* WGSL storage address space should always correspond to MSL device address space.
See MSL spec section 4.2.
* Update baselines
* Add error for storage address space if MSL version < 2.
* Update default MSL version to 2.0.
Fixes#1642.
Since 1d textures cannot have mipmaps, MSL requires that the `level` argument to
texel accesses and dimension queries be a constexpr 0. For our purposes, just
omit the level argument altogether.
* glsl-in: Remove unneeded mutability from reference
* glsl-in: Fix composite constructors
In the recent rework of the constructors it seems that the logic for
composite types (arrays and structs) was accidentally removed by me.
* [hlsl-out] Write `mad` intrinsic for `fma` function
- This should be enough because we only support f32 for now.
- Adds a new test for WGSL functions, in the spirit of operators.wgsl.
- Closes#1579
* Add FMA feature to glsl backend
- I think this is right. Just iterate all known expressions in all
functions and entry points to locate any `fma` function call.
Should not need to walk the statement DAG.
* Transform GLSL fma function into an airthmetic expression when necessary
* Add tests for GLSL fma function tranformation
* Remove the hazard comment from the webgl test input
* Add helper method for fma function support checks
* Address review comment
* Add FindLsb / FindMsb
* Fixes and tests for FindLsb/FindMsb
* Add findLsb / findMsb as WGSL builtins
* Fix tests
* Fix incompatible type issue with MSL output
* Requested changes
* Test fewer cases of findLsb/findMsb
The IR doesn't allow having structs has bindings for entry point
input/output, so the glsl frontend must flatten them.
Glsl defines that the locations are sequential from the block base location.
The glsl spec defines that vector constructors flatten their arguments
and consume them in order, ignoring the remaining arguments if there are
more than needed
