1 | // Copyright (C) 2016 The Qt Company Ltd. |
2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
3 | |
4 | #ifndef QOPENGLFRAMEBUFFEROBJECT_H |
5 | #define QOPENGLFRAMEBUFFEROBJECT_H |
6 | |
7 | #include <QtOpenGL/qtopenglglobal.h> |
8 | |
9 | #include <QtGui/qopengl.h> |
10 | #include <QtGui/qpaintdevice.h> |
11 | |
12 | #include <QtCore/qscopedpointer.h> |
13 | |
14 | #if defined(Q_QDOC) |
15 | #undef GLuint |
16 | typedef unsigned int GLuint; |
17 | #undef GLenum |
18 | typedef unsigned int GLenum; |
19 | #undef GL_TEXTURE_2D |
20 | #define GL_TEXTURE_2D 0x0DE1 |
21 | #undef GLbitfield |
22 | typedef unsigned int GLbitfield; |
23 | #endif |
24 | |
25 | QT_BEGIN_NAMESPACE |
26 | |
27 | class QOpenGLFramebufferObjectPrivate; |
28 | class QOpenGLFramebufferObjectFormat; |
29 | |
30 | class Q_OPENGL_EXPORT QOpenGLFramebufferObject |
31 | { |
32 | Q_DECLARE_PRIVATE(QOpenGLFramebufferObject) |
33 | public: |
34 | enum Attachment { |
35 | NoAttachment, |
36 | CombinedDepthStencil, |
37 | Depth |
38 | }; |
39 | |
40 | explicit QOpenGLFramebufferObject(const QSize &size, GLenum target = GL_TEXTURE_2D); |
41 | QOpenGLFramebufferObject(int width, int height, GLenum target = GL_TEXTURE_2D); |
42 | |
43 | QOpenGLFramebufferObject(const QSize &size, Attachment attachment, |
44 | GLenum target = GL_TEXTURE_2D, GLenum internalFormat = 0); |
45 | QOpenGLFramebufferObject(int width, int height, Attachment attachment, |
46 | GLenum target = GL_TEXTURE_2D, GLenum internalFormat = 0); |
47 | |
48 | QOpenGLFramebufferObject(const QSize &size, const QOpenGLFramebufferObjectFormat &format); |
49 | QOpenGLFramebufferObject(int width, int height, const QOpenGLFramebufferObjectFormat &format); |
50 | |
51 | virtual ~QOpenGLFramebufferObject(); |
52 | |
53 | void addColorAttachment(const QSize &size, GLenum internalFormat = 0); |
54 | void addColorAttachment(int width, int height, GLenum internalFormat = 0); |
55 | |
56 | QOpenGLFramebufferObjectFormat format() const; |
57 | |
58 | bool isValid() const; |
59 | bool isBound() const; |
60 | bool bind(); |
61 | bool release(); |
62 | |
63 | int width() const { return size().width(); } |
64 | int height() const { return size().height(); } |
65 | |
66 | GLuint texture() const; |
67 | QList<GLuint> textures() const; |
68 | |
69 | GLuint takeTexture(); |
70 | GLuint takeTexture(int colorAttachmentIndex); |
71 | |
72 | QSize size() const; |
73 | QList<QSize> sizes() const; |
74 | |
75 | QImage toImage(bool flipped = true) const; |
76 | QImage toImage(bool flipped, int colorAttachmentIndex) const; |
77 | |
78 | Attachment attachment() const; |
79 | void setAttachment(Attachment attachment); |
80 | |
81 | GLuint handle() const; |
82 | |
83 | static bool bindDefault(); |
84 | |
85 | static bool hasOpenGLFramebufferObjects(); |
86 | |
87 | static bool hasOpenGLFramebufferBlit(); |
88 | |
89 | enum FramebufferRestorePolicy { |
90 | DontRestoreFramebufferBinding, |
91 | RestoreFramebufferBindingToDefault, |
92 | RestoreFrameBufferBinding |
93 | }; |
94 | |
95 | static void blitFramebuffer(QOpenGLFramebufferObject *target, const QRect &targetRect, |
96 | QOpenGLFramebufferObject *source, const QRect &sourceRect, |
97 | GLbitfield buffers, |
98 | GLenum filter, |
99 | int readColorAttachmentIndex, |
100 | int drawColorAttachmentIndex, |
101 | FramebufferRestorePolicy restorePolicy); |
102 | static void blitFramebuffer(QOpenGLFramebufferObject *target, const QRect &targetRect, |
103 | QOpenGLFramebufferObject *source, const QRect &sourceRect, |
104 | GLbitfield buffers, |
105 | GLenum filter, |
106 | int readColorAttachmentIndex, |
107 | int drawColorAttachmentIndex); |
108 | static void blitFramebuffer(QOpenGLFramebufferObject *target, const QRect &targetRect, |
109 | QOpenGLFramebufferObject *source, const QRect &sourceRect, |
110 | GLbitfield buffers = GL_COLOR_BUFFER_BIT, |
111 | GLenum filter = GL_NEAREST); |
112 | static void blitFramebuffer(QOpenGLFramebufferObject *target, |
113 | QOpenGLFramebufferObject *source, |
114 | GLbitfield buffers = GL_COLOR_BUFFER_BIT, |
115 | GLenum filter = GL_NEAREST); |
116 | |
117 | private: |
118 | Q_DISABLE_COPY(QOpenGLFramebufferObject) |
119 | QScopedPointer<QOpenGLFramebufferObjectPrivate> d_ptr; |
120 | friend class QOpenGLPaintDevice; |
121 | friend class QOpenGLFBOGLPaintDevice; |
122 | }; |
123 | |
124 | class QOpenGLFramebufferObjectFormatPrivate; |
125 | class Q_OPENGL_EXPORT QOpenGLFramebufferObjectFormat |
126 | { |
127 | public: |
128 | QOpenGLFramebufferObjectFormat(); |
129 | QOpenGLFramebufferObjectFormat(const QOpenGLFramebufferObjectFormat &other); |
130 | QOpenGLFramebufferObjectFormat &operator=(const QOpenGLFramebufferObjectFormat &other); |
131 | ~QOpenGLFramebufferObjectFormat(); |
132 | |
133 | void setSamples(int samples); |
134 | int samples() const; |
135 | |
136 | void setMipmap(bool enabled); |
137 | bool mipmap() const; |
138 | |
139 | void setAttachment(QOpenGLFramebufferObject::Attachment attachment); |
140 | QOpenGLFramebufferObject::Attachment attachment() const; |
141 | |
142 | void setTextureTarget(GLenum target); |
143 | GLenum textureTarget() const; |
144 | |
145 | void setInternalTextureFormat(GLenum internalTextureFormat); |
146 | GLenum internalTextureFormat() const; |
147 | |
148 | bool operator==(const QOpenGLFramebufferObjectFormat& other) const; |
149 | bool operator!=(const QOpenGLFramebufferObjectFormat& other) const; |
150 | |
151 | private: |
152 | QOpenGLFramebufferObjectFormatPrivate *d; |
153 | |
154 | void detach(); |
155 | }; |
156 | |
157 | QT_END_NAMESPACE |
158 | |
159 | #endif // QOPENGLFRAMEBUFFEROBJECT_H |
160 | |