The great shader refactor: Delete all of the subclasses

cc/output/program_binding.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_PROGRAM_BINDING_H_
 #define CC_OUTPUT_PROGRAM_BINDING_H_
 
 #include <string>
 
 #include "base/logging.h"
@@ skipping 36 matching lines @@
 
   unsigned program_;
   unsigned vertex_shader_id_;
   unsigned fragment_shader_id_;
   bool initialized_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ProgramBindingBase);
 };
 
-template <class VertexShader, class FragmentShader>
+template <class FragmentShader>
 class ProgramBinding : public ProgramBindingBase {
  public:
   ProgramBinding() {}
 
-  void Initialize(ContextProvider* context_provider,
-                  TexCoordPrecision precision,
-                  SamplerType sampler) {
-    return Initialize(
-        context_provider, precision, sampler, BLEND_MODE_NONE, false);
+  void InitializeDebugBorderProgram(ContextProvider* context_provider) {
+    vertex_shader_.has_matrix_ = true;
+
+    fragment_shader_.input_color_type_ = INPUT_COLOR_SOURCE_UNIFORM;
+    fragment_shader_.frag_color_mode_ = FRAG_COLOR_MODE_DEFAULT;
+
+    InitializeInternal(context_provider);
   }
 
-  void Initialize(ContextProvider* context_provider,
-                  TexCoordPrecision precision,
-                  SamplerType sampler,
-                  BlendMode blend_mode) {
-    return Initialize(
-        context_provider, precision, sampler, blend_mode, false);
+  void InitializeSolidColorProgram(ContextProvider* context_provider,
+                                   bool use_aa) {
+    vertex_shader_.position_source_ = POSITION_SOURCE_ATTRIBUTE_INDEXED_UNIFORM;
+    vertex_shader_.has_matrix_ = true;
+#if defined(OS_ANDROID)
+    vertex_shader_.has_dummy_variables_ = true;
+#endif
+    vertex_shader_.has_aa_ = use_aa;
+
+    fragment_shader_.input_color_type_ = INPUT_COLOR_SOURCE_UNIFORM;
+    fragment_shader_.frag_color_mode_ = FRAG_COLOR_MODE_DEFAULT;
+    fragment_shader_.has_aa_ = use_aa;
+
+    InitializeInternal(context_provider);
   }
 
