cc: custom bilinear filtering for YUV quad.

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 749 matching lines @@
   int color_matrix_location_;
   int color_offset_location_;
 };
 
 class FragmentShaderYUVVideo : public FragmentTexBlendMode {
  public:
   FragmentShaderYUVVideo();
   std::string GetShaderString(
       TexCoordPrecision precision, SamplerType sampler) const;
 
-  void SetFeatures(bool use_alpha_texture, bool use_nv12, bool use_color_lut);
+  void SetFeatures(SamplerType sampler,
+                   bool use_alpha_texture,
+                   bool use_nv12,
+                   bool use_color_lut);
 
   void Init(gpu::gles2::GLES2Interface* context,
             unsigned program,
             int* base_uniform_index);
   int y_texture_location() const { return y_texture_location_; }
   int u_texture_location() const { return u_texture_location_; }
   int v_texture_location() const { return v_texture_location_; }
   int uv_texture_location() const { return uv_texture_location_; }
   int a_texture_location() const { return a_texture_location_; }
   int lut_texture_location() const { return lut_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_size_location() const { return ya_size_location_; }
+  int uv_subsampling_factor_location() const {
+    return uv_subsampling_factor_location_;
+  }
   int ya_clamp_rect_location() const { return ya_clamp_rect_location_; }
   int uv_clamp_rect_location() const { return uv_clamp_rect_location_; }
   int resource_multiplier_location() const {
     return resource_multiplier_location_;
   }
   int resource_offset_location() const { return resource_offset_location_; }
 
  private:
+  SamplerType sampler_ = SAMPLER_TYPE_2D;
   bool use_alpha_texture_;
   bool use_nv12_;
   bool use_color_lut_;
 
   int y_texture_location_;
   int u_texture_location_;
   int v_texture_location_;
   int uv_texture_location_;
   int a_texture_location_;
   int lut_texture_location_;
   int alpha_location_;
   int yuv_matrix_location_;
   int yuv_adj_location_;
+  int ya_size_location_ = -1;
+  int uv_subsampling_factor_location_ = -1;
   int ya_clamp_rect_location_;
   int uv_clamp_rect_location_;
   int resource_multiplier_location_;
   int resource_offset_location_;
 
   DISALLOW_COPY_AND_ASSIGN(FragmentShaderYUVVideo);
 };
 
 class FragmentShaderColor : public FragmentTexBlendMode {
  public:
@@ skipping 29 matching lines @@
 
  private:
   int color_location_;
 
   DISALLOW_COPY_AND_ASSIGN(FragmentShaderColorAA);
 };
 
 }  // namespace cc
 
 #endif  // CC_OUTPUT_SHADER_H_