[WebGL 2] primitive restart should be always enabled

gpu/command_buffer/service/buffer_manager.h

 // Copyright (c) 2012 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 GPU_COMMAND_BUFFER_SERVICE_BUFFER_MANAGER_H_
 #define GPU_COMMAND_BUFFER_SERVICE_BUFFER_MANAGER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 108 matching lines @@
         return lhs.type_ < rhs.type_;
       }
     };
 
    private:
     GLuint offset_;
     GLsizei count_;
     GLenum type_;
   };
 
+  struct MaxValue {
+    GLuint max_value_;
+    GLuint max_value_pr_enabled_;
+
+    MaxValue (GLuint value, GLuint value_enabled)
+        : max_value_(value),
+          max_value_pr_enabled_(value_enabled) {
+    }
+  };
+
   ~Buffer();
 
   GLenum initial_target() const {
     return initial_target_;
   }
 
   void set_initial_target(GLenum target) {
     DCHECK_EQ(0u, initial_target_);
     initial_target_ = target;
   }
@@ skipping 50 matching lines @@
   // It is set the first time bindBuffer() is called and cannot be changed.
   GLenum initial_target_;
 
   // Usage of buffer.
   GLenum usage_;
 
   // Data cached from last glMapBufferRange call.
   scoped_ptr<MappedRange> mapped_range_;
 
   // A map of ranges to the highest value in that range of a certain type.
-  typedef std::map<Range, GLuint, Range::Less> RangeToMaxValueMap;
+  typedef std::map<Range, MaxValue, Range::Less> RangeToMaxValueMap;
   RangeToMaxValueMap range_set_;
 };
 
 // This class keeps track of the buffers and their sizes so we can do
 // bounds checking.
 //
 // NOTE: To support shared resources an instance of this class will need to be
 // shared by multiple GLES2Decoders.
 class GPU_EXPORT BufferManager : public base::trace_event::MemoryDumpProvider {
  public:
@@ skipping 58 matching lines @@
   // Tells whether a buffer that is emulated using client-side arrays should be
   // set to a non-zero size.
   bool UseNonZeroSizeForClientSideArrayBuffer();
 
   Buffer* GetBufferInfoForTarget(ContextState* state, GLenum target) const;
 
   // base::trace_event::MemoryDumpProvider implementation.
   bool OnMemoryDump(const base::trace_event::MemoryDumpArgs& args,
                     base::trace_event::ProcessMemoryDump* pmd) override;
 
+  void SetPrimitiveRestartState(bool enabled);
+
  private:
   friend class Buffer;
   friend class TestHelper;  // Needs access to DoBufferData.
   friend class BufferManagerTestBase;  // Needs access to DoBufferSubData.
 
   void StartTracking(Buffer* buffer);
   void StopTracking(Buffer* buffer);
 
   // Does a glBufferSubData and updates the approriate accounting.
   // Assumes the values have already been validated.
@@ skipping 31 matching lines @@
   // Whether or not buffers can be bound to multiple targets.
   bool allow_buffers_on_multiple_targets_;
 
   // Whether or not allow using GL_FIXED type for vertex attribs.
   bool allow_fixed_attribs_;
 
   // Counts the number of Buffer allocated with 'this' as its manager.
   // Allows to check no Buffer will outlive this.
   unsigned int buffer_count_;
 
+  bool primitive_restart_enabled_;
+
   bool have_context_;
   bool use_client_side_arrays_for_stream_buffers_;
 
   DISALLOW_COPY_AND_ASSIGN(BufferManager);
 };
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_BUFFER_MANAGER_H_