Allow one-copy task tile worker pool to use compressed textures.

cc/resources/resource_format.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/resources/resource_format.h"
 
 #include "third_party/khronos/GLES2/gl2.h"
 #include "third_party/khronos/GLES2/gl2ext.h"
 
 namespace cc {
@@ skipping 10 matching lines @@
     case LUMINANCE_8:
     case RGB_565:
     case RED_8:
       NOTREACHED();
       break;
   }
   NOTREACHED();
   return kN32_SkColorType;
 }
 
+ResourceFormat SkColorTypeToResourceFormat(SkColorType color_type) {
+  switch (color_type) {
+    case kARGB_4444_SkColorType:
+      return RGBA_4444;
+    case kAlpha_8_SkColorType:
+      return ALPHA_8;
+    case kRGB_565_SkColorType:
+      return RGB_565;
+    case kRGBA_8888_SkColorType:
+      return RGBA_8888;
+    case kBGRA_8888_SkColorType:
+      return BGRA_8888;
+    case kGray_8_SkColorType:
+    case kIndex_8_SkColorType:
+    case kUnknown_SkColorType:
+      NOTREACHED();
+      break;
+  }
+  NOTREACHED();
+  return RGBA_8888;
+}
+
 int BitsPerPixel(ResourceFormat format) {
   switch (format) {
     case BGRA_8888:
     case RGBA_8888:
       return 32;
     case RGBA_4444:
     case RGB_565:
       return 16;
     case ALPHA_8:
     case LUMINANCE_8:
@@ skipping 49 matching lines @@
 gfx::BufferFormat BufferFormat(ResourceFormat format) {
   switch (format) {
     case BGRA_8888:
       return gfx::BufferFormat::BGRA_8888;
     case RED_8:
       return gfx::BufferFormat::R_8;
     case RGBA_4444:
       return gfx::BufferFormat::RGBA_4444;
     case RGBA_8888:
       return gfx::BufferFormat::RGBA_8888;
+    case ETC1:
+      return gfx::BufferFormat::ETC1;
     case ALPHA_8:
     case LUMINANCE_8:
     case RGB_565:
-    case ETC1:
       break;
   }
   NOTREACHED();
   return gfx::BufferFormat::RGBA_8888;
 }
 
+ResourceFormat BufferFormatToResourceFormat(gfx::BufferFormat format) {
+  switch (format) {
+    case gfx::BufferFormat::RGBA_4444:
+      return RGBA_4444;
+    case gfx::BufferFormat::RGBA_8888:
+      return RGBA_8888;
+    case gfx::BufferFormat::BGRA_8888:
+      return BGRA_8888;
+    case gfx::BufferFormat::ETC1:
+      return ETC1;
+    case gfx::BufferFormat::ATC:
+    case gfx::BufferFormat::ATCIA:
+    case gfx::BufferFormat::DXT1:
+    case gfx::BufferFormat::DXT5:
+    case gfx::BufferFormat::R_8:
+    case gfx::BufferFormat::RGBX_8888:
+    case gfx::BufferFormat::BGRX_8888:
+    case gfx::BufferFormat::YUV_420:
+    case gfx::BufferFormat::YUV_420_BIPLANAR:
+    case gfx::BufferFormat::UYVY_422:
+      break;
+  }
+  NOTREACHED();
+  return RGBA_8888;
+}
+
+bool IsResourceFormatCompressed(ResourceFormat format) {
+  return format == ETC1;
+}
+
+bool DoesResourceFormatSupportAlpha(ResourceFormat format) {
+  switch (format) {
+    case RGBA_4444:
+    case RGBA_8888:
+    case BGRA_8888:
+    case ALPHA_8:
+      return true;
+    case LUMINANCE_8:
+    case RGB_565:
+    case ETC1:
+    case RED_8:
+      return false;
+  }
+  NOTREACHED();
+  return false;
+}
+
 }  // namespace cc