openscenegraph
Public Member Functions | Protected Member Functions | Protected Attributes
osgShadow::SoftShadowMap Class Reference
Inheritance diagram for osgShadow::SoftShadowMap:
osgShadow::ShadowMap osgShadow::ShadowTechnique osg::Object osg::Referenced

List of all members.

Public Member Functions

 SoftShadowMap ()
 SoftShadowMap (const SoftShadowMap &es, const osg::CopyOp &copyop=osg::CopyOp::SHALLOW_COPY)
 META_Object (osgShadow, SoftShadowMap)
void setSoftnessWidth (float softnessWidth)
float getSoftnessWidth () const
void setJitteringScale (float jitteringScale)
float getJitteringScale () const
void setJitterTextureUnit (unsigned int jitterTextureUnit)
unsigned int getJitterTextureUnit () const
void setBias (float bias)
float getBias () const

Protected Member Functions

virtual ~SoftShadowMap (void)
void createUniforms ()
void createShaders ()
void initJittering (osg::StateSet *ss)

Protected Attributes

osg::ref_ptr< osg::Uniform_softnessWidthUniform
osg::ref_ptr< osg::Uniform_jitteringScaleUniform
float _softnessWidth
float _jitteringScale
unsigned int _jitterTextureUnit

Detailed Description

SoftShadowMap provides an implementation of soft shadows with shadow maps.


Constructor & Destructor Documentation

osgShadow::SoftShadowMap::SoftShadowMap ( )
osgShadow::SoftShadowMap::SoftShadowMap ( const SoftShadowMap es,
const osg::CopyOp copyop = osg::CopyOp::SHALLOW_COPY 
)
virtual osgShadow::SoftShadowMap::~SoftShadowMap ( void  ) [inline, protected, virtual]

Member Function Documentation

void osgShadow::SoftShadowMap::createShaders ( ) [protected, virtual]

Reimplemented from osgShadow::ShadowMap.

void osgShadow::SoftShadowMap::createUniforms ( ) [protected, virtual]

Create the managed Uniforms

Reimplemented from osgShadow::ShadowMap.

float osgShadow::SoftShadowMap::getBias ( ) const [inline]

Return the bias value

float osgShadow::SoftShadowMap::getJitteringScale ( ) const [inline]

Get the value used for jittering scale in the shader.

unsigned int osgShadow::SoftShadowMap::getJitterTextureUnit ( ) const [inline]

Get the texture unit that the jitter texture will be applied on.

float osgShadow::SoftShadowMap::getSoftnessWidth ( ) const [inline]

Get the value used for width of the soft penumbra in the shader.

void osgShadow::SoftShadowMap::initJittering ( osg::StateSet ss) [protected]
osgShadow::SoftShadowMap::META_Object ( osgShadow  ,
SoftShadowMap   
)
void osgShadow::SoftShadowMap::setBias ( float  bias) [inline]

Add a small bias to the z-value, this can reduce shadow acne problem. This is the same as calling setPolygonOffset(osg::Vec2(bias,0)); Suitable values are 0-0.005 Default is 0.

void osgShadow::SoftShadowMap::setJitteringScale ( float  jitteringScale)

Set the values for jittering scale the shader will use. Zero is no jittering (i.e. see the banding in penumbra) High values (>64) cause 'pixelization' of the penumbra. Usually but not necessarily power of two number. Default is 32.

void osgShadow::SoftShadowMap::setJitterTextureUnit ( unsigned int  jitterTextureUnit)

Set the texture unit that the jitter texture will be applied on.

void osgShadow::SoftShadowMap::setSoftnessWidth ( float  softnessWidth)

Set the values for width of the soft penumbra the shader will use. Zero is for hard shadow (no penumbra). 0.01 is already very soft penumbra. Default is 0.005.


Member Data Documentation


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