tree bf1392fb0950b1b6b06f0ad65787863cc639a403
parent 77a25c060f87b42d9c8268e4626ec41a06414d98
author James Price <jrprice@google.com> 1631553118 +0000
committer James Price <jrprice@google.com> 1631553118 +0000

Implement and test num_workgroups for all backends

For HLSL, use the new NumWorkgroupsFromUniform transform, and expose
the binding point to use for the generated uniform as a backend
option.

The MSL mapping is trivial, and it was already implemented for WGSL
and SPIR-V.

Bug: tint:752
Change-Id: I4bd37b5d26181629d72b152fe064a60caf8ecdc5
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/63962
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>