Enable sampling from DXGI NV12 formats in GLRenderer.

cc/output/shader.h

 // Copyright 2011 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 CC_OUTPUT_SHADER_H_
 #define CC_OUTPUT_SHADER_H_
 
 #include <string>
 
 #include "base/macros.h"
@@ skipping 776 matching lines @@
   int v_texture_location_;
   int alpha_location_;
   int yuv_matrix_location_;
   int yuv_adj_location_;
   int ya_clamp_rect_location_;
   int uv_clamp_rect_location_;
 
   DISALLOW_COPY_AND_ASSIGN(FragmentShaderYUVVideo);
 };
 
+class FragmentShaderNV12Video : public FragmentTexBlendMode {
+ public:
+  FragmentShaderNV12Video();
+  std::string GetShaderString(TexCoordPrecision precision,
+                              SamplerType sampler) const;
+  static std::string GetShaderHead();
+  static std::string GetShaderBody();
+
+  void Init(gpu::gles2::GLES2Interface* context,
+            unsigned program,
+            int* base_uniform_index);
+  int y_texture_location() const { return y_texture_location_; }
+  int uv_texture_location() const { return uv_texture_location_; }
+  int alpha_location() const { return alpha_location_; }
+  int yuv_matrix_location() const { return yuv_matrix_location_; }
+  int yuv_adj_location() const { return yuv_adj_location_; }
+  int ya_clamp_rect_location() const { return ya_clamp_rect_location_; }
+  int uv_clamp_rect_location() const { return uv_clamp_rect_location_; }
+
+ private:
+  int y_texture_location_;
+  int uv_texture_location_;
+  int alpha_location_;
+  int yuv_matrix_location_;
+  int yuv_adj_location_;
+  int ya_clamp_rect_location_;
+  int uv_clamp_rect_location_;
+
+  DISALLOW_COPY_AND_ASSIGN(FragmentShaderNV12Video);
+};
+
 class FragmentShaderYUVAVideo : public FragmentTexBlendMode {
  public:
   FragmentShaderYUVAVideo();
   std::string GetShaderString(
       TexCoordPrecision precision, SamplerType sampler) const;
   static std::string GetShaderHead();
   static std::string GetShaderBody();
 
   void Init(gpu::gles2::GLES2Interface* context,
             unsigned program,
@@ skipping 57 matching lines @@
 
  private:
   int color_location_;
 
   DISALLOW_COPY_AND_ASSIGN(FragmentShaderColorAA);
 };
 
 }  // namespace cc
 
 #endif  // CC_OUTPUT_SHADER_H_