1 // Copyright 2011 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.
5 #include "cc/layers/render_surface_impl.h"
9 #include "base/logging.h"
10 #include "base/strings/stringprintf.h"
11 #include "cc/base/math_util.h"
12 #include "cc/debug/debug_colors.h"
13 #include "cc/layers/delegated_renderer_layer_impl.h"
14 #include "cc/layers/layer_impl.h"
15 #include "cc/layers/quad_sink.h"
16 #include "cc/layers/render_pass_sink.h"
17 #include "cc/quads/debug_border_draw_quad.h"
18 #include "cc/quads/render_pass.h"
19 #include "cc/quads/render_pass_draw_quad.h"
20 #include "cc/quads/shared_quad_state.h"
21 #include "cc/trees/damage_tracker.h"
22 #include "third_party/skia/include/core/SkImageFilter.h"
23 #include "ui/gfx/rect_conversions.h"
24 #include "ui/gfx/transform.h"
28 RenderSurfaceImpl::RenderSurfaceImpl(LayerImpl* owning_layer)
29 : owning_layer_(owning_layer),
30 surface_property_changed_(false),
31 draw_opacity_is_animating_(false),
32 target_surface_transforms_are_animating_(false),
33 screen_space_transforms_are_animating_(false),
35 contributes_to_drawn_surface_(false),
37 nearest_occlusion_immune_ancestor_(NULL),
38 target_render_surface_layer_index_history_(0),
39 current_layer_index_history_(0) {
40 damage_tracker_ = DamageTracker::Create();
43 RenderSurfaceImpl::~RenderSurfaceImpl() {}
45 gfx::RectF RenderSurfaceImpl::DrawableContentRect() const {
46 gfx::RectF drawable_content_rect =
47 MathUtil::MapClippedRect(draw_transform_, content_rect_);
48 if (owning_layer_->has_replica()) {
49 drawable_content_rect.Union(
50 MathUtil::MapClippedRect(replica_draw_transform_, content_rect_));
53 return drawable_content_rect;
56 int RenderSurfaceImpl::OwningLayerId() const {
57 return owning_layer_ ? owning_layer_->id() : 0;
61 void RenderSurfaceImpl::SetClipRect(const gfx::Rect& clip_rect) {
62 if (clip_rect_ == clip_rect)
65 surface_property_changed_ = true;
66 clip_rect_ = clip_rect;
69 bool RenderSurfaceImpl::ContentsChanged() const {
70 return !damage_tracker_->current_damage_rect().IsEmpty();
73 void RenderSurfaceImpl::SetContentRect(const gfx::Rect& content_rect) {
74 if (content_rect_ == content_rect)
77 surface_property_changed_ = true;
78 content_rect_ = content_rect;
81 bool RenderSurfaceImpl::SurfacePropertyChanged() const {
82 // Surface property changes are tracked as follows:
84 // - surface_property_changed_ is flagged when the clip_rect or content_rect
85 // change. As of now, these are the only two properties that can be affected
86 // by descendant layers.
88 // - all other property changes come from the owning layer (or some ancestor
89 // layer that propagates its change to the owning layer).
