Intel Starts Landing Another OpenGL 4.3 Extension
Finally receiving some mainline treatment within Mesa this Sunday is the start of Chris Forbes' long work-in-progress patches concerning ARB_fragment_layer_viewport.
The ARB_fragment_layer_viewport is part of the OpenGL 4.3 specification and allows the special built-in gl_Layer and gl_ViewportIndex variables to be used by the fragment shader, in a similar manner to the already present geometry shader support for these variables. OpenGL developers unfamiliar with GL_ARB_fragment_layer_viewport can find all of the details via the OpenGL.org Registry Specification.
Chris Forbes at Intel has been working on the fragment layer viewport patch-set for a number of months and as of a few hours ago the changes have finally started landing within Mesa Git. These changes will end up in the Mesa 10.3 release later this summer, which could be known as Mesa 11.0 if there's OpenGL 4.0 compliance in time.
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