-  void Initialize(ContextProvider* context_provider,
-                  TexCoordPrecision precision,
-                  SamplerType sampler,
-                  BlendMode blend_mode,
-                  bool mask_for_background) {
+  void InitializeTileProgram(ContextProvider* context_provider,
+                             TexCoordPrecision precision,
+                             SamplerType sampler,
+                             AAMode aa_mode,
+                             SwizzleMode swizzle_mode,
+                             OpacityMode opacity_mode) {
+    vertex_shader_.position_source_ = POSITION_SOURCE_ATTRIBUTE_INDEXED_UNIFORM;
+    vertex_shader_.tex_coord_source_ = TEX_COORD_SOURCE_ATTRIBUTE;
+    vertex_shader_.tex_coord_transform_ = TEX_COORD_TRANSFORM_VEC4;
+    vertex_shader_.has_matrix_ = true;
+    fragment_shader_.tex_coord_precision_ = precision;
+    fragment_shader_.sampler_type_ = sampler;
+    if (swizzle_mode == DO_SWIZZLE)
+      fragment_shader_.has_swizzle_ = true;
+    if (aa_mode == USE_AA) {
+      vertex_shader_.has_aa_ = true;
+      fragment_shader_.has_aa_ = true;
+      fragment_shader_.has_rgba_fragment_tex_transform_ = true;
+    }
+
+    if (opacity_mode == IS_OPAQUE) {
+      fragment_shader_.frag_color_mode_ = FRAG_COLOR_MODE_OPAQUE;
+    } else {
+      fragment_shader_.has_uniform_alpha_ = true;
+      // TODO(ccameron): Determine if we can always use FRAG_COLOR_MODE_DEFAULT
+      // here.
+      if (aa_mode == NO_AA && swizzle_mode == NO_SWIZZLE)
+        fragment_shader_.frag_color_mode_ = FRAG_COLOR_MODE_APPLY_BLEND_MODE;
+      else
+        fragment_shader_.frag_color_mode_ = FRAG_COLOR_MODE_DEFAULT;
+    }
+
+    InitializeInternal(context_provider);
+  }
+
+  void InitializeTextureProgram(ContextProvider* context_provider,
+                                TexCoordPrecision precision,
+                                SamplerType sampler,
+                                PremultipliedAlphaMode premultiplied_alpha,
+                                bool has_background_color) {
+    vertex_shader_.tex_coord_source_ = TEX_COORD_SOURCE_ATTRIBUTE;
+    vertex_shader_.tex_coord_transform_ = TEX_COORD_TRANSFORM_VEC4;
+    vertex_shader_.has_matrix_ = true;
+    vertex_shader_.has_vertex_opacity_ = true;
+    vertex_shader_.use_uniform_arrays_ = true;
+    fragment_shader_.tex_coord_precision_ = precision;
+    fragment_shader_.sampler_type_ = sampler;
+    fragment_shader_.frag_color_mode_ = FRAG_COLOR_MODE_DEFAULT;
+    fragment_shader_.has_varying_alpha_ = true;
+    if (premultiplied_alpha == NON_PREMULTIPLIED_ALPHA)
+      fragment_shader_.has_premultiply_alpha_ = true;
+    fragment_shader_.has_background_color_ = has_background_color;
+    InitializeInternal(context_provider);
+  }
+
+  // TODO(ccameron): Merge |mask_for_background| into MaskMode.
+  void InitializeRenderPassProgram(ContextProvider* context_provider,
+                                   TexCoordPrecision precision,
+                                   SamplerType sampler,
+                                   BlendMode blend_mode,
+                                   AAMode aa_mode,
+                                   MaskMode mask_mode,
+                                   bool mask_for_background,
+                                   bool has_color_matrix) {
+    vertex_shader_.has_matrix_ = true;
+    if (aa_mode == NO_AA) {
+      vertex_shader_.tex_coord_source_ = TEX_COORD_SOURCE_ATTRIBUTE;
+      vertex_shader_.tex_coord_transform_ = TEX_COORD_TRANSFORM_VEC4;
+      vertex_shader_.has_vertex_opacity_ = true;
+      vertex_shader_.use_uniform_arrays_ = true;
+    } else {
+      vertex_shader_.position_source_ =
+          POSITION_SOURCE_ATTRIBUTE_INDEXED_UNIFORM;
+      vertex_shader_.tex_coord_source_ = TEX_COORD_SOURCE_POSITION;
+      vertex_shader_.tex_coord_transform_ = TEX_COORD_TRANSFORM_TRANSLATED_VEC4;
+      vertex_shader_.has_aa_ = true;
+      fragment_shader_.has_aa_ = true;
+    }
+
+    fragment_shader_.tex_coord_precision_ = precision;
+    fragment_shader_.sampler_type_ = sampler;
+    fragment_shader_.blend_mode_ = blend_mode;
+    fragment_shader_.frag_color_mode_ = FRAG_COLOR_MODE_APPLY_BLEND_MODE;
+    fragment_shader_.has_uniform_alpha_ = true;
+    fragment_shader_.mask_for_background_ = mask_for_background;
+    fragment_shader_.has_color_matrix_ = has_color_matrix;
+    if (mask_mode == HAS_MASK) {
+      fragment_shader_.has_mask_sampler_ = true;
+      fragment_shader_.ignore_sampler_type_ = true;
+    } else {
+      DCHECK(!mask_for_background);
+    }
+
+    InitializeInternal(context_provider);
+  }
+
+  void InitializeVideoStreamProgram(ContextProvider* context_provider,
+                                    TexCoordPrecision precision) {
+    vertex_shader_.tex_coord_source_ = TEX_COORD_SOURCE_ATTRIBUTE;
+    vertex_shader_.tex_coord_transform_ = TEX_COORD_TRANSFORM_MATRIX;
+    vertex_shader_.has_matrix_ = true;
+
+    fragment_shader_.tex_coord_precision_ = precision;
+    fragment_shader_.sampler_type_ = SAMPLER_TYPE_EXTERNAL_OES;
+    fragment_shader_.frag_color_mode_ = FRAG_COLOR_MODE_DEFAULT;
+
+    InitializeInternal(context_provider);
+  }
+
+  void InitializeVideoYUVProgram(ContextProvider* context_provider,
+                                 TexCoordPrecision precision,
+                                 SamplerType sampler,
+                                 bool use_alpha_plane,
+                                 bool use_nv12,
+                                 bool use_color_lut) {
+    vertex_shader_.tex_coord_source_ = TEX_COORD_SOURCE_ATTRIBUTE;
+    vertex_shader_.has_matrix_ = true;
+    vertex_shader_.is_ya_uv_ = true;
+
+    fragment_shader_.tex_coord_precision_ = precision;
+    fragment_shader_.sampler_type_ = sampler;
+    fragment_shader_.SetFeatures(use_alpha_plane, use_nv12, use_color_lut);
+
+    InitializeInternal(context_provider);
+  }
+
+  const VertexShaderBase& vertex_shader() const { return vertex_shader_; }
+  const FragmentShader& fragment_shader() const { return fragment_shader_; }
+
+ private:
+  void InitializeInternal(ContextProvider* context_provider) {
     DCHECK(context_provider);
     DCHECK(!initialized_);
 
     if (IsContextLost(context_provider->ContextGL()))
       return;
 
-    fragment_shader_.set_blend_mode(blend_mode);
-    fragment_shader_.set_mask_for_background(mask_for_background);
-
-    if (!ProgramBindingBase::Init(
-            context_provider->ContextGL(),
-            vertex_shader_.GetShaderString(),
-            fragment_shader_.GetShaderString(precision, sampler))) {
+    if (!ProgramBindingBase::Init(context_provider->ContextGL(),
+                                  vertex_shader_.GetShaderString(),
+                                  fragment_shader_.GetShaderString())) {
       DCHECK(IsContextLost(context_provider->ContextGL()));
       return;
     }
 
     int base_uniform_index = 0;
     vertex_shader_.Init(context_provider->ContextGL(),
                         program_, &base_uniform_index);
     fragment_shader_.Init(context_provider->ContextGL(),
                           program_, &base_uniform_index);
 
     // Link after binding uniforms
     if (!Link(context_provider->ContextGL())) {
       DCHECK(IsContextLost(context_provider->ContextGL()));
       return;
     }
 
     initialized_ = true;
   }
 
-  const VertexShader& vertex_shader() const { return vertex_shader_; }
-  const FragmentShader& fragment_shader() const { return fragment_shader_; }
-  FragmentShader* mutable_fragment_shader() { return &fragment_shader_; }
-
- private:
-  VertexShader vertex_shader_;
+  VertexShaderBase vertex_shader_;
   FragmentShader fragment_shader_;
 
   DISALLOW_COPY_AND_ASSIGN(ProgramBinding);
 };
 
 }  // namespace cc
 
 #endif  // CC_OUTPUT_PROGRAM_BINDING_H_