tree 5c43028320a8f7684c1bcc4eaf446ef60eb7fab8
parent 947201da199eb1fe3aca6a47cda962f4b547a950
author Corentin Wallez <cwallez@chromium.org> 1599691627 +0000
committer Commit Bot service account <commit-bot@chromium.org> 1599691627 +0000

Metal: Use ShaderModule reflection when possible.

This change the Metal backend in preparation for supporting multiple
entrypoints:

 - Explicitly set the spirv_cross entry point before compiling.
 - Moves gathering of the local size to the frontend as it will be
   useful for validation in the future.
 - Query spirv-cross for the modified entrypoint name instead of
   duplicating the code in Dawn.
 - Move some conversion helpers from ShaderModule.cpp to their own
   SpirvUtils file.

Bug: dawn:216
Change-Id: I87d4953428e0bfeb97e39ed22f94d86ae7987782
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/28241
Commit-Queue: Kai Ninomiya <kainino@chromium.org>
Reviewed-by: Kai Ninomiya <kainino@chromium.org>