |
|
3922 offscreen, program); |
|
3923 |
|
3924 disableClipping(); |
|
3925 |
|
3926 QBrush temp = cbrush; |
|
3927 QPointF origin = brush_origin; |
|
3928 |
|
3929 cbrush = cpen.brush(); |
|
3930 brush_origin = QPointF(); |
|
3931 |
|
3932 addItem(qt_mask_texture_cache()->getMask(maskGenerator, this)); |
|
3933 |
|
3934 cbrush = temp; |
|
3935 brush_origin = origin; |
|
3936 |
|
3937 enableClipping(); |
|
3938 } |
|
3939 |
|
3940 extern bool qt_scaleForTransform(const QTransform &transform, qreal *scale); // qtransform.cpp |
|
3941 |
|
3942 void QOpenGLPaintEnginePrivate::strokePath(const QPainterPath &path, bool use_cache) |
|
3943 { |
|
3944 QBrush old_brush = cbrush; |
|
3945 cbrush = cpen.brush(); |
|
3946 |
|
3947 qreal txscale = 1; |
|
3948 if (cpen.isCosmetic() || (qt_scaleForTransform(matrix, &txscale) && txscale != 1)) { |
|
3949 QTransform temp = matrix; |
|
3950 matrix = QTransform(); |
|
3951 glPushMatrix(); |
|
3952 |
|
3953 if (has_antialiasing) { |
|
3954 glLoadIdentity(); |
|
3955 } else { |
|
3956 float offs_matrix[] = |
|
3957 { 1, 0, 0, 0, |
|
3958 0, 1, 0, 0, |
|
3959 0, 0, 1, 0, |
|
3960 0.5, 0.5, 0, 1 }; |
|
3961 glLoadMatrixf(offs_matrix); |
|
3962 } |
|
3963 |
|
3964 QPen pen = cpen; |
|
3965 if (txscale != 1) |
|
3966 pen.setWidthF(pen.widthF() * txscale); |
|
3967 if (use_cache) |
|
3968 fillPath(qt_opengl_stroke_cache()->getStrokedPath(temp.map(path), pen)); |
|
3969 else |
|
3970 fillPath(strokeForPath(temp.map(path), pen)); |
|
3971 |
|
3972 glPopMatrix(); |
|
3973 matrix = temp; |
|
3974 } else if (use_cache) { |
|
3975 fillPath(qt_opengl_stroke_cache()->getStrokedPath(path, cpen)); |
|
3976 } else { |
|
3977 fillPath(strokeForPath(path, cpen)); |
|
3978 } |
|
3979 |
|
3980 cbrush = old_brush; |
|
3981 } |
|
3982 |
|
3983 void QOpenGLPaintEnginePrivate::strokePathFastPen(const QPainterPath &path, bool needsResolving) |
|
3984 { |
|
3985 #ifndef QT_OPENGL_ES |
|
3986 QRectF bounds; |
|
3987 if (needsResolving) |
|
3988 bounds = path.controlPointRect(); |
|
3989 setGradientOps(cpen.brush(), bounds); |
|
3990 |
|
3991 QBezier beziers[32]; |
|
3992 for (int i=0; i<path.elementCount(); ++i) { |
|
3993 const QPainterPath::Element &e = path.elementAt(i); |
|
3994 switch (e.type) { |
|
3995 case QPainterPath::MoveToElement: |
|
3996 if (i != 0) |
|
3997 glEnd(); // GL_LINE_STRIP |
|
3998 glBegin(GL_LINE_STRIP); |
|
3999 glVertex2d(e.x, e.y); |
|
4000 |
|
4001 break; |
|
4002 case QPainterPath::LineToElement: |
|
4003 glVertex2d(e.x, e.y); |
|
4004 break; |
|
4005 |
|
4006 case QPainterPath::CurveToElement: |
|
4007 { |
|
4008 QPointF sp = path.elementAt(i-1); |
|
4009 QPointF cp2 = path.elementAt(i+1); |
|
4010 QPointF ep = path.elementAt(i+2); |
|
4011 i+=2; |
|
4012 |
|
4013 qreal inverseScaleHalf = inverseScale / 2; |
|
4014 beziers[0] = QBezier::fromPoints(sp, e, cp2, ep); |
|
4015 QBezier *b = beziers; |
|
4016 while (b >= beziers) { |
|
4017 // check if we can pop the top bezier curve from the stack |
|
4018 qreal l = qAbs(b->x4 - b->x1) + qAbs(b->y4 - b->y1); |
|
4019 qreal d; |
|
4020 if (l > inverseScale) { |
|
4021 d = qAbs( (b->x4 - b->x1)*(b->y1 - b->y2) |
|
4022 - (b->y4 - b->y1)*(b->x1 - b->x2) ) |
|
4023 + qAbs( (b->x4 - b->x1)*(b->y1 - b->y3) |
|
4024 - (b->y4 - b->y1)*(b->x1 - b->x3) ); |
|
4025 d /= l; |
|
4026 } else { |
|
4027 d = qAbs(b->x1 - b->x2) + qAbs(b->y1 - b->y2) + |
|
4028 qAbs(b->x1 - b->x3) + qAbs(b->y1 - b->y3); |
|
4029 } |
|
4030 if (d < inverseScaleHalf || b == beziers + 31) { |
|
4031 // good enough, we pop it off and add the endpoint |
|
4032 glVertex2d(b->x4, b->y4); |
|
4033 --b; |
|
4034 } else { |
|
4035 // split, second half of the polygon goes lower into the stack |
|
4036 b->split(b+1, b); |
|
4037 ++b; |
|
4038 } |
|
4039 } |
|
4040 } // case CurveToElement |
|
4041 default: |
|
4042 break; |
|
4043 } // end of switch |
|
4044 } |
|
4045 glEnd(); // GL_LINE_STRIP |
|
4046 #else |
|
4047 // have to use vertex arrays on embedded |
|
4048 QRectF bounds; |
|
4049 if (needsResolving) |
|
4050 bounds = path.controlPointRect(); |
|
4051 setGradientOps(cpen.brush(), bounds); |
|
4052 |
|
4053 glEnableClientState(GL_VERTEX_ARRAY); |
|
4054 tess_points.reset(); |
|
4055 QBezier beziers[32]; |
|
4056 for (int i=0; i<path.elementCount(); ++i) { |
|
4057 const QPainterPath::Element &e = path.elementAt(i); |
|
4058 switch (e.type) { |
|
4059 case QPainterPath::MoveToElement: |
|
4060 if (i != 0) { |
|
4061 glVertexPointer(2, q_vertexTypeEnum, 0, tess_points.data()); |
|
4062 glDrawArrays(GL_LINE_STRIP, 0, tess_points.size()); |
|
4063 tess_points.reset(); |
|
4064 } |
|
4065 tess_points.add(QPointF(e.x, e.y)); |
|
4066 |
|
4067 break; |
|
4068 case QPainterPath::LineToElement: |
|
4069 tess_points.add(QPointF(e.x, e.y)); |
|
4070 break; |
|
4071 |
|
4072 case QPainterPath::CurveToElement: |
|
4073 { |
|
4074 QPointF sp = path.elementAt(i-1); |
|
4075 QPointF cp2 = path.elementAt(i+1); |
|
4076 QPointF ep = path.elementAt(i+2); |
|
4077 i+=2; |
|
4078 |
|
4079 qreal inverseScaleHalf = inverseScale / 2; |
|
4080 beziers[0] = QBezier::fromPoints(sp, e, cp2, ep); |
|
4081 QBezier *b = beziers; |
|
4082 while (b >= beziers) { |
|
4083 // check if we can pop the top bezier curve from the stack |
|
4084 qreal l = qAbs(b->x4 - b->x1) + qAbs(b->y4 - b->y1); |
|
4085 qreal d; |
|
4086 if (l > inverseScale) { |
|
4087 d = qAbs( (b->x4 - b->x1)*(b->y1 - b->y2) |
|
4088 - (b->y4 - b->y1)*(b->x1 - b->x2) ) |
|
4089 + qAbs( (b->x4 - b->x1)*(b->y1 - b->y3) |
|
4090 - (b->y4 - b->y1)*(b->x1 - b->x3) ); |
|
4091 d /= l; |
|
4092 } else { |
|
4093 d = qAbs(b->x1 - b->x2) + qAbs(b->y1 - b->y2) + |
|
4094 qAbs(b->x1 - b->x3) + qAbs(b->y1 - b->y3); |
|
4095 } |
|
4096 if (d < inverseScaleHalf || b == beziers + 31) { |
|
4097 // good enough, we pop it off and add the endpoint |
|
4098 tess_points.add(QPointF(b->x4, b->y4)); |
|
4099 --b; |
|
4100 } else { |
|
4101 // split, second half of the polygon goes lower into the stack |
|
4102 b->split(b+1, b); |
|
4103 ++b; |
|
4104 } |
|
4105 } |
|
4106 } // case CurveToElement |
|
4107 default: |
|
4108 break; |
|
4109 } // end of switch |
|
4110 } |
|
4111 glVertexPointer(2, q_vertexTypeEnum, 0, tess_points.data()); |
|
4112 glDrawArrays(GL_LINE_STRIP, 0, tess_points.size()); |
|
4113 glDisableClientState(GL_VERTEX_ARRAY); |
|
4114 #endif |
|
4115 } |
|
4116 |
|
4117 static bool pathClosed(const QPainterPath &path) |
|
4118 { |
|
4119 QPointF lastMoveTo = path.elementAt(0); |
|
4120 QPointF lastPoint = lastMoveTo; |
|
4121 |
|
4122 for (int i = 1; i < path.elementCount(); ++i) { |
|
4123 const QPainterPath::Element &e = path.elementAt(i); |
|
4124 switch (e.type) { |
|
4125 case QPainterPath::MoveToElement: |
|
4126 if (lastMoveTo != lastPoint) |
|
4127 return false; |
|
4128 lastMoveTo = lastPoint = e; |
|
4129 break; |
|
4130 case QPainterPath::LineToElement: |
|
4131 lastPoint = e; |
|
4132 break; |
|
4133 case QPainterPath::CurveToElement: |
|
4134 lastPoint = path.elementAt(i + 2); |
|
4135 i+=2; |
|
4136 break; |
|
4137 default: |
|
4138 break; |
|
4139 } |
|
4140 } |
|
4141 |
|
4142 return lastMoveTo == lastPoint; |
|
4143 } |
|
4144 |
|
4145 void QOpenGLPaintEngine::drawPath(const QPainterPath &path) |
|
4146 { |
|
4147 Q_D(QOpenGLPaintEngine); |
|
4148 |
|
4149 if (path.isEmpty()) |
|
4150 return; |
|
4151 |
|
4152 if (d->use_emulation) { |
|
4153 QPaintEngineEx::drawPath(path); |
|
4154 return; |
|
4155 } |
|
4156 |
|
4157 QOpenGLCoordinateOffset offset(d); |
|
4158 |
|
4159 if (d->has_brush) { |
|
4160 bool path_closed = pathClosed(path); |
