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-rw-r--r--src/opengl/qgl.cpp315
1 files changed, 74 insertions, 241 deletions
diff --git a/src/opengl/qgl.cpp b/src/opengl/qgl.cpp
index 087902b..a0b2d3a 100644
--- a/src/opengl/qgl.cpp
+++ b/src/opengl/qgl.cpp
@@ -141,6 +141,48 @@ QGLSignalProxy *QGLSignalProxy::instance()
return theSignalProxy();
}
+
+class QGLEngineSelector
+{
+public:
+ QGLEngineSelector() : engineType(QPaintEngine::MaxUser) { }
+
+ void setPreferredPaintEngine(QPaintEngine::Type type) {
+ if (type == QPaintEngine::OpenGL || type == QPaintEngine::OpenGL2)
+ engineType = type;
+ }
+
+ QPaintEngine::Type preferredPaintEngine() {
+ if (engineType == QPaintEngine::MaxUser) {
+ // No user-set engine - use the defaults
+#if defined(QT_OPENGL_ES_2)
+ engineType = QPaintEngine::OpenGL2;
+#else
+ // We can't do this in the constructor for this object because it
+ // needs to be called *before* the QApplication constructor
+ if ((QGLFormat::openGLVersionFlags() & QGLFormat::OpenGL_Version_2_0)
+ && qgetenv("QT_GL_USE_OPENGL1ENGINE").isEmpty())
+ engineType = QPaintEngine::OpenGL2;
+ else
+ engineType = QPaintEngine::OpenGL;
+#endif
+ }
+ return engineType;
+ }
+
+private:
+ QPaintEngine::Type engineType;
+};
+
+Q_GLOBAL_STATIC(QGLEngineSelector, qgl_engine_selector)
+
+
+bool qt_gl_preferGL2Engine()
+{
+ return qgl_engine_selector()->preferredPaintEngine() == QPaintEngine::OpenGL2;
+}
+
+
/*!
\namespace QGL
\inmodule QtOpenGL
@@ -181,6 +223,32 @@ QGLSignalProxy *QGLSignalProxy::instance()
\sa {Sample Buffers Example}
*/
+/*!
+ \fn void QGL::setPreferredPaintEngine(QPaintEngine::Type engineType)
+
+ \since 4.6
+
+ Sets the preferred OpenGL paint engine that is used to draw onto
+ QGLWidgets, QGLPixelBuffers and QGLFrameBufferObjects with QPainter
+ in Qt.
+
+ The \a engineType parameter specifies which of the GL engines to
+ use. Only \c QPaintEngine::OpenGL and \c QPaintEngine::OpenGL2 are
+ valid parameters to this function. All other values are ignored.
+
+ By default, the \c QPaintEngine::OpenGL2 engine is used if GL/GLES
+ version 2.0 is available, otherwise \c QPaintEngine::OpenGL is
+ used.
+
+ \warning This function must be called before the QApplication
+ constructor is called.
+*/
+void QGL::setPreferredPaintEngine(QPaintEngine::Type engineType)
+{
+ qgl_engine_selector()->setPreferredPaintEngine(engineType);
+}
+
+
/*****************************************************************************
QGLFormat implementation
*****************************************************************************/
@@ -1331,7 +1399,6 @@ void QGLContextPrivate::init(QPaintDevice *dev, const QGLFormat &format)
crWin = false;
initDone = false;
sharing = false;
- clear_on_painter_begin = true;
max_texture_size = -1;
version_flags_cached = false;
version_flags = QGLFormat::OpenGL_Version_None;
@@ -4186,7 +4253,7 @@ void QGLWidget::renderText(int x, int y, const QString &str, const QFont &font,
} else {
setAutoBufferSwap(false);
// disable glClear() as a result of QPainter::begin()
- d->glcx->d_func()->clear_on_painter_begin = false;
+ d->disable_clear_on_painter_begin = true;
if (engine->type() == QPaintEngine::OpenGL2) {
qt_save_gl_state();
#ifndef QT_OPENGL_ES_2
@@ -4216,7 +4283,7 @@ void QGLWidget::renderText(int x, int y, const QString &str, const QFont &font,
p->end();
delete p;
setAutoBufferSwap(auto_swap);
- d->glcx->d_func()->clear_on_painter_begin = true;
+ d->disable_clear_on_painter_begin = false;
if (engine->type() == QPaintEngine::OpenGL2)
qt_restore_gl_state();
}
@@ -4359,7 +4426,7 @@ void QGLWidget::renderText(double x, double y, double z, const QString &str, con
} else {
setAutoBufferSwap(false);
// disable glClear() as a result of QPainter::begin()
- d->glcx->d_func()->clear_on_painter_begin = false;
