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 #ifndef CC_OUTPUT_GL_RENDERER_DRAW_CACHE_H_ 6 #define CC_OUTPUT_GL_RENDERER_DRAW_CACHE_H_ 7 8 #include <vector> 9 10 #include "base/basictypes.h" 11 #include "third_party/skia/include/core/SkColor.h" 12 13 namespace cc { 14 15 // Collects 4 floats at a time for easy upload to GL. 16 struct Float4 { 17 float data[4]; 18 }; 19 20 // Collects 16 floats at a time for easy upload to GL. 21 struct Float16 { 22 float data[16]; 23 }; 24 25 // A cache for storing textured quads to be drawn. Stores the minimum required 26 // data to tell if two back to back draws only differ in their transform. Quads 27 // that only differ by transform may be coalesced into a single draw call. 28 struct TexturedQuadDrawCache { 29 TexturedQuadDrawCache(); 30 ~TexturedQuadDrawCache(); 31 32 // Values tracked to determine if textured quads may be coalesced. 33 int program_id; 34 int resource_id; 35 bool needs_blending; 36 SkColor background_color; 37 38 // Information about the program binding that is required to draw. 39 int uv_xform_location; 40 int background_color_location; 41 int vertex_opacity_location; 42 int matrix_location; 43 int sampler_location; 44 45 // A cache for the coalesced quad data. 46 std::vector<Float4> uv_xform_data; 47 std::vector<float> vertex_opacity_data; 48 std::vector<Float16> matrix_data; 49 50 private: 51 DISALLOW_COPY_AND_ASSIGN(TexturedQuadDrawCache); 52 }; 53 54 } // namespace cc 55 56 #endif // CC_OUTPUT_GL_RENDERER_DRAW_CACHE_H_ 57
