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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtOpenGL module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QDebug>
#include <private/qgl_p.h>
#include <private/qegl_p.h>
#include <private/qeglproperties_p.h>
#if !defined(QT_OPENGL_ES_1)
#include <private/qpaintengineex_opengl2_p.h>
#endif
#ifndef QT_OPENGL_ES_2
#include <private/qpaintengine_opengl_p.h>
#endif
#include "qpixmapdata_x11gl_p.h"
QT_BEGIN_NAMESPACE
extern EGLConfig qt_chooseEGLConfigForPixmap(bool hasAlpha, bool readOnly); // in qgl_x11egl.cpp
extern bool qt_createEGLSurfaceForPixmap(QPixmapData* pmd, bool readOnly); // in qgl_x11egl.cpp
// On 16bpp systems, RGB & ARGB pixmaps are different bit-depths and therefore need
// different contexts:
static EGLContext qPixmapARGBSharedEglContext = EGL_NO_CONTEXT;
static EGLContext qPixmapRGBSharedEglContext = EGL_NO_CONTEXT;
bool QX11GLPixmapData::hasX11GLPixmaps()
{
static bool checkedForX11Pixmaps = false;
static bool haveX11Pixmaps = false;
if (checkedForX11Pixmaps)
return haveX11Pixmaps;
checkedForX11Pixmaps = true;
QX11PixmapData *argbPixmapData = 0;
QX11PixmapData *rgbPixmapData = 0;
do {
if (qgetenv("QT_USE_X11GL_PIXMAPS").isEmpty())
break;
// Check we actually have EGL configs which support pixmaps
EGLConfig argbConfig = qt_chooseEGLConfigForPixmap(true, false);
EGLConfig rgbConfig = qt_chooseEGLConfigForPixmap(false, false);
if (argbConfig == 0 || rgbConfig == 0)
break;
// Create the shared contexts:
eglBindAPI(EGL_OPENGL_ES_API);
EGLint contextAttribs[] = {
#if defined(QT_OPENGL_ES_2)
EGL_CONTEXT_CLIENT_VERSION, 2,
#endif
EGL_NONE
};
qPixmapARGBSharedEglContext = eglCreateContext(QEglContext::defaultDisplay(0),
argbConfig, 0, contextAttribs);
if (argbConfig == rgbConfig) {
// If the configs are the same, we can re-use the same context.
qPixmapRGBSharedEglContext = qPixmapARGBSharedEglContext;
} else {
qPixmapRGBSharedEglContext = eglCreateContext(QEglContext::defaultDisplay(0),
rgbConfig, 0, contextAttribs);
}
argbPixmapData = new QX11PixmapData(QPixmapData::PixmapType);
argbPixmapData->resize(100, 100);
argbPixmapData->fill(Qt::transparent); // Force ARGB
if (!qt_createEGLSurfaceForPixmap(argbPixmapData, false))
break;
haveX11Pixmaps = eglMakeCurrent(QEglContext::defaultDisplay(0),
(EGLSurface)argbPixmapData->gl_surface,
(EGLSurface)argbPixmapData->gl_surface,
qPixmapARGBSharedEglContext);
if (!haveX11Pixmaps) {
EGLint err = eglGetError();
qWarning() << "Unable to make pixmap config current:" << err << QEglContext::errorString(err);
break;
}
// If the ARGB & RGB configs are the same, we don't need to check RGB too
if (haveX11Pixmaps && (argbConfig != rgbConfig)) {
rgbPixmapData = new QX11PixmapData(QPixmapData::PixmapType);
rgbPixmapData->resize(100, 100);
rgbPixmapData->fill(Qt::red);
// Try to actually create an EGL pixmap surface
if (!qt_createEGLSurfaceForPixmap(rgbPixmapData, false))
break;
haveX11Pixmaps = eglMakeCurrent(QEglContext::defaultDisplay(0),
(EGLSurface)rgbPixmapData->gl_surface,
(EGLSurface)rgbPixmapData->gl_surface,
qPixmapRGBSharedEglContext);
if (!haveX11Pixmaps) {
EGLint err = eglGetError();
qWarning() << "Unable to make pixmap config current:" << err << QEglContext::errorString(err);
break;
}
}
