Implement a shadow mapping render pass. More...

#include <vtkShadowMapPass.h>

Inheritance diagram for vtkShadowMapPass:

Collaboration diagram for vtkShadowMapPass:

Public Types
typedef vtkRenderPass	Superclass
Public Member Functions
virtual int	IsA (const char *type)
vtkShadowMapPass *	NewInstance () const
void	PrintSelf (ostream &os, vtkIndent indent)
void	ReleaseGraphicsResources (vtkWindow *w)

virtual void	Render (const vtkRenderState *s)

virtual vtkShadowMapBakerPass *	GetShadowMapBakerPass ()
virtual void	SetShadowMapBakerPass (vtkShadowMapBakerPass *shadowMapBakerPass)

virtual vtkRenderPass *	GetOpaquePass ()
virtual void	SetOpaquePass (vtkRenderPass *opaquePass)
Static Public Member Functions
static vtkShadowMapPass *	New ()
static int	IsTypeOf (const char *type)
static vtkShadowMapPass *	SafeDownCast (vtkObjectBase *o)
Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const
	vtkShadowMapPass ()
virtual	~vtkShadowMapPass ()
void	BuildSpotLightIntensityMap ()
void	CheckSupport (vtkOpenGLRenderWindow *w)
Protected Attributes
vtkShadowMapBakerPass *	ShadowMapBakerPass
vtkRenderPass *	CompositeRGBAPass
vtkRenderPass *	OpaquePass
vtkFrameBufferObject *	FrameBufferObject
vtkShadowMapPassTextures *	ShadowMaps
vtkShadowMapPassLightCameras *	LightCameras
vtkShaderProgram2 *	Program
vtkTextureObject *	IntensityMap
vtkSampleFunction *	IntensitySource
vtkImageExport *	IntensityExporter
vtkImplicitHalo *	Halo
vtkTimeStamp	LastRenderTime

Detailed Description

Implement a shadow mapping render pass.

Render the opaque polygonal geometry of a scene with shadow maps (a technique to render hard shadows in hardware).

This pass expects an initialized depth buffer and color buffer. Initialized buffers means they have been cleared with farest z-value and background color/gradient/transparent color. An opaque pass may have been performed right after the initialization.

Its delegate is usually set to a vtkOpaquePass.

Implementation:: The first pass of the algorithm is to generate a shadow map per light (depth map from the light point of view) by rendering the opaque objects with the OCCLUDER property keys. The second pass is to render the opaque objects with the RECEIVER keys.

See also:: vtkRenderPass, vtkOpaquePass

Tests:: vtkShadowMapPass (Tests)

Definition at line 63 of file vtkShadowMapPass.h.

Member Typedef Documentation

typedef vtkRenderPass vtkShadowMapPass::Superclass

Reimplemented from vtkRenderPass.

Definition at line 67 of file vtkShadowMapPass.h.

Constructor & Destructor Documentation

vtkShadowMapPass::vtkShadowMapPass ( ) [protected]

Default constructor. DelegatetPass is set to NULL.

virtual vtkShadowMapPass::~vtkShadowMapPass ( ) [protected, virtual]

Destructor.

Member Function Documentation

static vtkShadowMapPass* vtkShadowMapPass::New ( ) [static]

Create an object with Debug turned off, modified time initialized to zero, and reference counting on.

Reimplemented from vtkObject.

static int vtkShadowMapPass::IsTypeOf ( const char * name ) [static]

Return 1 if this class type is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkRenderPass.

virtual int vtkShadowMapPass::IsA ( const char * name ) [virtual]

Return 1 if this class is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkRenderPass.

static vtkShadowMapPass* vtkShadowMapPass::SafeDownCast ( vtkObjectBase * o ) [static]

Reimplemented from vtkRenderPass.

virtual vtkObjectBase* vtkShadowMapPass::NewInstanceInternal ( ) const [protected, virtual]

Reimplemented from vtkRenderPass.

vtkShadowMapPass* vtkShadowMapPass::NewInstance ( ) const

Reimplemented from vtkRenderPass.

void vtkShadowMapPass::PrintSelf	(	ostream &	os,
		vtkIndent	indent
	)		`[virtual]`

Methods invoked by print to print information about the object including superclasses. Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes.

Reimplemented from vtkRenderPass.

virtual void vtkShadowMapPass::Render ( const vtkRenderState * s ) [virtual]

Perform rendering according to a render state s.

Precondition:: s_exists: s!=0

Implements vtkRenderPass.

void vtkShadowMapPass::ReleaseGraphicsResources ( vtkWindow * w ) [virtual]

Release graphics resources and ask components to release their own resources.

Precondition:: w_exists: w!=0

Reimplemented from vtkRenderPass.

virtual vtkShadowMapBakerPass* vtkShadowMapPass::GetShadowMapBakerPass ( ) [virtual]

Pass that generates the shadow maps. the vtkShadowMapPass will use the Resolution ivar of this pass. Initial value is a NULL pointer.

virtual void vtkShadowMapPass::SetShadowMapBakerPass ( vtkShadowMapBakerPass * shadowMapBakerPass ) [virtual]

Pass that generates the shadow maps. the vtkShadowMapPass will use the Resolution ivar of this pass. Initial value is a NULL pointer.

virtual vtkRenderPass* vtkShadowMapPass::GetOpaquePass ( ) [virtual]

Pass that render the opaque geometry, with no camera pass (otherwise it does not work with Ice-T). Initial value is a NULL pointer. Typically a sequence pass with a light pass and opaque pass. This should be the Opaque pass of the vtkShadowMapBakerPass without the vtkCameraPass.

virtual void vtkShadowMapPass::SetOpaquePass ( vtkRenderPass * opaquePass ) [virtual]

Pass that render the opaque geometry, with no camera pass (otherwise it does not work with Ice-T). Initial value is a NULL pointer. Typically a sequence pass with a light pass and opaque pass. This should be the Opaque pass of the vtkShadowMapBakerPass without the vtkCameraPass.

void vtkShadowMapPass::BuildSpotLightIntensityMap ( ) [protected]

Build the intensity map.

void vtkShadowMapPass::CheckSupport ( vtkOpenGLRenderWindow * w ) [protected]

Check if shadow mapping is supported by the current OpenGL context.