Cache more GL state both service and client side.

gpu/command_buffer/client/gles2_implementation.h

Index: gpu/command_buffer/client/gles2_implementation.h
diff --git a/gpu/command_buffer/client/gles2_implementation.h b/gpu/command_buffer/client/gles2_implementation.h
index 47fb3b07b1356d7ba2a5ccb1aa2c8d6bffd392e8..1ba9acd5e27da9605bfbfb77f271ca3409a51e0d 100644
--- a/gpu/command_buffer/client/gles2_implementation.h
+++ b/gpu/command_buffer/client/gles2_implementation.h
@@ -18,6 +18,7 @@
 #include "../common/gles2_cmd_utils.h"
 #include "../common/scoped_ptr.h"
 #include "../client/ref_counted.h"
+#include "../client/client_context_state.h"
 #include "../client/gles2_cmd_helper.h"
 #include "../client/gles2_interface.h"
 #include "../client/query_tracker.h"
@@ -108,8 +109,8 @@ class GLES2_IMPL_EXPORT GLES2Implementation : public GLES2Interface {
     virtual void OnErrorMessage(const char* msg, int id) = 0;
   };
 
-  // Stores client side cached GL state.
-  struct GLCachedState {
+  // Stores GL state that never changes.
+  struct GLStaticState {
     struct GLES2_IMPL_EXPORT IntState {
       IntState();
       GLint max_combined_texture_image_units;
@@ -125,32 +126,7 @@ class GLES2_IMPL_EXPORT GLES2Implementation : public GLES2Interface {
       GLint num_compressed_texture_formats;
       GLint num_shader_binary_formats;
     };
-    struct EnableState {
-      EnableState()
-          : blend(false),
-            cull_face(false),
-            depth_test(false),
-            dither(false),
-            polygon_offset_fill(false),
-            sample_alpha_to_coverage(false),
-            sample_coverage(false),
-            scissor_test(false),
-            stencil_test(false) {
-      }
-
-      bool blend;
-      bool cull_face;
-      bool depth_test;
-      bool dither;
-      bool polygon_offset_fill;
-      bool sample_alpha_to_coverage;
-      bool sample_coverage;
-      bool scissor_test;
-      bool stencil_test;
-    };
-
     IntState int_state;
-    EnableState enable_state;
   };
 
   // The maxiumum result size from simple GL get commands.
@@ -406,11 +382,11 @@ class GLES2_IMPL_EXPORT GLES2Implementation : public GLES2Interface {
   bool IsTextureReservedId(GLuint id) { return false; }
   bool IsVertexArrayReservedId(GLuint id) { return false; }
 
-  void BindBufferHelper(GLenum target, GLuint texture);
-  void BindFramebufferHelper(GLenum target, GLuint texture);
-  void BindRenderbufferHelper(GLenum target, GLuint texture);
-  void BindTextureHelper(GLenum target, GLuint texture);
-  void BindVertexArrayHelper(GLuint array);
+  bool BindBufferHelper(GLenum target, GLuint texture);
+  bool BindFramebufferHelper(GLenum target, GLuint texture);
+  bool BindRenderbufferHelper(GLenum target, GLuint texture);
+  bool BindTextureHelper(GLenum target, GLuint texture);
+  bool BindVertexArrayHelper(GLuint array);
 
   void DeleteBuffersHelper(GLsizei n, const GLuint* buffers);
   void DeleteFramebuffersHelper(GLsizei n, const GLuint* framebuffers);
@@ -497,7 +473,8 @@ class GLES2_IMPL_EXPORT GLES2Implementation : public GLES2Interface {
 
   ExtensionStatus angle_pack_reverse_row_order_status;
 
-  GLCachedState gl_state_;
+  GLStaticState static_state_;
+  ClientContextState state_;
 
   // pack alignment as last set by glPixelStorei
   GLint pack_alignment_;
@@ -528,6 +505,9 @@ class GLES2_IMPL_EXPORT GLES2Implementation : public GLES2Interface {
   GLuint bound_framebuffer_;
   GLuint bound_renderbuffer_;
 
+  // The program in use by glUseProgram
+  GLuint current_program_;
+
   // The currently bound array buffer.
   GLuint bound_array_buffer_id_;