source: trunk/src/opengl/qpixmapdata_x11gl_egl.cpp@ 636

Last change on this file since 636 was 561, checked in by Dmitry A. Kuminov, 15 years ago

trunk: Merged in qt 4.6.1 sources.
  • Property svn:eol-style set to native
File size: 8.9 KB
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1/****************************************************************************
2**
3** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
4** All rights reserved.
5** Contact: Nokia Corporation ([email protected])
6**
7** This file is part of the QtOpenGL module of the Qt Toolkit.
8**
9** $QT_BEGIN_LICENSE:LGPL$
10** Commercial Usage
11** Licensees holding valid Qt Commercial licenses may use this file in
12** accordance with the Qt Commercial License Agreement provided with the
13** Software or, alternatively, in accordance with the terms contained in
14** a written agreement between you and Nokia.
15**
16** GNU Lesser General Public License Usage
17** Alternatively, this file may be used under the terms of the GNU Lesser
18** General Public License version 2.1 as published by the Free Software
19** Foundation and appearing in the file LICENSE.LGPL included in the
20** packaging of this file. Please review the following information to
21** ensure the GNU Lesser General Public License version 2.1 requirements
22** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
23**
24** In addition, as a special exception, Nokia gives you certain additional
25** rights. These rights are described in the Nokia Qt LGPL Exception
26** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
27**
28** GNU General Public License Usage
29** Alternatively, this file may be used under the terms of the GNU
30** General Public License version 3.0 as published by the Free Software
31** Foundation and appearing in the file LICENSE.GPL included in the
32** packaging of this file. Please review the following information to
33** ensure the GNU General Public License version 3.0 requirements will be
34** met: http://www.gnu.org/copyleft/gpl.html.
35**
36** If you have questions regarding the use of this file, please contact
37** Nokia at [email protected].
38** $QT_END_LICENSE$
39**
40****************************************************************************/
41
42#include <private/qgl_p.h>
43#include <private/qegl_p.h>
44#include <private/qeglproperties_p.h>
45#include <private/qpaintengineex_opengl2_p.h>
46
47#include "qpixmapdata_x11gl_p.h"
48
49QT_BEGIN_NAMESPACE
50
51extern EGLConfig qt_chooseEGLConfigForPixmap(bool hasAlpha, bool readOnly); // in qgl_x11egl.cpp
52extern bool qt_createEGLSurfaceForPixmap(QPixmapData* pmd, bool readOnly); // in qgl_x11egl.cpp
53
54// On 16bpp systems, RGB & ARGB pixmaps are different bit-depths and therefore need
55// different contexts:
56static EGLContext qPixmapARGBSharedEglContext = EGL_NO_CONTEXT;
57static EGLContext qPixmapRGBSharedEglContext = EGL_NO_CONTEXT;
58
59bool QX11GLPixmapData::hasX11GLPixmaps()
60{
61 static bool checkedForX11Pixmaps = false;
62 static bool haveX11Pixmaps = false;
63
64 if (checkedForX11Pixmaps)
65 return haveX11Pixmaps;
66
67 checkedForX11Pixmaps = true;
68
69 QX11PixmapData *argbPixmapData = 0;
70 QX11PixmapData *rgbPixmapData = 0;
71 do {
72 if (qgetenv("QT_USE_X11GL_PIXMAPS").isEmpty())
73 break;
74
75 // Check we actually have EGL configs which support pixmaps
76 EGLConfig argbConfig = qt_chooseEGLConfigForPixmap(true, false);
77 EGLConfig rgbConfig = qt_chooseEGLConfigForPixmap(false, false);
78
79 if (argbConfig == 0 || rgbConfig == 0)
80 break;
81
82 // Create the shared contexts:
83 eglBindAPI(EGL_OPENGL_ES_API);
84 EGLint contextAttribs[] = {
85#if defined(QT_OPENGL_ES_2)
86 EGL_CONTEXT_CLIENT_VERSION, 2,
87#endif
88 EGL_NONE
89 };
90 qPixmapARGBSharedEglContext = eglCreateContext(QEglContext::defaultDisplay(0),
91 argbConfig, 0, contextAttribs);
92
93 if (argbConfig == rgbConfig) {
94 // If the configs are the same, we can re-use the same context.
