Commit d375547ced52fc3aee7a29828a838980e43c75ce
2022-08-12T15:54:39
Do not link program pipeline in glUseProgramStages 1. The commit 3a9f18f135fe82 caused a link to occur everytime glUseProgramStages is called. This is redundant since the program pipeline can be linked just before usage, thus allowing for multiple stages to be bound before linking the executable. 2. Mark PPO as a dirty object and link the PPO in dirty object handler 3. Early return if the same program is being bound to the same stage of the pipeline. 4. Added ProgramPipelineObjectBenchmark perf test that switches programs before a draw and observed following data - 1. vulkan profile - 1. wall_time before patch - 102000 ns 2. wall_time after patch - 38000 ns 2. vulkan_null profile - 1. wall_time before patch - 125000 ns 2. wall_time after patch - 52000 ns Bug: angleproject:5102 Bug: angleproject:6566 Test: ContextNoErrorPPOTest31.*Vulkan Test: ProgramPipelineTest31.*Vulkan Test: ProgramPipelineObjectBenchmark* Change-Id: Idbc2fcb4875bbd040e9ec847eb2a8f96f287173c Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3830170 Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: mohan maiya <m.maiya@samsung.com>