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| |
| #include "qmemorybarrier.h" |
| #include "qmemorybarrier_p.h" |
| #include <Qt3DRender/qframegraphnodecreatedchange.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| namespace Qt3DRender { |
| |
| /*! |
| \class Qt3DRender::QMemoryBarrier |
| \inmodule Qt3DRender |
| \since 5.9 |
| \ingroup framegraph |
| \brief Class to emplace a memory barrier. |
| |
| A Qt3DRender::QMemoryBarrier FrameGraph node is used to emplace a specific |
| memory barrier at a specific time of the rendering. This is required to |
| properly synchronize drawing and compute commands on the GPU. |
| |
| The barrier defines the ordering of memory operations issued by a prior |
| command. This means that if command1 is manipulating a buffer that is to be |
| used as a vertex attribute buffer in a following command2, then the memory |
| barrier should be placed after command1 and setting the appropriate barrier |
| type for vertex attribute buffer. |
| |
| When a QMemoryBarrier node is found in a FrameGraph branch, the barrier |
| will be enforced prior to any draw or compute command even if these are |
| defined deeper in the branch. |
| |
| For OpenGL rendering, this page gives more info about the |
| \l {https://www.opengl.org/wiki/Memory_Model}{Memory Model} |
| */ |
| |
| /*! |
| \qmltype MemoryBarrier |
| \inqmlmodule Qt3D.Render |
| \instantiates Qt3DRender::QMemoryBarrier |
| \inherits FrameGraphNode |
| \since 5.9 |
| \brief Class to place a memory barrier. |
| |
| A MemoryBarrier FrameGraph node is used to emplace a specific |
| memory barrier at a specific time of the rendering. This is required to |
| properly synchronize drawing and compute commands on the GPU. |
| |
| The barrier defines the ordering of memory operations issued by a prior |
| command. This means that if command1 is manipulating a buffer that is to be |
| used as a vertex attribute buffer in a following command2, then the memory |
| barrier should be placed after command1 and setting the appropriate barrier |
| type for vertex attribute buffer. |
| |
| When a QMemoryBarrier node is found in a FrameGraph branch, the barrier |
| will be enforced prior to any draw or compute command even if these are |
| defined deeper in the branch. |
| |
| For OpenGL rendering, this page gives more info about the |
| \l {https://www.opengl.org/wiki/Memory_Model}{Memory Model} |
| */ |
| |
| /*! |
| \enum QMemoryBarrier::Operation |
| |
| This enum type describes types of buffer to be cleared. |
| \value None |
| \value ElementArray |
| \value Uniform |
| \value TextureFetch |
| \value ShaderImageAccess |
| \value Command |
| \value PixelBuffer |
| \value TextureUpdate |
| \value BufferUpdate |
| \value FrameBuffer |
| \value TransformFeedback |
| \value AtomicCounter |
| \value ShaderStorage |
| \value QueryBuffer |
| \value VertexAttributeArray |
| \value All |
| */ |
| |
| |
| QMemoryBarrierPrivate::QMemoryBarrierPrivate() |
| : QFrameGraphNodePrivate() |
| , m_waitOperations(QMemoryBarrier::None) |
| { |
| } |
| |
| QMemoryBarrier::QMemoryBarrier(Qt3DCore::QNode *parent) |
| : QFrameGraphNode(*new QMemoryBarrierPrivate(), parent) |
| { |
| } |
| |
| QMemoryBarrier::~QMemoryBarrier() |
| { |
| } |
| |
| void QMemoryBarrier::setWaitOperations(QMemoryBarrier::Operations waitOperations) |
| { |
| Q_D(QMemoryBarrier); |
| if (waitOperations != d->m_waitOperations) { |
| d->m_waitOperations = waitOperations; |
| emit waitOperationsChanged(waitOperations); |
| d->notifyPropertyChange("waitOperations", QVariant::fromValue(waitOperations)); // TODOSYNC |
| } |
| } |
| |
| QMemoryBarrier::Operations QMemoryBarrier::waitOperations() const |
| { |
| Q_D(const QMemoryBarrier); |
| return d->m_waitOperations; |
| } |
| |
| QMemoryBarrier::QMemoryBarrier(QMemoryBarrierPrivate &dd, Qt3DCore::QNode *parent) |
| : QFrameGraphNode(dd, parent) |
| { |
| } |
| |
| Qt3DCore::QNodeCreatedChangeBasePtr QMemoryBarrier::createNodeCreationChange() const |
| { |
| auto creationChange = QFrameGraphNodeCreatedChangePtr<QMemoryBarrierData>::create(this); |
| QMemoryBarrierData &data = creationChange->data; |
| Q_D(const QMemoryBarrier); |
| data.waitOperations = d->m_waitOperations; |
| return creationChange; |
| } |
| |
| |
| } // Qt3DRender |
| |
| QT_END_NAMESPACE |