VTK
Public Types | Public Member Functions | Static Public Member Functions | Protected Member Functions | Protected Attributes | List of all members
vtkOpenGLHAVSVolumeMapper Class Reference

Hardware-Assisted Visibility Sorting unstructured grid mapper, OpenGL implementation. More...

#include <vtkOpenGLHAVSVolumeMapper.h>

Inheritance diagram for vtkOpenGLHAVSVolumeMapper:
[legend]
Collaboration diagram for vtkOpenGLHAVSVolumeMapper:
[legend]

Public Types

typedef vtkHAVSVolumeMapper Superclass
- Public Types inherited from vtkHAVSVolumeMapper
typedef
vtkUnstructuredGridVolumeMapper 
Superclass
- Public Types inherited from vtkUnstructuredGridVolumeMapper
enum  { COMPOSITE_BLEND, MAXIMUM_INTENSITY_BLEND }
typedef vtkAbstractVolumeMapper Superclass
- Public Types inherited from vtkAbstractVolumeMapper
typedef vtkAbstractMapper3D Superclass
- Public Types inherited from vtkAbstractMapper3D
typedef vtkAbstractMapper Superclass
- Public Types inherited from vtkAbstractMapper
typedef vtkAlgorithm Superclass
- Public Types inherited from vtkAlgorithm
typedef vtkObject Superclass
- Public Types inherited from vtkObject
typedef vtkObjectBase Superclass

