tree 0db4b70faffb40565658465b4eea0c4d8f459e4d
parent 8a8ddcfbed9bd1193d798c3059ccb3d441b3549d
author Ben Clayton <bclayton@google.com> 1626288231 +0000
committer Tint LUCI CQ <tint-scoped@luci-project-accounts.iam.gserviceaccount.com> 1626288231 +0000

writer/hlsl: Use vector write helper for dynamic indices

This uses FXC compilation failure mitigation for _any_ vector index assignment that has a non-constant index. FXC can still fall over if the loop calls a function that performs the dynamic index.

Use some vector swizzle logic to avoid branches in the helper.

Fixed: tint:980
Change-Id: I2a759d88a7d884bc61b4631cf57feb4acc8178de
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/57882
Auto-Submit: Ben Clayton <bclayton@google.com>
Commit-Queue: Antonio Maiorano <amaiorano@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>