During virtual context switches only restore texture units that have changed from the previous cont…

gpu/command_buffer/service/gles2_cmd_decoder.cc

 // 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.
 
 #include "gpu/command_buffer/service/gles2_cmd_decoder.h"
 
 #include <stdio.h>
 
 #include <algorithm>
 #include <list>
@@ skipping 528 matching lines @@
       const scoped_refptr<gfx::GLSurface>& surface) OVERRIDE;
   virtual bool ProduceFrontBuffer(const Mailbox& mailbox) OVERRIDE;
   virtual bool ResizeOffscreenFrameBuffer(const gfx::Size& size) OVERRIDE;
   void UpdateParentTextureInfo();
   virtual bool MakeCurrent() OVERRIDE;
   virtual void ReleaseCurrent() OVERRIDE;
   virtual GLES2Util* GetGLES2Util() OVERRIDE { return &util_; }
   virtual gfx::GLContext* GetGLContext() OVERRIDE { return context_.get(); }
   virtual ContextGroup* GetContextGroup() OVERRIDE { return group_.get(); }
   virtual Capabilities GetCapabilities() OVERRIDE;
-  virtual void RestoreState() const OVERRIDE;
+  virtual void RestoreState(const ContextState* prev_state) const OVERRIDE;
 
   virtual void RestoreActiveTexture() const OVERRIDE {
     state_.RestoreActiveTexture();
   }
-  virtual void RestoreAllTextureUnitBindings() const OVERRIDE {
-    state_.RestoreAllTextureUnitBindings();
+  virtual void RestoreAllTextureUnitBindings(
+      const ContextState* prev_state) const OVERRIDE {
+    state_.RestoreAllTextureUnitBindings(prev_state);
   }
   virtual void RestoreAttribute(unsigned index) const OVERRIDE {
     state_.RestoreAttribute(index);
   }
   virtual void RestoreBufferBindings() const OVERRIDE {
     state_.RestoreBufferBindings();
   }
   virtual void RestoreGlobalState() const OVERRIDE {
     state_.RestoreGlobalState();
   }
   virtual void RestoreProgramBindings() const OVERRIDE {
     state_.RestoreProgramBindings();
   }
   virtual void RestoreRenderbufferBindings() const OVERRIDE {
     state_.RestoreRenderbufferBindings();
   }
   virtual void RestoreTextureUnitBindings(unsigned unit) const OVERRIDE {
-    state_.RestoreTextureUnitBindings(unit);
+    state_.RestoreTextureUnitBindings(unit, NULL);
   }
   virtual void RestoreFramebufferBindings() const OVERRIDE;
   virtual void RestoreTextureState(unsigned service_id) const OVERRIDE;
 
   virtual QueryManager* GetQueryManager() OVERRIDE {
     return query_manager_.get();
   }
   virtual VertexArrayManager* GetVertexArrayManager() OVERRIDE {
     return vertex_array_manager_.get();
   }
   virtual bool ProcessPendingQueries() OVERRIDE;
   virtual bool HasMoreIdleWork() OVERRIDE;
   virtual void PerformIdleWork() OVERRIDE;
 
   virtual void WaitForReadPixels(base::Closure callback) OVERRIDE;
 
   virtual void SetResizeCallback(
       const base::Callback<void(gfx::Size, float)>& callback) OVERRIDE;
 
   virtual Logger* GetLogger() OVERRIDE;
   virtual ErrorState* GetErrorState() OVERRIDE;
+  virtual const ContextState* GetContextState() OVERRIDE { return &state_; }
 
   virtual void SetShaderCacheCallback(
       const ShaderCacheCallback& callback) OVERRIDE;
   virtual void SetWaitSyncPointCallback(
       const WaitSyncPointCallback& callback) OVERRIDE;
 
   virtual AsyncPixelTransferManager*
       GetAsyncPixelTransferManager() OVERRIDE;
   virtual void ResetAsyncPixelTransferManagerForTest() OVERRIDE;
   virtual void SetAsyncPixelTransferManagerForTest(
@@ skipping 3144 matching lines @@
     framebuffer_state_.clear_state_dirty = false;
   }
 }
 
 GLuint GLES2DecoderImpl::GetBackbufferServiceId() const {
   return (offscreen_target_frame_buffer_.get())
              ? offscreen_target_frame_buffer_->id()
              : (surface_.get() ? surface_->GetBackingFrameBufferObject() : 0);
 }
 
-void GLES2DecoderImpl::RestoreState() const {
+void GLES2DecoderImpl::RestoreState(const ContextState* prev_state) const {
   TRACE_EVENT1("gpu", "GLES2DecoderImpl::RestoreState",
                "context", logger_.GetLogPrefix());
   // Restore the Framebuffer first because of bugs in Intel drivers.
   // Intel drivers incorrectly clip the viewport settings to
   // the size of the current framebuffer object.
   RestoreFramebufferBindings();
-  state_.RestoreState();
+  state_.RestoreState(prev_state);
 }
 
 void GLES2DecoderImpl::RestoreFramebufferBindings() const {
   GLuint service_id =
       framebuffer_state_.bound_draw_framebuffer.get()
           ? framebuffer_state_.bound_draw_framebuffer->service_id()
           : GetBackbufferServiceId();
   if (!features().chromium_framebuffer_multisample) {
     glBindFramebufferEXT(GL_FRAMEBUFFER, service_id);
   } else {
@@ skipping 6859 matching lines @@
   DoDidUseTexImageIfNeeded(texture, texture->target());
 }
 
 // Include the auto-generated part of this file. We split this because it means
 // we can easily edit the non-auto generated parts right here in this file
 // instead of having to edit some template or the code generator.
 #include "gpu/command_buffer/service/gles2_cmd_decoder_autogen.h"
 
 }  // namespace gles2
 }  // namespace gpu