More WGSL syntax updates

This CL updates more #'s to //'s and a missing set to group.

Change-Id: If417ed019319ed760e3b672770397857c6dfc40c
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/39065
Commit-Queue: dan sinclair <dsinclair@chromium.org>
Commit-Queue: Sarah Mashayekhi <sarahmashay@google.com>
Auto-Submit: dan sinclair <dsinclair@chromium.org>
Reviewed-by: Sarah Mashayekhi <sarahmashay@google.com>
Reviewed-by: Ryan Harrison <rharrison@chromium.org>

src/dawn_native/QueryHelper.cpp

@@ -70,20 +70,20 @@ namespace dawn_native {
 
                 var timestamp : Timestamp = timestamps.t[index];
 
-                # Return 0 for the unavailable value.
+                // Return 0 for the unavailable value.
                 if (availability.v[index] == 0u) {
                     timestamps.t[index].low = 0u;
                     timestamps.t[index].high = 0u;
                     return;
                 }
 
-                # Multiply the values in timestamps buffer by the period.
+                // Multiply the values in timestamps buffer by the period.
                 var period : f32 = params.period;
                 var w : u32 = 0u;
 
-                # If the product of low 32-bits and the period does not exceed the maximum of u32,
-                # directly do the multiplication, otherwise, use two u32 to represent the high
-                # 16-bits and low 16-bits of this u32, then multiply them by the period separately.
+                // If the product of low 32-bits and the period does not exceed the maximum of u32,
+                // directly do the multiplication, otherwise, use two u32 to represent the high
+                // 16-bits and low 16-bits of this u32, then multiply them by the period separately.
                 if (timestamp.low <= u32(f32(0xFFFFFFFFu) / period)) {
                     timestamps.t[index].low = u32(round(f32(timestamp.low) * period));
                 } else {
@@ -99,8 +99,8 @@ namespace dawn_native {
                     timestamps.t[index].low = result;
                 }
 
-                # Get the nearest integer to the float result. For high 32-bits, the round
-                # function will greatly help reduce the accuracy loss of the final result.
+                // Get the nearest integer to the float result. For high 32-bits, the round
+                // function will greatly help reduce the accuracy loss of the final result.
                 timestamps.t[index].high = u32(round(f32(timestamp.high) * period)) + w;
             }
         )";

src/tests/end2end/DepthStencilStateTests.cpp

@@ -65,10 +65,10 @@ class DepthStencilStateTest : public DawnTest {
                 const pos : array<vec2<f32>, 6> = array<vec2<f32>, 6>(
                         vec2<f32>(-1.0,  1.0),
                         vec2<f32>(-1.0, -1.0),
-                        vec2<f32>( 1.0, -1.0), # front-facing
+                        vec2<f32>( 1.0, -1.0), // front-facing
                         vec2<f32>(-1.0,  1.0),
                         vec2<f32>( 1.0,  1.0),
-                        vec2<f32>( 1.0, -1.0)); # back-facing
+                        vec2<f32>( 1.0, -1.0)); // back-facing
                 Position = vec4<f32>(pos[VertexIndex], ubo.depth, 1.0);
             })");
 

src/tests/end2end/FirstIndexOffsetTests.cpp

@@ -119,7 +119,7 @@ void FirstIndexOffsetTests::TestImpl(DrawMode mode,
              [[offset(4)]] instance_index : u32;
          };
 
-        [[set(0), binding(0)]] var<storage_buffer> idx_vals : [[access(read_write)]] IndexVals;
+        [[group(0), binding(0)]] var<storage_buffer> idx_vals : [[access(read_write)]] IndexVals;
 
         [[stage(fragment)]] fn main() -> void  {
         )";