Inheritance diagram for RenderNodeState:

Collaboration diagram for RenderNodeState:

Public Member Functions
const QMatrix4x4 *	projectionMatrix () const override

QRect	scissorRect () const override

bool	scissorEnabled () const override

int	stencilValue () const override

bool	stencilEnabled () const override

const QRegion *	clipRegion () const override

Public Member Functions inherited from QSGRenderNode::RenderState
virtual	~RenderState ()

virtual const QMatrix4x4 *	projectionMatrix () const =0

virtual QRect	scissorRect () const =0

virtual bool	scissorEnabled () const =0

virtual int	stencilValue () const =0

virtual bool	stencilEnabled () const =0

virtual const QRegion *	clipRegion () const =0

virtual void *	get (const char *state) const

Public Attributes
QMatrix4x4	ident

QRegion	cr

Detailed Description

Definition at line 198 of file qsgsoftwarerenderablenode.cpp.

Member Function Documentation

◆ clipRegion()

const QRegion * RenderNodeState::clipRegion ( ) const

inlineoverridevirtual

Returns: the current clip region or null for backends where clipping is implemented via stencil or scissoring.

The software backend uses no projection, scissor or stencil, meaning most of the render state is not in use. However, the clip region that can be set on the QPainter still has to be communicated since reconstructing this manually in render() is not reasonable. It can therefore be queried via this function. The region is in world coordinates and can be passed to QPainter::setClipRegion() with Qt::ReplaceClip. This must be done before calling QPainter::setTransform() since the clip region is already mapped to the transform provided in QSGRenderNode::matrix().

Implements QSGRenderNode::RenderState.

Definition at line 205 of file qsgsoftwarerenderablenode.cpp.

References cr.

◆ projectionMatrix()

const QMatrix4x4 * RenderNodeState::projectionMatrix ( ) const

inlineoverridevirtual

Returns: pointer to the current projection matrix.

The model-view matrix can be retrieved with QSGRenderNode::matrix(). Typically {projection * modelview} is the matrix that is then used in the vertex shader to transform the vertices.

Implements QSGRenderNode::RenderState.

Definition at line 200 of file qsgsoftwarerenderablenode.cpp.

References ident.

◆ scissorEnabled()

bool RenderNodeState::scissorEnabled ( ) const

inlineoverridevirtual

Returns: the current state of scissoring.

Note: Only relevant for graphics APIs that have a dedicated on/off state of scissoring.

Implements QSGRenderNode::RenderState.

Definition at line 202 of file qsgsoftwarerenderablenode.cpp.

◆ scissorRect()

QRect RenderNodeState::scissorRect ( ) const

inlineoverridevirtual

Returns: the current scissor rectangle when clipping is active. x and y are the bottom left coordinates.

Implements QSGRenderNode::RenderState.

Definition at line 201 of file qsgsoftwarerenderablenode.cpp.

◆ stencilEnabled()

bool RenderNodeState::stencilEnabled ( ) const

inlineoverridevirtual

Returns: the current state of stencil testing.

Note: With graphics APIs where stencil testing is enabled in pipeline state objects, instead of individual state-setting commands, it is up to the implementation of render() to enable stencil testing with operations KEEP, comparison function EQUAL, and a read and write mask of 0xFF.

Implements QSGRenderNode::RenderState.

Definition at line 204 of file qsgsoftwarerenderablenode.cpp.