Updated shader program caching to account for transform feedback varyings

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 b8b2d2d5b5801601684204dfa45bbc6f9cebba8f..9ed31b365c4c3c96a35e319d9ba2fcae9150966f 100644
--- a/gpu/command_buffer/service/program_manager.h
+++ b/gpu/command_buffer/service/program_manager.h
@@ -239,11 +239,22 @@ class GPU_EXPORT Program : public base::RefCounted<Program> {
   // varying registers.
   bool CheckVaryingsPacking(VaryingsPackingOption option) const;
 
+  void TransformFeedbackVaryings(GLsizei count, const char* const* varyings,
+      GLenum buffer_mode);
+
   // Visible for testing
   const LocationMap& bind_attrib_location_map() const {
     return bind_attrib_location_map_;
   }
 
+  const std::vector<std::string>& transform_feedback_varyings() const {
+    return transform_feedback_varyings_;
+  }
+
+  const GLenum transform_feedback_buffer_mode() const {

[Zhenyao Mo, 2015/03/12 23:50:57]

no need for const before GLenum

+    return transform_feedback_buffer_mode_;
+  }
+
  private:
   friend class base::RefCounted<Program>;
   friend class ProgramManager;
@@ -373,6 +384,10 @@ class GPU_EXPORT Program : public base::RefCounted<Program> {
 
   // uniform-location binding map from glBindUniformLocationCHROMIUM() calls.
   LocationMap bind_uniform_location_map_;
+
+  std::vector<std::string> transform_feedback_varyings_;
+
+  GLenum transform_feedback_buffer_mode_;
 };
 
 // Tracks the Programs.