|
4161 |
|
4162 bool has_thick_pen = |
|
4163 path_closed |
|
4164 && d->has_pen |
|
4165 && d->cpen.style() == Qt::SolidLine |
|
4166 && d->cpen.isSolid() |
|
4167 && d->cpen.color().alpha() == 255 |
|
4168 && d->txop < QTransform::TxProject |
|
4169 && d->cpen.widthF() >= 2 / qSqrt(qMin(d->matrix.m11() * d->matrix.m11() |
|
4170 + d->matrix.m21() * d->matrix.m21(), |
|
4171 d->matrix.m12() * d->matrix.m12() |
|
4172 + d->matrix.m22() * d->matrix.m22())); |
|
4173 |
|
4174 if (has_thick_pen) { |
|
4175 DEBUG_ONCE qDebug() << "QOpenGLPaintEngine::drawPath(): Using thick pen optimization, style:" << d->cbrush.style(); |
|
4176 |
|
4177 d->flushDrawQueue(); |
|
4178 |
|
4179 bool temp = d->high_quality_antialiasing; |
|
4180 d->high_quality_antialiasing = false; |
|
4181 |
|
4182 updateCompositionMode(d->composition_mode); |
|
4183 |
|
4184 d->fillPath(path); |
|
4185 |
|
4186 d->high_quality_antialiasing = temp; |
|
4187 updateCompositionMode(d->composition_mode); |
|
4188 } else { |
|
4189 d->fillPath(path); |
|
4190 } |
|
4191 } |
|
4192 |
|
4193 if (d->has_pen) { |
|
4194 if (d->has_fast_pen && !d->high_quality_antialiasing) |
|
4195 d->strokePathFastPen(path, state()->penNeedsResolving()); |
|
4196 else |
|
4197 d->strokePath(path, true); |
|
4198 } |
|
4199 } |
|
4200 |
|
4201 void QOpenGLPaintEnginePrivate::drawImageAsPath(const QRectF &r, const QImage &img, const QRectF &sr) |
|
4202 { |
|
4203 QBrush old_brush = cbrush; |
|
4204 QPointF old_brush_origin = brush_origin; |
|
4205 |
|
4206 qreal scaleX = r.width() / sr.width(); |
|
4207 qreal scaleY = r.height() / sr.height(); |
|
4208 |
|
4209 QTransform brush_matrix = QTransform::fromTranslate(r.left(), r.top()); |
|
4210 brush_matrix.scale(scaleX, scaleY); |
|
4211 brush_matrix.translate(-sr.left(), -sr.top()); |
|
4212 |
|
4213 cbrush = QBrush(img); |
|
4214 cbrush.setTransform(brush_matrix); |
|
4215 brush_origin = QPointF(); |
|
4216 |
|
4217 QPainterPath p; |
|
4218 p.addRect(r); |
|
4219 fillPath(p); |
|
4220 |
|
4221 cbrush = old_brush; |
|
4222 brush_origin = old_brush_origin; |
|
4223 } |
|
4224 |
|
4225 void QOpenGLPaintEnginePrivate::drawTiledImageAsPath(const QRectF &r, const QImage &img, qreal sx, qreal sy, |
|
4226 const QPointF &offset) |
|
4227 { |
|
4228 QBrush old_brush = cbrush; |
|
4229 QPointF old_brush_origin = brush_origin; |
|
4230 |
|
4231 QTransform brush_matrix = QTransform::fromTranslate(r.left(), r.top()); |
|
4232 brush_matrix.scale(sx, sy); |
|
4233 brush_matrix.translate(-offset.x(), -offset.y()); |
|
4234 |
|
4235 cbrush = QBrush(img); |
|
4236 cbrush.setTransform(brush_matrix); |
|
4237 brush_origin = QPointF(); |
|
4238 |
|
4239 QPainterPath p; |
|
4240 p.addRect(r); |
|
4241 fillPath(p); |
|
4242 |
|
4243 cbrush = old_brush; |
|
4244 brush_origin = old_brush_origin; |
|
4245 } |
|
4246 |
|
4247 static const QRectF scaleRect(const QRectF &r, qreal sx, qreal sy) |
|
4248 { |
|
4249 return QRectF(r.x() * sx, r.y() * sy, r.width() * sx, r.height() * sy); |
|
4250 } |
|
4251 |
|
4252 template <typename T> |
|
4253 static const T qSubImage(const T &image, const QRectF &src, QRectF *srcNew) |
|
4254 { |
|
4255 const int sx1 = qMax(0, qFloor(src.left())); |
|
4256 const int sy1 = qMax(0, qFloor(src.top())); |
|
4257 const int sx2 = qMin(image.width(), qCeil(src.right())); |
|
4258 const int sy2 = qMin(image.height(), qCeil(src.bottom())); |
|
4259 |
|
4260 const T sub = image.copy(sx1, sy1, sx2 - sx1, sy2 - sy1); |
|
4261 |
|
4262 if (srcNew) |
|
4263 *srcNew = src.translated(-sx1, -sy1); |
|
4264 |
|
4265 return sub; |
|
4266 } |
|
4267 |
|
4268 void QOpenGLPaintEngine::drawPixmap(const QRectF &r, const QPixmap &pm, const QRectF &sr) |
|
4269 { |
|
4270 Q_D(QOpenGLPaintEngine); |
|
4271 if (pm.depth() == 1) { |
|
4272 QPixmap tpx(pm.size()); |
|
4273 tpx.fill(Qt::transparent); |
|
4274 QPainter p(&tpx); |
|
4275 p.setPen(d->cpen); |
|
4276 p.drawPixmap(0, 0, pm); |
|
4277 p.end(); |
|
4278 drawPixmap(r, tpx, sr); |
|
4279 return; |
|
4280 } |
|
4281 |
|
4282 const int sz = d->max_texture_size; |
|
4283 if (pm.width() > sz || pm.height() > sz) { |
|
4284 QRectF subsr; |
|
4285 const QPixmap sub = qSubImage(pm, sr, &subsr); |
|
4286 |
|
4287 if (sub.width() <= sz && sub.height() <= sz) { |
|
4288 drawPixmap(r, sub, subsr); |
|
4289 } else { |
|
4290 const QPixmap scaled = sub.scaled(sz, sz, Qt::KeepAspectRatio); |
|
4291 const qreal sx = scaled.width() / qreal(sub.width()); |
|
4292 const qreal sy = scaled.height() / qreal(sub.height()); |
|
4293 |
|
4294 drawPixmap(r, scaled, scaleRect(subsr, sx, sy)); |
|
4295 } |
|
4296 return; |
|
4297 } |
|
4298 |
|
4299 |
|
4300 if (d->composition_mode > QPainter::CompositionMode_Plus || (d->high_quality_antialiasing && !d->isFastRect(r))) |
|
4301 d->drawImageAsPath(r, pm.toImage(), sr); |
|
4302 else { |
|
4303 GLenum target = qt_gl_preferredTextureTarget(); |
|
4304 d->flushDrawQueue(); |
|
4305 QGLTexture *tex = |
|
4306 d->device->context()->d_func()->bindTexture(pm, target, GL_RGBA, |
|
4307 QGLContext::InternalBindOption); |
|
4308 drawTextureRect(pm.width(), pm.height(), r, sr, target, tex); |
|
4309 } |
|
4310 } |
|
4311 |
|
4312 void QOpenGLPaintEngine::drawTiledPixmap(const QRectF &r, const QPixmap &pm, const QPointF &offset) |
|
4313 { |
|
4314 Q_D(QOpenGLPaintEngine); |
|
4315 if (pm.depth() == 1) { |
|
4316 QPixmap tpx(pm.size()); |
|
4317 tpx.fill(Qt::transparent); |
|
4318 QPainter p(&tpx); |
|
4319 p.setPen(d->cpen); |
|
4320 p.drawPixmap(0, 0, pm); |
|
4321 p.end(); |
|
4322 drawTiledPixmap(r, tpx, offset); |
|
4323 return; |
|
4324 } |
|
4325 |
|
4326 QImage scaled; |
|
4327 const int sz = d->max_texture_size; |
|
4328 if (pm.width() > sz || pm.height() > sz) { |
|
4329 int rw = qCeil(r.width()); |
|
4330 int rh = qCeil(r.height()); |
|
4331 if (rw < pm.width() && rh < pm.height()) { |
|
4332 drawTiledPixmap(r, pm.copy(0, 0, rw, rh), offset); |
|
4333 return; |
|
4334 } |
|
4335 |
|
4336 scaled = pm.toImage().scaled(sz, sz, Qt::KeepAspectRatio); |
|
4337 } |
|
4338 |
|
4339 if (d->composition_mode > QPainter::CompositionMode_Plus || (d->high_quality_antialiasing && !d->isFastRect(r))) { |
|
4340 if (scaled.isNull()) |
|
4341 d->drawTiledImageAsPath(r, pm.toImage(), 1, 1, offset); |
|
4342 else { |
|
4343 const qreal sx = pm.width() / qreal(scaled.width()); |
|
4344 const qreal sy = pm.height() / qreal(scaled.height()); |
|
4345 d->drawTiledImageAsPath(r, scaled, sx, sy, offset); |
|
4346 } |
|
4347 } else { |
|
4348 d->flushDrawQueue(); |
|
4349 |
|
4350 QGLTexture *tex; |
|
4351 if (scaled.isNull()) |
|
4352 tex = d->device->context()->d_func()->bindTexture(pm, GL_TEXTURE_2D, GL_RGBA, |
|
4353 QGLContext::InternalBindOption); |
|
4354 else |
|
4355 tex = d->device->context()->d_func()->bindTexture(scaled, GL_TEXTURE_2D, GL_RGBA, |
|
4356 QGLContext::InternalBindOption); |
|
4357 updateTextureFilter(GL_TEXTURE_2D, GL_REPEAT, d->use_smooth_pixmap_transform); |
|
4358 |
|
4359 #ifndef QT_OPENGL_ES |
|
4360 glPushAttrib(GL_CURRENT_BIT); |
|
4361 glDisable(GL_TEXTURE_GEN_S); |
|
4362 #endif |
|
4363 glColor4f(d->opacity, d->opacity, d->opacity, d->opacity); |
|
4364 glEnable(GL_TEXTURE_2D); |
|
4365 |
|
4366 GLdouble tc_w = r.width()/pm.width(); |
|
4367 GLdouble tc_h = r.height()/pm.height(); |
|
4368 |
|
4369 // Rotate the texture so that it is aligned correctly and the |
|
4370 // wrapping is done correctly |
|
4371 if (tex->options & QGLContext::InvertedYBindOption) { |
|
4372 glMatrixMode(GL_TEXTURE); |
|
4373 glPushMatrix(); |
|
4374 glRotatef(180.0, 0.0, 1.0, 0.0); |
|
