tree 51f9558abb4c2417de75c2b7172970be1a11aea6
parent ed2c7c7133fddc9769311a3e2206242c30877312
author James Price <jrprice@google.com> 1713440547 +0000
committer Dawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com> 1713440547 +0000

[tint] Polyfill fwidthFine for MSL and HLSL

The `fwidth()` builtins in these languages do not guarantee 'fine'
derivatives, so polyfill `fwidthFine` using `dpdxFine` and `dpdyFine`.

Change-Id: I4a59cc7c19376c77db8a84668bed791c0c9d28cf
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/184420
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Auto-Submit: James Price <jrprice@google.com>