mojo: Convert gles2 to the new thunking system

mojo/gles2/gles2_impl.cc

+// Copyright 2014 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 "mojo/public/c/gles2/gles2.h"
+
+#include "gpu/command_buffer/client/gles2_interface.h"
+#include "mojo/gles2/gles2_context.h"
+
+using mojo::gles2::GLES2Context;
+
+namespace {
+
+const MojoAsyncWaiter* g_async_waiter = NULL;
+gpu::gles2::GLES2Interface* g_gpu_interface = NULL;
+
+}  // namespace
+
+extern "C" {
+
+void MojoGLES2Initialize(const MojoAsyncWaiter* async_waiter) {
+  DCHECK(!g_async_waiter);
+  DCHECK(async_waiter);
+  g_async_waiter = async_waiter;
+}
+
+void MojoGLES2Terminate() {
+  DCHECK(g_async_waiter);
+  g_async_waiter = NULL;
+}
+
+MojoGLES2Context MojoGLES2CreateContext(
+    MojoHandle handle,
+    MojoGLES2ContextLost lost_callback,
+    void* closure) {
+  mojo::MessagePipeHandle mph(handle);
+  mojo::ScopedMessagePipeHandle scoped_handle(mph);
+  scoped_ptr<GLES2Context> client(new GLES2Context(g_async_waiter,
+                                                   scoped_handle.Pass(),
+                                                   lost_callback,
+                                                   closure));
+  if (!client->Initialize())
+    client.reset();
+  return client.release();
+}
+
+void MojoGLES2DestroyContext(MojoGLES2Context context) {
+  delete static_cast<GLES2Context*>(context);
+}
+
+void MojoGLES2MakeCurrent(MojoGLES2Context context) {
+  gpu::gles2::GLES2Interface* interface = NULL;
+  if (context) {
+    GLES2Context* client = static_cast<GLES2Context*>(context);
+    interface = client->interface();
+    DCHECK(interface);
+  }
+  g_gpu_interface = interface;
+}
+
+void MojoGLES2SwapBuffers() {
+  assert(g_gpu_interface);
+  g_gpu_interface->SwapBuffers();
+}
+
+void* MojoGLES2GetGLES2Interface(MojoGLES2Context context) {
+  return static_cast<GLES2Context*>(context)->interface();
+}
+
+void* MojoGLES2GetContextSupport(MojoGLES2Context context) {
+  return static_cast<GLES2Context*>(context)->context_support();
+}
+
+#define VISIT_GL_CALL(Function, ReturnType, PARAMETERS, ARGUMENTS)  \
+  ReturnType gl##Function PARAMETERS {                              \
+    assert(g_gpu_interface);                                        \
+    return g_gpu_interface->Function ARGUMENTS;                     \
+  }
+#include "mojo/public/c/gles2/gles2_call_visitor_autogen.h"
+#undef VISIT_GL_CALL
+
+}  // extern "C"