command_buffer: Implement EXT_blend_func_extended

gpu/command_buffer/service/program_manager.h

Index: gpu/command_buffer/service/program_manager.h
diff --git a/gpu/command_buffer/service/program_manager.h b/gpu/command_buffer/service/program_manager.h
index e513a9d0c529ad271ded1d9c24371142f5aeb8eb..29b54f5d51aa5cc7d4dabfb815655854eb71f051 100644
--- a/gpu/command_buffer/service/program_manager.h
+++ b/gpu/command_buffer/service/program_manager.h
@@ -20,6 +20,7 @@
 namespace gpu {
 namespace gles2 {
 
+class FeatureInfo;
 class ProgramCache;
 class ProgramManager;
 class Shader;
@@ -183,6 +184,14 @@ class GPU_EXPORT Program : public base::RefCounted<Program> {
   // glGetProgramInfoCHROMIUM.
   bool GetUniformsES3(CommonDecoder::Bucket* bucket) const;
 
+  // Returns the fragment shader output variable color name binding.
+  // Returns -1 if |original_name| is not an out variable or error.
+  GLint GetFragDataLocation(const std::string& original_name) const;
+
+  // Returns the fragment shader output variable color index binding.
+  // Returns -1 if |original_name| is not an out variable or error.
+  GLint GetFragDataIndex(const std::string& original_name) const;
+
   // Sets the sampler values for a uniform.
   // This is safe to call for any location. If the location is not
   // a sampler uniform nothing will happen.
@@ -333,6 +342,8 @@ class GPU_EXPORT Program : public base::RefCounted<Program> {
   // translated.
   void ExecuteBindAttribLocationCalls();
 
+  void ExecuteBindFragDataLocationIndexedCalls();
+
   bool AddUniformInfo(
       GLsizei size, GLenum type, GLint location, GLint fake_base_location,
       const std::string& name, const std::string& original_name,
@@ -446,6 +457,7 @@ class GPU_EXPORT ProgramManager {
  public:
   explicit ProgramManager(ProgramCache* program_cache,
                           uint32 max_varying_vectors,
+                          uint32 max_dual_source_draw_buffers,
                           FeatureInfo* feature_info);
   ~ProgramManager();
 
@@ -488,6 +500,10 @@ class GPU_EXPORT ProgramManager {
     return max_varying_vectors_;
   }
 
+  uint32 max_dual_source_draw_buffers() const {
+    return max_dual_source_draw_buffers_;
+  }
+
  private:
   friend class Program;
 
@@ -514,6 +530,7 @@ class GPU_EXPORT ProgramManager {
   ProgramCache* program_cache_;
 
   uint32 max_varying_vectors_;
+  uint32 max_dual_source_draw_buffers_;
 
   scoped_refptr<FeatureInfo> feature_info_;