Commit 001c7e8cb64022d281ebc41fe8650ab5ac547889
2020-09-21T13:25:46
Vulkan: Link PPO during draw validation From the OpenGL ES 3.1 spec: 11.1.3.11 Validation It is not always possible to determine at link time if a program object can execute successfully, given that LinkProgram can not know the state of the remainder of the pipeline. Therefore validation is done when the first rendering command which triggers shader invocations is issued, to determine if the set of active program objects can be executed. For draws, this CL moves the PPO link operation to ValidateDrawStates() to generate PPO link failures within ANGLE's validation layer, so we fail any rendering commands during command validation. For dispatch, PPOs are linked during Context::prepareForDispatch(), where the PPO is converted from draw to compute, since that conversion requires a re-link. This re-link shouldn't fail due to errors that would have been caught during validation, since the compute shader must have successfully linked before it can be included in the PPO in the first place. We don't re-link when converting back to draw, since it's possible there are validation errors (which we want to catch during validation of the next rendering command). Bug: angleproject:5064 Test: dEQP.GLES31/functional_separate_shader_validation_es31_* Test: ContextNoErrorTest31.DrawWithPPO Test: ProgramPipelineTest31.VerifyPpoLinkErrorSignalledCorrectly Change-Id: Ibb249e893c007a83cc6b813f848a660bfa34ecb0 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2422375 Commit-Queue: Tim Van Patten <timvp@google.com> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Ian Elliott <ianelliott@google.com>