Mesa Gets Support For GL4's Separate Shader Objects
Patches were published on Friday for the ARB_separate_shader_object extension of the OpenGL 4.1 specification.
The GL_ARB_separate_program_objects extensions allows for using different shaders for different stages, similar to Microsoft's Direct3D, NVIDIA Cg, and older versions of OpenGL. For a more thorough explanation, the OpenGL registry specification explains:
Conventional GLSL requires multiple shader stages (vertex, fragment, geometry, tessellation control, and tessellation evaluation) to be linked into a single monolithic program object to specify a GLSL shader for each stage.The Mesa support for separate OpenGL shader program objects come in the form of 12 patches and currently reside on the Mesa mailing list. This support comes for both the classic Intel Mesa driver as well as the Gallium3D drivers.
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