Reuse GLES2Util code instead of defining new function in TextureManager

gpu/command_buffer/common/gles2_cmd_utils.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.
 
 // This file is here so other GLES2 related files can have a common set of
 // includes where appropriate.
 
 #include <sstream>
 #include <GLES2/gl2.h>
 #include <GLES2/gl2ext.h>
@@ skipping 576 matching lines @@
     GL_TEXTURE_CUBE_MAP_POSITIVE_X,
     GL_TEXTURE_CUBE_MAP_NEGATIVE_X,
     GL_TEXTURE_CUBE_MAP_POSITIVE_Y,
     GL_TEXTURE_CUBE_MAP_NEGATIVE_Y,
     GL_TEXTURE_CUBE_MAP_POSITIVE_Z,
     GL_TEXTURE_CUBE_MAP_NEGATIVE_Z,
   };
   return faces[index];
 }
 
+size_t GLES2Util::GLTargetToFaceIndex(uint32 target) {
+  switch (target) {
+    case GL_TEXTURE_2D:
+    case GL_TEXTURE_EXTERNAL_OES:
+    case GL_TEXTURE_RECTANGLE_ARB:
+      return 0;
+    case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
+      return 0;
+    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
+      return 1;
+    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
+      return 2;
+    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
+      return 3;
+    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
+      return 4;
+    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
+      return 5;
+    default:
+      NOTREACHED();
+      return 0;
+  }
+}
+
 uint32 GLES2Util::GetPreferredGLReadPixelsFormat(uint32 internal_format) {
   switch (internal_format) {
     case GL_RGB16F_EXT:
     case GL_RGB32F_EXT:
       return GL_RGB;
     case GL_RGBA16F_EXT:
     case GL_RGBA32F_EXT:
       return GL_RGBA;
     default:
       return GL_RGBA;
@@ skipping 300 matching lines @@
   }
 
   return true;
 }
 
 #include "gpu/command_buffer/common/gles2_cmd_utils_implementation_autogen.h"
 
 }  // namespace gles2
 }  // namespace gpu