Public Member Functions

virtual const char * GetClassName ()
virtual int IsA (const char *type)
virtual void PrintSelf (ostream &os, vtkIndent indent)
virtual void Render (vtkRenderer *ren, vtkVolume *vol)
virtual void ReleaseGraphicsResources (vtkWindow *)
virtual void SetGPUDataStructures (bool)
virtual bool SupportedByHardware (vtkRenderer *r)
- Public Member Functions inherited from vtkHAVSVolumeMapper
virtual void SetPartiallyRemoveNonConvexities (bool)
virtual bool GetPartiallyRemoveNonConvexities ()
virtual void SetLevelOfDetailTargetTime (float)
virtual float GetLevelOfDetailTargetTime ()
virtual void SetLevelOfDetail (bool)
virtual bool GetLevelOfDetail ()
void SetLevelOfDetailMethod (int)
virtual int GetLevelOfDetailMethod ()
void SetLevelOfDetailMethodField ()
void SetLevelOfDetailMethodArea ()
virtual void SetKBufferSize (int)
virtual int GetKBufferSize ()
void SetKBufferSizeTo2 ()
void SetKBufferSizeTo6 ()
virtual bool SupportedByHardware (vtkRenderer *vtkNotUsed(r))
virtual bool GetGPUDataStructures ()
- Public Member Functions inherited from vtkUnstructuredGridVolumeMapper
virtual void SetBlendMode (int)
void SetBlendModeToComposite ()
void SetBlendModeToMaximumIntensity ()
virtual int GetBlendMode ()
virtual void SetInput (vtkUnstructuredGrid *)
virtual void SetInput (vtkDataSet *)
vtkUnstructuredGridGetInput ()
- Public Member Functions inherited from vtkAbstractVolumeMapper
const char * GetScalarModeAsString ()
vtkDataSetGetDataSetInput ()
vtkDataObjectGetDataObjectInput ()
virtual double * GetBounds ()
virtual void GetBounds (double bounds[6])
virtual void SetScalarMode (int)
virtual int GetScalarMode ()
void SetScalarModeToDefault ()
void SetScalarModeToUsePointData ()
void SetScalarModeToUseCellData ()
void SetScalarModeToUsePointFieldData ()
void SetScalarModeToUseCellFieldData ()
virtual void SelectScalarArray (int arrayNum)
virtual void SelectScalarArray (const char *arrayName)
virtual char * GetArrayName ()
virtual int GetArrayId ()
virtual int GetArrayAccessMode ()
virtual float GetGradientMagnitudeScale ()
virtual float GetGradientMagnitudeBias ()
virtual float GetGradientMagnitudeScale (int)
virtual float GetGradientMagnitudeBias (int)
- Public Member Functions inherited from vtkAbstractMapper3D
double GetLength ()
virtual int IsARayCastMapper ()
virtual int IsARenderIntoImageMapper ()
double * GetCenter ()
void GetCenter (double center[3])
- Public Member Functions inherited from vtkAbstractMapper
virtual unsigned long GetMTime ()
void SetClippingPlanes (vtkPlanes *planes)
void ShallowCopy (vtkAbstractMapper *m)
virtual double GetTimeToDraw ()
void AddClippingPlane (vtkPlane *plane)
void RemoveClippingPlane (vtkPlane *plane)
void RemoveAllClippingPlanes ()
virtual void SetClippingPlanes (vtkPlaneCollection *)
virtual vtkPlaneCollectionGetClippingPlanes ()
- Public Member Functions inherited from vtkAlgorithm
int HasExecutive ()
vtkExecutiveGetExecutive ()
virtual void SetExecutive (vtkExecutive *executive)
virtual int ModifyRequest (vtkInformation *request, int when)
vtkInformationGetInputPortInformation (int port)
vtkInformationGetOutputPortInformation (int port)
int GetNumberOfInputPorts ()
int GetNumberOfOutputPorts ()
void UpdateProgress (double amount)
vtkInformationGetInputArrayInformation (int idx)
void RemoveAllInputs ()
vtkDataObjectGetOutputDataObject (int port)
virtual void RemoveInputConnection (int port, vtkAlgorithmOutput *input)
int GetNumberOfInputConnections (int port)
int GetTotalNumberOfInputConnections ()
vtkAlgorithmOutputGetInputConnection (int port, int index)
virtual void Update ()
virtual void UpdateInformation ()
virtual void UpdateWholeExtent ()
void ConvertTotalInputToPortConnection (int ind, int &port, int &conn)
virtual double ComputePriority ()
virtual int ProcessRequest (vtkInformation *request, vtkInformationVector **inInfo, vtkInformationVector *outInfo)
int ProcessRequest (vtkInformation *request, vtkCollection *inInfo, vtkInformationVector *outInfo)
virtual int ComputePipelineMTime (vtkInformation *request, vtkInformationVector **inInfoVec, vtkInformationVector *outInfoVec, int requestFromOutputPort, unsigned long *mtime)
virtual vtkInformationGetInformation ()
virtual void SetInformation (vtkInformation *)
virtual void Register (vtkObjectBase *o)
virtual void UnRegister (vtkObjectBase *o)
virtual void SetAbortExecute (int)
virtual int GetAbortExecute ()
virtual void AbortExecuteOn ()
virtual void AbortExecuteOff ()
virtual void SetProgress (double)
virtual double GetProgress ()
void SetProgressText (const char *ptext)
virtual char * GetProgressText ()
virtual unsigned long GetErrorCode ()
virtual void SetInputArrayToProcess (int idx, int port, int connection, int fieldAssociation, const char *name)
virtual void SetInputArrayToProcess (int idx, int port, int connection, int fieldAssociation, int fieldAttributeType)
virtual void SetInputArrayToProcess (int idx, vtkInformation *info)
virtual void SetInputArrayToProcess (int idx, int port, int connection, const char *fieldAssociation, const char *attributeTypeorName)
vtkDataObjectGetInputDataObject (int port, int connection)
virtual void SetInputConnection (int port, vtkAlgorithmOutput *input)
virtual void SetInputConnection (vtkAlgorithmOutput *input)
virtual void AddInputConnection (int port, vtkAlgorithmOutput *input)
virtual void AddInputConnection (vtkAlgorithmOutput *input)
vtkAlgorithmOutputGetOutputPort (int index)
vtkAlgorithmOutputGetOutputPort ()
virtual void SetReleaseDataFlag (int)
virtual int GetReleaseDataFlag ()
void ReleaseDataFlagOn ()
void ReleaseDataFlagOff ()
int UpdateExtentIsEmpty (vtkDataObject *output)
int UpdateExtentIsEmpty (vtkInformation *pinfo, int extentType)
- Public Member Functions inherited from vtkObject
virtual void DebugOn ()
virtual void DebugOff ()
unsigned char GetDebug ()
void SetDebug (unsigned char debugFlag)
virtual void Modified ()
unsigned long AddObserver (unsigned long event, vtkCommand *, float priority=0.0f)
unsigned long AddObserver (const char *event, vtkCommand *, float priority=0.0f)
vtkCommandGetCommand (unsigned long tag)
void RemoveObserver (vtkCommand *)
void RemoveObservers (unsigned long event, vtkCommand *)
void RemoveObservers (const char *event, vtkCommand *)
int HasObserver (unsigned long event, vtkCommand *)
int HasObserver (const char *event, vtkCommand *)
void RemoveObserver (unsigned long tag)
void RemoveObservers (unsigned long event)
void RemoveObservers (const char *event)
void RemoveAllObservers ()
int HasObserver (unsigned long event)
int HasObserver (const char *event)
template<class U , class T >
unsigned long AddObserver (unsigned long event, U observer, void(T::*callback)(), float priority=0.0f)
template<class U , class T >
unsigned long AddObserver (unsigned long event, U observer, void(T::*callback)(vtkObject *, unsigned long, void *), float priority=0.0f)
int InvokeEvent (unsigned long event, void *callData)
int InvokeEvent (const char *event, void *callData)
int InvokeEvent (unsigned long event)
int InvokeEvent (const char *event)
- Public Member Functions inherited from vtkObjectBase
const char * GetClassName () const
virtual void Delete ()
virtual void FastDelete ()
void Print (ostream &os)
void SetReferenceCount (int)
void PrintRevisions (ostream &os)
virtual void PrintHeader (ostream &os, vtkIndent indent)
virtual void PrintTrailer (ostream &os, vtkIndent indent)
int GetReferenceCount ()

