cc: Make the HUD allocate a new texture when the current one is in use by the parent compositor.

cc/heads_up_display_layer_impl.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/heads_up_display_layer_impl.h"
 
 #include <limits>
 
 #include "base/stringprintf.h"
 #include "cc/debug_colors.h"
@@ skipping 53 matching lines @@
     m_fontAtlas = fontAtlas.Pass();
 }
 
 void HeadsUpDisplayLayerImpl::willDraw(ResourceProvider* resourceProvider)
 {
     LayerImpl::willDraw(resourceProvider);
 
     if (!m_hudTexture)
         m_hudTexture = ScopedResource::create(resourceProvider);
 
-    // FIXME: Scale the HUD by deviceScale to make it more friendly under high DPI.
+    // TODO(danakj): Scale the HUD by deviceScale to make it more friendly under high DPI.
 
-    if (m_hudTexture->size() != bounds())
+    // TODO(danakj): The HUD could swap between two textures instead of creating a texture every frame in ubercompositor.
+    if (m_hudTexture->size() != bounds() || resourceProvider->inUseByConsumer(m_hudTexture->id()))
         m_hudTexture->Free();
 
     if (!m_hudTexture->id())
         m_hudTexture->Allocate(bounds(), GL_RGBA, ResourceProvider::TextureUsageAny);
 }
 
 void HeadsUpDisplayLayerImpl::appendQuads(QuadSink& quadSink, AppendQuadsData& appendQuadsData)
 {
     if (!m_hudTexture->id())
         return;
@@ skipping 289 matching lines @@
 
     canvas->restore();
 }
 
 const char* HeadsUpDisplayLayerImpl::layerTypeAsString() const
 {
     return "HeadsUpDisplayLayer";
 }
 
 }  // namespace cc