Tile Compression

cc/resources/resource_format.h

Index: cc/resources/resource_format.h
diff --git a/cc/resources/resource_format.h b/cc/resources/resource_format.h
index d785ab7382b8db450ed675580712d5b0675bc7fd..62321430e316b4879ab9215ed0ca7aeb2bb457c3 100644
--- a/cc/resources/resource_format.h
+++ b/cc/resources/resource_format.h
@@ -18,6 +18,10 @@ enum ResourceFormat {
   ALPHA_8,
   LUMINANCE_8,
   RGB_565,
+  ATC,
+  ATC_IA,
+  DXT1,
+  DXT5,
   ETC1,
   RED_8,
   RESOURCE_FORMAT_MAX = RED_8,
@@ -25,6 +29,19 @@ enum ResourceFormat {
 
 SkColorType ResourceFormatToSkColorType(ResourceFormat format);
 
+bool IsFormatCompressed(ResourceFormat format);
+
+enum ResourceFormatUsage {
+  FORMAT_USAGE_NATIVE,       // Fastest format. Also supported for GPU
+                             // rasterization.
+  FORMAT_USAGE_TRANSLUCENT,  // Memory efficient format that also supports alpha
+                             // channel.
+  FORMAT_USAGE_OPAQUE,       // Memory efficient format that only support color
+                             // channels.
+
+  NUM_RESOURCE_FORMAT_USAGE
+};
+
 }  // namespace cc
 
 #endif  // CC_RESOURCES_RESOURCE_FORMAT_H_