cc/trees/quad_culler.cc

   1 // Copyright 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "cc/trees/quad_culler.h"
   6
   7 #include "cc/debug/debug_colors.h"
   8 #include "cc/layers/append_quads_data.h"
   9 #include "cc/layers/layer_impl.h"
  10 #include "cc/quads/debug_border_draw_quad.h"
  11 #include "cc/quads/render_pass.h"
  12 #include "cc/quads/render_pass_draw_quad.h"
  13 #include "cc/trees/occlusion_tracker.h"
  14 #include "third_party/skia/include/core/SkColor.h"
  15 #include "ui/gfx/transform.h"
  16
  17 namespace cc {
  18
  19 QuadCuller::QuadCuller(RenderPass* render_pass,
  20                        const LayerImpl* layer,
  21                        const OcclusionTracker<LayerImpl>& occlusion_tracker)
  22     : render_pass_(render_pass),
  23       layer_(layer),
  24       occlusion_tracker_(occlusion_tracker),
  25       current_shared_quad_state_(NULL) {
  26 }
  27
  28 SharedQuadState* QuadCuller::CreateSharedQuadState() {
  29   current_shared_quad_state_ = render_pass_->CreateAndAppendSharedQuadState();
  30   return current_shared_quad_state_;
  31 }
  32
  33 gfx::Rect QuadCuller::UnoccludedContentRect(
  34     const gfx::Rect& content_rect,
  35     const gfx::Transform& draw_transform) {
  36   return occlusion_tracker_.UnoccludedContentRect(
  37       layer_->render_target(), content_rect, draw_transform);
  38 }
  39
  40 gfx::Rect QuadCuller::UnoccludedContributingSurfaceContentRect(
  41     const gfx::Rect& content_rect,
  42     const gfx::Transform& draw_transform) {
  43   return occlusion_tracker_.UnoccludedContributingSurfaceContentRect(
  44       layer_, content_rect, draw_transform);
  45 }
  46
  47 void QuadCuller::Append(scoped_ptr<DrawQuad> draw_quad) {
  48   DCHECK(draw_quad->shared_quad_state == current_shared_quad_state_);
  49   DCHECK(!render_pass_->shared_quad_state_list.empty());
  50   DCHECK(render_pass_->shared_quad_state_list.back() ==
  51          current_shared_quad_state_);
  52   DCHECK(!draw_quad->rect.IsEmpty());
  53   DCHECK(!draw_quad->visible_rect.IsEmpty());
  54   render_pass_->quad_list.push_back(draw_quad.Pass());
  55 }
  56
  57 }  // namespace cc