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...how to implement the more advanced Shader >>>>>> Model >>>>>> 6 reduction operations in radv (and obviously most of the work >>>>>> would be useful for radeonsi too). They're explained in the spec >>>>>> for GL_AMD_shader_ballot at >>>>>> https://www.khronos.org/registry/OpenGL/extensions/AMD/AMD_shader >>>>>> _ballot.txt, but I'll summarize them here. There are two types of >>>>>> operations: >>>>>> reductions that always return a uniform value,...

...I've been looking into how to implement the more advanced Shader Model >>>>>> 6 reduction operations in radv (and obviously most of the work would >>>>>> be useful for radeonsi too). They're explained in the spec for >>>>>> GL_AMD_shader_ballot at >>>>>> https://www.khronos.org/registry/OpenGL/extensions/AMD/AMD_shader_ballot.txt, >>>>>> but I'll summarize them here. There are two types of operations: >>>>>> reductions that always return a uniform value, and prefix scan >>&gt...