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qsgdepthstencilbuffer_p.h

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1/****************************************************************************-
2**-
3** Copyright (C) 2016 The Qt Company Ltd.-
4** Contact: https://www.qt.io/licensing/-
5**-
6** This file is part of the Qt Quick module of the Qt Toolkit.-
7**-
8** $QT_BEGIN_LICENSE:LGPL$-
9** Commercial License Usage-
10** Licensees holding valid commercial Qt licenses may use this file in-
11** accordance with the commercial license agreement provided with the-
12** Software or, alternatively, in accordance with the terms contained in-
13** a written agreement between you and The Qt Company. For licensing terms-
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15** information use the contact form at https://www.qt.io/contact-us.-
16**-
17** GNU Lesser General Public License Usage-
18** Alternatively, this file may be used under the terms of the GNU Lesser-
19** General Public License version 3 as published by the Free Software-
20** Foundation and appearing in the file LICENSE.LGPL3 included in the-
21** packaging of this file. Please review the following information to-
22** ensure the GNU Lesser General Public License version 3 requirements-
23** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.-
24**-
25** GNU General Public License Usage-
26** Alternatively, this file may be used under the terms of the GNU-
27** General Public License version 2.0 or (at your option) the GNU General-
28** Public license version 3 or any later version approved by the KDE Free-
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30** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3-
31** included in the packaging of this file. Please review the following-
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35**-
36** $QT_END_LICENSE$-
37**-
38****************************************************************************/-
39-
40#ifndef QSGDEPTHSTENCILBUFFER_P_H-
41#define QSGDEPTHSTENCILBUFFER_P_H-
42-
43//-
44// W A R N I N G-
45// --------------
46//-
47// This file is not part of the Qt API. It exists purely as an-
48// implementation detail. This header file may change from version to-
49// version without notice, or even be removed.-
50//-
51// We mean it.-
52//-
53-
54#include <QtCore/qsize.h>-
55#include <QtGui/private/qopenglcontext_p.h>-
56#include <QtGui/private/qopenglextensions_p.h>-
57#include <QtCore/qsharedpointer.h>-
58#include <QtCore/qhash.h>-
59-
60QT_BEGIN_NAMESPACE-
61-
62class QSGDepthStencilBufferManager;-
63-
64class QSGDepthStencilBuffer-
65{-
66public:-
67 enum Attachment-
68 {-
69 NoAttachment = 0x00,-
70 DepthAttachment = 0x01,-
71 StencilAttachment = 0x02-
72 };-
73 Q_DECLARE_FLAGS(Attachments, Attachment)-
74-
75 struct Format-
76 {-
77 QSize size;-
78 int samples;-
79 QSGDepthStencilBuffer::Attachments attachments;-
80 bool operator == (const Format &other) const;-
81 };-
82-
83 QSGDepthStencilBuffer(QOpenGLContext *context, const Format &format);-
84 virtual ~QSGDepthStencilBuffer();-
85-
86 // Attaches this depth stencil buffer to the currently bound FBO.-
87 void attach();-
88 // Detaches this depth stencil buffer from the currently bound FBO.-
89 void detach();-
90-
91 QSize size() const { return m_format.size; }
never executed: return m_format.size;
0
92 int samples() const { return m_format.samples; }
never executed: return m_format.samples;
0
93 Attachments attachments() const { return m_format.attachments; }
never executed: return m_format.attachments;
0
94-
95protected:-
96 virtual void free() = 0;-
97-
98 QOpenGLExtensions m_functions;-
99 QSGDepthStencilBufferManager *m_manager;-
100 Format m_format;-
101 GLuint m_depthBuffer;-
102 GLuint m_stencilBuffer;-
103-
104 friend class QSGDepthStencilBufferManager;-
105};-
106-
107Q_DECLARE_OPERATORS_FOR_FLAGS(QSGDepthStencilBuffer::Attachments)-
108-
109inline bool QSGDepthStencilBuffer::Format::operator == (const Format &other) const-
110{-
111 return size == other.size && samples == other.samples && attachments == other.attachments;
executed 85 times by 5 tests: return size == other.size && samples == other.samples && attachments == other.attachments;
Executed by:
  • tst_examples
  • tst_qquickcustomparticle
  • tst_qquickitem2
  • tst_qquickitemlayer
  • tst_qquicktext
85
112}-
113-
114-
115class QSGDefaultDepthStencilBuffer : public QSGDepthStencilBuffer-
116{-
117public:-
118 QSGDefaultDepthStencilBuffer(QOpenGLContext *context, const Format &format);-
119 virtual ~QSGDefaultDepthStencilBuffer();-
120-
121protected:-
122 void free() override;-
123};-
124-
125-
126class QSGDepthStencilBufferManager-
127{-
128public:-
129 QSGDepthStencilBufferManager(QOpenGLContext *ctx) : m_context(ctx) { }
executed 57 times by 5 tests: end of block
Executed by:
  • tst_examples
  • tst_qquickcustomparticle
  • tst_qquickitem2
  • tst_qquickitemlayer
  • tst_qquicktext
57
130 ~QSGDepthStencilBufferManager();-
131 QOpenGLContext *context() const { return m_context; }
never executed: return m_context;
0
132 QSharedPointer<QSGDepthStencilBuffer> bufferForFormat(const QSGDepthStencilBuffer::Format &fmt);-
133 void insertBuffer(const QSharedPointer<QSGDepthStencilBuffer> &buffer);-
134-
135private:-
136 typedef QHash<QSGDepthStencilBuffer::Format, QWeakPointer<QSGDepthStencilBuffer> > Hash;-
137 QOpenGLContext *m_context;-
138 Hash m_buffers;-
139-
140 friend class QSGDepthStencilBuffer;-
141};-
142-
143extern uint qHash(const QSGDepthStencilBuffer::Format &format);-
144-
145QT_END_NAMESPACE-
146-
147#endif-
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