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- // 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.
- #ifndef UI_GL_SCOPED_MAKE_CURRENT_H_
- #define UI_GL_SCOPED_MAKE_CURRENT_H_
- #include "base/memory/ref_counted.h"
- #include "ui/gl/gl_export.h"
- namespace gl {
- class GLContext;
- class GLSurface;
- }
- namespace ui {
- // ScopedMakeCurrent makes given context current with the given surface. If this
- // fails, Succeeded() returns false. It also restores the previous context on
- // destruction and asserts that this succeeds. Users can optionally use
- // Restore() to check if restoring the previous context succeeds. This prevents
- // the assert during destruction.
- class GL_EXPORT ScopedMakeCurrent {
- public:
- ScopedMakeCurrent(gl::GLContext* context, gl::GLSurface* surface);
- ScopedMakeCurrent(const ScopedMakeCurrent&) = delete;
- ScopedMakeCurrent& operator=(const ScopedMakeCurrent&) = delete;
- ~ScopedMakeCurrent();
- // Returns whether the |context_| is current.
- bool IsContextCurrent() { return is_context_current_; }
- private:
- scoped_refptr<gl::GLContext> previous_context_;
- scoped_refptr<gl::GLSurface> previous_surface_;
- scoped_refptr<gl::GLContext> context_;
- scoped_refptr<gl::GLSurface> surface_;
- bool is_context_current_ = false;
- };
- } // namespace ui
- #endif // UI_GL_SCOPED_MAKE_CURRENT_H_
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