Tile Compression

cc/resources/resource_format.cc

Index: cc/resources/resource_format.cc
diff --git a/cc/resources/resource_format.cc b/cc/resources/resource_format.cc
index 45581b800f140f3b6725a6bae4959686e66f03d0..a0cb0836738ad268df8d6554e6515d41374e0228 100644
--- a/cc/resources/resource_format.cc
+++ b/cc/resources/resource_format.cc
@@ -13,6 +13,10 @@ SkColorType ResourceFormatToSkColorType(ResourceFormat format) {
     case RGBA_8888:
     case BGRA_8888:
       return kN32_SkColorType;
+    case ATC:
+    case ATC_IA:
+    case DXT1:
+    case DXT5:
     case ETC1:
     case ALPHA_8:
     case LUMINANCE_8:
@@ -25,4 +29,17 @@ SkColorType ResourceFormatToSkColorType(ResourceFormat format) {
   return kN32_SkColorType;
 }
 
+bool IsFormatCompressed(ResourceFormat format) {
+  switch (format) {
+    case ATC:
+    case ATC_IA:
+    case DXT1:
+    case DXT5:
+    case ETC1:
+      return true;
+    default:
+      return false;
+  }
+}
+
 }  // namespace cc