Commit 5e13757bfd8561a69e66ab2b2b2ea0373e0fd096
2020-05-11T00:50:00
Metal: Fix array of structs containing array of samplers bug. Previously ProgramMtl could try to bind fixed slots to samplers based on layout (set=..., binding=...). However, GLSL layout model is different from Metal slots assignment. For example, The following is valid layout in GLSL: - array samplers A[2] is bound to index 0. - array samplers B[2] is bound to index 1. It is invalid to do so in Metal, since A occupies 2 slots, thus samplers B[2] must be bound to slots starting from 2. New binding method: let spirv-cross auto assigns the texture slots and retrieve them after compilation. Incomplete textures moved to ContextMtl using IncompleteTextureSet. New test added: GLSLTest.ArrayOfStructContainingArrayOfSamplers. Bug: angleproject:2634 Change-Id: Ib0edaaf8b20512e1272c37c1d4b16a88a5b35e75 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2193193 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Jonah Ryan-Davis <jonahr@google.com>