4375 glRotatef(180.0, 0.0, 0.0, 1.0); |
|
4376 } |
|
4377 |
|
4378 q_vertexType vertexArray[4*2]; |
|
4379 q_vertexType texCoordArray[4*2]; |
|
4380 |
|
4381 double offset_x = offset.x() / pm.width(); |
|
4382 double offset_y = offset.y() / pm.height(); |
|
4383 |
|
4384 qt_add_rect_to_array(r, vertexArray); |
|
4385 qt_add_texcoords_to_array(offset_x, offset_y, |
|
4386 tc_w + offset_x, tc_h + offset_y, texCoordArray); |
|
4387 |
|
4388 glVertexPointer(2, q_vertexTypeEnum, 0, vertexArray); |
|
4389 glTexCoordPointer(2, q_vertexTypeEnum, 0, texCoordArray); |
|
4390 |
|
4391 glEnableClientState(GL_VERTEX_ARRAY); |
|
4392 glEnableClientState(GL_TEXTURE_COORD_ARRAY); |
|
4393 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); |
|
4394 glDisableClientState(GL_TEXTURE_COORD_ARRAY); |
|
4395 glDisableClientState(GL_VERTEX_ARRAY); |
|
4396 if (tex->options & QGLContext::InvertedYBindOption) |
|
4397 glPopMatrix(); |
|
4398 |
|
4399 glDisable(GL_TEXTURE_2D); |
|
4400 #ifndef QT_OPENGL_ES |
|
4401 glPopAttrib(); |
|
4402 #endif |
|
4403 } |
|
4404 } |
|
4405 |
|
4406 void QOpenGLPaintEngine::drawImage(const QRectF &r, const QImage &image, const QRectF &sr, |
|
4407 Qt::ImageConversionFlags) |
|
4408 { |
|
4409 Q_D(QOpenGLPaintEngine); |
|
4410 |
|
4411 const int sz = d->max_texture_size; |
|
4412 if (image.width() > sz || image.height() > sz) { |
|
4413 QRectF subsr; |
|
4414 const QImage sub = qSubImage(image, sr, &subsr); |
|
4415 |
|
4416 if (sub.width() <= sz && sub.height() <= sz) { |
|
4417 drawImage(r, sub, subsr, 0); |
|
4418 } else { |
|
4419 const QImage scaled = sub.scaled(sz, sz, Qt::KeepAspectRatio); |
|
4420 const qreal sx = scaled.width() / qreal(sub.width()); |
|
4421 const qreal sy = scaled.height() / qreal(sub.height()); |
|
4422 |
|
4423 drawImage(r, scaled, scaleRect(subsr, sx, sy), 0); |
|
4424 } |
|
4425 return; |
|
4426 } |
|
4427 |
|
4428 if (d->composition_mode > QPainter::CompositionMode_Plus || (d->high_quality_antialiasing && !d->isFastRect(r))) |
|
4429 d->drawImageAsPath(r, image, sr); |
|
4430 else { |
|
4431 GLenum target = qt_gl_preferredTextureTarget(); |
|
4432 d->flushDrawQueue(); |
|
4433 QGLTexture *tex = |
|
4434 d->device->context()->d_func()->bindTexture(image, target, GL_RGBA, |
|
4435 QGLContext::InternalBindOption); |
|
4436 drawTextureRect(image.width(), image.height(), r, sr, target, tex); |
|
4437 } |
|
4438 } |
|
4439 |
|
4440 void QOpenGLPaintEngine::drawTextureRect(int tx_width, int tx_height, const QRectF &r, |
|
4441 const QRectF &sr, GLenum target, QGLTexture *tex) |
|
4442 { |
|
4443 Q_D(QOpenGLPaintEngine); |
|
4444 #ifndef QT_OPENGL_ES |
|
4445 glPushAttrib(GL_CURRENT_BIT); |
|
4446 glDisable(GL_TEXTURE_GEN_S); |
|
4447 #endif |
|
4448 glColor4f(d->opacity, d->opacity, d->opacity, d->opacity); |
|
4449 glEnable(target); |
|
4450 updateTextureFilter(target, GL_CLAMP_TO_EDGE, d->use_smooth_pixmap_transform); |
|
4451 |
|
4452 qreal x1, x2, y1, y2; |
|
4453 if (target == GL_TEXTURE_2D) { |
|
4454 x1 = sr.x() / tx_width; |
|
4455 x2 = x1 + sr.width() / tx_width; |
|
4456 if (tex->options & QGLContext::InvertedYBindOption) { |
|
4457 y1 = 1 - (sr.bottom() / tx_height); |
|
4458 y2 = 1 - (sr.y() / tx_height); |
|
4459 } else { |
|
4460 y1 = sr.bottom() / tx_height; |
|
4461 y2 = sr.y() / tx_height; |
|
4462 } |
|
4463 } else { |
|
4464 x1 = sr.x(); |
|
4465 x2 = sr.right(); |
|
4466 y1 = sr.bottom(); |
|
4467 y2 = sr.y(); |
|
4468 } |
|
4469 |
|
4470 q_vertexType vertexArray[4*2]; |
|
4471 q_vertexType texCoordArray[4*2]; |
|
4472 |
|
4473 qt_add_rect_to_array(r, vertexArray); |
|
4474 qt_add_texcoords_to_array(x1, y2, x2, y1, texCoordArray); |
|
4475 |
|
4476 glVertexPointer(2, q_vertexTypeEnum, 0, vertexArray); |
|
4477 glTexCoordPointer(2, q_vertexTypeEnum, 0, texCoordArray); |
|
4478 |
|
4479 glEnableClientState(GL_VERTEX_ARRAY); |
|
4480 glEnableClientState(GL_TEXTURE_COORD_ARRAY); |
|
4481 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); |
|
4482 glDisableClientState(GL_TEXTURE_COORD_ARRAY); |
|
4483 glDisableClientState(GL_VERTEX_ARRAY); |
|
4484 |
|
4485 glDisable(target); |
|
4486 #ifndef QT_OPENGL_ES |
|
4487 glPopAttrib(); |
|
4488 #endif |
|
4489 } |
|
4490 |
|
4491 #ifdef Q_WS_WIN |
|
4492 HDC |
|
4493 #else |
|
4494 Qt::HANDLE |
|
4495 #endif |
|
4496 QOpenGLPaintEngine::handle() const |
|
4497 { |
|
4498 return 0; |
|
4499 } |
|
4500 |
|
4501 static const int x_margin = 1; |
|
4502 static const int y_margin = 0; |
|
4503 |
|
4504 struct QGLGlyphCoord { |
|
4505 // stores the offset and size of a glyph texture |
|
4506 qreal x; |
|
4507 qreal y; |
|
4508 qreal width; |
|
4509 qreal height; |
|
4510 qreal log_width; |
|
4511 qreal log_height; |
|
4512 QFixed x_offset; |
|
4513 QFixed y_offset; |
|
4514 }; |
|
4515 |
|
4516 struct QGLFontTexture { |
|
4517 int x_offset; // glyph offset within the |
|
4518 int y_offset; |
|
4519 GLuint texture; |
|
4520 int width; |
|
4521 int height; |
|
4522 }; |
|
4523 |
|
4524 typedef QHash<glyph_t, QGLGlyphCoord*> QGLGlyphHash; |
|
4525 typedef QHash<QFontEngine*, QGLGlyphHash*> QGLFontGlyphHash; |
|
4526 typedef QHash<quint64, QGLFontTexture*> QGLFontTexHash; |
|
4527 typedef QHash<const QGLContext*, QGLFontGlyphHash*> QGLContextHash; |
|
4528 |
|
4529 class QGLGlyphCache : public QObject |
|
4530 { |
|
4531 Q_OBJECT |
|
4532 public: |
|
4533 QGLGlyphCache() : QObject(0) { current_cache = 0; } |
|
4534 ~QGLGlyphCache(); |
|
4535 QGLGlyphCoord *lookup(QFontEngine *, glyph_t); |
|
4536 void cacheGlyphs(QGLContext *, const QTextItemInt &, const QVarLengthArray<glyph_t> &); |
|
4537 void cleanCache(); |
|
4538 void allocTexture(int width, int height, GLuint texture); |
|
4539 |
|
4540 public slots: |
|
4541 void cleanupContext(const QGLContext *); |
|
4542 void fontEngineDestroyed(QObject *); |
|
4543 void widgetDestroyed(QObject *); |
|
4544 |
|
4545 protected: |
|
4546 QGLGlyphHash *current_cache; |
|
4547 QGLFontTexHash qt_font_textures; |
|
4548 QGLContextHash qt_context_cache; |
|
4549 }; |
|
4550 |
|
4551 QGLGlyphCache::~QGLGlyphCache() |
|
4552 { |
|
4553 // qDebug() << "cleaning out the QGLGlyphCache"; |
|
4554 cleanCache(); |
|
4555 } |
|
4556 |
|
4557 void QGLGlyphCache::fontEngineDestroyed(QObject *o) |
|
4558 { |
|
4559 // qDebug() << "fontEngineDestroyed()"; |
|
4560 QFontEngine *fe = static_cast<QFontEngine *>(o); // safe, since only the type is used |
|
4561 QList<const QGLContext *> keys = qt_context_cache.keys(); |
|
4562 const QGLContext *ctx = 0; |
|
4563 |
|
4564 for (int i=0; i < keys.size(); ++i) { |
|
4565 QGLFontGlyphHash *font_cache = qt_context_cache.value(keys.at(i)); |
|
4566 if (font_cache->find(fe) != font_cache->end()) { |
|
4567 ctx = keys.at(i); |
|
4568 QGLGlyphHash *cache = font_cache->take(fe); |
|
4569 delete cache; |
|
4570 break; |
|
4571 } |
|
4572 } |
|
4573 |
|
4574 quint64 font_key = (reinterpret_cast<quint64>(ctx) << 32) | reinterpret_cast<quint64>(fe); |
|
4575 QGLFontTexture *tex = qt_font_textures.take(font_key); |
|
4576 if (tex) { |
|
4577 #ifdef Q_WS_MAC |
|
4578 if ( |
|
4579 # ifndef QT_MAC_USE_COCOA |
|
4580 aglGetCurrentContext() != 0 |
|
4581 # else |
|
4582 qt_current_nsopengl_context() != 0 |
|
4583 # endif |
|
4584 ) |
|
4585 #endif |
|
4586 glDeleteTextures(1, &tex->texture); |
|
4587 delete tex; |
|
4588 } |
|
4589 } |
|
4590 |
|
4591 void QGLGlyphCache::widgetDestroyed(QObject *) |
|
4592 { |
|
4593 // qDebug() << "widget destroyed"; |
|
4594 cleanCache(); // ### |
|
4595 } |
|
4596 |
|
4597 void QGLGlyphCache::cleanupContext(const QGLContext *ctx) |
|
4598 { |
|
