kc3-lang/angle

2023-08-21T16:57:12

Separate out std::vector<GLuint> boundTextureUnits from SamplerBinding SamplerBinding struct is trivial copy-able except the std::vector<GLuint> boundTextureUnits. This CL moves boundTextureUnits out of the SamplerBinding struct and becomes a vector in ProgramExecutable. This means all of sampler binding's texture units will be stored in one vector and SamplerBinding will remember where its own texture units is stored in that vector by keeping textureUnitsStartIndex and textureUnitsCount. In other word, SamplerBinding::boundTextureUnits (before this CL) is equivalent to mSamplerBoundTextureUnits[SamplerBinding.textureUnitsStartIndex], ..., mSamplerBoundTextureUnits[SamplerBinding.textureUnitsStartIndex + SamplerBinding.textureUnitsCount - 1] after this CL. With this, ProgramExecutable::mSamplerBindings are load/stored with one readBytes/writeBytes call since it is trivially copyable. Bug: b/275102061 Change-Id: I0974cf940875ecbcf655b4469b3bbc910717f1ec Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4798195 Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Roman Lavrov <romanl@google.com> Commit-Queue: Charlie Lao <cclao@google.com>