command_buffer: Implement path rendering functions for CHROMIUM_path_rendering

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 528 matching lines @@
       return sizeof(GLuint);  // NOLINT
     case GL_FLOAT:
       return sizeof(GLfloat);  // NOLINT
     case GL_FIXED:
       return sizeof(GLfixed);  // NOLINT
     default:
       return 0;
   }
 }
 
+size_t GLES2Util::GetComponentCountForGLTransformType(uint32 type) {
+  switch (type) {
+    case GL_TRANSLATE_X_CHROMIUM:
+    case GL_TRANSLATE_Y_CHROMIUM:
+      return 1;
+    case GL_TRANSLATE_2D_CHROMIUM:
+      return 2;
+    case GL_TRANSLATE_3D_CHROMIUM:
+      return 3;
+    case GL_AFFINE_2D_CHROMIUM:
+    case GL_TRANSPOSE_AFFINE_2D_CHROMIUM:
+      return 6;
+    case GL_AFFINE_3D_CHROMIUM:
+    case GL_TRANSPOSE_AFFINE_3D_CHROMIUM:
+      return 12;
+    default:
+      return 0;
+  }
+}
+
 uint32 GLES2Util::GLErrorToErrorBit(uint32 error) {
   switch (error) {
     case GL_INVALID_ENUM:
       return gl_error_bit::kInvalidEnum;
     case GL_INVALID_VALUE:
       return gl_error_bit::kInvalidValue;
     case GL_INVALID_OPERATION:
       return gl_error_bit::kInvalidOperation;
     case GL_OUT_OF_MEMORY:
       return gl_error_bit::kOutOfMemory;
@@ skipping 348 matching lines @@
   }
 
   return true;
 }
 
 #include "gpu/command_buffer/common/gles2_cmd_utils_implementation_autogen.h"
 
 }  // namespace gles2
 }  // namespace gpu