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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 <private/qgl_p.h> |
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43 #include <private/qegl_p.h> |
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44 #include <private/qeglproperties_p.h> |
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45 #include <private/qpaintengineex_opengl2_p.h> |
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46 |
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47 #include "qpixmapdata_x11gl_p.h" |
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48 |
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49 QT_BEGIN_NAMESPACE |
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50 |
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51 extern EGLConfig qt_chooseEGLConfigForPixmap(bool hasAlpha, bool readOnly); // in qgl_x11egl.cpp |
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52 extern bool qt_createEGLSurfaceForPixmap(QPixmapData* pmd, bool readOnly); // in qgl_x11egl.cpp |
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53 |
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54 // On 16bpp systems, RGB & ARGB pixmaps are different bit-depths and therefore need |
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55 // different contexts: |
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56 static EGLContext qPixmapARGBSharedEglContext = EGL_NO_CONTEXT; |
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57 static EGLContext qPixmapRGBSharedEglContext = EGL_NO_CONTEXT; |
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58 |
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59 bool QX11GLPixmapData::hasX11GLPixmaps() |
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60 { |
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61 static bool checkedForX11Pixmaps = false; |
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62 static bool haveX11Pixmaps = false; |
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63 |
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64 if (checkedForX11Pixmaps) |
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65 return haveX11Pixmaps; |
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66 |
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67 checkedForX11Pixmaps = true; |
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68 |
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69 QX11PixmapData *argbPixmapData = 0; |
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70 QX11PixmapData *rgbPixmapData = 0; |
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71 do { |
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72 if (qgetenv("QT_USE_X11GL_PIXMAPS").isEmpty()) |
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73 break; |
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74 |
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75 // Check we actually have EGL configs which support pixmaps |
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76 EGLConfig argbConfig = qt_chooseEGLConfigForPixmap(true, false); |
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77 EGLConfig rgbConfig = qt_chooseEGLConfigForPixmap(false, false); |
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78 |
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79 if (argbConfig == 0 || rgbConfig == 0) |
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80 break; |
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81 |
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82 // Create the shared contexts: |
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83 eglBindAPI(EGL_OPENGL_ES_API); |
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84 EGLint contextAttribs[] = { |
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85 #if defined(QT_OPENGL_ES_2) |
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86 EGL_CONTEXT_CLIENT_VERSION, 2, |
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87 #endif |
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88 EGL_NONE |
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89 }; |
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90 qPixmapARGBSharedEglContext = eglCreateContext(QEglContext::defaultDisplay(0), |
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91 argbConfig, 0, contextAttribs); |
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92 |
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93 if (argbConfig == rgbConfig) { |
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94 // If the configs are the same, we can re-use the same context. |
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95 qPixmapRGBSharedEglContext = qPixmapARGBSharedEglContext; |
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96 } else { |
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97 qPixmapRGBSharedEglContext = eglCreateContext(QEglContext::defaultDisplay(0), |
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98 rgbConfig, 0, contextAttribs); |
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99 } |
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100 |
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101 argbPixmapData = new QX11PixmapData(QPixmapData::PixmapType); |
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102 argbPixmapData->resize(100, 100); |
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103 argbPixmapData->fill(Qt::transparent); // Force ARGB |
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104 |
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105 if (!qt_createEGLSurfaceForPixmap(argbPixmapData, false)) |
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106 break; |
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107 |
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108 haveX11Pixmaps = eglMakeCurrent(QEglContext::defaultDisplay(0), |
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109 (EGLSurface)argbPixmapData->gl_surface, |
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110 (EGLSurface)argbPixmapData->gl_surface, |
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111 qPixmapARGBSharedEglContext); |
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112 if (!haveX11Pixmaps) { |
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113 EGLint err = eglGetError(); |
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114 qWarning() << "Unable to make pixmap config current:" << err << QEglContext::errorString(err); |
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115 break; |
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116 } |
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117 |
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118 // If the ARGB & RGB configs are the same, we don't need to check RGB too |
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119 if (haveX11Pixmaps && (argbConfig != rgbConfig)) { |
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120 rgbPixmapData = new QX11PixmapData(QPixmapData::PixmapType); |
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121 rgbPixmapData->resize(100, 100); |
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122 rgbPixmapData->fill(Qt::red); |
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123 |
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124 // Try to actually create an EGL pixmap surface |
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125 if (!qt_createEGLSurfaceForPixmap(rgbPixmapData, false)) |
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126 break; |
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127 |
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128 haveX11Pixmaps = eglMakeCurrent(QEglContext::defaultDisplay(0), |
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129 (EGLSurface)rgbPixmapData->gl_surface, |
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130 (EGLSurface)rgbPixmapData->gl_surface, |
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131 qPixmapRGBSharedEglContext); |
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132 if (!haveX11Pixmaps) { |
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133 EGLint err = eglGetError(); |
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134 qWarning() << "Unable to make pixmap config current:" << err << QEglContext::errorString(err); |
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135 break; |
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136 } |
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137 } |
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138 } while (0); |
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139 |
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140 if (qPixmapARGBSharedEglContext || qPixmapRGBSharedEglContext) { |
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141 eglMakeCurrent(QEglContext::defaultDisplay(0), |
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142 EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); |