Static Public Member Functions

static vtkOpenGLHAVSVolumeMapperNew ()
static int IsTypeOf (const char *type)
static vtkOpenGLHAVSVolumeMapperSafeDownCast (vtkObject *o)

Protected Member Functions

 vtkOpenGLHAVSVolumeMapper ()
 ~vtkOpenGLHAVSVolumeMapper ()
virtual int FillInputPortInformation (int port, vtkInformation *info)
virtual void Initialize (vtkRenderer *ren, vtkVolume *vol)
virtual void InitializeLookupTables (vtkVolume *vol)
void InitializeGPUDataStructures ()
void InitializeShaders ()
void DeleteShaders ()
void InitializeFramebufferObject ()
void RenderHAVS (vtkRenderer *ren)
void SetupFBOZBuffer (int screenWidth, int screenHeight, float depthNear, float depthFar, float *zbuffer)
void SetupFBOMRT ()
void DrawFBOInit (int screenWidth, int screenHeight, float depthNear, float depthFar)
void DrawFBOGeometry ()
void DrawFBOFlush (int screenWidth, int screenHeight, float depthNear, float depthFar)
void DrawBlend (int screenWidth, int screenHeight, float depthNear, float depthFar)
void CheckOpenGLError (const char *str)
- Protected Member Functions inherited from vtkHAVSVolumeMapper
 vtkHAVSVolumeMapper ()
 ~vtkHAVSVolumeMapper ()
void InitializePrimitives (vtkVolume *vol)
void InitializeScalars ()
void InitializeLevelOfDetail ()
void FRadixSort (vtkHAVSSortedFace *array, vtkHAVSSortedFace *temp, int lo, int up)
void FRadix (int byte, int len, vtkHAVSSortedFace *source, vtkHAVSSortedFace *dest, int *count)
void UpdateLevelOfDetail (float targetTime)
void PartialVisibilitySort (float *eye)
bool CheckInitializationError ()
- Protected Member Functions inherited from vtkUnstructuredGridVolumeMapper
 vtkUnstructuredGridVolumeMapper ()
 ~vtkUnstructuredGridVolumeMapper ()
- Protected Member Functions inherited from vtkAbstractVolumeMapper
 vtkAbstractVolumeMapper ()
 ~vtkAbstractVolumeMapper ()
- Protected Member Functions inherited from vtkAbstractMapper3D
 vtkAbstractMapper3D ()
 ~vtkAbstractMapper3D ()
- Protected Member Functions inherited from vtkAbstractMapper
 vtkAbstractMapper ()
 ~vtkAbstractMapper ()
- Protected Member Functions inherited from vtkAlgorithm
 vtkAlgorithm ()
 ~vtkAlgorithm ()
virtual int FillOutputPortInformation (int port, vtkInformation *info)
virtual void SetNumberOfInputPorts (int n)
virtual void SetNumberOfOutputPorts (int n)
int InputPortIndexInRange (int index, const char *action)
int OutputPortIndexInRange (int index, const char *action)
int GetInputArrayAssociation (int idx, vtkInformationVector **inputVector)
virtual vtkExecutiveCreateDefaultExecutive ()
virtual void ReportReferences (vtkGarbageCollector *)
virtual void SetNumberOfInputConnections (int port, int n)
int GetInputArrayAssociation (int idx, int connection, vtkInformationVector **inputVector)
int GetInputArrayAssociation (int idx, vtkDataObject *input)
vtkDataArrayGetInputArrayToProcess (int idx, vtkInformationVector **inputVector)
vtkDataArrayGetInputArrayToProcess (int idx, vtkInformationVector **inputVector, int &association)
vtkDataArrayGetInputArrayToProcess (int idx, int connection, vtkInformationVector **inputVector)
vtkDataArrayGetInputArrayToProcess (int idx, int connection, vtkInformationVector **inputVector, int &association)
vtkDataArrayGetInputArrayToProcess (int idx, vtkDataObject *input)
vtkDataArrayGetInputArrayToProcess (int idx, vtkDataObject *input, int &association)
vtkAbstractArrayGetInputAbstractArrayToProcess (int idx, vtkInformationVector **inputVector)
vtkAbstractArrayGetInputAbstractArrayToProcess (int idx, vtkInformationVector **inputVector, int &association)
vtkAbstractArrayGetInputAbstractArrayToProcess (int idx, int connection, vtkInformationVector **inputVector)
vtkAbstractArrayGetInputAbstractArrayToProcess (int idx, int connection, vtkInformationVector **inputVector, int &association)
vtkAbstractArrayGetInputAbstractArrayToProcess (int idx, vtkDataObject *input)
vtkAbstractArrayGetInputAbstractArrayToProcess (int idx, vtkDataObject *input, int &association)
vtkInformationGetInputArrayFieldInformation (int idx, vtkInformationVector **inputVector)
virtual void SetNthInputConnection (int port, int index, vtkAlgorithmOutput *input)
virtual void SetErrorCode (unsigned long)
- Protected Member Functions inherited from vtkObject
 vtkObject ()
virtual ~vtkObject ()
virtual void RegisterInternal (vtkObjectBase *, int check)
virtual void UnRegisterInternal (vtkObjectBase *, int check)
void InternalGrabFocus (vtkCommand *mouseEvents, vtkCommand *keypressEvents=NULL)
void InternalReleaseFocus ()
- Protected Member Functions inherited from vtkObjectBase
 vtkObjectBase ()
virtual ~vtkObjectBase ()
virtual void CollectRevisions (ostream &os)
 vtkObjectBase (const vtkObjectBase &)
void operator= (const vtkObjectBase &)

