Hi all, I am looking at ARB_shader_clock with i965 in mind.
So far I've got the most of the infra/plumbing, and a fancy a new intrinsic :) On the hardware side, I was thinking about using the Observability Architecture (OA) counters. The fun part is that those tend to vary quite a bit based on the hardware generation. So far I'm leaning towards: - "Count of XXX threads dispatched to EUs" for BRW and later. - "XXX Shader Active Time" for earlier (SNB-HSW/VLV) hardware. Do there sound appropriate, or should we opt for the various knobs in 'Flexible EU event counters' ? Is there some alternative piece of hardware in i965, which I can use ? Going for OA has a small catch. Reading through the PRM, it is not obvious if one can track the same source twice (the GL_AMD_performance_monitor implementation comes to mind). I'm about to take a closer look into brw_performance_monitor.[ch] shortly, but if any gotchas/fancy interactions come to mind let me know. Thanks Emil P.S. Does anyone recall the consensus wrt adding the 2015 extensions to GL3.txt ? _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
