Robert Osfield
5d0b84edd0
From Marcin Hajder, "This submission contains Texture2DMultisample osg implementation.
...
Texture2DMultismaple as name suggests provides means to directly access subsamples of rendered FBO target. (GLSL 1.5 texelFetch call).
Recently I was working on deferred renderer with OSG, during that I noticed there is no support for multisampled textures (GL_ARB_texture_multisample extension). After consultations with Paul Martz and Wojtek Lewandowski I added Texture2DMultisample class and made few necessary changes around osg::FrameBufferObject, osg::Texture and osgUtil::RenderStage classes."
and from follow email:
"Fixed. According to ARB_texture_multisample extension specification multisample textures don't need TexParameters since they can only be fetched with texelFetch."
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From Paul Martz, "This change address the following issue: an app opens a Viewer on a multidisplay system, configured to setUpViewAcrossAllDisplays, with a non-default clear mask. In this case, OSG failed to propagate the clear mask to the slave Cameras, resulting in the clear mask being ignored. To fix this issue, this revision adds a new CullSettings::VariablesMask bit, CLEAR_MASK, to explicitly control inheritance of the clear mask. This bit is set by default, which means that the clear mask now inherits by default, whereas previously it did not."
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