gpu: introduce glCopySubTextureCHROMIUM

gpu/command_buffer/service/gles2_cmd_copy_texture_chromium.h

Index: gpu/command_buffer/service/gles2_cmd_copy_texture_chromium.h
diff --git a/gpu/command_buffer/service/gles2_cmd_copy_texture_chromium.h b/gpu/command_buffer/service/gles2_cmd_copy_texture_chromium.h
index 083fc4c8578131a65f14a6aa4505787379006042..5c62141149d44f1bf250fd70c68e7bce883d9be1 100644
--- a/gpu/command_buffer/service/gles2_cmd_copy_texture_chromium.h
+++ b/gpu/command_buffer/service/gles2_cmd_copy_texture_chromium.h
@@ -35,7 +35,6 @@ class GPU_EXPORT CopyTextureCHROMIUMResourceManager {
                      GLuint source_id,
                      GLenum source_internal_format,
                      GLuint dest_id,
-                     GLint dest_level,
                      GLenum dest_internal_format,
                      GLsizei width,
                      GLsizei height,
@@ -43,13 +42,28 @@ class GPU_EXPORT CopyTextureCHROMIUMResourceManager {
                      bool premultiply_alpha,
                      bool unpremultiply_alpha);
 
+  void DoCopySubTexture(const gles2::GLES2Decoder* decoder,
+                        GLenum source_target,
+                        GLuint source_id,
+                        GLenum source_internal_format,
+                        GLuint dest_id,
+                        GLenum dest_internal_format,
+                        GLint xoffset,
+                        GLint yoffset,
+                        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 source texture before copying to
   // destination texture.
   void DoCopyTextureWithTransform(const gles2::GLES2Decoder* decoder,
                                   GLenum source_target,
                                   GLuint source_id,
                                   GLuint dest_id,
-                                  GLint dest_level,
                                   GLsizei width,
                                   GLsizei height,
                                   bool flip_y,
@@ -57,6 +71,21 @@ class GPU_EXPORT CopyTextureCHROMIUMResourceManager {
                                   bool unpremultiply_alpha,
                                   const GLfloat transform_matrix[16]);
 
+  void DoCopySubTextureWithTransform(const gles2::GLES2Decoder* decoder,
+                                     GLenum source_target,
+                                     GLuint source_id,
+                                     GLuint dest_id,
+                                     GLint xoffset,
+                                     GLint yoffset,
+                                     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]);
+
   // The attributes used during invocation of the extension.
   static const GLuint kVertexPositionAttrib = 0;
 
@@ -74,6 +103,21 @@ class GPU_EXPORT CopyTextureCHROMIUMResourceManager {
     GLuint sampler_handle;
   };
 
+  void DoCopyTextureInternal(const gles2::GLES2Decoder* decoder,
+                             GLenum source_target,
+                             GLuint source_id,
+                             GLuint dest_id,
+                             GLint xoffset,
+                             GLint yoffset,
+                             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_;