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 QGLBUFFER_H 41 #define QGLBUFFER_H 42 43 #include <QtCore/qscopedpointer.h> 44 #include <QtOpenGL/qgl.h> 45 46 QT_BEGIN_NAMESPACE 47 48 49 class QGLBufferPrivate; 50 51 class Q_OPENGL_EXPORT QGLBuffer 52 { 53 public: 54 enum Type 55 { 56 VertexBuffer = 0x8892, // GL_ARRAY_BUFFER 57 IndexBuffer = 0x8893, // GL_ELEMENT_ARRAY_BUFFER 58 PixelPackBuffer = 0x88EB, // GL_PIXEL_PACK_BUFFER 59 PixelUnpackBuffer = 0x88EC // GL_PIXEL_UNPACK_BUFFER 60 }; 61 62 QGLBuffer(); 63 explicit QGLBuffer(QGLBuffer::Type type); 64 QGLBuffer(const QGLBuffer &other); 65 ~QGLBuffer(); 66 67 QGLBuffer &operator=(const QGLBuffer &other); 68 69 enum UsagePattern 70 { 71 StreamDraw = 0x88E0, // GL_STREAM_DRAW 72 StreamRead = 0x88E1, // GL_STREAM_READ 73 StreamCopy = 0x88E2, // GL_STREAM_COPY 74 StaticDraw = 0x88E4, // GL_STATIC_DRAW 75 StaticRead = 0x88E5, // GL_STATIC_READ 76 StaticCopy = 0x88E6, // GL_STATIC_COPY 77 DynamicDraw = 0x88E8, // GL_DYNAMIC_DRAW 78 DynamicRead = 0x88E9, // GL_DYNAMIC_READ 79 DynamicCopy = 0x88EA // GL_DYNAMIC_COPY 80 }; 81 82 enum Access 83 { 84 ReadOnly = 0x88B8, // GL_READ_ONLY 85 WriteOnly = 0x88B9, // GL_WRITE_ONLY 86 ReadWrite = 0x88BA // GL_READ_WRITE 87 }; 88 89 QGLBuffer::Type type() const; 90 91 QGLBuffer::UsagePattern usagePattern() const; 92 void setUsagePattern(QGLBuffer::UsagePattern value); 93 94 bool create(); 95 bool isCreated() const; 96 97 void destroy(); 98 99 bool bind(); 100 void release(); 101 102 static void release(QGLBuffer::Type type); 103 104 GLuint bufferId() const; 105 106 int size() const; 107 108 bool read(int offset, void *data, int count); 109 void write(int offset, const void *data, int count); 110 111 void allocate(const void *data, int count); allocate(int count)112 inline void allocate(int count) { allocate(nullptr, count); } 113 114 void *map(QGLBuffer::Access access); 115 bool unmap(); 116 117 private: 118 QGLBufferPrivate *d_ptr; 119 120 Q_DECLARE_PRIVATE(QGLBuffer) 121 }; 122 123 QT_END_NAMESPACE 124 125 #endif 126