91 DCHECK(owning_layer_);
92 return surface_property_changed_ || owning_layer_->LayerPropertyChanged();
95 bool RenderSurfaceImpl::SurfacePropertyChangedOnlyFromDescendant() const {
96 return surface_property_changed_ && !owning_layer_->LayerPropertyChanged();
99 void RenderSurfaceImpl::AddContributingDelegatedRenderPassLayer(
101 DCHECK(std::find(layer_list_.begin(), layer_list_.end(), layer) !=
103 DelegatedRendererLayerImpl* delegated_renderer_layer =
104 static_cast<DelegatedRendererLayerImpl*>(layer);
105 contributing_delegated_render_pass_layer_list_.push_back(
106 delegated_renderer_layer);
109 void RenderSurfaceImpl::ClearLayerLists() {
111 contributing_delegated_render_pass_layer_list_.clear();
114 RenderPass::Id RenderSurfaceImpl::RenderPassId() {
115 int layer_id = owning_layer_->id();
117 DCHECK_GT(layer_id, 0);
118 return RenderPass::Id(layer_id, sub_id);
121 void RenderSurfaceImpl::AppendRenderPasses(RenderPassSink* pass_sink) {
123 i < contributing_delegated_render_pass_layer_list_.size();
125 DelegatedRendererLayerImpl* delegated_renderer_layer =
126 contributing_delegated_render_pass_layer_list_[i];
127 delegated_renderer_layer->AppendContributingRenderPasses(pass_sink);
130 scoped_ptr<RenderPass> pass = RenderPass::Create(layer_list_.size());
131 pass->SetNew(RenderPassId(),
133 gfx::IntersectRects(content_rect_,
134 damage_tracker_->current_damage_rect()),
135 screen_space_transform_);
136 pass_sink->AppendRenderPass(pass.Pass());
139 void RenderSurfaceImpl::AppendQuads(QuadSink* quad_sink,
140 AppendQuadsData* append_quads_data,
142 RenderPass::Id render_pass_id) {
143 DCHECK(!for_replica || owning_layer_->has_replica());
145 const gfx::Transform& draw_transform =
146 for_replica ? replica_draw_transform_ : draw_transform_;
147 gfx::Rect visible_content_rect =
148 quad_sink->UnoccludedContributingSurfaceContentRect(content_rect_,
150 if (visible_content_rect.IsEmpty())
153 SharedQuadState* shared_quad_state = quad_sink->CreateSharedQuadState();
154 shared_quad_state->SetAll(draw_transform,
155 content_rect_.size(),
160 owning_layer_->blend_mode());
162 if (owning_layer_->ShowDebugBorders()) {
163 SkColor color = for_replica ?
164 DebugColors::SurfaceReplicaBorderColor() :
165 DebugColors::SurfaceBorderColor();
166 float width = for_replica ?
167 DebugColors::SurfaceReplicaBorderWidth(
168 owning_layer_->layer_tree_impl()) :
169 DebugColors::SurfaceBorderWidth(
170 owning_layer_->layer_tree_impl());
171 scoped_ptr<DebugBorderDrawQuad> debug_border_quad =
172 DebugBorderDrawQuad::Create();
173 debug_border_quad->SetNew(
174 shared_quad_state, content_rect_, visible_content_rect, color, width);
175 quad_sink->Append(debug_border_quad.PassAs<DrawQuad>());
178 // TODO(shawnsingh): By using the same RenderSurfaceImpl for both the content
179 // and its reflection, it's currently not possible to apply a separate mask to
180 // the reflection layer or correctly handle opacity in reflections (opacity
181 // must be applied after drawing both the layer and its reflection). The
182 // solution is to introduce yet another RenderSurfaceImpl to draw the layer
183 // and its reflection in. For now we only apply a separate reflection mask if
184 // the contents don't have a mask of their own.
185 LayerImpl* mask_layer = owning_layer_->mask_layer();
187 (!mask_layer->DrawsContent() || mask_layer->bounds().IsEmpty()))
190 if (!mask_layer && for_replica) {
191 mask_layer = owning_layer_->replica_layer()->mask_layer();
193 (!mask_layer->DrawsContent() || mask_layer->bounds().IsEmpty()))
197 gfx::RectF mask_uv_rect(0.f, 0.f, 1.f, 1.f);
199 gfx::Vector2dF owning_layer_draw_scale =
200 MathUtil::ComputeTransform2dScaleComponents(
201 owning_layer_->draw_transform(), 1.f);
202 gfx::SizeF unclipped_mask_target_size = gfx::ScaleSize(
203 owning_layer_->content_bounds(),
204 owning_layer_draw_scale.x(),
205 owning_layer_draw_scale.y());
208 content_rect_.width() / unclipped_mask_target_size.width();
210 content_rect_.height() / unclipped_mask_target_size.height();
212 mask_uv_rect = gfx::RectF(
213 uv_scale_x * content_rect_.x() / content_rect_.width(),
214 uv_scale_y * content_rect_.y() / content_rect_.height(),
219 ResourceProvider::ResourceId mask_resource_id =
220 mask_layer ? mask_layer->ContentsResourceId() : 0;
221 gfx::Rect contents_changed_since_last_frame =
222 ContentsChanged() ? content_rect_ : gfx::Rect();
224 scoped_ptr<RenderPassDrawQuad> quad = RenderPassDrawQuad::Create();
225 quad->SetNew(shared_quad_state,
227 visible_content_rect,
231 contents_changed_since_last_frame,
233 owning_layer_->filters(),
234 owning_layer_->background_filters());
235 quad_sink->Append(quad.PassAs<DrawQuad>());