tree 9dadacd0a1b69598245c21a9e132211e82dcd1d6
parent 17601930e4966c088a5db0f7215c6ad49c039219
author Stephen White <senorblanco@chromium.org> 1646230022 +0000
committer Tint LUCI CQ <tint-scoped@luci-project-accounts.iam.gserviceaccount.com> 1646230022 +0000

GLSL: fix textureGather() and textureGatherOffset() with depth textures.

Unlike other texture functions in GLSL, textureGather() and
textureGatherOffset() do not expect the refZ value to be appended to
the texture coordinates. It is passed as a regular argument. So append
refZ to coordinates by default, and pass as a regular parameter only
for the gather functions.

Bug: tint:1459
Change-Id: Iad1255be3de5915aeff4adb9054479b9e92c45cb
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/82340
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Stephen White <senorblanco@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>