gpu/tools/compositor_model_bench/shaders.h

   1 // Copyright (c) 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.
   4
   5 // Shaders from Chromium and an interface for setting them up
   6
   7 #ifndef GPU_TOOLS_COMPOSITOR_MODEL_BENCH_SHADERS_H_
   8 #define GPU_TOOLS_COMPOSITOR_MODEL_BENCH_SHADERS_H_
   9
  10 #include <string>
  11
  12 // Forward declarations.
  13 class CCNode;
  14 class ContentLayerNode;
  15
  16 typedef unsigned int GLuint;
  17
  18 enum ShaderID {
  19   SHADER_UNRECOGNIZED = 0,
  20   VERTEX_SHADER_POS_TEX_YUV_STRETCH,
  21   VERTEX_SHADER_POS_TEX,
  22   VERTEX_SHADER_POS_TEX_TRANSFORM,
  23   FRAGMENT_SHADER_YUV_VIDEO,
  24   FRAGMENT_SHADER_RGBA_TEX_FLIP_ALPHA,
  25   FRAGMENT_SHADER_RGBA_TEX_ALPHA,
  26   SHADER_ID_MAX
  27 };
  28
  29 ShaderID ShaderIDFromString(std::string name);
  30 std::string ShaderNameFromID(ShaderID id);
  31
  32 void ConfigAndActivateShaderForNode(CCNode* n);
  33
  34 // Call once to set up the parameters for an entire tiled layer, then use
  35 // DrawTileQuad for each tile to be drawn.
  36 void ConfigAndActivateShaderForTiling(ContentLayerNode* n);
  37
  38 // One-off function to set up global VBO's that will be used every time
  39 // we want to draw a quad.
  40 void InitBuffers();
  41
  42 // Per-frame initialization of the VBO's (to replicate behavior in Chrome.)
  43 void BeginFrame();
  44
  45 // Draw the quad in those VBO's.
  46 void DrawQuad(float width, float height);
  47
  48 // Draw the quad in those VBO's for an individual tile within a tiled layer.
  49 // x and y give the 2D index of the tile.
  50 void DrawTileQuad(GLuint texID, int x, int y);
  51
  52 #endif  // GPU_TOOLS_COMPOSITOR_MODEL_BENCH_SHADERS_H_