webgpu: add `wgsl` comment tag (#29709)

src/renderers/webgpu/nodes/WGSLNodeBuilder.js

@@ -71,7 +71,7 @@ const wgslPolyfill = {
 	equals_bvec2: new CodeNode( 'fn tsl_equals_bvec2( a : vec2f, b : vec2f ) -> vec2<bool> { return vec2<bool>( a.x == b.x, a.y == b.y ); }' ),
 	equals_bvec3: new CodeNode( 'fn tsl_equals_bvec3( a : vec3f, b : vec3f ) -> vec3<bool> { return vec3<bool>( a.x == b.x, a.y == b.y, a.z == b.z ); }' ),
 	equals_bvec4: new CodeNode( 'fn tsl_equals_bvec4( a : vec4f, b : vec4f ) -> vec4<bool> { return vec4<bool>( a.x == b.x, a.y == b.y, a.z == b.z, a.w == b.w ); }' ),
-	repeatWrapping: new CodeNode( `
+	repeatWrapping: new CodeNode( /* wgsl */`
 fn tsl_repeatWrapping( uv : vec2<f32>, dimension : vec2<u32> ) -> vec2<u32> {
 
 	let uvScaled = vec2<u32>( uv * vec2<f32>( dimension ) );
@@ -80,7 +80,7 @@ fn tsl_repeatWrapping( uv : vec2<f32>, dimension : vec2<u32> ) -> vec2<u32> {
 
 }
 ` ),
-	biquadraticTexture: new CodeNode( `
+	biquadraticTexture: new CodeNode( /* wgsl */`
 fn tsl_biquadraticTexture( map : texture_2d<f32>, coord : vec2f, level : i32 ) -> vec4f {
 
 	let iRes = vec2i( textureDimensions( map, level ) );