ui/gl/scoped_make_current.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ui/gl/scoped_make_current.h"
   6
   7 #include "base/logging.h"
   8 #include "ui/gl/gl_context.h"
   9 #include "ui/gl/gl_surface.h"
  10
  11 namespace ui {
  12
  13 ScopedMakeCurrent::ScopedMakeCurrent(gfx::GLContext* context,
  14                                      gfx::GLSurface* surface)
  15     : previous_context_(gfx::GLContext::GetCurrent()),
  16       previous_surface_(gfx::GLSurface::GetCurrent()),
  17       context_(context),
  18       surface_(surface),
  19       succeeded_(false) {
  20   DCHECK(context);
  21   DCHECK(surface);
  22   succeeded_ = context->MakeCurrent(surface);
  23 }
  24
  25 ScopedMakeCurrent::~ScopedMakeCurrent() {
  26   if (previous_context_.get()) {
  27     DCHECK(previous_surface_.get());
  28     previous_context_->MakeCurrent(previous_surface_.get());
  29   } else {
  30     context_->ReleaseCurrent(surface_.get());
  31   }
  32 }
  33
  34 bool ScopedMakeCurrent::Succeeded() const {
  35   return succeeded_;
  36 }
  37
  38 }  // namespace ui