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 #ifndef GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_COPY_TEXTURE_CHROMIUM_H_ 6 #define GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_COPY_TEXTURE_CHROMIUM_H_ 7 8 #include <vector> 9 10 #include "base/containers/hash_tables.h" 11 #include "gpu/command_buffer/service/gl_utils.h" 12 #include "gpu/gpu_export.h" 13 14 namespace gpu { 15 namespace gles2 { 16 17 class GLES2Decoder; 18 19 } // namespace gles2. 20 21 // This class encapsulates the resources required to implement the 22 // GL_CHROMIUM_copy_texture extension. The copy operation is performed 23 // via a blit to a framebuffer object. 24 class GPU_EXPORT CopyTextureCHROMIUMResourceManager { 25 public: 26 CopyTextureCHROMIUMResourceManager(); 27 ~CopyTextureCHROMIUMResourceManager(); 28 29 void Initialize(const gles2::GLES2Decoder* decoder); 30 void Destroy(); 31 32 void DoCopyTexture(const gles2::GLES2Decoder* decoder, GLenum source_target, 33 GLenum dest_target, GLuint source_id, GLuint dest_id, 34 GLint level, GLsizei width, GLsizei height, 35 bool flip_y, bool premultiply_alpha, 36 bool unpremultiply_alpha); 37 38 // This will apply a transform on the source texture before copying to 39 // destination texture. 40 void DoCopyTextureWithTransform(const gles2::GLES2Decoder* decoder, 41 GLenum source_target, GLenum dest_target, 42 GLuint source_id, GLuint dest_id, GLint level, 43 GLsizei width, GLsizei height, bool flip_y, 44 bool premultiply_alpha, 45 bool unpremultiply_alpha, 46 const GLfloat transform_matrix[16]); 47 48 // The attributes used during invocation of the extension. 49 static const GLuint kVertexPositionAttrib = 0; 50 51 private: 52 struct ProgramInfo { ProgramInfoProgramInfo53 ProgramInfo() 54 : program(0u), 55 matrix_handle(0u), 56 half_size_handle(0u), 57 sampler_handle(0u) {} 58 59 GLuint program; 60 GLuint matrix_handle; 61 GLuint half_size_handle; 62 GLuint sampler_handle; 63 }; 64 65 bool initialized_; 66 typedef std::vector<GLuint> ShaderVector; 67 ShaderVector vertex_shaders_; 68 ShaderVector fragment_shaders_; 69 typedef std::pair<int, int> ProgramMapKey; 70 typedef base::hash_map<ProgramMapKey, ProgramInfo> ProgramMap; 71 ProgramMap programs_; 72 GLuint buffer_id_; 73 GLuint framebuffer_; 74 75 DISALLOW_COPY_AND_ASSIGN(CopyTextureCHROMIUMResourceManager); 76 }; 77 78 } // namespace gpu. 79 80 #endif // GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_COPY_TEXTURE_CHROMIUM_H_ 81