WebGPU: Add all BC formats to Blink

This patch adds all BC formats to Blink so that they can be used when
the extension "textureCompressionBC" is enabled.

BUG=chromium:996713

Change-Id: Ic35e9b6570d12273d09c8e688718509b4a88999a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1975299Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Austin Eng <enga@chromium.org>
Commit-Queue: Jiawei Shao <jiawei.shao@intel.com>
Cr-Commit-Position: refs/heads/master@{#726613}

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

@@ -221,6 +221,50 @@ WGPUTextureFormat AsDawnEnum<WGPUTextureFormat>(
     return WGPUTextureFormat_Depth24PlusStencil8;
   }
 
+  // Block Compression (BC) formats
+  if (webgpu_enum == "bc1-rgba-unorm") {
+    return WGPUTextureFormat_BC1RGBAUnorm;
+  }
+  if (webgpu_enum == "bc1-rgba-unorm-srgb") {
+    return WGPUTextureFormat_BC1RGBAUnormSrgb;
+  }
+  if (webgpu_enum == "bc2-rgba-unorm") {
+    return WGPUTextureFormat_BC2RGBAUnorm;
+  }
+  if (webgpu_enum == "bc2-rgba-unorm-srgb") {
+    return WGPUTextureFormat_BC2RGBAUnormSrgb;
+  }
+  if (webgpu_enum == "bc3-rgba-unorm") {
+    return WGPUTextureFormat_BC3RGBAUnorm;
+  }
+  if (webgpu_enum == "bc3-rgba-unorm-srgb") {
+    return WGPUTextureFormat_BC3RGBAUnormSrgb;
+  }
+  if (webgpu_enum == "bc4-r-unorm") {
+    return WGPUTextureFormat_BC4RUnorm;
+  }
+  if (webgpu_enum == "bc4-r-snorm") {
+    return WGPUTextureFormat_BC4RSnorm;
+  }
+  if (webgpu_enum == "bc5-rg-unorm") {
+    return WGPUTextureFormat_BC5RGUnorm;
+  }
+  if (webgpu_enum == "bc5-rg-snorm") {
+    return WGPUTextureFormat_BC5RGSnorm;
+  }
+  if (webgpu_enum == "bc6h-rgb-ufloat") {
+    return WGPUTextureFormat_BC6HRGBUfloat;
+  }
+  if (webgpu_enum == "bc6h-rgb-sfloat") {
+    return WGPUTextureFormat_BC6HRGBSfloat;
+  }
+  if (webgpu_enum == "bc7-rgba-unorm") {
+    return WGPUTextureFormat_BC7RGBAUnorm;
+  }
+  if (webgpu_enum == "bc7-rgba-unorm-srgb") {
+    return WGPUTextureFormat_BC7RGBAUnormSrgb;
+  }
+
   return WGPUTextureFormat_Force32;
 }
 

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

@@ -65,5 +65,20 @@ enum GPUTextureFormat {
     /* Depth / Stencil formats */
     "depth32float",
     "depth24plus",
-    "depth24plus-stencil8"
+    "depth24plus-stencil8",
+    /* Block Compression (BC) formats */
+    "bc1-rgba-unorm",
+    "bc1-rgba-unorm-srgb",
+    "bc2-rgba-unorm",
+    "bc2-rgba-unorm-srgb",
+    "bc3-rgba-unorm",
+    "bc3-rgba-unorm-srgb",
+    "bc4-r-unorm",
+    "bc4-r-snorm",
+    "bc5-rg-unorm",
+    "bc5-rg-snorm",
+    "bc6h-rgb-ufloat",
+    "bc6h-rgb-sfloat",
+    "bc7-rgba-unorm",
+    "bc7-rgba-unorm-srgb"
 };