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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_GL_SCOPED_RESTORE_TEXTURE_H_
#define UI_GL_SCOPED_RESTORE_TEXTURE_H_
#include "base/memory/raw_ptr.h"
#include "ui/gl/gl_bindings.h"
#include "ui/gl/gl_export.h"
namespace gl {
// Restores the texture binding that the passed-in target had at this object's
// creation when this object is destroyed. If a non-zero `new_binding` is passed
// in, binds `target` to it at construction time.
class GL_EXPORT ScopedRestoreTexture {
public:
// Clients can pass true for `restore_prev_even_if_invalid` to have the
// construction-time binding restored at destruction even if that binding did
// not refer to a valid texture at the time of construction, rather than the
// default behavior of restoring to 0 at destruction in that case.
// TODO(crbug.com/1367187): Eliminate this boolean once all clients are
// converted to the default behavior.
ScopedRestoreTexture(gl::GLApi* api,
GLenum target,
bool restore_prev_even_if_invalid = false,
GLuint new_binding = 0);
ScopedRestoreTexture(const ScopedRestoreTexture&) = delete;
ScopedRestoreTexture& operator=(const ScopedRestoreTexture&) = delete;
~ScopedRestoreTexture();
private:
const raw_ptr<gl::GLApi> api_;
const GLenum target_;
GLuint prev_binding_ = 0;
};
} // namespace gl
#endif // UI_GL_SCOPED_RESTORE_TEXTURE_H_
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