Enable RGBA_4444 in GpuRasterBufferProvider

cc/resources/resource_provider.cc

 // Copyright 2012 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_provider.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 468 matching lines @@
   for (ResourceMap::const_iterator itr = resources_.begin();
        itr != resources_.end(); ++itr) {
     DCHECK(!IsGpuResourceType(itr->second.type));
   }
 #endif  // DCHECK_IS_ON()
 
   texture_id_allocator_ = nullptr;
   gl->Finish();
 }
 
-bool ResourceProvider::IsResourceFormatSupported(ResourceFormat format) const {
+bool ResourceProvider::IsTextureFormatSupported(ResourceFormat format) const {
   gpu::Capabilities caps;
   if (compositor_context_provider_)
     caps = compositor_context_provider_->ContextCapabilities();
 
   switch (format) {
     case ALPHA_8:
     case RGBA_4444:
     case RGBA_8888:
     case RGB_565:
     case LUMINANCE_8:
       return true;
     case BGRA_8888:
       return caps.texture_format_bgra8888;
     case ETC1:
       return caps.texture_format_etc1;
     case RED_8:
       return caps.texture_rg;
     case LUMINANCE_F16:
+    case RGBA_F16:
       return caps.texture_half_float_linear;
+  }
+
+  NOTREACHED();
+  return false;
+}
+
+bool ResourceProvider::IsRenderBufferFormatSupported(
+    ResourceFormat format) const {
+  gpu::Capabilities caps;
+  if (compositor_context_provider_)
+    caps = compositor_context_provider_->ContextCapabilities();
+
+  switch (format) {
+    case RGBA_4444:
+    case RGBA_8888:
+    case RGB_565:
+      return true;
+    case BGRA_8888:
+      return caps.render_buffer_format_bgra8888;
     case RGBA_F16:
       // TODO(ccameron): This will always return false on pixel tests, which
       // makes it un-test-able until we upgrade Mesa.
       // https://crbug.com/687720
       return caps.texture_half_float_linear &&
              caps.color_buffer_half_float_rgba;
+    case LUMINANCE_8:
+    case ALPHA_8:
+    case RED_8:
+    case ETC1:
+    case LUMINANCE_F16:
+      // We don't currently render into these formats. If we need to render into
+      // these eventually, we should expand this logic.
+      return false;
   }
 
   NOTREACHED();
   return false;
 }
 
 bool ResourceProvider::InUseByConsumer(ResourceId id) {
   Resource* resource = GetResource(id);
   return resource->lock_for_read_count > 0 || resource->exported_count > 0 ||
          resource->lost;
@@ skipping 1617 matching lines @@
 
     const int kImportance = 2;
     pmd->CreateSharedGlobalAllocatorDump(guid);
     pmd->AddOwnershipEdge(dump->guid(), guid, kImportance);
   }
 
   return true;
 }
 
 }  // namespace cc