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. 4 5 #ifndef CC_OUTPUT_GEOMETRY_BINDING_H_ 6 #define CC_OUTPUT_GEOMETRY_BINDING_H_ 7 8 #include "base/basictypes.h" 9 #include "third_party/khronos/GLES2/gl2.h" 10 11 namespace gfx { 12 class RectF; 13 } 14 namespace gpu { 15 namespace gles2 { 16 class GLES2Interface; 17 } 18 } 19 20 namespace cc { 21 22 class GeometryBinding { 23 public: 24 GeometryBinding(gpu::gles2::GLES2Interface* gl, 25 const gfx::RectF& quad_vertex_rect); 26 ~GeometryBinding(); 27 28 void PrepareForDraw(); 29 30 // All layer shaders share the same attribute locations for the vertex 31 // positions and texture coordinates. This allows switching shaders without 32 // rebinding attribute arrays. PositionAttribLocation()33 static int PositionAttribLocation() { return 0; } TexCoordAttribLocation()34 static int TexCoordAttribLocation() { return 1; } TriangleIndexAttribLocation()35 static int TriangleIndexAttribLocation() { return 2; } 36 37 private: 38 gpu::gles2::GLES2Interface* gl_; 39 40 GLuint quad_vertices_vbo_; 41 GLuint quad_elements_vbo_; 42 43 DISALLOW_COPY_AND_ASSIGN(GeometryBinding); 44 }; 45 46 } // namespace cc 47 48 #endif // CC_OUTPUT_GEOMETRY_BINDING_H_ 49