Allow GL_TEXTURE_RECTANGLE_ARB to be the destination target for copyTextureCHROMIUM.

gpu/command_buffer/service/gles2_cmd_copy_texture_chromium.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_COPY_TEXTURE_CHROMIUM_H_
 #define GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_COPY_TEXTURE_CHROMIUM_H_
 
 #include <vector>
 
 #include "base/containers/hash_tables.h"
@@ skipping 17 matching lines @@
   CopyTextureCHROMIUMResourceManager();
   ~CopyTextureCHROMIUMResourceManager();
 
   void Initialize(const gles2::GLES2Decoder* decoder);
   void Destroy();
 
   void DoCopyTexture(const gles2::GLES2Decoder* decoder,
                      GLenum source_target,
                      GLuint source_id,
                      GLenum source_internal_format,
+                     GLenum dest_target,
                      GLuint dest_id,
                      GLenum dest_internal_format,
                      GLsizei width,
                      GLsizei height,
                      bool flip_y,
                      bool premultiply_alpha,
                      bool unpremultiply_alpha);
 
   void DoCopySubTexture(const gles2::GLES2Decoder* decoder,
                         GLenum source_target,
                         GLuint source_id,
                         GLenum source_internal_format,
+                        GLenum dest_target,
                         GLuint dest_id,
                         GLenum dest_internal_format,
                         GLint xoffset,
                         GLint yoffset,
                         GLint x,
                         GLint y,
                         GLsizei width,
                         GLsizei height,
                         GLsizei dest_width,
                         GLsizei dest_height,
                         GLsizei source_width,
                         GLsizei source_height,
                         bool flip_y,
                         bool premultiply_alpha,
                         bool unpremultiply_alpha);
 
   // This will apply a transform on the texture coordinates before sampling
   // the source texture and copying to the destination texture. The transform
   // matrix should be given in column-major form, so it can be passed
   // directly to GL.
   void DoCopyTextureWithTransform(const gles2::GLES2Decoder* decoder,
                                   GLenum source_target,
                                   GLuint source_id,
+                                  GLenum dest_target,
                                   GLuint dest_id,
                                   GLsizei width,
                                   GLsizei height,
                                   bool flip_y,
                                   bool premultiply_alpha,
                                   bool unpremultiply_alpha,
                                   const GLfloat transform_matrix[16]);
 
   // The attributes used during invocation of the extension.
   static const GLuint kVertexPositionAttrib = 0;
 
  private:
   struct ProgramInfo {
     ProgramInfo()
         : program(0u),
-          vertex_translate_handle(0u),
+          vertex_dest_mult_handle(0u),
+          vertex_dest_add_handle(0u),
+          vertex_source_mult_handle(0u),
+          vertex_source_add_handle(0u),
           tex_coord_transform_handle(0u),
-          half_size_handle(0u),
           sampler_handle(0u) {}
 
     GLuint program;
-    GLuint vertex_translate_handle;
+
+    // Transformations that map from the original quad coordinates [-1, 1] into
+    // the destination texture's quad coordinates.
+    GLuint vertex_dest_mult_handle;
+    GLuint vertex_dest_add_handle;
+
+    // Transformations that map from the original quad coordinates [-1, 1] into
+    // the source texture's texture coordinates.
+    GLuint vertex_source_mult_handle;
+    GLuint vertex_source_add_handle;
+
     GLuint tex_coord_transform_handle;
-    GLuint half_size_handle;
     GLuint sampler_handle;
   };
 
   void DoCopyTextureInternal(const gles2::GLES2Decoder* decoder,
                              GLenum source_target,
                              GLuint source_id,
+                             GLenum dest_target,
                              GLuint dest_id,
                              GLint xoffset,
                              GLint yoffset,
                              GLint x,
                              GLint y,
                              GLsizei width,
                              GLsizei height,
                              GLsizei dest_width,
                              GLsizei dest_height,
                              GLsizei source_width,
                              GLsizei source_height,
                              bool flip_y,
                              bool premultiply_alpha,
                              bool unpremultiply_alpha,
                              const GLfloat transform_matrix[16]);
 
   bool initialized_;
   typedef std::vector<GLuint> ShaderVector;
-  ShaderVector vertex_shaders_;
+  GLuint vertex_shader_;
   ShaderVector fragment_shaders_;
-  typedef std::pair<int, int> ProgramMapKey;
+  typedef int ProgramMapKey;
   typedef base::hash_map<ProgramMapKey, ProgramInfo> ProgramMap;
   ProgramMap programs_;
   GLuint buffer_id_;
   GLuint framebuffer_;
 
   DISALLOW_COPY_AND_ASSIGN(CopyTextureCHROMIUMResourceManager);
 };
 
 }  // namespace gpu.
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_COPY_TEXTURE_CHROMIUM_H_