Hardware Counter Names #33

Is there further information publicly available regarding the hardware counters exposed by the GPU? e.g https://github.com/GPUOpen-Tools/GPA/blob/master/Src/PublicCounterCompilerInputFiles/PublicCounterNamesGLGfx9.txt

Motivation: I'm fiddling around with performance counters using the AMD gpa interface extension directly, but trying to gather information regarding streaming, tracing, counter semantics etc. seems rather difficult.