Added pglGetCurrentContext. Make gles2 implementation pointer global variable...

gpu/pgl/pgl.cc

 // Copyright (c) 2010 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/client/gles2_cmd_helper.h"
 #include "gpu/command_buffer/client/gles2_implementation.h"
 #include "gpu/command_buffer/client/gles2_lib.h"
 #include "gpu/pgl/command_buffer_pepper.h"
 #include "gpu/pgl/pgl.h"
 
-#if defined(_MSC_VER)
-#define THREAD_LOCAL __declspec(thread)
-#else
-#define THREAD_LOCAL __thread
-#endif
-
 namespace {
 const int32 kTransferBufferSize = 512 * 1024;
 
 class PGLContextImpl {
  public:
   PGLContextImpl(NPP npp,
               NPDevice* device,
               NPDeviceContext3D* device_context);
   ~PGLContextImpl();
 
@@ skipping 77 matching lines @@
   delete gles2_helper_;
   gles2_helper_ = NULL;
 
   delete command_buffer_;
   command_buffer_ = NULL;
 }
 
 bool PGLContextImpl::MakeCurrent(PGLContextImpl* pgl_context) {
   g_current_pgl_context = pgl_context;
   if (pgl_context)
-    gles2::g_gl_impl = pgl_context->gles2_implementation_;
+    gles2::SetGLContext(pgl_context->gles2_implementation_);
   else
-    gles2::g_gl_impl = NULL;
+    gles2::SetGLContext(NULL);
 
   return true;
 }
 
 bool PGLContextImpl::SwapBuffers() {
   gles2_implementation_->SwapBuffers();
   return true;
 }
 }  // namespace anonymous
 
 extern "C" {
 
 PGLContext pglCreateContext(NPP npp,
                             NPDevice* device,
                             NPDeviceContext3D* device_context) {
   PGLContextImpl* pgl_context = new PGLContextImpl(
       npp, device, device_context);
   if (pgl_context->Initialize(kTransferBufferSize)) {
     return pgl_context;
   }
 
   delete pgl_context;
   return NULL;
 }
 
 PGLBoolean pglMakeCurrent(PGLContext pgl_context) {
   return PGLContextImpl::MakeCurrent(static_cast<PGLContextImpl*>(pgl_context));
 }
 
-PGLBoolean pglSwapBuffers() {
+PGLContext pglGetCurrentContext(void) {
+  return g_current_pgl_context;
+}
+
+PGLBoolean pglSwapBuffers(void) {
   if (!g_current_pgl_context)
     return false;
 
   return g_current_pgl_context->SwapBuffers();
 }
 
 PGLBoolean pglDestroyContext(PGLContext pgl_context) {
   if (!pgl_context)
     return false;
 
   delete static_cast<PGLContextImpl*>(pgl_context);
   return true;
 }
 
 }  // extern "C"