gpu/tools/compositor_model_bench/render_tree.h

   1 // Copyright (c) 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 // Data structures for representing parts of Chromium's composited layer tree
   6 // and a function to load it from the JSON configuration file
   7
   8 #ifndef GPU_TOOLS_COMPOSITOR_MODEL_BENCH_RENDER_TREE_H_
   9 #define GPU_TOOLS_COMPOSITOR_MODEL_BENCH_RENDER_TREE_H_
  10
  11 #include <string>
  12 #include <vector>
  13
  14 #include "base/compiler_specific.h"
  15 #include "base/memory/scoped_vector.h"
  16 #include "gpu/tools/compositor_model_bench/shaders.h"
  17 #include "ui/gl/gl_bindings.h"
  18 #include "ui/gl/gl_implementation.h"
  19
  20 // These are fairly arbitrary values based on how big my actual browser
  21 // window was.
  22 const int WINDOW_WIDTH = 1609;
  23 const int WINDOW_HEIGHT = 993;
  24
  25 struct Tile {
  26   int x;
  27   int y;
  28   int texID;
  29 };
  30
  31 struct Texture {
  32   int texID;
  33   int height;
  34   int width;
  35   GLenum format;
  36 };
  37
  38 GLenum TextureFormatFromString(const std::string& format);
  39 const char* TextureFormatName(GLenum format);
  40 int FormatBytesPerPixel(GLenum format);
  41
  42 class RenderNodeVisitor;
  43
  44 class RenderNode {
  45  public:
  46   RenderNode();
  47   virtual ~RenderNode();
  48   virtual void Accept(RenderNodeVisitor* v);
  49
  50   int layerID() {
  51     return layerID_;
  52   }
  53
  54   void set_layerID(int id) {
  55     layerID_ = id;
  56   }
  57
  58   int width() {
  59     return width_;
  60   }
  61
  62   void set_width(int width) {
  63     width_ = width;
  64   }
  65
  66   int height() {
  67     return height_;
  68   }
  69
  70   void set_height(int height) {
  71     height_ = height;
  72   }
  73
  74   bool drawsContent() {
  75     return drawsContent_;
  76   }
  77
  78   void set_drawsContent(bool draws) {
  79     drawsContent_ = draws;
  80   }
  81
  82   void set_targetSurface(int surface) {
  83     targetSurface_ = surface;
  84   }
  85
  86   float* transform() {
  87     return transform_;
  88   }
  89
  90   void set_transform(float* mat) {
  91     memcpy(reinterpret_cast<void*>(transform_),
  92            reinterpret_cast<void*>(mat),
  93            16 * sizeof(transform_[0]));
  94   }
  95
  96   void add_tile(Tile t) {
  97     tiles_.push_back(t);
  98   }
  99
 100   size_t num_tiles() {
 101     return tiles_.size();
 102   }
 103
 104   Tile* tile(size_t index) {
 105     return &tiles_[index];
 106   }
 107
 108   int tile_width() {
 109     return tile_width_;
 110   }
 111
 112   void set_tile_width(int width) {
 113     tile_width_ = width;
 114   }
 115
 116   int tile_height() {
 117     return tile_height_;
 118   }
 119
 120   void set_tile_height(int height) {
 121     tile_height_ = height;
 122   }
 123
 124  private:
 125   int layerID_;
 126   int width_;
 127   int height_;
 128   bool drawsContent_;
 129   int targetSurface_;
 130   float transform_[16];
 131   std::vector<Tile> tiles_;
 132   int tile_width_;
 133   int tile_height_;
 134 };
 135
 136 class ContentLayerNode : public RenderNode {
 137  public:
 138   ContentLayerNode();
 139   ~ContentLayerNode() override;
 140   void Accept(RenderNodeVisitor* v) override;
 141
 142   void set_skipsDraw(bool skips) {
 143     skipsDraw_ = skips;
 144   }
 145
 146   void add_child(RenderNode* child) {
 147     children_.push_back(child);
 148   }
 149
 150  private:
 151   ScopedVector<RenderNode> children_;
 152   bool skipsDraw_;
 153 };
 154
 155 class CCNode : public RenderNode {
 156  public:
 157   CCNode();
 158   ~CCNode() override;
 159
 160   void Accept(RenderNodeVisitor* v) override;
 161
 162   ShaderID vertex_shader() {
 163     return vertex_shader_;
 164   }
 165
 166   void set_vertex_shader(ShaderID shader) {
 167     vertex_shader_ = shader;
 168   }
 169
 170   ShaderID fragment_shader() {
 171     return fragment_shader_;
 172   }
 173
 174   void set_fragment_shader(ShaderID shader) {
 175     fragment_shader_ = shader;
 176   }
 177
 178   void add_texture(Texture t) {
 179     textures_.push_back(t);
 180   }
 181
 182   size_t num_textures() {
 183     return textures_.size();
 184   }
 185
 186   Texture* texture(size_t index) {
 187     return &textures_[index];
 188   }
 189
 190  private:
 191   ShaderID vertex_shader_;
 192   ShaderID fragment_shader_;
 193   std::vector<Texture> textures_;
 194 };
 195
 196 class RenderNodeVisitor {
 197  public:
 198   virtual ~RenderNodeVisitor();
 199
 200   virtual void BeginVisitRenderNode(RenderNode* v) = 0;
 201   virtual void BeginVisitContentLayerNode(ContentLayerNode* v);
 202   virtual void BeginVisitCCNode(CCNode* v);
 203   virtual void EndVisitRenderNode(RenderNode* v);
 204   virtual void EndVisitContentLayerNode(ContentLayerNode* v);
 205   virtual void EndVisitCCNode(CCNode* v);
 206 };
 207
 208 RenderNode* BuildRenderTreeFromFile(const base::FilePath& path);
 209
 210 #endif  // GPU_TOOLS_COMPOSITOR_MODEL_BENCH_RENDER_TREE_H_
 211