4599 // qDebug() << "==> cleaning for: " << hex << ctx; |
|
4600 QGLFontGlyphHash *font_cache = qt_context_cache.take(ctx); |
|
4601 |
|
4602 if (font_cache) { |
|
4603 QList<QFontEngine *> keys = font_cache->keys(); |
|
4604 for (int i=0; i < keys.size(); ++i) { |
|
4605 QFontEngine *fe = keys.at(i); |
|
4606 delete font_cache->take(fe); |
|
4607 quint64 font_key = (reinterpret_cast<quint64>(ctx) << 32) | reinterpret_cast<quint64>(fe); |
|
4608 QGLFontTexture *font_tex = qt_font_textures.take(font_key); |
|
4609 if (font_tex) { |
|
4610 #ifdef Q_WS_MAC |
|
4611 if ( |
|
4612 # ifndef QT_MAC_USE_COCOA |
|
4613 aglGetCurrentContext() == 0 |
|
4614 # else |
|
4615 qt_current_nsopengl_context() != 0 |
|
4616 # endif |
|
4617 ) |
|
4618 #endif |
|
4619 glDeleteTextures(1, &font_tex->texture); |
|
4620 delete font_tex; |
|
4621 } |
|
4622 } |
|
4623 delete font_cache; |
|
4624 } |
|
4625 // qDebug() << "<=== done cleaning, num tex:" << qt_font_textures.size() << "num ctx:" << qt_context_cache.size(); |
|
4626 } |
|
4627 |
|
4628 void QGLGlyphCache::cleanCache() |
|
4629 { |
|
4630 QGLFontTexHash::const_iterator it = qt_font_textures.constBegin(); |
|
4631 if (QGLContext::currentContext()) { |
|
4632 while (it != qt_font_textures.constEnd()) { |
|
4633 #if defined(Q_WS_MAC) && defined(QT_MAC_USE_COCOA) |
|
4634 if (qt_current_nsopengl_context() == 0) |
|
4635 break; |
|
4636 #endif |
|
4637 glDeleteTextures(1, &it.value()->texture); |
|
4638 ++it; |
|
4639 } |
|
4640 } |
|
4641 qDeleteAll(qt_font_textures); |
|
4642 qt_font_textures.clear(); |
|
4643 |
|
4644 QList<const QGLContext *> keys = qt_context_cache.keys(); |
|
4645 for (int i=0; i < keys.size(); ++i) { |
|
4646 QGLFontGlyphHash *font_cache = qt_context_cache.value(keys.at(i)); |
|
4647 qDeleteAll(*font_cache); |
|
4648 font_cache->clear(); |
|
4649 } |
|
4650 qDeleteAll(qt_context_cache); |
|
4651 qt_context_cache.clear(); |
|
4652 } |
|
4653 |
|
4654 void QGLGlyphCache::allocTexture(int width, int height, GLuint texture) |
|
4655 { |
|
4656 uchar *tex_data = (uchar *) malloc(width*height*2); |
|
4657 memset(tex_data, 0, width*height*2); |
|
4658 glBindTexture(GL_TEXTURE_2D, texture); |
|
4659 #ifndef QT_OPENGL_ES |
|
4660 glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE8_ALPHA8, |
|
4661 width, height, 0, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, tex_data); |
|
4662 #else |
|
4663 glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE_ALPHA, |
|
4664 width, height, 0, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, tex_data); |
|
4665 #endif |
|
4666 free(tex_data); |
|
4667 } |
|
4668 |
|
4669 #if 0 |
|
4670 // useful for debugging the glyph cache |
|
4671 static QImage getCurrentTexture(const QColor &color, QGLFontTexture *font_tex) |
|
4672 { |
|
4673 ushort *old_tex_data = (ushort *) malloc(font_tex->width*font_tex->height*2); |
|
4674 glGetTexImage(GL_TEXTURE_2D, 0, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, old_tex_data); |
|
4675 QImage im(font_tex->width, font_tex->height, QImage::Format_ARGB32); |
|
4676 for (int y=0; y<font_tex->height; ++y) { |
|
4677 for (int x=0; x<font_tex->width; ++x) { |
|
4678 im.setPixel(x, y, ((*(old_tex_data+x+y*font_tex->width)) << 24) | (0x00ffffff & color.rgb())); |
|
4679 } |
|
4680 } |
|
4681 delete old_tex_data; |
|
4682 return im; |
|
4683 } |
|
4684 #endif |
|
4685 |
|
4686 void QGLGlyphCache::cacheGlyphs(QGLContext *context, const QTextItemInt &ti, |
|
4687 const QVarLengthArray<glyph_t> &glyphs) |
|
4688 { |
|
4689 QGLContextHash::const_iterator dev_it = qt_context_cache.constFind(context); |
|
4690 QGLFontGlyphHash *font_cache = 0; |
|
4691 const QGLContext *context_key = 0; |
|
4692 |
|
4693 if (dev_it == qt_context_cache.constEnd()) { |
|
4694 // check for shared contexts |
|
4695 QList<const QGLContext *> contexts = qt_context_cache.keys(); |
|
4696 for (int i=0; i<contexts.size(); ++i) { |
|
4697 const QGLContext *ctx = contexts.at(i); |
|
4698 if (ctx != context && QGLContext::areSharing(context, ctx)) { |
|
4699 context_key = ctx; |
|
4700 dev_it = qt_context_cache.constFind(context_key); |
|
4701 break; |
|
4702 } |
|
4703 } |
|
4704 } |
|
4705 |
|
4706 if (dev_it == qt_context_cache.constEnd()) { |
|
4707 // no shared contexts either - create a new entry |
|
4708 font_cache = new QGLFontGlyphHash; |
|
4709 // qDebug() << "new context" << context << font_cache; |
|
4710 qt_context_cache.insert(context, font_cache); |
|
4711 if (context->isValid() && context->device()->devType() == QInternal::Widget) { |
|
4712 QWidget *widget = static_cast<QWidget *>(context->device()); |
|
4713 connect(widget, SIGNAL(destroyed(QObject*)), SLOT(widgetDestroyed(QObject*))); |
|
4714 connect(QGLSignalProxy::instance(), |
|
4715 SIGNAL(aboutToDestroyContext(const QGLContext *)), |
|
4716 SLOT(cleanupContext(const QGLContext *))); |
|
4717 } |
|
4718 } else { |
|
4719 font_cache = dev_it.value(); |
|
4720 } |
|
4721 Q_ASSERT(font_cache != 0); |
|
4722 |
|
4723 QGLFontGlyphHash::const_iterator cache_it = font_cache->constFind(ti.fontEngine); |
|
4724 QGLGlyphHash *cache = 0; |
|
4725 if (cache_it == font_cache->constEnd()) { |
|
4726 cache = new QGLGlyphHash; |
|
4727 font_cache->insert(ti.fontEngine, cache); |
|
4728 connect(ti.fontEngine, SIGNAL(destroyed(QObject*)), SLOT(fontEngineDestroyed(QObject*))); |
|
4729 } else { |
|
4730 cache = cache_it.value(); |
|
4731 } |
|
4732 current_cache = cache; |
|
4733 |
|
4734 quint64 font_key = (reinterpret_cast<quint64>(context_key ? context_key : context) << 32) |
|
4735 | reinterpret_cast<quint64>(ti.fontEngine); |
|
4736 QGLFontTexHash::const_iterator it = qt_font_textures.constFind(font_key); |
|
4737 QGLFontTexture *font_tex; |
|
4738 if (it == qt_font_textures.constEnd()) { |
|
4739 GLuint font_texture; |
|
4740 glGenTextures(1, &font_texture); |
|
4741 GLint tex_height = qt_next_power_of_two(qRound(ti.ascent.toReal() + ti.descent.toReal())+2); |
|
4742 GLint tex_width = qt_next_power_of_two(tex_height*30); // ### |
|
4743 GLint max_tex_size; |
|
4744 glGetIntegerv(GL_MAX_TEXTURE_SIZE, &max_tex_size); |
|
4745 Q_ASSERT(max_tex_size > 0); |
|
4746 if (tex_width > max_tex_size) |
|
4747 tex_width = max_tex_size; |
|
4748 allocTexture(tex_width, tex_height, font_texture); |
|
4749 font_tex = new QGLFontTexture; |
|
4750 font_tex->texture = font_texture; |
|
4751 font_tex->x_offset = x_margin; |
|
4752 font_tex->y_offset = y_margin; |
|
4753 font_tex->width = tex_width; |
|
4754 font_tex->height = tex_height; |
|
4755 // qDebug() << "new font tex - width:" << tex_width << "height:"<< tex_height |
|
4756 // << hex << "tex id:" << font_tex->texture << "key:" << font_key << "num cached:" << qt_font_textures.size(); |
|
4757 qt_font_textures.insert(font_key, font_tex); |
|
4758 } else { |
|
4759 font_tex = it.value(); |
|
4760 glBindTexture(GL_TEXTURE_2D, font_tex->texture); |
|
4761 } |
|
4762 |
|
4763 for (int i=0; i< glyphs.size(); ++i) { |
|
4764 QGLGlyphHash::const_iterator it = cache->constFind(glyphs[i]); |
|
4765 if (it == cache->constEnd()) { |
|
4766 // render new glyph and put it in the cache |
|
4767 glyph_metrics_t metrics = ti.fontEngine->boundingBox(glyphs[i]); |
|
4768 int glyph_width = qRound(metrics.width.toReal())+2; |
|
4769 int glyph_height = qRound(ti.ascent.toReal() + ti.descent.toReal())+2; |
|
4770 |
|
4771 if (font_tex->x_offset + glyph_width + x_margin > font_tex->width) { |
|
4772 int strip_height = qt_next_power_of_two(qRound(ti.ascent.toReal() + ti.descent.toReal())+2); |
|
4773 font_tex->x_offset = x_margin; |
|
