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 QtOpenGL 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 |
14 | ** and conditions see https://www.qt.io/terms-conditions. For further |
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 |
29 | ** Qt Foundation. The licenses are as published by the Free Software |
30 | ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 |
31 | ** included in the packaging of this file. Please review the following |
32 | ** information to ensure the GNU General Public License requirements will |
33 | ** be met: https://www.gnu.org/licenses/gpl-2.0.html and |
34 | ** https://www.gnu.org/licenses/gpl-3.0.html. |
35 | ** |
36 | ** $QT_END_LICENSE$ |
37 | ** |
38 | ****************************************************************************/ |
39 | |
40 | #ifndef QGLFRAMEBUFFEROBJECT_H |
41 | #define QGLFRAMEBUFFEROBJECT_H |
42 | |
43 | #include <QtOpenGL/qgl.h> |
44 | #include <QtGui/qpaintdevice.h> |
45 | |
46 | QT_BEGIN_NAMESPACE |
47 | |
48 | |
49 | class QGLFramebufferObjectPrivate; |
50 | class QGLFramebufferObjectFormat; |
51 | |
52 | class Q_OPENGL_EXPORT QGLFramebufferObject : public QPaintDevice |
53 | { |
54 | Q_DECLARE_PRIVATE(QGLFramebufferObject) |
55 | public: |
56 | enum Attachment { |
57 | NoAttachment, |
58 | CombinedDepthStencil, |
59 | Depth |
60 | }; |
61 | |
62 | QGLFramebufferObject(const QSize &size, GLenum target = GL_TEXTURE_2D); |
63 | QGLFramebufferObject(int width, int height, GLenum target = GL_TEXTURE_2D); |
64 | |
65 | QGLFramebufferObject(const QSize &size, Attachment attachment, |
66 | GLenum target = GL_TEXTURE_2D, GLenum internal_format = 0); |
67 | QGLFramebufferObject(int width, int height, Attachment attachment, |
68 | GLenum target = GL_TEXTURE_2D, GLenum internal_format = 0); |
69 | |
70 | QGLFramebufferObject(const QSize &size, const QGLFramebufferObjectFormat &format); |
71 | QGLFramebufferObject(int width, int height, const QGLFramebufferObjectFormat &format); |
72 | |
73 | virtual ~QGLFramebufferObject(); |
74 | |
75 | QGLFramebufferObjectFormat format() const; |
76 | |
77 | bool isValid() const; |
78 | bool isBound() const; |
79 | bool bind(); |
80 | bool release(); |
81 | |
82 | GLuint texture() const; |
83 | QSize size() const; |
84 | QImage toImage() const; |
85 | Attachment attachment() const; |
86 | |
87 | QPaintEngine *paintEngine() const override; |
88 | GLuint handle() const; |
89 | |
90 | static bool bindDefault(); |
91 | |
92 | static bool hasOpenGLFramebufferObjects(); |
93 | |
94 | void drawTexture(const QRectF &target, GLuint textureId, GLenum textureTarget = GL_TEXTURE_2D); |
95 | void drawTexture(const QPointF &point, GLuint textureId, GLenum textureTarget = GL_TEXTURE_2D); |
96 | |
97 | static bool hasOpenGLFramebufferBlit(); |
98 | static void blitFramebuffer(QGLFramebufferObject *target, const QRect &targetRect, |
99 | QGLFramebufferObject *source, const QRect &sourceRect, |
100 | GLbitfield buffers = GL_COLOR_BUFFER_BIT, |
101 | GLenum filter = GL_NEAREST); |
102 | |
103 | protected: |
104 | int metric(PaintDeviceMetric metric) const override; |
105 | int devType() const override { return QInternal::FramebufferObject; } |
106 | |
107 | private: |
108 | Q_DISABLE_COPY(QGLFramebufferObject) |
109 | QScopedPointer<QGLFramebufferObjectPrivate> d_ptr; |
110 | friend class QGLPaintDevice; |
111 | friend class QGLFBOGLPaintDevice; |
112 | }; |
113 | |
114 | class QGLFramebufferObjectFormatPrivate; |
115 | class Q_OPENGL_EXPORT QGLFramebufferObjectFormat |
116 | { |
117 | public: |
118 | QGLFramebufferObjectFormat(); |
119 | QGLFramebufferObjectFormat(const QGLFramebufferObjectFormat &other); |
120 | QGLFramebufferObjectFormat &operator=(const QGLFramebufferObjectFormat &other); |
121 | ~QGLFramebufferObjectFormat(); |
122 | |
123 | void setSamples(int samples); |
124 | int samples() const; |
125 | |
126 | void setMipmap(bool enabled); |
127 | bool mipmap() const; |
128 | |
129 | void setAttachment(QGLFramebufferObject::Attachment attachment); |
130 | QGLFramebufferObject::Attachment attachment() const; |
131 | |
132 | void setTextureTarget(GLenum target); |
133 | GLenum textureTarget() const; |
134 | |
135 | void setInternalTextureFormat(GLenum internalTextureFormat); |
136 | GLenum internalTextureFormat() const; |
137 | |
138 | bool operator==(const QGLFramebufferObjectFormat& other) const; |
139 | bool operator!=(const QGLFramebufferObjectFormat& other) const; |
140 | |
141 | private: |
142 | QGLFramebufferObjectFormatPrivate *d; |
143 | |
144 | void detach(); |
145 | }; |
146 | |
147 | QT_END_NAMESPACE |
148 | |
149 | #endif // QGLFRAMEBUFFEROBJECT_H |
150 | |