I am trying to mod this sample to use the following texture type... Does osgCompute support this?
textureRect0->setSourceType(GL_FLOAT); textureRect0->setInternalFormat(GL_RGBA16F_ARB); textureRect0->setSourceFormat(GL_RGBA); jens.svt wrote: > Hi serkan, hi J.P., > > Here is a link to a simple example solving your problem: > http://www.cg.informatik.uni-siegen.de/data/Downloads/svt/osgComputeDemoApp.zip > We render a rotating cow into a texture then run a cuda-kernel and display > the result in the same scene. > > You need to set the usage flags of your render targets to GL_TARGET, e.g. : > Target0->setUsage( osgCompute::GL_TARGET_COMPUTE_SOURCE ). > With this flag you tell the texture that it is used as a FBO. > Unfortunately, OpenSceneGraph does not call any function of osg::Texture when > it renders into a texture. > In other words something like texture->applyAsFBO() is missing. > So there is no way to get notified when this happens. > The only way to deal with this is to copy the texture memory each time a > mapping function is called (GPU->GPU which is still fast). > However, for this the user needs to setup the usage flag. > > Additionally, with older drivers/CUDA versions (we are not sure about this) > you have to call MRTTexture->unmap() after your kernel has finished. > If you do not call unmap(), the MRTTexture is still mapped in the CUDA > context and OpenGL cannot render into it successfully. > > Hopefully this helps, > Jens ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=47458#47458 _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
