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 "gpu/command_buffer/service/gl_utils.h" 9 #include "gpu/gpu_export.h" 10 11 namespace gpu { 12 namespace gles2 { 13 14 class GLES2Decoder; 15 16 } // namespace gles2. 17 18 // This class encapsulates the resources required to implement the 19 // GL_CHROMIUM_copy_texture extension. The copy operation is performed 20 // via a blit to a framebuffer object. 21 class GPU_EXPORT CopyTextureCHROMIUMResourceManager { 22 public: 23 CopyTextureCHROMIUMResourceManager(); 24 25 void Initialize(const gles2::GLES2Decoder* decoder); 26 void Destroy(); 27 28 void DoCopyTexture(const gles2::GLES2Decoder* decoder, GLenum source_target, 29 GLenum dest_target, GLuint source_id, GLuint dest_id, 30 GLint level, GLsizei width, GLsizei height, 31 bool flip_y, bool premultiply_alpha, 32 bool unpremultiply_alpha); 33 34 // This will apply a transform on the source texture before copying to 35 // destination texture. 36 void DoCopyTextureWithTransform(const gles2::GLES2Decoder* decoder, 37 GLenum source_target, GLenum dest_target, 38 GLuint source_id, GLuint dest_id, GLint level, 39 GLsizei width, GLsizei height, bool flip_y, 40 bool premultiply_alpha, 41 bool unpremultiply_alpha, 42 const GLfloat transform_matrix[16]); 43 44 // The attributes used during invocation of the extension. 45 static const GLuint kVertexPositionAttrib = 0; 46 47 private: 48 bool initialized_; 49 50 static const int kNumPrograms = 12; 51 GLuint programs_[kNumPrograms]; 52 GLuint buffer_id_; 53 GLuint framebuffer_; 54 GLuint matrix_handle_[kNumPrograms]; 55 GLuint sampler_locations_[kNumPrograms]; 56 57 DISALLOW_COPY_AND_ASSIGN(CopyTextureCHROMIUMResourceManager); 58 }; 59 60 } // namespace gpu. 61 62 #endif // GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_COPY_TEXTURE_CHROMIUM_H_ 63 64 65
