tree bea1315ac7baad2df651f299693ab61ed3a9b546
parent 3b68fcb5443b2a13cc21b67498595997e8382237
author Stephen White <senorblanco@chromium.org> 1646071693 +0000
committer Tint LUCI CQ <tint-scoped@luci-project-accounts.iam.gserviceaccount.com> 1646071693 +0000

GLSL: implement derivative instructions.

While Desktop GLSL supports the Coarse and Fine flavours, GLSL ES does
not. For now, emit dFdx/dFdy in all cases for ES, but excluding the
Coarse and Fine flavours via validation is also an option.

Bug: tint:1445
Change-Id: Iaac589f72043b5547e9141a6e870c1fd49631f6f
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/82142
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Stephen White <senorblanco@chromium.org>