Hello, I am trying to render a 10-bit image from an OpenGL fragment shader attached to a QQuickItem in a simple QML scene. My gfx driver & display support 10-bit, and I know this already works if I create a standalone QGLWidget with a 10-bit format. To get this working in QML, I have tried setting my QQuickView's format to 10-bit as follows:
QSurfaceFormat fmt; fmt.setRedBufferSize(10); fmt.setGreenBufferSize(10); fmt.setBlueBufferSize(10); fmt.setRenderableType(QSurfaceFormat::OpenGL); QQuickView view; view.setFormat(fmt); view.setSource(...); view.show(); I also register a QQuickItem and render some patterns from a fragment shader in there. When I ask this item's QQuickWindow member for its current format via window()->format(), it reports back the same 10-bit format I requested earlier, however if I ask for the format of the window's opengl context via window()->openglContext()->format(), then it reports an 8-bit format. Note that I am not using ANGLE - process explorer shows that my app is in fact loading opengl32.dll and not directx. So I have two questions: * Why does my OpenGL context format not match the window format? * Am I taking the correct approach, or which steps might I be missing to achieve a 10-bit backbuffer for my QQuickItem to draw into? It has been suggested that I might achieve 10-bit rendering by displaying a 10-bit texture in the scene graph via QSGSimpleTextureNode and a custom QSGTexture class. I will try this approach as well. Thanks, Matt Matt McLin Software Architect: Healthcare Division Barco, Inc. This message is subject to the following terms and conditions: MAIL DISCLAIMER<http://www.barco.com/en/maildisclaimer>
_______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
