cc: Pass Occlusion instead of OcclusionTracker to LayerImpls

cc/layers/nine_patch_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/nine_patch_layer_impl.h"
 
 #include "base/strings/stringprintf.h"
 #include "base/values.h"
 #include "cc/base/math_util.h"
 #include "cc/quads/texture_draw_quad.h"
 #include "cc/trees/layer_tree_impl.h"
-#include "cc/trees/occlusion_tracker.h"
+#include "cc/trees/occlusion.h"
 #include "ui/gfx/rect_f.h"
 
 namespace cc {
 
 NinePatchLayerImpl::NinePatchLayerImpl(LayerTreeImpl* tree_impl, int id)
     : UIResourceLayerImpl(tree_impl, id),
       fill_center_(false) {}
 
 NinePatchLayerImpl::~NinePatchLayerImpl() {}
 
@@ skipping 52 matching lines @@
 
   // |aperture| is in image space.  It cannot exceed the bounds of the bitmap.
   DCHECK(!image_aperture_.size().IsEmpty());
   DCHECK(gfx::Rect(image_bounds_).Contains(image_aperture_))
       << "image_bounds_ " << gfx::Rect(image_bounds_).ToString()
       << " image_aperture_ " << image_aperture_.ToString();
 }
 
 void NinePatchLayerImpl::AppendQuads(
     RenderPass* render_pass,
-    const OcclusionTracker<LayerImpl>& occlusion_tracker,
+    const Occlusion& occlusion_in_content_space,
     AppendQuadsData* append_quads_data) {
   CheckGeometryLimitations();
   SharedQuadState* shared_quad_state =
       render_pass->CreateAndAppendSharedQuadState();
   PopulateSharedQuadState(shared_quad_state);
 
   AppendDebugBorderQuad(
       render_pass, content_bounds(), shared_quad_state, append_quads_data);
 
   if (!ui_resource_id_)
@@ skipping 110 matching lines @@
                        uv_top_left.bottom(),
                        uv_top.width(),
                        uv_left.height());
 
   // Nothing is opaque here.
   // TODO(danakj): Should we look at the SkBitmaps to determine opaqueness?
   gfx::Rect opaque_rect;
   gfx::Rect visible_rect;
   const float vertex_opacity[] = {1.0f, 1.0f, 1.0f, 1.0f};
 
-  Occlusion occlusion =
-      occlusion_tracker.GetCurrentOcclusionForLayer(draw_transform());
-
-  visible_rect = occlusion.GetUnoccludedContentRect(layer_top_left);
+  visible_rect =
+      occlusion_in_content_space.GetUnoccludedContentRect(layer_top_left);
   if (!visible_rect.IsEmpty()) {
     TextureDrawQuad* quad =
         render_pass->CreateAndAppendDrawQuad<TextureDrawQuad>();
     quad->SetNew(shared_quad_state,
                  layer_top_left,
                  opaque_rect,
                  visible_rect,
                  resource,
                  premultiplied_alpha,
                  uv_top_left.origin(),
                  uv_top_left.bottom_right(),
                  SK_ColorTRANSPARENT,
                  vertex_opacity,
                  flipped);
   }
 
-  visible_rect = occlusion.GetUnoccludedContentRect(layer_top_right);
+  visible_rect =
+      occlusion_in_content_space.GetUnoccludedContentRect(layer_top_right);
   if (!visible_rect.IsEmpty()) {
     TextureDrawQuad* quad =
         render_pass->CreateAndAppendDrawQuad<TextureDrawQuad>();
     quad->SetNew(shared_quad_state,
                  layer_top_right,
                  opaque_rect,
                  visible_rect,
                  resource,
                  premultiplied_alpha,
                  uv_top_right.origin(),
                  uv_top_right.bottom_right(),
                  SK_ColorTRANSPARENT,
                  vertex_opacity,
                  flipped);
   }
 
-  visible_rect = occlusion.GetUnoccludedContentRect(layer_bottom_left);
+  visible_rect =
+      occlusion_in_content_space.GetUnoccludedContentRect(layer_bottom_left);
   if (!visible_rect.IsEmpty()) {
     TextureDrawQuad* quad =
         render_pass->CreateAndAppendDrawQuad<TextureDrawQuad>();
     quad->SetNew(shared_quad_state,
                  layer_bottom_left,
                  opaque_rect,
                  visible_rect,
                  resource,
                  premultiplied_alpha,
                  uv_bottom_left.origin(),
                  uv_bottom_left.bottom_right(),
                  SK_ColorTRANSPARENT,
                  vertex_opacity,
                  flipped);
   }
 
