cc: Add analytic color conversion to shaders

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/logging.h"
@@ skipping 114 matching lines @@
 
 enum YUVAlphaTextureMode {
   YUV_ALPHA_TEXTURE_MODE_NA,
   YUV_NO_ALPHA_TEXTURE,
   YUV_HAS_ALPHA_TEXTURE,
 };
 
 enum ColorConversionMode {
   // No color conversion is performed.
   COLOR_CONVERSION_MODE_NONE,
+  // Conversion is done using analytic transfer functions as specified by
+  // SkColorSpaceTransferFn in a uniform array.
+  COLOR_CONVERSION_MODE_ANALYTIC,
   // Conversion is done directly from YUV to output RGB space, via a 3D texture
   // represented as a 2D texture.
   COLOR_CONVERSION_MODE_LUT_FROM_YUV,
 };
 
 // TODO(ccameron): Merge this with BlendMode.
 enum FragColorMode {
   FRAG_COLOR_MODE_DEFAULT,
   FRAG_COLOR_MODE_OPAQUE,
   FRAG_COLOR_MODE_APPLY_BLEND_MODE,
@@ skipping 131 matching lines @@
   SamplerType sampler_type_ = SAMPLER_TYPE_NA;
 
   BlendMode blend_mode_ = BLEND_MODE_NONE;
   bool mask_for_background_ = false;
 
   // YUV-only parameters.
   YUVAlphaTextureMode yuv_alpha_texture_mode_ = YUV_ALPHA_TEXTURE_MODE_NA;
   UVTextureMode uv_texture_mode_ = UV_TEXTURE_MODE_UV;
 
   ColorConversionMode color_conversion_mode_ = COLOR_CONVERSION_MODE_NONE;
+  int color_src_to_dst_primary_matrix_location_ = -1;
+  int color_src_to_linear_tr_fn_location_ = -1;
+  int color_linear_to_dst_tr_fn_location_ = -1;
 
   // YUV uniform locations.
   int y_texture_location_ = -1;
   int u_texture_location_ = -1;
   int v_texture_location_ = -1;
   int uv_texture_location_ = -1;
   int a_texture_location_ = -1;
   int ya_clamp_rect_location_ = -1;
   int uv_clamp_rect_location_ = -1;
 
@@ skipping 13 matching lines @@
   std::string GetHelperFunctions() const;
   std::string GetBlendFunction() const;
   std::string GetBlendFunctionBodyForRGB() const;
 
   DISALLOW_COPY_AND_ASSIGN(FragmentShader);
 };
 
 }  // namespace cc
 
 #endif  // CC_OUTPUT_SHADER_H_