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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 QtGui 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 <QtCore/qdebug.h> |
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43 |
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44 #include <private/qt_x11_p.h> |
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45 #include <QtGui/qx11info_x11.h> |
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46 #include <private/qpixmapdata_p.h> |
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47 #include <private/qpixmap_x11_p.h> |
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48 |
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49 #include <QtGui/qpaintdevice.h> |
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50 #include <QtGui/qpixmap.h> |
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51 #include <QtGui/qwidget.h> |
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52 #include "qegl_p.h" |
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53 |
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54 |
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55 QT_BEGIN_NAMESPACE |
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56 |
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57 EGLSurface QEglContext::createSurface(QPaintDevice *device, const QEglProperties *properties) |
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58 { |
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59 // Create the native drawable for the paint device. |
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60 int devType = device->devType(); |
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61 EGLNativePixmapType pixmapDrawable = 0; |
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62 EGLNativeWindowType windowDrawable = 0; |
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63 bool ok; |
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64 if (devType == QInternal::Pixmap) { |
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65 pixmapDrawable = (EGLNativePixmapType)(static_cast<QPixmap *>(device))->handle(); |
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66 ok = (pixmapDrawable != 0); |
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67 } else if (devType == QInternal::Widget) { |
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68 windowDrawable = (EGLNativeWindowType)(static_cast<QWidget *>(device))->winId(); |
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69 ok = (windowDrawable != 0); |
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70 } else { |
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71 ok = false; |
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72 } |
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73 if (!ok) { |
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74 qWarning("QEglContext::createSurface(): Cannot create the native EGL drawable"); |
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75 return EGL_NO_SURFACE; |
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76 } |
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77 |
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78 // Create the EGL surface to draw into, based on the native drawable. |
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79 const int *props; |
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80 if (properties) |
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81 props = properties->properties(); |
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82 else |
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83 props = 0; |
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84 EGLSurface surf; |
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85 if (devType == QInternal::Widget) |
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86 surf = eglCreateWindowSurface(dpy, cfg, windowDrawable, props); |
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87 else |
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88 surf = eglCreatePixmapSurface(dpy, cfg, pixmapDrawable, props); |
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89 if (surf == EGL_NO_SURFACE) { |
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90 qWarning() << "QEglContext::createSurface(): Unable to create EGL surface:" |
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91 << errorString(eglGetError()); |
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92 } |
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93 return surf; |
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94 } |
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95 |
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96 EGLDisplay QEglContext::getDisplay(QPaintDevice *device) |
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97 { |
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98 Q_UNUSED(device); |
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99 Display *xdpy = QX11Info::display(); |
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100 if (!xdpy) { |
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101 qWarning("QEglContext::getDisplay(): X11 display is not open"); |
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102 return EGL_NO_DISPLAY; |
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103 } |
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104 return eglGetDisplay(EGLNativeDisplayType(xdpy)); |
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105 } |
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106 |
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107 static int countBits(unsigned long mask) |
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108 { |
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109 int count = 0; |
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110 while (mask != 0) { |
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111 if (mask & 1) |
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112 ++count; |
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113 mask >>= 1; |
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114 } |
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115 return count; |
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116 } |
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117 |
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118 // Set the pixel format parameters from the visual in "xinfo". |
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119 void QEglProperties::setVisualFormat(const QX11Info *xinfo) |
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120 { |
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121 if (!xinfo) |
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122 return; |
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123 Visual *visual = (Visual*)xinfo->visual(); |
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124 if (!visual) |
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125 return; |
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126 if (visual->c_class != TrueColor && visual->c_class != DirectColor) |
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127 return; |
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128 setValue(EGL_RED_SIZE, countBits(visual->red_mask)); |
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129 setValue(EGL_GREEN_SIZE, countBits(visual->green_mask)); |
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130 setValue(EGL_BLUE_SIZE, countBits(visual->blue_mask)); |
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131 |
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132 EGLint alphaBits = 0; |
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133 #if !defined(QT_NO_XRENDER) |
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134 XRenderPictFormat *format; |
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135 format = XRenderFindVisualFormat(xinfo->display(), visual); |
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136 if (format && (format->type == PictTypeDirect) && format->direct.alphaMask) { |
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137 alphaBits = countBits(format->direct.alphaMask); |
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138 qDebug("QEglProperties::setVisualFormat() - visual's alphaMask is %d", alphaBits); |
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139 } |
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140 #endif |
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141 setValue(EGL_ALPHA_SIZE, alphaBits); |
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142 } |
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143 |
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144 extern const QX11Info *qt_x11Info(const QPaintDevice *pd); |
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145 |
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146 // Set pixel format and other properties based on a paint device. |
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147 void QEglProperties::setPaintDeviceFormat(QPaintDevice *dev) |
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148 { |
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149 if (!dev) |
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150 return; |
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151 if (dev->devType() == QInternal::Image) |
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152 setPixelFormat(static_cast<QImage *>(dev)->format()); |
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153 else |
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154 setVisualFormat(qt_x11Info(dev)); |
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155 } |
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156 |
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157 QT_END_NAMESPACE |