-  visible_rect = occlusion.GetUnoccludedContentRect(layer_bottom_right);
+  visible_rect =
+      occlusion_in_content_space.GetUnoccludedContentRect(layer_bottom_right);
   if (!visible_rect.IsEmpty()) {
     TextureDrawQuad* quad =
         render_pass->CreateAndAppendDrawQuad<TextureDrawQuad>();
     quad->SetNew(shared_quad_state,
                  layer_bottom_right,
                  opaque_rect,
                  visible_rect,
                  resource,
                  premultiplied_alpha,
                  uv_bottom_right.origin(),
                  uv_bottom_right.bottom_right(),
                  SK_ColorTRANSPARENT,
                  vertex_opacity,
                  flipped);
   }
 
-  visible_rect = occlusion.GetUnoccludedContentRect(layer_top);
+  visible_rect = occlusion_in_content_space.GetUnoccludedContentRect(layer_top);
   if (!visible_rect.IsEmpty()) {
     TextureDrawQuad* quad =
         render_pass->CreateAndAppendDrawQuad<TextureDrawQuad>();
     quad->SetNew(shared_quad_state,
                  layer_top,
                  opaque_rect,
                  visible_rect,
                  resource,
                  premultiplied_alpha,
                  uv_top.origin(),
                  uv_top.bottom_right(),
                  SK_ColorTRANSPARENT,
                  vertex_opacity,
                  flipped);
   }
 
-  visible_rect = occlusion.GetUnoccludedContentRect(layer_left);
+  visible_rect =
+      occlusion_in_content_space.GetUnoccludedContentRect(layer_left);
   if (!visible_rect.IsEmpty()) {
     TextureDrawQuad* quad =
         render_pass->CreateAndAppendDrawQuad<TextureDrawQuad>();
     quad->SetNew(shared_quad_state,
                  layer_left,
                  opaque_rect,
                  visible_rect,
                  resource,
                  premultiplied_alpha,
                  uv_left.origin(),
                  uv_left.bottom_right(),
                  SK_ColorTRANSPARENT,
                  vertex_opacity,
                  flipped);
   }
 
-  visible_rect = occlusion.GetUnoccludedContentRect(layer_right);
+  visible_rect =
+      occlusion_in_content_space.GetUnoccludedContentRect(layer_right);
   if (!visible_rect.IsEmpty()) {
     TextureDrawQuad* quad =
         render_pass->CreateAndAppendDrawQuad<TextureDrawQuad>();
     quad->SetNew(shared_quad_state,
                  layer_right,
                  opaque_rect,
                  layer_right,
                  resource,
                  premultiplied_alpha,
                  uv_right.origin(),
                  uv_right.bottom_right(),
                  SK_ColorTRANSPARENT,
                  vertex_opacity,
                  flipped);
   }
 
-  visible_rect = occlusion.GetUnoccludedContentRect(layer_bottom);
+  visible_rect =
+      occlusion_in_content_space.GetUnoccludedContentRect(layer_bottom);
   if (!visible_rect.IsEmpty()) {
     TextureDrawQuad* quad =
         render_pass->CreateAndAppendDrawQuad<TextureDrawQuad>();
     quad->SetNew(shared_quad_state,
                  layer_bottom,
                  opaque_rect,
                  visible_rect,
                  resource,
                  premultiplied_alpha,
                  uv_bottom.origin(),
                  uv_bottom.bottom_right(),
                  SK_ColorTRANSPARENT,
                  vertex_opacity,
                  flipped);
   }
 
   if (fill_center_) {
-    visible_rect = occlusion.GetUnoccludedContentRect(layer_center);
+    visible_rect =
+        occlusion_in_content_space.GetUnoccludedContentRect(layer_center);
     if (!visible_rect.IsEmpty()) {
       TextureDrawQuad* quad =
           render_pass->CreateAndAppendDrawQuad<TextureDrawQuad>();
       quad->SetNew(shared_quad_state,
                    layer_center,
                    opaque_rect,
                    visible_rect,
                    resource,
                    premultiplied_alpha,
                    uv_center.origin(),
@@ skipping 25 matching lines @@
   result->Set("ImageBounds", list);
 
   result->Set("Border", MathUtil::AsValue(border_).release());
 
   result->SetBoolean("FillCenter", fill_center_);
 
   return result;
 }
 
 }  // namespace cc