Add missing transform into DelegatedRendererLayerImpl::AppendRenderPassQuads.

cc/layers/delegated_renderer_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/layers/delegated_renderer_layer_impl.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 418 matching lines @@
           }
           output_shared_quad_state->clip_rect = clip_rect;
           output_shared_quad_state->is_clipped = true;
         }
 
         output_shared_quad_state->opacity *= draw_opacity();
       }
     }
     DCHECK(output_shared_quad_state);
 
+    gfx::Transform quad_content_to_delegated_target_space =
+        output_shared_quad_state->content_to_target_transform;
+    quad_content_to_delegated_target_space.ConcatTransform(

[danakj, 2014/08/08 13:45:05]

to avoid these matrix mults in most cases, can you only do this when
|is_root_delegated_render_pass| is false? (you'll have to move that var out one
nested level to re-use it.)

[hartmanng, 2014/08/08 14:00:02]

Done.

+        render_pass->transform_to_root_target);
+    quad_content_to_delegated_target_space.ConcatTransform(draw_transform());
+
     gfx::Rect quad_visible_rect = occlusion_tracker.UnoccludedContentRect(
-        delegated_quad->visible_rect,
-        output_shared_quad_state->content_to_target_transform);
+        delegated_quad->visible_rect, quad_content_to_delegated_target_space);
+
     if (quad_visible_rect.IsEmpty())
       continue;
 
     if (delegated_quad->material != DrawQuad::RENDER_PASS) {
       DrawQuad* output_quad = render_pass->CopyFromAndAppendDrawQuad(
           delegated_quad, output_shared_quad_state);
       output_quad->visible_rect = quad_visible_rect;
     } else {
       RenderPass::Id delegated_contributing_render_pass_id =
           RenderPassDrawQuad::MaterialCast(delegated_quad)->render_pass_id;
@@ skipping 31 matching lines @@
   if (own_child_id_) {
     ResourceProvider* provider = layer_tree_impl()->resource_provider();
     provider->DestroyChild(child_id_);
   }
 
   resources_.clear();
   child_id_ = 0;
 }
 
 }  // namespace cc