QBuffer Class | Qt 3D 5.15.19 (original) (raw)
class Qt3DRender::QBuffer
Provides a data store for raw data to later be used as vertices or uniforms. More...
| Header: | #include <Qt3DRender/QBuffer> |
|---|---|
| qmake: | QT += 3drender |
| Instantiated By: | Buffer |
| Inherits: | Qt3DCore::QNode |
Public Types
| enum | AccessType { Write, Read, ReadWrite } |
|---|---|
| enum | UsageType { StreamDraw, StreamRead, StreamCopy, StaticDraw, StaticRead, …, DynamicCopy } |
Properties
- accessType : AccessType
- syncData : bool
- usage : UsageType
Public Functions
Public Slots
Signals
Member Type Documentation
enum QBuffer::AccessType
| Constant | Value | Description |
|---|---|---|
| Qt3DRender::QBuffer::Write | 0x1 | Write access |
| Qt3DRender::QBuffer::Read | 0x2 | Read access |
| Qt3DRender::QBuffer::ReadWrite | Write|Read | Write|Read |
enum QBuffer::UsageType
The type of the usage.
| Constant | Value | Description |
|---|---|---|
| Qt3DRender::QBuffer::StreamDraw | 0x88E0 | GL_STREAM_DRAW |
| Qt3DRender::QBuffer::StreamRead | 0x88E1 | GL_STREAM_READ |
| Qt3DRender::QBuffer::StreamCopy | 0x88E2 | GL_STREAM_COPY |
| Qt3DRender::QBuffer::StaticDraw | 0x88E4 | GL_STATIC_DRAW |
| Qt3DRender::QBuffer::StaticRead | 0x88E5 | GL_STATIC_READ |
| Qt3DRender::QBuffer::StaticCopy | 0x88E6 | GL_STATIC_COPY |
| Qt3DRender::QBuffer::DynamicDraw | 0x88E8 | GL_DYNAMIC_DRAW |
| Qt3DRender::QBuffer::DynamicRead | 0x88E9 | GL_DYNAMIC_READ |
| Qt3DRender::QBuffer::DynamicCopy | 0x88EA | GL_DYNAMIC_COPY |
Property Documentation
accessType : AccessType
Returns the AccessType of the buffer.
Access functions:
| Qt3DRender::QBuffer::AccessType | accessType() const |
|---|---|
| void | setAccessType(Qt3DRender::QBuffer::AccessType access) |
Notifier signal:
| void | accessTypeChanged(Qt3DRender::QBuffer::AccessType access) |
|---|
See also QBuffer::AccessType.
syncData : bool
Holds the syncData flag. When syncData is true, this will force data created by a Qt3DRender::QBufferDataGenerator to also be updated on the frontend Qt3DRender::QBuffer node. By default syncData is false.
Note: : This has no effect if the buffer's data was set directly using the data property.
Access functions:
| bool | isSyncData() const |
|---|---|
| void | setSyncData(bool syncData) |
Notifier signal:
| void | syncDataChanged(bool syncData) |
|---|
usage : UsageType
Holds the buffer usage.
Access functions:
| Qt3DRender::QBuffer::UsageType | usage() const |
|---|---|
| void | setUsage(Qt3DRender::QBuffer::UsageType usage) |
Notifier signal:
| void | usageChanged(Qt3DRender::QBuffer::UsageType usage) |
|---|
Member Function Documentation
QBuffer::QBuffer(Qt3DCore::QNode *parent = nullptr)
Constructs a new QBuffer with parent.
[signal] void QBuffer::dataAvailable()
This signal is emitted when data becomes available.
[signal] void QBuffer::dataChanged(const QByteArray &bytes)
This signal is emitted with bytes when data changes.
QByteArray QBuffer::data() const
Returns the data.
See also setData().
Qt3DRender::QBufferDataGeneratorPtr QBuffer::dataGenerator() const
Returns the buffer functor.
See also setDataGenerator().
void QBuffer::setData(const QByteArray &bytes)
Sets bytes as data.
See also data().
void QBuffer::setDataGenerator(const Qt3DRender::QBufferDataGeneratorPtr &functor)
Sets the buffer functor.
See also dataGenerator().
void QBuffer::updateData(int offset, const QByteArray &bytes)
Updates the data by replacing it with bytes at offset.
Note: This function can be invoked via the meta-object system and from QML. See Q_INVOKABLE.
Related Non-Members
typedef QBufferDataGeneratorPtr
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