Commit b8bfe6f6c04a6cf4fac81f0363ad23a0b92b22f2
2023-01-25T18:50:40
Metal: rewrite default uniforms and uniform blocks Instead of rewriting uniforms in shaders to match std140 layout, re-pack incoming uniform blocks' std140 packed variables to match Metal's layout. This change intorduces a new BlockLayoutEncoder for Metal types The block encoder handles packing typically larger GL types (bools) into smaller types, and adding support for more compressed matrix types. Since we no longer need to do shader-time packing and unpacking of data from std140 padded structs, complicated shader transformations have been removed. This patch greatly reduces register pressure, especially when working with shaders with arrays of previously expanded types. (Vec3's) Bug: angleproject:7137 Change-Id: Icd1da8c7a383f3354313a58618fc1bf6656726b4 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3733524 Commit-Queue: Kyle Piddington <kpiddington@apple.com> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Kenneth Russell <kbr@chromium.org>