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143 } |
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144 |
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145 if (argbPixmapData) { |
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146 if (argbPixmapData->gl_surface) |
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147 QGLContextPrivate::destroyGlSurfaceForPixmap(argbPixmapData); |
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148 delete argbPixmapData; |
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149 argbPixmapData = 0; |
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150 } |
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151 if (rgbPixmapData) { |
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152 if (rgbPixmapData->gl_surface) |
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153 QGLContextPrivate::destroyGlSurfaceForPixmap(rgbPixmapData); |
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154 delete rgbPixmapData; |
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155 rgbPixmapData = 0; |
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156 } |
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157 |
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158 if (!haveX11Pixmaps) { |
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159 // Clean up the context(s) if we can't use X11GL pixmaps |
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160 if (qPixmapARGBSharedEglContext != EGL_NO_CONTEXT) |
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161 eglDestroyContext(QEglContext::defaultDisplay(0), qPixmapARGBSharedEglContext); |
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162 |
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163 if (qPixmapRGBSharedEglContext != qPixmapARGBSharedEglContext && |
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164 qPixmapRGBSharedEglContext != EGL_NO_CONTEXT) |
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165 { |
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166 eglDestroyContext(QEglContext::defaultDisplay(0), qPixmapRGBSharedEglContext); |
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167 } |
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168 qPixmapRGBSharedEglContext = EGL_NO_CONTEXT; |
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169 qPixmapARGBSharedEglContext = EGL_NO_CONTEXT; |
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170 } |
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171 |
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172 if (haveX11Pixmaps) |
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173 qDebug("QX11GLPixmapData is supported"); |
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174 else |
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175 qDebug("QX11GLPixmapData is *NOT* being used"); |
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176 |
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177 return haveX11Pixmaps; |
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178 } |
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179 |
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180 QX11GLPixmapData::QX11GLPixmapData() |
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181 : QX11PixmapData(QPixmapData::PixmapType), |
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182 ctx(0) |
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183 { |
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184 } |
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185 |
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186 QX11GLPixmapData::~QX11GLPixmapData() |
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187 { |
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188 } |
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189 |
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190 static QGL2PaintEngineEx* qt_gl2_engine_for_pixmaps = 0; |
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191 |
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192 QPaintEngine* QX11GLPixmapData::paintEngine() const |
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193 { |
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194 // We need to create the context before beginPaint - do it here: |
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195 if (!ctx) { |
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196 ctx = new QGLContext(glFormat()); |
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197 if (ctx->d_func()->eglContext == 0) |
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198 ctx->d_func()->eglContext = new QEglContext(); |
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199 ctx->d_func()->eglContext->openDisplay(0); // ;-) |
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200 ctx->d_func()->eglContext->setApi(QEgl::OpenGL); |
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201 ctx->d_func()->eglContext->setContext(hasAlphaChannel() ? qPixmapARGBSharedEglContext |
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202 : qPixmapRGBSharedEglContext); |
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203 } |
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204 |
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205 if (!qt_gl2_engine_for_pixmaps) |
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206 qt_gl2_engine_for_pixmaps = new QGL2PaintEngineEx(); |
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207 |
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208 // Support multiple painters on multiple pixmaps simultaniously |
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209 if (qt_gl2_engine_for_pixmaps->isActive()) { |
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210 qWarning("Pixmap paint engine already active"); |
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211 QPaintEngine* engine = new QGL2PaintEngineEx(); |
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212 engine->setAutoDestruct(true); |
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213 return engine; |
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214 } |
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215 |
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216 return qt_gl2_engine_for_pixmaps; |
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217 } |
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218 |
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219 void QX11GLPixmapData::beginPaint() |
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220 { |
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221 // qDebug("QX11GLPixmapData::beginPaint()"); |
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222 if ((EGLSurface)gl_surface == EGL_NO_SURFACE) { |
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223 qt_createEGLSurfaceForPixmap(this, false); |
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224 ctx->d_func()->eglSurface = (EGLSurface)gl_surface; |
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225 ctx->d_func()->valid = true; // ;-) |
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226 } |
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227 QGLPaintDevice::beginPaint(); |
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228 } |
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229 |
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230 void QX11GLPixmapData::endPaint() |
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231 { |
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232 glFinish(); |
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233 QGLPaintDevice::endPaint(); |
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234 } |
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235 |
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236 QGLContext* QX11GLPixmapData::context() const |
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237 { |
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238 return ctx; |
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239 } |
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240 |
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241 QSize QX11GLPixmapData::size() const |
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242 { |
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243 return QSize(w, h); |
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244 } |
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245 |
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246 |
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247 QGLFormat QX11GLPixmapData::glFormat() |
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248 { |
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249 return QGLFormat::defaultFormat(); //### |
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250 } |
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251 |
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252 QT_END_NAMESPACE |