dawn-cmake/docs/origin-trial-changes.md

# Tint changes during Origin Trial

## Changes for M95

### New Features
* The size of an array can now be defined using a non-overridable module-scope constant
Allow array size to be a module-scope constant Change ast::Array to use an ast::Expression for its `size` field. The WGSL frontend now parses the array size as an `primary_expression`, and the Resolver is responsible for validating the expression is a signed or unsigned integer, and either a literal or a non-overridable module-scope constant. The Resolver evaluates the constant value of the size expression, and so the resolved sem::Array type still has a constant size as before. Fixed: tint:1068 Fixed: tint:1117 Change-Id: Icfa141482ea1e47ea8c21a25e9eb48221f176e9a Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/63061 Auto-Submit: James Price <jrprice@google.com> Kokoro: Kokoro <noreply+kokoro@google.com> Commit-Queue: James Price <jrprice@google.com> Reviewed-by: Ben Clayton <bclayton@google.com> 2021-09-02 13:49:59 +00:00			`# Tint changes during Origin Trial`

			`## Changes for M95`

			`### New Features`
			`* The size of an array can now be defined using a non-overridable module-scope constant`