} while (0);
if (qPixmapARGBSharedEglContext || qPixmapRGBSharedEglContext) {
eglMakeCurrent(QEglContext::defaultDisplay(0),
EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
}
if (argbPixmapData) {
if (argbPixmapData->gl_surface)
QGLContextPrivate::destroyGlSurfaceForPixmap(argbPixmapData);
delete argbPixmapData;
argbPixmapData = 0;
}
if (rgbPixmapData) {
if (rgbPixmapData->gl_surface)
QGLContextPrivate::destroyGlSurfaceForPixmap(rgbPixmapData);
delete rgbPixmapData;
rgbPixmapData = 0;
}
if (!haveX11Pixmaps) {
// Clean up the context(s) if we can't use X11GL pixmaps
if (qPixmapARGBSharedEglContext != EGL_NO_CONTEXT)
eglDestroyContext(QEglContext::defaultDisplay(0), qPixmapARGBSharedEglContext);
if (qPixmapRGBSharedEglContext != qPixmapARGBSharedEglContext &&
qPixmapRGBSharedEglContext != EGL_NO_CONTEXT)
{
eglDestroyContext(QEglContext::defaultDisplay(0), qPixmapRGBSharedEglContext);
}
qPixmapRGBSharedEglContext = EGL_NO_CONTEXT;
qPixmapARGBSharedEglContext = EGL_NO_CONTEXT;
}
if (haveX11Pixmaps)
qDebug("QX11GLPixmapData is supported");
else
qDebug("QX11GLPixmapData is *NOT* being used");
return haveX11Pixmaps;
}
QX11GLPixmapData::QX11GLPixmapData()
: QX11PixmapData(QPixmapData::PixmapType),
ctx(0)
{
}
QX11GLPixmapData::~QX11GLPixmapData()
{
}
#if !defined(QT_OPENGL_ES_1)
Q_GLOBAL_STATIC(QGL2PaintEngineEx, qt_gl_pixmap_2_engine)
#endif
#ifndef QT_OPENGL_ES_2
Q_GLOBAL_STATIC(QOpenGLPaintEngine, qt_gl_pixmap_engine)
#endif
QPaintEngine* QX11GLPixmapData::paintEngine() const
{
// We need to create the context before beginPaint - do it here:
if (!ctx) {
ctx = new QGLContext(glFormat());
if (ctx->d_func()->eglContext == 0)
ctx->d_func()->eglContext = new QEglContext();
ctx->d_func()->eglContext->openDisplay(0); // ;-)
ctx->d_func()->eglContext->setApi(QEgl::OpenGL);
ctx->d_func()->eglContext->setContext(hasAlphaChannel() ? qPixmapARGBSharedEglContext
: qPixmapRGBSharedEglContext);
}
QPaintEngine* engine;
#if defined(QT_OPENGL_ES_1)
engine = qt_gl_pixmap_engine();
#elif defined(QT_OPENGL_ES_2)
engine = qt_gl_pixmap_2_engine();
#else
if (qt_gl_preferGL2Engine())
engine = qt_gl_pixmap_2_engine();
else
engine = qt_gl_pixmap_engine();
#endif
// Support multiple painters on multiple pixmaps simultaniously
if (engine->isActive()) {
qWarning("Pixmap paint engine already active");
#if defined(QT_OPENGL_ES_1)
engine = new QOpenGLPaintEngine;
#elif defined(QT_OPENGL_ES_2)
engine = new QGL2PaintEngineEx;
#else
if (qt_gl_preferGL2Engine())
engine = new QGL2PaintEngineEx;
else
engine = new QOpenGLPaintEngine;
#endif
engine->setAutoDestruct(true);
return engine;
}
return engine;
}
void QX11GLPixmapData::beginPaint()
{
// qDebug("QX11GLPixmapData::beginPaint()");
if ((EGLSurface)gl_surface == EGL_NO_SURFACE) {
qt_createEGLSurfaceForPixmap(this, false);
ctx->d_func()->eglSurface = (EGLSurface)gl_surface;
ctx->d_func()->valid = true; // ;-)
}
QGLPaintDevice::beginPaint();
}
void QX11GLPixmapData::endPaint()
{
glFinish();
QGLPaintDevice::endPaint();
}
QGLContext* QX11GLPixmapData::context() const
{
return ctx;
}
QSize QX11GLPixmapData::size() const
{
return QSize(w, h);
}
QGLFormat QX11GLPixmapData::glFormat()
{
return QGLFormat::defaultFormat(); //###
}
QT_END_NAMESPACE
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