blob: 3aaff0d485356d5a6393b19b55e4ef3269b59cd3 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
|
// 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/compiler_specific.h"
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/optional.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();
bool Succeeded() const;
bool Restore() WARN_UNUSED_RESULT;
private:
scoped_refptr<gl::GLContext> previous_context_;
scoped_refptr<gl::GLSurface> previous_surface_;
scoped_refptr<gl::GLContext> context_;
scoped_refptr<gl::GLSurface> surface_;
bool succeeded_ = false;
bool restored_ = false;
DISALLOW_COPY_AND_ASSIGN(ScopedMakeCurrent);
};
// This behaves similarly to ScopedMakeCurrent, except that it releases the
// current context on creation and restores it on destruction.
class GL_EXPORT ScopedReleaseCurrent {
public:
ScopedReleaseCurrent();
~ScopedReleaseCurrent();
bool Restore() WARN_UNUSED_RESULT;
private:
scoped_refptr<gl::GLContext> previous_context_;
scoped_refptr<gl::GLSurface> previous_surface_;
bool restored_ = false;
DISALLOW_COPY_AND_ASSIGN(ScopedReleaseCurrent);
};
} // namespace ui
#endif // UI_GL_SCOPED_MAKE_CURRENT_H_
|