95 qPixmapRGBSharedEglContext = qPixmapARGBSharedEglContext;
96 } else {
97 qPixmapRGBSharedEglContext = eglCreateContext(QEglContext::defaultDisplay(0),
98 rgbConfig, 0, contextAttribs);
99 }
100
101 argbPixmapData = new QX11PixmapData(QPixmapData::PixmapType);
102 argbPixmapData->resize(100, 100);
103 argbPixmapData->fill(Qt::transparent); // Force ARGB
104
105 if (!qt_createEGLSurfaceForPixmap(argbPixmapData, false))
106 break;
107
108 haveX11Pixmaps = eglMakeCurrent(QEglContext::defaultDisplay(0),
109 (EGLSurface)argbPixmapData->gl_surface,
110 (EGLSurface)argbPixmapData->gl_surface,
111 qPixmapARGBSharedEglContext);
112 if (!haveX11Pixmaps) {
113 EGLint err = eglGetError();
114 qWarning() << "Unable to make pixmap config current:" << err << QEglContext::errorString(err);
115 break;
116 }
117
118 // If the ARGB & RGB configs are the same, we don't need to check RGB too
119 if (haveX11Pixmaps && (argbConfig != rgbConfig)) {
120 rgbPixmapData = new QX11PixmapData(QPixmapData::PixmapType);
121 rgbPixmapData->resize(100, 100);
122 rgbPixmapData->fill(Qt::red);
123
124 // Try to actually create an EGL pixmap surface
125 if (!qt_createEGLSurfaceForPixmap(rgbPixmapData, false))
126 break;
127
128 haveX11Pixmaps = eglMakeCurrent(QEglContext::defaultDisplay(0),
129 (EGLSurface)rgbPixmapData->gl_surface,
130 (EGLSurface)rgbPixmapData->gl_surface,
131 qPixmapRGBSharedEglContext);
132 if (!haveX11Pixmaps) {
133 EGLint err = eglGetError();
134 qWarning() << "Unable to make pixmap config current:" << err << QEglContext::errorString(err);
135 break;
136 }
137 }
138 } while (0);
139
140 if (qPixmapARGBSharedEglContext || qPixmapRGBSharedEglContext) {
141 eglMakeCurrent(QEglContext::defaultDisplay(0),
142 EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
143 }
144
145 if (argbPixmapData) {
146 if (argbPixmapData->gl_surface)
147 QGLContextPrivate::destroyGlSurfaceForPixmap(argbPixmapData);
148 delete argbPixmapData;
149 argbPixmapData = 0;
150 }
151 if (rgbPixmapData) {
152 if (rgbPixmapData->gl_surface)
153 QGLContextPrivate::destroyGlSurfaceForPixmap(rgbPixmapData);
154 delete rgbPixmapData;
155 rgbPixmapData = 0;
156 }
157
158 if (!haveX11Pixmaps) {
159 // Clean up the context(s) if we can't use X11GL pixmaps
160 if (qPixmapARGBSharedEglContext != EGL_NO_CONTEXT)
161 eglDestroyContext(QEglContext::defaultDisplay(0), qPixmapARGBSharedEglContext);
162
163 if (qPixmapRGBSharedEglContext != qPixmapARGBSharedEglContext &&
164 qPixmapRGBSharedEglContext != EGL_NO_CONTEXT)
165 {
166 eglDestroyContext(QEglContext::defaultDisplay(0), qPixmapRGBSharedEglContext);
167 }
168 qPixmapRGBSharedEglContext = EGL_NO_CONTEXT;
169 qPixmapARGBSharedEglContext = EGL_NO_CONTEXT;
170 }
171
172 if (haveX11Pixmaps)
173 qDebug("QX11GLPixmapData is supported");
174 else
175 qDebug("QX11GLPixmapData is *NOT* being used");
176
177 return haveX11Pixmaps;
178}
179
180QX11GLPixmapData::QX11GLPixmapData()
181 : QX11PixmapData(QPixmapData::PixmapType),
182 ctx(0)
183{
184}
185
186QX11GLPixmapData::~QX11GLPixmapData()
187{
188}
189
190static QGL2PaintEngineEx* qt_gl2_engine_for_pixmaps = 0;
191
192QPaintEngine* QX11GLPixmapData::paintEngine() const
193{
194 // We need to create the context before beginPaint - do it here:
195 if (!ctx) {
196 ctx = new QGLContext(glFormat());
197 if (ctx->d_func()->eglContext == 0)
198 ctx->d_func()->eglContext = new QEglContext();
199 ctx->d_func()->eglContext->openDisplay(0); // ;-)
200 ctx->d_func()->eglContext->setApi(QEgl::OpenGL);
201 ctx->d_func()->eglContext->setContext(hasAlphaChannel() ? qPixmapARGBSharedEglContext
202 : qPixmapRGBSharedEglContext);
203 }
204
205 if (!qt_gl2_engine_for_pixmaps)
206 qt_gl2_engine_for_pixmaps = new QGL2PaintEngineEx();
207
208 // Support multiple painters on multiple pixmaps simultaniously
209 if (qt_gl2_engine_for_pixmaps->isActive()) {
210 qWarning("Pixmap paint engine already active");
211 QPaintEngine* engine = new QGL2PaintEngineEx();
212 engine->setAutoDestruct(true);
213 return engine;
214 }
215
216 return qt_gl2_engine_for_pixmaps;
217}
218
219void QX11GLPixmapData::beginPaint()
220{
221// qDebug("QX11GLPixmapData::beginPaint()");
222 if ((EGLSurface)gl_surface == EGL_NO_SURFACE) {
223 qt_createEGLSurfaceForPixmap(this, false);
224 ctx->d_func()->eglSurface = (EGLSurface)gl_surface;
225 ctx->d_func()->valid = true; // ;-)
226 }
227 QGLPaintDevice::beginPaint();
228}
229
230void QX11GLPixmapData::endPaint()
231{
232 glFinish();
233 QGLPaintDevice::endPaint();
234}
235
236QGLContext* QX11GLPixmapData::context() const
237{
238 return ctx;
239}
240
241QSize QX11GLPixmapData::size() const
242{
243 return QSize(w, h);
244}
245
246
247QGLFormat QX11GLPixmapData::glFormat()
248{
249 return QGLFormat::defaultFormat(); //###
250}
251
252QT_END_NAMESPACE
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