Enable 2D Canvas painting for Chrome on Android.

gpu/command_buffer/service/gles2_cmd_decoder.cc

 // 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.
 
 #include "gpu/command_buffer/service/gles2_cmd_decoder.h"
 
 #include <stdio.h>
 
 #include <algorithm>
 #include <list>
@@ skipping 9834 matching lines @@
     }
 
     texture_manager()->SetLevelInfo(
         dest_texture, GL_TEXTURE_2D, level, internal_format, source_width,
         source_height, 1, 0, internal_format, dest_type, true);
   } else {
     texture_manager()->SetLevelCleared(
         dest_texture, GL_TEXTURE_2D, level, true);
   }
 
-  copy_texture_CHROMIUM_->DoCopyTexture(this,
-                                        source_texture->target(),
-                                        dest_texture->target(),
-                                        source_texture->service_id(),
-                                        dest_texture->service_id(), level,
-                                        source_width, source_height,
-                                        unpack_flip_y_,
-                                        unpack_premultiply_alpha_,
-                                        unpack_unpremultiply_alpha_);
+  // GL_TEXTURE_EXTERNAL_OES texture requires apply a transform matrix
+  // before presenting.
+  if (source_texture->target() == GL_TEXTURE_EXTERNAL_OES) {
+    // TODO(hkuang): get the StreamTexture transform matrix in GPU process
+    // instead of using default matrix crbug.com/226218.
+    const static GLfloat default_matrix[16] = {1.0f, 0.0f, 0.0f, 0.0f,
+                                               0.0f, 1.0f, 0.0f, 0.0f,
+                                               0.0f, 0.0f, 1.0f, 0.0f,
+                                               0.0f, 0.0f, 0.0f, 1.0f};
+    copy_texture_CHROMIUM_->DoCopyTextureWithTransform(
+        this,
+        source_texture->target(),
+        dest_texture->target(),
+        source_texture->service_id(),
+        dest_texture->service_id(), level,
+        source_width, source_height,
+        unpack_flip_y_,
+        unpack_premultiply_alpha_,
+        unpack_unpremultiply_alpha_,
+        default_matrix);
+  } else {
+    copy_texture_CHROMIUM_->DoCopyTexture(
+        this,
+        source_texture->target(),
+        dest_texture->target(),
+        source_texture->service_id(),
+        dest_texture->service_id(), level,
+        source_width, source_height,
+        unpack_flip_y_,
+        unpack_premultiply_alpha_,
+        unpack_unpremultiply_alpha_);
+  }
 }
 
 static GLenum ExtractTypeFromStorageFormat(GLenum internalformat) {
   switch (internalformat) {
     case GL_RGB565:
       return GL_UNSIGNED_SHORT_5_6_5;
     case GL_RGBA4:
       return GL_UNSIGNED_SHORT_4_4_4_4;
     case GL_RGB5_A1:
       return GL_UNSIGNED_SHORT_5_5_5_1;
@@ skipping 630 matching lines @@
   return error::kNoError;
 }
 
 // Include the auto-generated part of this file. We split this because it means
 // we can easily edit the non-auto generated parts right here in this file
 // instead of having to edit some template or the code generator.
 #include "gpu/command_buffer/service/gles2_cmd_decoder_autogen.h"
 
 }  // namespace gles2
 }  // namespace gpu