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// Copyright 2011 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 <stddef.h>
#include <memory>
#include <string>
#include <vector>
#include "base/macros.h"
#include "cc/cc_export.h"
#include "cc/layers/layer_collections.h"
#include "cc/quads/render_pass.h"
#include "cc/quads/shared_quad_state.h"
#include "cc/trees/occlusion.h"
#include "cc/trees/property_tree.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/geometry/rect_f.h"
#include "ui/gfx/transform.h"
namespace cc {
class AppendQuadsData;
class DamageTracker;
class FilterOperations;
class Occlusion;
class LayerImpl;
class LayerTreeImpl;
class CC_EXPORT RenderSurfaceImpl {
RenderSurfaceImpl(LayerTreeImpl* layer_tree_impl, int stable_effect_id);
virtual ~RenderSurfaceImpl();
// Returns the RenderSurfaceImpl that this render surface contributes to. Root
// render surface's render_target is itself.
RenderSurfaceImpl* render_target();
const RenderSurfaceImpl* render_target() const;
// Returns the rect that encloses the RenderSurfaceImpl including any
// reflection.
gfx::RectF DrawableContentRect() const;
void SetDrawOpacity(float opacity) {
draw_properties_.draw_opacity = opacity;
float draw_opacity() const { return draw_properties_.draw_opacity; }
SkBlendMode BlendMode() const;
bool UsesDefaultBlendMode() const;
void SetNearestOcclusionImmuneAncestor(const RenderSurfaceImpl* surface) {
nearest_occlusion_immune_ancestor_ = surface;
const RenderSurfaceImpl* nearest_occlusion_immune_ancestor() const {
return nearest_occlusion_immune_ancestor_;
SkColor GetDebugBorderColor() const;
float GetDebugBorderWidth() const;
void SetDrawTransform(const gfx::Transform& draw_transform) {
draw_properties_.draw_transform = draw_transform;
const gfx::Transform& draw_transform() const {
return draw_properties_.draw_transform;
void SetScreenSpaceTransform(const gfx::Transform& screen_space_transform) {
draw_properties_.screen_space_transform = screen_space_transform;
const gfx::Transform& screen_space_transform() const {
return draw_properties_.screen_space_transform;
void SetIsClipped(bool is_clipped) {
draw_properties_.is_clipped = is_clipped;
bool is_clipped() const { return draw_properties_.is_clipped; }
void SetClipRect(const gfx::Rect& clip_rect);
gfx::Rect clip_rect() const { return draw_properties_.clip_rect; }
// When false, the RenderSurface does not contribute to another target
// RenderSurface that is being drawn for the current frame. It could still be
// drawn to as a target, but its output will not be a part of any other
// surface.
bool contributes_to_drawn_surface() const {
return contributes_to_drawn_surface_;
void set_contributes_to_drawn_surface(bool contributes_to_drawn_surface) {
contributes_to_drawn_surface_ = contributes_to_drawn_surface;
void set_has_contributing_layer_that_escapes_clip(
bool contributing_layer_escapes_clip) {
has_contributing_layer_that_escapes_clip_ = contributing_layer_escapes_clip;
bool has_contributing_layer_that_escapes_clip() const {
return has_contributing_layer_that_escapes_clip_;
void CalculateContentRectFromAccumulatedContentRect(int max_texture_size);
void SetContentRectToViewport();
void SetContentRectForTesting(const gfx::Rect& rect);
gfx::Rect content_rect() const { return draw_properties_.content_rect; }
void ClearAccumulatedContentRect();
void AccumulateContentRectFromContributingLayer(
LayerImpl* contributing_layer);
void AccumulateContentRectFromContributingRenderSurface(
RenderSurfaceImpl* contributing_surface);
gfx::Rect accumulated_content_rect() const {
return accumulated_content_rect_;
const Occlusion& occlusion_in_content_space() const {
return occlusion_in_content_space_;
void set_occlusion_in_content_space(const Occlusion& occlusion) {
occlusion_in_content_space_ = occlusion;
LayerImplList& layer_list() { return layer_list_; }
void ClearLayerLists();
int id() const { return stable_effect_id_; }
LayerImpl* MaskLayer();
bool HasMask() const;
const FilterOperations& Filters() const;
const FilterOperations& BackgroundFilters() const;
gfx::PointF FiltersOrigin() const;
gfx::Transform SurfaceScale() const;
bool HasCopyRequest() const;
void ResetPropertyChangedFlags();
bool SurfacePropertyChanged() const;
bool SurfacePropertyChangedOnlyFromDescendant() const;
bool AncestorPropertyChanged() const;
void NoteAncestorPropertyChanged();
DamageTracker* damage_tracker() const { return damage_tracker_.get(); }
gfx::Rect GetDamageRect();
int GetRenderPassId();
std::unique_ptr<RenderPass> CreateRenderPass();
void AppendQuads(RenderPass* render_pass, AppendQuadsData* append_quads_data);
int TransformTreeIndex() const;
int ClipTreeIndex() const;
void set_effect_tree_index(int index) { effect_tree_index_ = index; }
int EffectTreeIndex() const;
const EffectNode* OwningEffectNode() const;
void SetContentRect(const gfx::Rect& content_rect);
gfx::Rect CalculateClippedAccumulatedContentRect();
gfx::Rect CalculateExpandedClipForFilters(
const gfx::Transform& target_to_surface);
void TileMaskLayer(RenderPass* render_pass,
SharedQuadState* shared_quad_state,
const gfx::Rect& visible_layer_rect);
LayerTreeImpl* layer_tree_impl_;
int stable_effect_id_;
int effect_tree_index_;
// Container for properties that render surfaces need to compute before they
// can be drawn.
struct DrawProperties {
float draw_opacity;
// Transforms from the surface's own space to the space of its target
// surface.
gfx::Transform draw_transform;
// Transforms from the surface's own space to the viewport.
gfx::Transform screen_space_transform;
// This is in the surface's own space.
gfx::Rect content_rect;
// This is in the space of the surface's target surface.
gfx::Rect clip_rect;
// True if the surface needs to be clipped by clip_rect.
bool is_clipped : 1;
DrawProperties draw_properties_;
// Is used to calculate the content rect from property trees.
gfx::Rect accumulated_content_rect_;
// Is used to decide if the surface is clipped.
bool has_contributing_layer_that_escapes_clip_ : 1;
bool surface_property_changed_ : 1;
bool ancestor_property_changed_ : 1;
bool contributes_to_drawn_surface_ : 1;
LayerImplList layer_list_;
Occlusion occlusion_in_content_space_;
// The nearest ancestor target surface that will contain the contents of this
// surface, and that ignores outside occlusion. This can point to itself.
const RenderSurfaceImpl* nearest_occlusion_immune_ancestor_;
std::unique_ptr<DamageTracker> damage_tracker_;
} // namespace cc