tree a78880524b9eb562afa98cc57a336c2a058a4c70
parent 685cb02ea8d9afbad46d52ccbe4fa3728ac37693
author Ben Clayton <bclayton@google.com> 1607007249 +0000
committer Commit Bot service account <commit-bot@chromium.org> 1607007249 +0000

Add EmitVertexPointSizeTransform

EmitVertexPointSizeTransform is a Transformer that adds a PointSize builtin global output variable to the module which is assigned 1.0 as the new first statement for all vertex stage entry points.

If the module does not contain a vertex pipeline stage entry point then then this transformer is a no-op.

Bug: tint:321
Change-Id: I0e01236339d9fa1ceab3622af0931a1199c33b99
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/34561
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: dan sinclair <dsinclair@chromium.org>