diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/opengl/qgl.cpp | 68 | ||||
| -rw-r--r-- | src/opengl/qgl.h | 3 | ||||
| -rw-r--r-- | src/opengl/qgl_p.h | 10 |
3 files changed, 72 insertions, 9 deletions
diff --git a/src/opengl/qgl.cpp b/src/opengl/qgl.cpp index 087902b..02bb8f9 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 *****************************************************************************/ diff --git a/src/opengl/qgl.h b/src/opengl/qgl.h index daac760..b110665 100644 --- a/src/opengl/qgl.h +++ b/src/opengl/qgl.h @@ -43,6 +43,7 @@ #define QGL_H #include <QtGui/qwidget.h> +#include <QtGui/qpaintengine.h> #include <QtOpenGL/qglcolormap.h> #include <QtCore/qmap.h> #include <QtCore/qscopedpointer.h> @@ -130,6 +131,8 @@ class QGLContextPrivate; // Namespace class: namespace QGL { + Q_OPENGL_EXPORT void setPreferredPaintEngine(QPaintEngine::Type engineType); + enum FormatOption { DoubleBuffer = 0x0001, DepthBuffer = 0x0002, diff --git a/src/opengl/qgl_p.h b/src/opengl/qgl_p.h index d4b7597..f8158a0 100644 --- a/src/opengl/qgl_p.h +++ b/src/opengl/qgl_p.h @@ -519,15 +519,7 @@ extern QPaintEngine* qt_qgl_paint_engine(); extern EGLDisplay qt_qgl_egl_display(); #endif -inline bool qt_gl_preferGL2Engine() -{ -#if defined(QT_OPENGL_ES_2) - return true; -#else - return (QGLFormat::openGLVersionFlags() & QGLFormat::OpenGL_Version_2_0) - && qgetenv("QT_GL_USE_OPENGL1ENGINE").isEmpty(); -#endif -} +bool qt_gl_preferGL2Engine(); inline GLenum qt_gl_preferredTextureFormat() { |