4774 font_tex->y_offset += strip_height; |
|
4775 if (font_tex->y_offset >= font_tex->height) { |
|
4776 // get hold of the old font texture |
|
4777 uchar *old_tex_data = (uchar *) malloc(font_tex->width*font_tex->height*2); |
|
4778 int old_tex_height = font_tex->height; |
|
4779 #ifndef QT_OPENGL_ES |
|
4780 glGetTexImage(GL_TEXTURE_2D, 0, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, old_tex_data); |
|
4781 #endif |
|
4782 |
|
4783 // realloc a larger texture |
|
4784 glDeleteTextures(1, &font_tex->texture); |
|
4785 glGenTextures(1, &font_tex->texture); |
|
4786 font_tex->height = qt_next_power_of_two(font_tex->height + strip_height); |
|
4787 allocTexture(font_tex->width, font_tex->height, font_tex->texture); |
|
4788 |
|
4789 // write back the old texture data |
|
4790 glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, font_tex->width, old_tex_height, |
|
4791 GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, old_tex_data); |
|
4792 free(old_tex_data); |
|
4793 |
|
4794 // update the texture coords and the y offset for the existing glyphs in |
|
4795 // the cache, because of the texture size change |
|
4796 QGLGlyphHash::iterator it = cache->begin(); |
|
4797 while (it != cache->end()) { |
|
4798 it.value()->height = (it.value()->height * old_tex_height) / font_tex->height; |
|
4799 it.value()->y = (it.value()->y * old_tex_height) / font_tex->height; |
|
4800 ++it; |
|
4801 } |
|
4802 } |
|
4803 } |
|
4804 |
|
4805 QImage glyph_im(ti.fontEngine->alphaMapForGlyph(glyphs[i])); |
|
4806 glyph_im = glyph_im.convertToFormat(QImage::Format_Indexed8); |
|
4807 glyph_width = glyph_im.width(); |
|
4808 Q_ASSERT(glyph_width >= 0); |
|
4809 // pad the glyph width to an even number |
|
4810 if (glyph_width%2 != 0) |
|
4811 ++glyph_width; |
|
4812 |
|
4813 QGLGlyphCoord *qgl_glyph = new QGLGlyphCoord; |
|
4814 qgl_glyph->x = qreal(font_tex->x_offset) / font_tex->width; |
|
4815 qgl_glyph->y = qreal(font_tex->y_offset) / font_tex->height; |
|
4816 qgl_glyph->width = qreal(glyph_width) / font_tex->width; |
|
4817 qgl_glyph->height = qreal(glyph_height) / font_tex->height; |
|
4818 qgl_glyph->log_width = qreal(glyph_width); |
|
4819 qgl_glyph->log_height = qgl_glyph->height * font_tex->height; |
|
4820 #ifdef Q_WS_MAC |
|
4821 qgl_glyph->x_offset = -metrics.x + 1; |
|
4822 qgl_glyph->y_offset = metrics.y - 2; |
|
4823 #else |
|
4824 qgl_glyph->x_offset = -metrics.x; |
|
4825 qgl_glyph->y_offset = metrics.y; |
|
4826 #endif |
|
4827 |
|
4828 if (!glyph_im.isNull()) { |
|
4829 |
|
4830 int idx = 0; |
|
4831 uchar *tex_data = (uchar *) malloc(glyph_width*glyph_im.height()*2); |
|
4832 memset(tex_data, 0, glyph_width*glyph_im.height()*2); |
|
4833 |
|
4834 for (int y=0; y<glyph_im.height(); ++y) { |
|
4835 uchar *s = (uchar *) glyph_im.scanLine(y); |
|
4836 for (int x=0; x<glyph_im.width(); ++x) { |
|
4837 uchar alpha = qAlpha(glyph_im.color(*s)); |
|
4838 tex_data[idx] = alpha; |
|
4839 tex_data[idx+1] = alpha; |
|
4840 ++s; |
|
4841 idx += 2; |
|
4842 } |
|
4843 if (glyph_im.width()%2 != 0) |
|
4844 idx += 2; |
|
4845 } |
|
4846 glTexSubImage2D(GL_TEXTURE_2D, 0, font_tex->x_offset, font_tex->y_offset, |
|
4847 glyph_width, glyph_im.height(), |
|
4848 GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, tex_data); |
|
4849 free(tex_data); |
|
4850 } |
|
4851 if (font_tex->x_offset + glyph_width + x_margin > font_tex->width) { |
|
4852 font_tex->x_offset = x_margin; |
|
4853 font_tex->y_offset += glyph_height + y_margin; |
|
4854 } else { |
|
4855 font_tex->x_offset += glyph_width + x_margin; |
|
4856 } |
|
4857 |
|
4858 cache->insert(glyphs[i], qgl_glyph); |
|
4859 } |
|
4860 } |
|
4861 } |
|
4862 |
|
4863 QGLGlyphCoord *QGLGlyphCache::lookup(QFontEngine *, glyph_t g) |
|
4864 { |
|
4865 Q_ASSERT(current_cache != 0); |
|
4866 // ### careful here |
|
4867 QGLGlyphHash::const_iterator it = current_cache->constFind(g); |
|
4868 if (it == current_cache->constEnd()) |
|
4869 return 0; |
|
4870 else |
|
4871 return it.value(); |
|
4872 } |
|
4873 |
|
4874 Q_GLOBAL_STATIC(QGLGlyphCache, qt_glyph_cache) |
|
4875 |
|
4876 // |
|
4877 // assumption: the context that this is called for has to be the |
|
4878 // current context |
|
4879 // |
|
4880 void qgl_cleanup_glyph_cache(QGLContext *ctx) |
|
4881 { |
|
4882 qt_glyph_cache()->cleanupContext(ctx); |
|
4883 } |
|
4884 |
|
4885 void QOpenGLPaintEngine::drawTextItem(const QPointF &p, const QTextItem &textItem) |
|
4886 { |
|
4887 Q_D(QOpenGLPaintEngine); |
|
4888 |
|
4889 const QTextItemInt &ti = static_cast<const QTextItemInt &>(textItem); |
|
4890 |
|
4891 // fall back to drawing a polygon if the scale factor is large, or |
|
4892 // we use a gradient pen |
|
4893 if ((d->matrix.det() > 1) || (d->pen_brush_style >= Qt::LinearGradientPattern |
|
4894 && d->pen_brush_style <= Qt::ConicalGradientPattern)) { |
|
4895 QPaintEngine::drawTextItem(p, textItem); |
|
4896 return; |
|
4897 } |
|
4898 |
|
4899 d->flushDrawQueue(); |
|
4900 |
|
4901 // add the glyphs used to the glyph texture cache |
|
4902 QVarLengthArray<QFixedPoint> positions; |
|
4903 QVarLengthArray<glyph_t> glyphs; |
|
4904 QTransform matrix = QTransform::fromTranslate(qRound(p.x()), qRound(p.y())); |
|
4905 ti.fontEngine->getGlyphPositions(ti.glyphs, matrix, ti.flags, glyphs, positions); |
|
4906 |
|
4907 // make sure the glyphs we want to draw are in the cache |
|
4908 qt_glyph_cache()->cacheGlyphs(d->device->context(), ti, glyphs); |
|
4909 |
|
4910 d->setGradientOps(Qt::SolidPattern, QRectF()); // turns off gradient ops |
|
4911 qt_glColor4ubv(d->pen_color); |
|
4912 glEnable(GL_TEXTURE_2D); |
|
4913 |
|
4914 #ifdef Q_WS_QWS |
|
4915 // XXX: it is necessary to disable alpha writes on GLES/embedded because we don't want |
|
4916 // text rendering to update the alpha in the window surface. |
|
4917 // XXX: This may not be needed as this behavior does seem to be caused by driver bug |
|
4918 glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_FALSE); |
|
4919 #endif |
|
4920 |
|
4921 // do the actual drawing |
|
4922 q_vertexType vertexArray[4*2]; |
|
4923 q_vertexType texCoordArray[4*2]; |
|
4924 |
|
4925 glVertexPointer(2, q_vertexTypeEnum, 0, vertexArray); |
|
4926 glTexCoordPointer(2, q_vertexTypeEnum, 0, texCoordArray); |
|
4927 |
|
4928 glEnableClientState(GL_VERTEX_ARRAY); |
|
4929 glEnableClientState(GL_TEXTURE_COORD_ARRAY); |
|
4930 bool antialias = !(ti.fontEngine->fontDef.styleStrategy & QFont::NoAntialias); |
|
4931 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, antialias ? GL_LINEAR : GL_NEAREST); |
|
4932 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, antialias ? GL_LINEAR : GL_NEAREST); |
|
4933 |
|
4934 for (int i=0; i< glyphs.size(); ++i) { |
|
4935 QGLGlyphCoord *g = qt_glyph_cache()->lookup(ti.fontEngine, glyphs[i]); |
|
4936 |
|
4937 // we don't cache glyphs with no width/height |
|
4938 if (!g) |
|
4939 continue; |
|
4940 |
|
4941 qreal x1, x2, y1, y2; |
|
4942 x1 = g->x; |
|
4943 y1 = g->y; |
|
4944 x2 = x1 + g->width; |
|
4945 y2 = y1 + g->height; |
|
4946 |
|
4947 QPointF logical_pos((positions[i].x - g->x_offset).toReal(), |
|
4948 (positions[i].y + g->y_offset).toReal()); |
|
4949 |
|
4950 qt_add_rect_to_array(QRectF(logical_pos, QSizeF(g->log_width, g->log_height)), vertexArray); |
|
4951 qt_add_texcoords_to_array(x1, y1, x2, y2, texCoordArray); |
|
4952 |
|
4953 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); |
|
4954 } |
|
4955 |
|
4956 glDisableClientState(GL_TEXTURE_COORD_ARRAY); |
|
4957 glDisableClientState(GL_VERTEX_ARRAY); |
|
4958 |
|
4959 glDisable(GL_TEXTURE_2D); |
