Draft: WIP intel: optimize compute workgroup sizes (!6264) · Merge requests · Mesa / mesa · GitLab

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Marcin Ślusarz requested to merge mslusarz/mesa:opt_cs_wg_sizes into main Aug 10, 2020

For now only the upscaling part of #3083.

Tested with: https://github.com/marcinslusarz/mesa_3083_compute

Current numbers: https://people.freedesktop.org/~mslusarz/mesa3083/i965-mandelbrot500x500-baseline-vs-opt-enabled-20200806.html

Known regressions:

piglit.spec.nv_compute_shader_derivatives.execution.*
dEQP-VK.compute.indirect_dispatch.*
dEQP-VK.conditional_rendering.dispatch.*
dEQP-VK.synchronization.*
dEQP-VK.subgroups.*
dEQP-VK.query_pool.statistics_query.compute_shader_invocations.*
dEQP-VK.query_pool.statistics_query.host_query_reset.*

TODO:

fix regressions
optimize indirect dispatch on iris and i965
find real workloads benefiting from this MR