Roll src/third_party/dawn/ ae2b9f472..f463a2029 (1 commit)

Also contains the implementation of
GPUBindGroupLayoutBinding.textureComponentType that was newly introduced
in Dawn.

https://dawn.googlesource.com/dawn.git/+log/ae2b9f4720a7..f463a2029142

$ git log ae2b9f472..f463a2029 --date=short --no-merges --format='%ad %ae %s'
2019-08-21 cwallez Add BGLBinding::textureComponentType

Created with:
  roll-dep src/third_party/dawn

Change-Id: Ia40de88d6b2dda7a32a265b3fabfb1b0ae9b906e
Bug: dawn:128
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1765471
Commit-Queue: Kai Ninomiya <kainino@chromium.org>
Reviewed-by: Kai Ninomiya <kainino@chromium.org>
Cr-Commit-Position: refs/heads/master@{#689491}

DEPS

@@ -280,7 +280,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.
-  'dawn_revision': 'ae2b9f4720a7286e001d63939b9deaf2731ccc9f',
+  'dawn_revision': 'f463a20291420babb886157bf8f24f179804a893',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.

third_party/blink/renderer/modules/webgpu/dawn_conversions.cc

@@ -36,6 +36,22 @@ DawnBindingType AsDawnEnum<DawnBindingType>(const WTF::String& webgpu_enum) {
   return DAWN_BINDING_TYPE_FORCE32;
 }
 
+template <>
+DawnTextureComponentType AsDawnEnum<DawnTextureComponentType>(
+    const WTF::String& webgpu_enum) {
+  if (webgpu_enum == "float") {
+    return DAWN_TEXTURE_COMPONENT_TYPE_FLOAT;
+  }
+  if (webgpu_enum == "uint") {
+    return DAWN_TEXTURE_COMPONENT_TYPE_UINT;
+  }
+  if (webgpu_enum == "sint") {
+    return DAWN_TEXTURE_COMPONENT_TYPE_SINT;
+  }
+  NOTREACHED();
+  return DAWN_TEXTURE_COMPONENT_TYPE_FORCE32;
+}
+
 template <>
 DawnCompareFunction AsDawnEnum<DawnCompareFunction>(
     const WTF::String& webgpu_enum) {

third_party/blink/renderer/modules/webgpu/gpu_bind_group_layout.cc

@@ -12,12 +12,14 @@ namespace blink {
 
 DawnBindGroupLayoutBinding AsDawnType(
     const GPUBindGroupLayoutBinding* webgpu_binding) {
-  DawnBindGroupLayoutBinding dawn_binding;
+  DawnBindGroupLayoutBinding dawn_binding = {};
 
   dawn_binding.binding = webgpu_binding->binding();
   dawn_binding.type = AsDawnEnum<DawnBindingType>(webgpu_binding->type());
   dawn_binding.visibility =
       AsDawnEnum<DawnShaderStageBit>(webgpu_binding->visibility());
+  dawn_binding.textureComponentType = AsDawnEnum<DawnTextureComponentType>(
+      webgpu_binding->textureComponentType());
   dawn_binding.multisampled = webgpu_binding->multisampled();
   dawn_binding.dynamic = webgpu_binding->dynamic();
 

third_party/blink/renderer/modules/webgpu/gpu_bind_group_layout_binding.idl

@@ -8,6 +8,7 @@ dictionary GPUBindGroupLayoutBinding {
     required unsigned long binding;
     required GPUShaderStageFlags visibility;
     required GPUBindingType type;
+    GPUTextureComponentType textureComponentType = "float";
     boolean multisampled = false;
     boolean dynamic = false;
 };
@@ -19,3 +20,9 @@ enum GPUBindingType {
     "sampler",
     "sampled-texture",
 };
+
+enum GPUTextureComponentType {
+    "float",
+    "sint",
+    "uint"
+};