|
4960 |
|
4961 #ifdef Q_WS_QWS |
|
4962 // XXX: This may not be needed as this behavior does seem to be caused by driver bug |
|
4963 glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE); |
|
4964 #endif |
|
4965 } |
|
4966 |
|
4967 |
|
4968 void QOpenGLPaintEngine::drawEllipse(const QRectF &rect) |
|
4969 { |
|
4970 #ifndef Q_WS_QWS |
|
4971 Q_D(QOpenGLPaintEngine); |
|
4972 |
|
4973 if (d->use_emulation) { |
|
4974 QPaintEngineEx::drawEllipse(rect); |
|
4975 return; |
|
4976 } |
|
4977 |
|
4978 if (d->high_quality_antialiasing) { |
|
4979 if (d->has_brush) { |
|
4980 d->disableClipping(); |
|
4981 |
|
4982 glMatrixMode(GL_MODELVIEW); |
|
4983 glPushMatrix(); |
|
4984 glLoadIdentity(); |
|
4985 |
|
4986 GLuint program = qt_gl_program_cache()->getProgram(d->device->context(), |
|
4987 FRAGMENT_PROGRAM_MASK_ELLIPSE_AA, 0, true); |
|
4988 QGLEllipseMaskGenerator maskGenerator(rect, |
|
4989 d->matrix, |
|
4990 d->offscreen, |
|
4991 program, |
|
4992 mask_variable_locations[FRAGMENT_PROGRAM_MASK_ELLIPSE_AA]); |
|
4993 |
|
4994 d->addItem(qt_mask_texture_cache()->getMask(maskGenerator, d)); |
|
4995 |
|
4996 d->enableClipping(); |
|
4997 |
|
4998 glMatrixMode(GL_MODELVIEW); |
|
4999 glPopMatrix(); |
|
5000 } |
|
5001 |
|
5002 if (d->has_pen) { |
|
5003 QPainterPath path; |
|
5004 path.addEllipse(rect); |
|
5005 |
|
5006 d->strokePath(path, false); |
|
5007 } |
|
5008 } else { |
|
5009 DEBUG_ONCE_STR("QOpenGLPaintEngine::drawEllipse(): falling back to drawPath()"); |
|
5010 |
|
5011 QPainterPath path; |
|
5012 path.addEllipse(rect); |
|
5013 drawPath(path); |
|
5014 } |
|
5015 #else |
|
5016 QPaintEngineEx::drawEllipse(rect); |
|
5017 #endif |
|
5018 } |
|
5019 |
|
5020 |
|
5021 void QOpenGLPaintEnginePrivate::updateFragmentProgramData(int locations[]) |
|
5022 { |
|
5023 #ifdef Q_WS_QWS |
|
5024 Q_UNUSED(locations); |
|
5025 #else |
|
5026 QGL_FUNC_CONTEXT; |
|
5027 |
|
5028 QSize sz = offscreen.offscreenSize(); |
|
5029 |
|
5030 float inv_mask_size_data[4] = { 1.0f / sz.width(), 1.0f / sz.height(), 0.0f, 0.0f }; |
|
5031 |
|
5032 sz = drawable_texture_size; |
|
5033 |
|
5034 float inv_dst_size_data[4] = { 1.0f / sz.width(), 1.0f / sz.height(), 0.0f, 0.0f }; |
|
5035 |
|
5036 // default inv size 0.125f == 1.0f / 8.0f for pattern brushes |
|
5037 float inv_brush_texture_size_data[4] = { 0.125f, 0.125f }; |
|
5038 |
|
5039 // texture patterns have their own size |
|
5040 if (current_style == Qt::TexturePattern) { |
|
5041 QSize sz = cbrush.texture().size(); |
|
5042 |
|
5043 inv_brush_texture_size_data[0] = 1.0f / sz.width(); |
|
5044 inv_brush_texture_size_data[1] = 1.0f / sz.height(); |
|
5045 } |
|
5046 |
|
5047 for (unsigned int i = 0; i < num_fragment_variables; ++i) { |
|
5048 int location = locations[i]; |
|
5049 |
|
5050 if (location < 0) |
|
5051 continue; |
|
5052 |
|
5053 switch (i) { |
|
5054 case VAR_ANGLE: |
|
5055 glProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, location, angle_data); |
|
5056 break; |
|
5057 case VAR_LINEAR: |
|
5058 glProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, location, linear_data); |
|
5059 break; |
|
5060 case VAR_FMP: |
|
5061 glProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, location, fmp_data); |
|
5062 break; |
|
5063 case VAR_FMP2_M_RADIUS2: |
|
5064 glProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, location, fmp2_m_radius2_data); |
|
5065 break; |
|
5066 case VAR_INV_MASK_SIZE: |
|
5067 glProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, location, inv_mask_size_data); |
|
5068 break; |
|
5069 case VAR_INV_DST_SIZE: |
|
5070 glProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, location, inv_dst_size_data); |
|
5071 break; |
|
5072 case VAR_INV_MATRIX_M0: |
|
5073 glProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, location, inv_matrix_data[0]); |
|
5074 break; |
|
5075 case VAR_INV_MATRIX_M1: |
|
5076 glProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, location, inv_matrix_data[1]); |
|
5077 break; |
|
5078 case VAR_INV_MATRIX_M2: |
|
5079 glProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, location, inv_matrix_data[2]); |
|
5080 break; |
|
5081 case VAR_PORTERDUFF_AB: |
|
5082 glProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, location, porterduff_ab_data); |
|
5083 break; |
|
5084 case VAR_PORTERDUFF_XYZ: |
|
5085 glProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, location, porterduff_xyz_data); |
|
5086 break; |
|
5087 case VAR_INV_BRUSH_TEXTURE_SIZE: |
|
5088 glProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, location, inv_brush_texture_size_data); |
|
5089 break; |
|
5090 case VAR_MASK_OFFSET: |
|
5091 glProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, location, mask_offset_data); |
|
5092 break; |
|
5093 case VAR_MASK_CHANNEL: |
|
5094 glProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, location, mask_channel_data); |
|
5095 break; |
|
5096 case VAR_DST_TEXTURE: |
|
5097 case VAR_MASK_TEXTURE: |
|
5098 case VAR_PALETTE: |
|
5099 case VAR_BRUSH_TEXTURE: |
|
5100 // texture variables, not handled here |
|
5101 break; |
|
5102 default: |
|
5103 qDebug() << "QOpenGLPaintEnginePrivate: Unhandled fragment variable:" << i; |
|
5104 } |
|
5105 } |
|
5106 #endif |
|
5107 } |
|
5108 |
|
5109 |
|
5110 void QOpenGLPaintEnginePrivate::copyDrawable(const QRectF &rect) |
|
5111 { |
|
5112 #ifdef Q_WS_QWS |
|
5113 Q_UNUSED(rect); |
|
5114 #else |
|
5115 ensureDrawableTexture(); |
|
5116 |
|
5117 DEBUG_ONCE qDebug() << "Refreshing drawable_texture for rectangle" << rect; |
|
5118 QRectF screen_rect = rect.adjusted(-1, -1, 1, 1); |
|
5119 |
|
5120 int left = qMax(0, static_cast<int>(screen_rect.left())); |
|
5121 int width = qMin(device->size().width() - left, static_cast<int>(screen_rect.width()) + 1); |
|
5122 |
|
5123 int bottom = qMax(0, static_cast<int>(device->size().height() - screen_rect.bottom())); |
|
5124 int height = qMin(device->size().height() - bottom, static_cast<int>(screen_rect.height()) + 1); |
|
5125 |
|
5126 glBindTexture(GL_TEXTURE_2D, drawable_texture); |
|
5127 glCopyTexSubImage2D(GL_TEXTURE_2D, 0, left, bottom, left, bottom, width, height); |
|
5128 #endif |
|
5129 } |
|
5130 |
|
5131 |
|
5132 void QOpenGLPaintEnginePrivate::composite(const QRectF &rect, const QPoint &maskOffset) |
|
5133 { |
|
5134 #ifdef Q_WS_QWS |
|
5135 Q_UNUSED(rect); |
|
5136 Q_UNUSED(maskOffset); |
|
5137 #else |
|
5138 q_vertexType vertexArray[8]; |
|
5139 qt_add_rect_to_array(rect, vertexArray); |
|
5140 |
|
5141 composite(GL_TRIANGLE_FAN, vertexArray, 4, maskOffset); |
|
5142 #endif |
|
5143 } |
|
5144 |
|
5145 |
|
5146 void QOpenGLPaintEnginePrivate::composite(GLuint primitive, const q_vertexType *vertexArray, int vertexCount, const QPoint &maskOffset) |
|
5147 { |
|
5148 #ifdef QT_OPENGL_ES |
|
5149 Q_UNUSED(primitive); |
|
5150 Q_UNUSED(vertexArray); |
|
5151 Q_UNUSED(vertexCount); |
|
5152 Q_UNUSED(maskOffset); |
|
5153 #else |
|
5154 Q_Q(QOpenGLPaintEngine); |
|
5155 QGL_FUNC_CONTEXT; |
|
5156 |
|
5157 if (current_style == Qt::NoBrush) |
|
5158 return; |
|
5159 |
|
5160 DEBUG_ONCE qDebug() << "QOpenGLPaintEnginePrivate: Using compositing program: fragment_brush =" |
|
5161 << fragment_brush << ", fragment_composition_mode =" << fragment_composition_mode; |
|
5162 |
|
5163 if (has_fast_composition_mode) |
|
5164 q->updateCompositionMode(composition_mode); |
|
5165 else { |
|
5166 qreal minX = 1e9, minY = 1e9, maxX = -1e9, maxY = -1e9; |
|
5167 |
|
5168 for (int i = 0; i < vertexCount; ++i) { |
|
5169 qreal x = vt2f(vertexArray[2 * i]); |
|
