[556] | 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 ([email protected])
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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 | ** Commercial Usage
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| 11 | ** Licensees holding valid Qt Commercial licenses may use this file in
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| 12 | ** accordance with the Qt Commercial License Agreement provided with the
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| 13 | ** Software or, alternatively, in accordance with the terms contained in
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| 14 | ** a written agreement between you and Nokia.
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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 | ** GNU General Public License Usage
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| 29 | ** Alternatively, this file may be used under the terms of the GNU
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| 30 | ** General Public License version 3.0 as published by the Free Software
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| 31 | ** Foundation and appearing in the file LICENSE.GPL included in the
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| 32 | ** packaging of this file. Please review the following information to
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| 33 | ** ensure the GNU General Public License version 3.0 requirements will be
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| 34 | ** met: http://www.gnu.org/copyleft/gpl.html.
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| 35 | **
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| 36 | ** If you have questions regarding the use of this file, please contact
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| 37 | ** Nokia at [email protected].
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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
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