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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QOPENGLBUFFER_H
#define QOPENGLBUFFER_H
#include <QtOpenGL/qtopenglglobal.h>
#ifndef QT_NO_OPENGL
#include <QtGui/qopengl.h>
QT_BEGIN_NAMESPACE
class QOpenGLBufferPrivate;
class Q_OPENGL_EXPORT QOpenGLBuffer
{
public:
enum Type
{
VertexBuffer = 0x8892, // GL_ARRAY_BUFFER
IndexBuffer = 0x8893, // GL_ELEMENT_ARRAY_BUFFER
PixelPackBuffer = 0x88EB, // GL_PIXEL_PACK_BUFFER
PixelUnpackBuffer = 0x88EC // GL_PIXEL_UNPACK_BUFFER
};
QOpenGLBuffer();
explicit QOpenGLBuffer(QOpenGLBuffer::Type type);
QOpenGLBuffer(const QOpenGLBuffer &other);
QOpenGLBuffer(QOpenGLBuffer &&other) noexcept
: d_ptr{std::exchange(other.d_ptr, nullptr)} {}
~QOpenGLBuffer();
QOpenGLBuffer &operator=(const QOpenGLBuffer &other);
QT_MOVE_ASSIGNMENT_OPERATOR_IMPL_VIA_MOVE_AND_SWAP(QOpenGLBuffer)
void swap(QOpenGLBuffer &other) noexcept
{ return qt_ptr_swap(d_ptr, other.d_ptr); }
enum UsagePattern
{
StreamDraw = 0x88E0, // GL_STREAM_DRAW
StreamRead = 0x88E1, // GL_STREAM_READ
StreamCopy = 0x88E2, // GL_STREAM_COPY
StaticDraw = 0x88E4, // GL_STATIC_DRAW
StaticRead = 0x88E5, // GL_STATIC_READ
StaticCopy = 0x88E6, // GL_STATIC_COPY
DynamicDraw = 0x88E8, // GL_DYNAMIC_DRAW
DynamicRead = 0x88E9, // GL_DYNAMIC_READ
DynamicCopy = 0x88EA // GL_DYNAMIC_COPY
};
enum Access
{
ReadOnly = 0x88B8, // GL_READ_ONLY
WriteOnly = 0x88B9, // GL_WRITE_ONLY
ReadWrite = 0x88BA // GL_READ_WRITE
};
enum RangeAccessFlag
{
RangeRead = 0x0001, // GL_MAP_READ_BIT
RangeWrite = 0x0002, // GL_MAP_WRITE_BIT
RangeInvalidate = 0x0004, // GL_MAP_INVALIDATE_RANGE_BIT
RangeInvalidateBuffer = 0x0008, // GL_MAP_INVALIDATE_BUFFER_BIT
RangeFlushExplicit = 0x0010, // GL_MAP_FLUSH_EXPLICIT_BIT
RangeUnsynchronized = 0x0020 // GL_MAP_UNSYNCHRONIZED_BIT
};
Q_DECLARE_FLAGS(RangeAccessFlags, RangeAccessFlag)
QOpenGLBuffer::Type type() const;
QOpenGLBuffer::UsagePattern usagePattern() const;
void setUsagePattern(QOpenGLBuffer::UsagePattern value);
bool create();
bool isCreated() const;
void destroy();
bool bind();
void release();
static void release(QOpenGLBuffer::Type type);
GLuint bufferId() const;
int size() const;
bool read(int offset, void *data, int count);
void write(int offset, const void *data, int count);
void allocate(const void *data, int count);
inline void allocate(int count) { allocate(nullptr, count); }
void *map(QOpenGLBuffer::Access access);
void *mapRange(int offset, int count, QOpenGLBuffer::RangeAccessFlags access);
bool unmap();
private:
QOpenGLBufferPrivate *d_ptr;
Q_DECLARE_PRIVATE(QOpenGLBuffer)
};
Q_DECLARE_SHARED(QOpenGLBuffer)
Q_DECLARE_OPERATORS_FOR_FLAGS(QOpenGLBuffer::RangeAccessFlags)
QT_END_NAMESPACE
#endif // QT_NO_OPENGL
#endif
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