+ d->disable_clear_on_painter_begin = true;
if (engine->type() == QPaintEngine::OpenGL2)
qt_save_gl_state();
p = new QPainter(this);
@@ -4399,7 +4466,7 @@ void QGLWidget::renderText(double x, double y, double z, const QString &str, con
if (engine->type() == QPaintEngine::OpenGL2)
qt_restore_gl_state();
setAutoBufferSwap(auto_swap);
- d->glcx->d_func()->clear_on_painter_begin = true;
+ d->disable_clear_on_painter_begin = false;
}
#ifndef QT_OPENGL_ES
if (engine->type() == QPaintEngine::OpenGL2)
@@ -4747,6 +4814,8 @@ void QGLWidgetPrivate::initContext(QGLContext *context, const QGLWidget* shareWi
{
Q_Q(QGLWidget);
+ glDevice.setWidget(q);
+
QGLExtensions::init();
glcx = 0;
autoSwap = true;
@@ -4782,242 +4851,6 @@ Q_OPENGL_EXPORT const QString qt_gl_library_name()
}
#endif
-void QGLDrawable::setDevice(QPaintDevice *pdev)
-{
- wasBound = false;
- widget = 0;
- buffer = 0;
- fbo = 0;
-#ifdef Q_WS_QWS
- wsurf = 0;
-#endif
-
-#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
- if (pdev->devType() == QInternal::Pixmap) {
- QPixmapData *data = static_cast<QPixmap *>(pdev)->pixmapData();
- Q_ASSERT(data->classId() == QPixmapData::OpenGLClass);
- pixmapData = static_cast<QGLPixmapData *>(data);
-
- fbo = pixmapData->fbo();
- }
-#else
- Q_ASSERT(pdev->devType() != QInternal::Pixmap);
-#endif
-
- if (pdev->devType() == QInternal::Widget)
- widget = static_cast<QGLWidget *>(pdev);
- else if (pdev->devType() == QInternal::Pbuffer)
- buffer = static_cast<QGLPixelBuffer *>(pdev);
- else if (pdev->devType() == QInternal::FramebufferObject)
- fbo = static_cast<QGLFramebufferObject *>(pdev);
-#ifdef Q_WS_QWS
- else if (pdev->devType() == QInternal::UnknownDevice)
- wsurf = static_cast<QWSGLPaintDevice*>(pdev)->windowSurface();
-#elif !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
- else if (pdev->devType() == QInternal::UnknownDevice)
- wsurf = static_cast<QGLWindowSurface *>(pdev);
-#endif
-}
-
-void QGLDrawable::swapBuffers()
-{
- if (widget) {
- if (widget->autoBufferSwap())
- widget->swapBuffers();
-#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
- } else if (pixmapData) {
- pixmapData->swapBuffers();
-#endif
- } else {
- glFlush();
- }
-}
-
-void QGLDrawable::makeCurrent()
-{
- previous_fbo = 0;
-#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
- if (!pixmapData && !fbo) {
-#else
- if (!fbo) {
-#endif
- QGLContext *ctx = context();
- previous_fbo = ctx->d_ptr->current_fbo;
- ctx->d_ptr->current_fbo = 0;
- if (previous_fbo)
- glBindFramebuffer(GL_FRAMEBUFFER_EXT, 0);
- }
-
- if (widget)
- widget->makeCurrent();
-#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
- else if (pixmapData)
- pixmapData->makeCurrent();
-#endif
- else if (buffer)
- buffer->makeCurrent();
-#if defined(Q_WS_QWS) || (!defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL))
- else if (wsurf)
- wsurf->context()->makeCurrent();
-#endif
- else if (fbo) {
- wasBound = fbo->isBound();
- if (!wasBound)
- fbo->bind();
- }
-}
-
-#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
-QGLPixmapData *QGLDrawable::copyOnBegin() const
-{
- if (!pixmapData || pixmapData->isUninitialized())
- return 0;
- return pixmapData;
-}
-#endif
-
-void QGLDrawable::doneCurrent()
-{
-#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
- if (pixmapData) {
- pixmapData->doneCurrent();
- return;
- }
-#endif
-
- if (previous_fbo) {
- QGLContext *ctx = context();
- ctx->d_ptr->current_fbo = previous_fbo;
- glBindFramebuffer(GL_FRAMEBUFFER_EXT, previous_fbo);
- }
-
- if (fbo && !wasBound)
- fbo->release();
-}
-
-QSize QGLDrawable::size() const
-{
- if (widget) {
- return QSize(widget->d_func()->glcx->device()->width(),
- widget->d_func()->glcx->device()->height());
-#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
- } else if (pixmapData) {
- return pixmapData->size();
