Bind GrContext to GLES2Interface rather than C GLES interface

android_webview/browser/aw_render_thread_context_provider.cc

 // Copyright 2015 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 "android_webview/browser/aw_render_thread_context_provider.h"
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/lazy_instance.h"
 #include "base/trace_event/trace_event.h"
 #include "cc/output/managed_memory_policy.h"
 #include "gpu/blink/webgraphicscontext3d_impl.h"
 #include "gpu/command_buffer/client/gl_in_process_context.h"
 #include "gpu/command_buffer/client/gles2_implementation.h"
 #include "gpu/command_buffer/client/gles2_lib.h"
 #include "gpu/skia_bindings/gl_bindings_skia_cmd_buffer.h"
 #include "third_party/skia/include/gpu/GrContext.h"
 #include "third_party/skia/include/gpu/gl/GrGLInterface.h"
 
 namespace android_webview {
 
-namespace {
-
-// Singleton used to initialize and terminate the gles2 library.
-class GLES2Initializer {
- public:
-  GLES2Initializer() { gles2::Initialize(); }
-
-  ~GLES2Initializer() { gles2::Terminate(); }
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(GLES2Initializer);
-};
-
-base::LazyInstance<GLES2Initializer> g_gles2_initializer =
-    LAZY_INSTANCE_INITIALIZER;
-
-}  // namespace
-
 // static
 scoped_refptr<AwRenderThreadContextProvider>
 AwRenderThreadContextProvider::Create(
     scoped_refptr<gfx::GLSurface> surface,
     scoped_refptr<gpu::InProcessCommandBuffer::Service> service) {
   return new AwRenderThreadContextProvider(surface, service);
 }
 
 AwRenderThreadContextProvider::AwRenderThreadContextProvider(
     scoped_refptr<gfx::GLSurface> surface,
@@ skipping 54 matching lines @@
 
   return context_->GetImplementation();
 }
 
 gpu::ContextSupport* AwRenderThreadContextProvider::ContextSupport() {
   DCHECK(main_thread_checker_.CalledOnValidThread());
 
   return context_->GetImplementation();
 }
 
-static void BindGrContextCallback(const GrGLInterface* interface) {
-  cc::ContextProvider* context_provider =
-      reinterpret_cast<AwRenderThreadContextProvider*>(
-          interface->fCallbackData);
-
-  gles2::SetGLContext(context_provider->ContextGL());
-}
-
 class GrContext* AwRenderThreadContextProvider::GrContext() {
   DCHECK(main_thread_checker_.CalledOnValidThread());
 
   if (gr_context_)
     return gr_context_.get();
 
-  // The GrGLInterface factory will make GL calls using the C GLES2 interface.
-  // Make sure the gles2 library is initialized first on exactly one thread.
-  g_gles2_initializer.Get();
-  gles2::SetGLContext(ContextGL());
-
   skia::RefPtr<GrGLInterface> interface = skia::AdoptRef(new GrGLInterface);
-  skia_bindings::InitCommandBufferSkiaGLBinding(interface.get());
-  interface->fCallback = BindGrContextCallback;
-  interface->fCallbackData = reinterpret_cast<GrGLInterfaceCallbackData>(this);
+  skia_bindings::InitGLES2InterfaceBindings(interface.get(), ContextGL());
 
   gr_context_ = skia::AdoptRef(GrContext::Create(
       kOpenGL_GrBackend, reinterpret_cast<GrBackendContext>(interface.get())));
 
   return gr_context_.get();
 }
 
 void AwRenderThreadContextProvider::InvalidateGrContext(uint32_t state) {
   DCHECK(main_thread_checker_.CalledOnValidThread());
 
@@ skipping 27 matching lines @@
 void AwRenderThreadContextProvider::OnLostContext() {
   DCHECK(main_thread_checker_.CalledOnValidThread());
 
   if (!lost_context_callback_.is_null())
     base::ResetAndReturn(&lost_context_callback_).Run();
   if (gr_context_)
     gr_context_->abandonContext();
 }
 
 }  // namespace android_webview