Ogre::StencilState Struct Reference

Describes the stencil buffer operation. More...

#include <OgreRenderSystem.h>

Public Member Functions
	StencilState ()

Public Attributes
uint32	compareMask
	The bitmask applied to both the stencil value and the reference value before comparison. More...
CompareFunction	compareOp
	Comparison operator for the stencil test. More...
StencilOperation	depthFailOp
	The action to perform when the stencil check passes, but the depth buffer check fails. More...
StencilOperation	depthStencilPassOp
	The action to take when both the stencil and depth check pass. More...
bool	enabled: 1
	Turns stencil buffer checking on or off. More...
uint32	referenceValue
	The reference value used in the stencil comparison. More...
StencilOperation	stencilFailOp
	The action to perform when the stencil check fails. More...
bool	twoSidedOperation: 1
	Toggles two-sided stencil operation, which swaps increment and decrement for back-facing polygons. More...
uint32	writeMask
	The bitmask the controls which bits from stencilRefValue will be written to stencil buffer (valid for operations such as SOP_REPLACE) More...

Detailed Description

Describes the stencil buffer operation.

The stencil buffer is used to mask out pixels in the render target, allowing you to do effects like mirrors, cut-outs, stencil shadows and more. Each of your batches of rendering is likely to ignore the stencil buffer, update it with new values, or apply it to mask the output of the render.

The stencil test is: $$(referenceValue\,\&\,compareMask)\;compareOp\;(stencilBuffer\,\&\,compareMask)$$

The result of this will cause one of 3 actions depending on whether

1. the stencil test fails
2. the stencil test succeeds but the depth buffer check fails
3. both depth buffer check and stencil test pass

Constructor & Destructor Documentation

StencilState()

Ogre::StencilState::StencilState ( )

inline

Member Data Documentation

compareOp

CompareFunction Ogre::StencilState::compareOp

Comparison operator for the stencil test.

stencilFailOp

StencilOperation Ogre::StencilState::stencilFailOp

The action to perform when the stencil check fails.

depthFailOp

StencilOperation Ogre::StencilState::depthFailOp

The action to perform when the stencil check passes, but the depth buffer check fails.

depthStencilPassOp

StencilOperation Ogre::StencilState::depthStencilPassOp

The action to take when both the stencil and depth check pass.

referenceValue

uint32 Ogre::StencilState::referenceValue

The reference value used in the stencil comparison.

compareMask

uint32 Ogre::StencilState::compareMask

The bitmask applied to both the stencil value and the reference value before comparison.

writeMask

uint32 Ogre::StencilState::writeMask

The bitmask the controls which bits from stencilRefValue will be written to stencil buffer (valid for operations such as SOP_REPLACE)

enabled

bool Ogre::StencilState::enabled

Turns stencil buffer checking on or off.

twoSidedOperation

bool Ogre::StencilState::twoSidedOperation

Toggles two-sided stencil operation, which swaps increment and decrement for back-facing polygons.

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The documentation for this struct was generated from the following file:

• OgreRenderSystem.h