5170 qreal y = vt2f(vertexArray[2 * i + 1]); |
|
5171 |
|
5172 qreal tx, ty; |
|
5173 matrix.map(x, y, &tx, &ty); |
|
5174 |
|
5175 minX = qMin(minX, tx); |
|
5176 minY = qMin(minY, ty); |
|
5177 maxX = qMax(maxX, tx); |
|
5178 maxY = qMax(maxY, ty); |
|
5179 } |
|
5180 |
|
5181 QRectF r(minX, minY, maxX - minX, maxY - minY); |
|
5182 copyDrawable(r); |
|
5183 |
|
5184 glBlendFunc(GL_ONE, GL_ZERO); |
|
5185 } |
|
5186 |
|
5187 int *locations = painter_variable_locations[fragment_brush][fragment_composition_mode]; |
|
5188 |
|
5189 int texture_locations[] = { locations[VAR_DST_TEXTURE], |
|
5190 locations[VAR_MASK_TEXTURE], |
|
5191 locations[VAR_PALETTE] }; |
|
5192 |
|
5193 int brush_texture_location = locations[VAR_BRUSH_TEXTURE]; |
|
5194 |
|
5195 GLuint texture_targets[] = { GL_TEXTURE_2D, |
|
5196 GL_TEXTURE_2D, |
|
5197 GL_TEXTURE_1D }; |
|
5198 |
|
5199 GLuint textures[] = { drawable_texture, |
|
5200 offscreen.offscreenTexture(), |
|
5201 grad_palette }; |
|
5202 |
|
5203 const int num_textures = sizeof(textures) / sizeof(*textures); |
|
5204 |
|
5205 Q_ASSERT(num_textures == sizeof(texture_locations) / sizeof(*texture_locations)); |
|
5206 Q_ASSERT(num_textures == sizeof(texture_targets) / sizeof(*texture_targets)); |
|
5207 |
|
5208 for (int i = 0; i < num_textures; ++i) |
|
5209 if (texture_locations[i] >= 0) { |
|
5210 glActiveTexture(GL_TEXTURE0 + texture_locations[i]); |
|
5211 glBindTexture(texture_targets[i], textures[i]); |
|
5212 } |
|
5213 |
|
5214 if (brush_texture_location >= 0) { |
|
5215 glActiveTexture(GL_TEXTURE0 + brush_texture_location); |
|
5216 |
|
5217 if (current_style == Qt::TexturePattern) |
|
5218 device->context()->d_func()->bindTexture(cbrush.textureImage(), GL_TEXTURE_2D, GL_RGBA, |
|
5219 QGLContext::InternalBindOption); |
|
5220 else |
|
5221 device->context()->d_func()->bindTexture(qt_imageForBrush(current_style, false), |
|
5222 GL_TEXTURE_2D, GL_RGBA, |
|
5223 QGLContext::InternalBindOption); |
|
5224 |
|
5225 updateTextureFilter(GL_TEXTURE_2D, GL_REPEAT, use_smooth_pixmap_transform); |
|
5226 } |
|
5227 |
|
5228 glEnableClientState(GL_VERTEX_ARRAY); |
|
5229 glVertexPointer(2, q_vertexTypeEnum, 0, vertexArray); |
|
5230 glEnable(GL_FRAGMENT_PROGRAM_ARB); |
|
5231 GLuint program = qt_gl_program_cache()->getProgram(device->context(), |
|
5232 fragment_brush, |
|
5233 fragment_composition_mode, false); |
|
5234 glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, program); |
|
5235 |
|
5236 mask_offset_data[0] = maskOffset.x(); |
|
5237 mask_offset_data[1] = -maskOffset.y(); |
|
5238 |
|
5239 updateFragmentProgramData(locations); |
|
5240 |
|
5241 glDrawArrays(primitive, 0, vertexCount); |
|
5242 |
|
5243 glDisable(GL_FRAGMENT_PROGRAM_ARB); |
|
5244 glDisableClientState(GL_VERTEX_ARRAY); |
|
5245 |
|
5246 for (int i = 0; i < num_textures; ++i) |
|
5247 if (texture_locations[i] >= 0) { |
|
5248 glActiveTexture(GL_TEXTURE0 + texture_locations[i]); |
|
5249 glBindTexture(texture_targets[i], 0); |
|
5250 } |
|
5251 |
|
5252 if (brush_texture_location >= 0) { |
|
5253 glActiveTexture(GL_TEXTURE0 + brush_texture_location); |
|
5254 glBindTexture(GL_TEXTURE_2D, 0); |
|
5255 } |
|
5256 |
|
5257 glActiveTexture(GL_TEXTURE0); |
|
5258 |
|
5259 if (!has_fast_composition_mode) |
|
5260 q->updateCompositionMode(composition_mode); |
|
5261 #endif |
|
5262 } |
|
5263 |
|
5264 void QOpenGLPaintEnginePrivate::cacheItemErased(int channel, const QRect &rect) |
|
5265 { |
|
5266 bool isInDrawQueue = false; |
|
5267 |
|
5268 foreach (const QDrawQueueItem &item, drawQueue) { |
|
5269 if (item.location.channel == channel && item.location.rect == rect) { |
|
5270 isInDrawQueue = true; |
|
5271 break; |
|
5272 } |
|
5273 } |
|
5274 |
|
5275 if (isInDrawQueue) |
|
5276 flushDrawQueue(); |
|
5277 } |
|
5278 |
|
5279 void QOpenGLPaintEnginePrivate::addItem(const QGLMaskTextureCache::CacheLocation &location) |
|
5280 { |
|
5281 drawQueue << QDrawQueueItem(opacity, cbrush, brush_origin, composition_mode, matrix, location); |
|
5282 } |
|
5283 |
|
5284 void QOpenGLPaintEnginePrivate::drawItem(const QDrawQueueItem &item) |
|
5285 { |
|
5286 Q_Q(QOpenGLPaintEngine); |
|
5287 |
|
5288 opacity = item.opacity; |
|
5289 brush_origin = item.brush_origin; |
|
5290 q->updateCompositionMode(item.composition_mode); |
|
5291 matrix = item.matrix; |
|
5292 cbrush = item.brush; |
|
5293 brush_style = item.brush.style(); |
|
5294 |
|
5295 mask_channel_data[0] = item.location.channel == 0; |
|
5296 mask_channel_data[1] = item.location.channel == 1; |
|
5297 mask_channel_data[2] = item.location.channel == 2; |
|
5298 mask_channel_data[3] = item.location.channel == 3; |
|
5299 |
|
5300 setGradientOps(item.brush, item.location.screen_rect); |
|
5301 |
|
5302 composite(item.location.screen_rect, item.location.rect.topLeft() - item.location.screen_rect.topLeft() |
|
5303 - QPoint(0, offscreen.offscreenSize().height() - device->size().height())); |
|
5304 } |
|
5305 |
|
5306 void QOpenGLPaintEnginePrivate::flushDrawQueue() |
|
5307 { |
|
5308 #ifndef QT_OPENGL_ES |
|
5309 Q_Q(QOpenGLPaintEngine); |
|
5310 |
|
5311 offscreen.release(); |
|
5312 |
|
5313 if (!drawQueue.isEmpty()) { |
|
5314 DEBUG_ONCE qDebug() << "QOpenGLPaintEngine::flushDrawQueue():" << drawQueue.size() << "items"; |
|
5315 |
|
5316 glPushMatrix(); |
|
5317 glLoadIdentity(); |
|
5318 qreal old_opacity = opacity; |
|
5319 QPointF old_brush_origin = brush_origin; |
|
5320 QPainter::CompositionMode old_composition_mode = composition_mode; |
|
5321 QTransform old_matrix = matrix; |
|
5322 QBrush old_brush = cbrush; |
|
5323 |
|
5324 bool hqaa_old = high_quality_antialiasing; |
|
5325 |
|
5326 high_quality_antialiasing = true; |
|
5327 |
|
5328 foreach (const QDrawQueueItem &item, drawQueue) |
|
5329 drawItem(item); |
|
5330 |
|
5331 opacity = old_opacity; |
|
5332 brush_origin = old_brush_origin; |
|
5333 q->updateCompositionMode(old_composition_mode); |
|
5334 matrix = old_matrix; |
|
5335 cbrush = old_brush; |
|
5336 brush_style = old_brush.style(); |
|
5337 |
|
5338 high_quality_antialiasing = hqaa_old; |
|
5339 |
|
5340 setGLBrush(old_brush.color()); |
|
5341 qt_glColor4ubv(brush_color); |
|
5342 |
|
5343 drawQueue.clear(); |
|
5344 |
|
5345 glPopMatrix(); |
|
5346 } |
|
5347 #endif |
|
5348 } |
|
5349 |
|
5350 void QOpenGLPaintEngine::clipEnabledChanged() |
|
5351 { |
|
5352 Q_D(QOpenGLPaintEngine); |
|
5353 |
|
5354 d->updateDepthClip(); |
|
5355 } |
|
5356 |
|
5357 void QOpenGLPaintEngine::penChanged() |
|
5358 { |
|
5359 updatePen(state()->pen); |
|
5360 } |
|
5361 |
|
5362 void QOpenGLPaintEngine::brushChanged() |
|
5363 { |
|
5364 updateBrush(state()->brush, state()->brushOrigin); |
|
5365 } |
|
5366 |
|
5367 void QOpenGLPaintEngine::brushOriginChanged() |
|
5368 { |
|
5369 updateBrush(state()->brush, state()->brushOrigin); |
|
5370 } |
|
5371 |
|
5372 void QOpenGLPaintEngine::opacityChanged() |
|
5373 { |
|
5374 Q_D(QOpenGLPaintEngine); |
|
5375 QPainterState *s = state(); |
|
5376 d->opacity = s->opacity; |
|
5377 updateBrush(s->brush, s->brushOrigin); |
|
5378 updatePen(s->pen); |
|
5379 } |
|
5380 |
|
5381 void QOpenGLPaintEngine::compositionModeChanged() |
|
5382 { |
|
5383 updateCompositionMode(state()->composition_mode); |
|
5384 } |
|
5385 |
|
5386 void QOpenGLPaintEngine::renderHintsChanged() |
|
5387 { |
|
5388 updateRenderHints(state()->renderHints); |
|
5389 } |
|
5390 |
|
5391 void QOpenGLPaintEngine::transformChanged() |
|
5392 { |
|
5393 updateMatrix(state()->matrix); |
|
5394 } |
|
5395 |
|
5396 static QPainterPath painterPathFromVectorPath(const QVectorPath &path) |