-#endif
- } else if (buffer) {
- return buffer->size();
- } else if (fbo) {
- return fbo->size();
- }
-#ifdef Q_WS_QWS
- else if (wsurf)
- return wsurf->window()->frameSize();
-#elif !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
- else if (wsurf)
- return QSize(wsurf->width(), wsurf->height());
-#endif
- return QSize();
-}
-
-QGLFormat QGLDrawable::format() const
-{
- if (widget)
- return widget->format();
- else if (buffer)
- return buffer->format();
-#if defined(Q_WS_QWS) || (!defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL))
- else if (wsurf)
- return wsurf->context()->format();
-#endif
- else if (fbo && QGLContext::currentContext()) {
- QGLFormat fmt = QGLContext::currentContext()->format();
- fmt.setStencil(fbo->attachment() == QGLFramebufferObject::CombinedDepthStencil);
- fmt.setDepth(fbo->attachment() != QGLFramebufferObject::NoAttachment);
- return fmt;
- }
-
- return QGLFormat();
-}
-
-GLuint QGLDrawable::bindTexture(const QImage &image, GLenum target, GLint format,
- QGLContext::BindOptions options)
-{
- QGLTexture *texture = 0;
- options |= QGLContext::MemoryManagedBindOption;
- if (widget)
- texture = widget->d_func()->glcx->d_func()->bindTexture(image, target, format, options);
- else if (buffer)
- texture = buffer->d_func()->qctx->d_func()->bindTexture(image, target, format, options);
- else if (fbo && QGLContext::currentContext())
- texture = const_cast<QGLContext *>(QGLContext::currentContext())->d_func()->bindTexture(image, target, format, options);
-#if defined(Q_WS_QWS) || (!defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL))
- else if (wsurf)
- texture = wsurf->context()->d_func()->bindTexture(image, target, format, options);
-#endif
- return texture->id;
-}
-
-GLuint QGLDrawable::bindTexture(const QPixmap &pixmap, GLenum target, GLint format,
- QGLContext::BindOptions options)
-{
- QGLTexture *texture = 0;
- if (widget)
- texture = widget->d_func()->glcx->d_func()->bindTexture(pixmap, target, format, options);
- else if (buffer)
- texture = buffer->d_func()->qctx->d_func()->bindTexture(pixmap, target, format, options);
- else if (fbo && QGLContext::currentContext())
- texture = const_cast<QGLContext *>(QGLContext::currentContext())->d_func()->bindTexture(pixmap, target, format, options);
-#if defined(Q_WS_QWS) || (!defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL))
- else if (wsurf)
- texture = wsurf->context()->d_func()->bindTexture(pixmap, target, format, options);
-#endif
- return texture->id;
-}
-
-QColor QGLDrawable::backgroundColor() const
-{
- if (widget)
- return widget->palette().brush(widget->backgroundRole()).color();
-#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
- else if (pixmapData)
- return pixmapData->fillColor();
-#endif
- return QApplication::palette().brush(QPalette::Background).color();
-}
-
-bool QGLDrawable::hasTransparentBackground() const
-{
- return widget && widget->testAttribute(Qt::WA_TranslucentBackground);
-}
-
-QGLContext *QGLDrawable::context() const
-{
- if (widget)
- return widget->d_func()->glcx;
- else if (buffer)
- return buffer->d_func()->qctx;
- else if (fbo)
- return const_cast<QGLContext *>(QGLContext::currentContext());
-#if defined(Q_WS_QWS) || (!defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL))
- else if (wsurf)
- return wsurf->context();
-#endif
- return 0;
-}
-
-bool QGLDrawable::autoFillBackground() const
-{
- if (widget)
- return widget->autoFillBackground();
-#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
- else if (pixmapData)
- return pixmapData->needsFill();
-#endif
- else
- return false;
-}
-
-
bool QGLShareRegister::checkSharing(const QGLContext *context1, const QGLContext *context2) {
bool sharing = (context1 && context2 && context1->d_ptr->group == context2->d_ptr->group);
return sharing;