|
5397 { |
|
5398 const qreal *points = path.points(); |
|
5399 const QPainterPath::ElementType *types = path.elements(); |
|
5400 |
|
5401 QPainterPath p; |
|
5402 if (types) { |
|
5403 int id = 0; |
|
5404 for (int i=0; i<path.elementCount(); ++i) { |
|
5405 switch(types[i]) { |
|
5406 case QPainterPath::MoveToElement: |
|
5407 p.moveTo(QPointF(points[id], points[id+1])); |
|
5408 id+=2; |
|
5409 break; |
|
5410 case QPainterPath::LineToElement: |
|
5411 p.lineTo(QPointF(points[id], points[id+1])); |
|
5412 id+=2; |
|
5413 break; |
|
5414 case QPainterPath::CurveToElement: { |
|
5415 QPointF p1(points[id], points[id+1]); |
|
5416 QPointF p2(points[id+2], points[id+3]); |
|
5417 QPointF p3(points[id+4], points[id+5]); |
|
5418 p.cubicTo(p1, p2, p3); |
|
5419 id+=6; |
|
5420 break; |
|
5421 } |
|
5422 case QPainterPath::CurveToDataElement: |
|
5423 ; |
|
5424 break; |
|
5425 } |
|
5426 } |
|
5427 } else { |
|
5428 p.moveTo(QPointF(points[0], points[1])); |
|
5429 int id = 2; |
|
5430 for (int i=1; i<path.elementCount(); ++i) { |
|
5431 p.lineTo(QPointF(points[id], points[id+1])); |
|
5432 id+=2; |
|
5433 } |
|
5434 } |
|
5435 if (path.hints() & QVectorPath::WindingFill) |
|
5436 p.setFillRule(Qt::WindingFill); |
|
5437 |
|
5438 return p; |
|
5439 } |
|
5440 |
|
5441 void QOpenGLPaintEngine::fill(const QVectorPath &path, const QBrush &brush) |
|
5442 { |
|
5443 Q_D(QOpenGLPaintEngine); |
|
5444 |
|
5445 if (brush.style() == Qt::NoBrush) |
|
5446 return; |
|
5447 |
|
5448 if (!d->use_fragment_programs && needsEmulation(brush.style())) { |
|
5449 QPainter *p = painter(); |
|
5450 QBrush oldBrush = p->brush(); |
|
5451 p->setBrush(brush); |
|
5452 qt_draw_helper(p->d_ptr.data(), painterPathFromVectorPath(path), QPainterPrivate::FillDraw); |
|
5453 p->setBrush(oldBrush); |
|
5454 return; |
|
5455 } |
|
5456 |
|
5457 QBrush old_brush = state()->brush; |
|
5458 updateBrush(brush, state()->brushOrigin); |
|
5459 |
|
5460 const qreal *points = path.points(); |
|
5461 const QPainterPath::ElementType *types = path.elements(); |
|
5462 if (!types && path.shape() == QVectorPath::RectangleHint) { |
|
5463 QRectF r(points[0], points[1], points[4]-points[0], points[5]-points[1]); |
|
5464 QPen old_pen = state()->pen; |
|
5465 updatePen(Qt::NoPen); |
|
5466 drawRects(&r, 1); |
|
5467 updatePen(old_pen); |
|
5468 } else { |
|
5469 d->fillPath(painterPathFromVectorPath(path)); |
|
5470 } |
|
5471 |
|
5472 updateBrush(old_brush, state()->brushOrigin); |
|
5473 } |
|
5474 |
|
5475 template <typename T> static inline bool isRect(const T *pts, int elementCount) { |
|
5476 return (elementCount == 5 // 5-point polygon, check for closed rect |
|
5477 && pts[0] == pts[8] && pts[1] == pts[9] // last point == first point |
|
5478 && pts[0] == pts[6] && pts[2] == pts[4] // x values equal |
|
5479 && pts[1] == pts[3] && pts[5] == pts[7] // y values equal... |
|
5480 ) || |
|
5481 (elementCount == 4 // 4-point polygon, check for unclosed rect |
|
5482 && pts[0] == pts[6] && pts[2] == pts[4] // x values equal |
|
5483 && pts[1] == pts[3] && pts[5] == pts[7] // y values equal... |
|
5484 ); |
|
5485 } |
|
5486 |
|
5487 void QOpenGLPaintEngine::clip(const QVectorPath &path, Qt::ClipOperation op) |
|
5488 { |
|
5489 const qreal *points = path.points(); |
|
5490 const QPainterPath::ElementType *types = path.elements(); |
|
5491 if (!types && path.shape() == QVectorPath::RectangleHint) { |
|
5492 QRectF r(points[0], points[1], points[4]-points[0], points[5]-points[1]); |
|
5493 updateClipRegion(QRegion(r.toRect()), op); |
|
5494 return; |
|
5495 } |
|
5496 |
|
5497 QPainterPath p; |
|
5498 if (types) { |
|
5499 int id = 0; |
|
5500 for (int i=0; i<path.elementCount(); ++i) { |
|
5501 switch(types[i]) { |
|
5502 case QPainterPath::MoveToElement: |
|
5503 p.moveTo(QPointF(points[id], points[id+1])); |
|
5504 id+=2; |
|
5505 break; |
|
5506 case QPainterPath::LineToElement: |
|
5507 p.lineTo(QPointF(points[id], points[id+1])); |
|
5508 id+=2; |
|
5509 break; |
|
5510 case QPainterPath::CurveToElement: { |
|
5511 QPointF p1(points[id], points[id+1]); |
|
5512 QPointF p2(points[id+2], points[id+3]); |
|
5513 QPointF p3(points[id+4], points[id+5]); |
|
5514 p.cubicTo(p1, p2, p3); |
|
5515 id+=6; |
|
5516 break; |
|
5517 } |
|
5518 case QPainterPath::CurveToDataElement: |
|
5519 ; |
|
5520 break; |
|
5521 } |
|
5522 } |
|
5523 } else if (!path.isEmpty()) { |
|
5524 p.moveTo(QPointF(points[0], points[1])); |
|
5525 int id = 2; |
|
5526 for (int i=1; i<path.elementCount(); ++i) { |
|
5527 p.lineTo(QPointF(points[id], points[id+1])); |
|
5528 id+=2; |
|
5529 } |
|
5530 } |
|
5531 if (path.hints() & QVectorPath::WindingFill) |
|
5532 p.setFillRule(Qt::WindingFill); |
|
5533 |
|
5534 updateClipRegion(QRegion(p.toFillPolygon().toPolygon(), p.fillRule()), op); |
|
5535 return; |
|
5536 } |
|
5537 |
|
5538 void QOpenGLPaintEngine::setState(QPainterState *s) |
|
5539 { |
|
5540 Q_D(QOpenGLPaintEngine); |
|
5541 QOpenGLPaintEngineState *new_state = static_cast<QOpenGLPaintEngineState *>(s); |
|
5542 QOpenGLPaintEngineState *old_state = state(); |
|
5543 |
|
5544 QPaintEngineEx::setState(s); |
|
5545 |
|
5546 // are we in a save() ? |
|
5547 if (s == d->last_created_state) { |
|
5548 d->last_created_state = 0; |
|
5549 return; |
|
5550 } |
|
5551 |
|
5552 if (isActive()) { |
|
5553 if (old_state->depthClipId != new_state->depthClipId) |
|
5554 d->updateDepthClip(); |
|
5555 penChanged(); |
|
5556 brushChanged(); |
|
5557 opacityChanged(); |
|
5558 compositionModeChanged(); |
|
5559 renderHintsChanged(); |
|
5560 transformChanged(); |
|
5561 } |
|
5562 } |
|
5563 |
|
5564 QPainterState *QOpenGLPaintEngine::createState(QPainterState *orig) const |
|
5565 { |
|
5566 const Q_D(QOpenGLPaintEngine); |
|
5567 |
|
5568 QOpenGLPaintEngineState *s; |
|
5569 if (!orig) |
|
5570 s = new QOpenGLPaintEngineState(); |
|
5571 else |
|
5572 s = new QOpenGLPaintEngineState(*static_cast<QOpenGLPaintEngineState *>(orig)); |
|
5573 |
|
5574 d->last_created_state = s; |
|
5575 return s; |
|
5576 } |
|
5577 |
|
5578 // |
|
5579 // QOpenGLPaintEngineState |
|
5580 // |
|
5581 |
|
5582 QOpenGLPaintEngineState::QOpenGLPaintEngineState(QOpenGLPaintEngineState &other) |
|
5583 : QPainterState(other) |
|
5584 { |
|
5585 clipRegion = other.clipRegion; |
|
5586 hasClipping = other.hasClipping; |
|
5587 fastClip = other.fastClip; |
|
5588 depthClipId = other.depthClipId; |
|
5589 } |
|
5590 |
|
5591 QOpenGLPaintEngineState::QOpenGLPaintEngineState() |
|
5592 { |
|
5593 hasClipping = false; |
|
5594 depthClipId = 0; |
|
5595 } |
|
5596 |
|
5597 QOpenGLPaintEngineState::~QOpenGLPaintEngineState() |
|
5598 { |
|
5599 } |
|
5600 |
|
5601 void QOpenGLPaintEnginePrivate::ensureDrawableTexture() |
|
5602 { |
|
5603 if (!dirty_drawable_texture) |
|
5604 return; |
|
5605 |
|
5606 dirty_drawable_texture = false; |
|
5607 |
|
5608 #ifndef QT_OPENGL_ES |
|
5609 glGenTextures(1, &drawable_texture); |
|
5610 glBindTexture(GL_TEXTURE_2D, drawable_texture); |
|
5611 |
|
5612 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, |
|
5613 drawable_texture_size.width(), |
|
5614 drawable_texture_size.height(), 0, |
|
5615 GL_RGBA, GL_UNSIGNED_BYTE, NULL); |
|
5616 |
|
5617 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
|
5618 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
|
5619 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); |
|
5620 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); |
|
5621 #endif |
|
5622 } |
|
5623 |
|
5624 QT_END_NAMESPACE |
|
5625 |
|
5626 #include "qpaintengine_opengl.moc" |