Protected Attributes

unsigned int VBOVertexName
unsigned int VBOTexCoordName
unsigned int VBOVertexIndexName
unsigned int VertexProgram
unsigned int FragmentProgramBegin
unsigned int FragmentProgram
unsigned int FragmentProgramEnd
unsigned int FramebufferObject
int FramebufferObjectSize
unsigned int FramebufferTextures [4]
unsigned int DepthTexture
unsigned int PsiTableTexture
unsigned int TransferFunctionTexture
vtkWeakPointer< vtkRenderWindowRenderWindow
- Protected Attributes inherited from vtkHAVSVolumeMapper
float * Vertices
float * Scalars
double ScalarRange [2]
unsigned int * Triangles
unsigned int * OrderedTriangles
vtkHAVSSortedFace * SortedFaces
vtkHAVSSortedFace * RadixTemp
float * Centers
unsigned int NumberOfVertices
unsigned int NumberOfCells
unsigned int NumberOfScalars
unsigned int NumberOfTriangles
unsigned int NumberOfBoundaryTriangles
unsigned int NumberOfInternalTriangles
unsigned int * BoundaryTriangles
unsigned int * InternalTriangles
unsigned int LevelOfDetailTriangleCount
float CurrentLevelOfDetail
float LevelOfDetailTargetTime
bool LevelOfDetail
int LevelOfDetailMethod
int KBufferState
float MaxEdgeLength
float LevelOfDetailMaxEdgeLength
float UnitDistance
bool GPUDataStructures
float Diagonal
bool PartiallyRemoveNonConvexities
int KBufferSize
float * TransferFunction
int TransferFunctionSize
bool Initialized
int InitializationError
int FrameNumber
float TotalRenderTime
vtkTimeStamp ColorTransferFunctionMTime
vtkTimeStamp AlphaTransferFunctionMTime
vtkTimeStamp UnstructuredGridMTime
vtkTimeStamp ScalarsMTime
vtkVolumeLastVolume
- Protected Attributes inherited from vtkUnstructuredGridVolumeMapper
int BlendMode
- Protected Attributes inherited from vtkAbstractVolumeMapper
int ScalarMode
char * ArrayName
int ArrayId
int ArrayAccessMode
- Protected Attributes inherited from vtkAbstractMapper3D
double Bounds [6]
double Center [3]
- Protected Attributes inherited from vtkAbstractMapper
vtkTimerLogTimer
double TimeToDraw
vtkWindowLastWindow
vtkPlaneCollectionClippingPlanes
- Protected Attributes inherited from vtkAlgorithm
vtkInformationInformation
double Progress
char * ProgressText
unsigned long ErrorCode
- Protected Attributes inherited from vtkObject
unsigned char Debug
vtkTimeStamp MTime
vtkSubjectHelper * SubjectHelper
- Protected Attributes inherited from vtkObjectBase
int ReferenceCount
vtkWeakPointerBase ** WeakPointers

Additional Inherited Members

- Public Attributes inherited from vtkAlgorithm
int AbortExecute
- Protected Types inherited from vtkHAVSVolumeMapper
enum  {
  NO_INIT_ERROR = 0, NON_TETRAHEDRA = 1, UNSUPPORTED_EXTENSIONS = 2, NO_SCALARS = 3,
  CELL_DATA = 4, NO_CELLS = 5
}
- Static Protected Member Functions inherited from vtkAlgorithm
static vtkInformationIntegerKeyPORT_REQUIREMENTS_FILLED ()
- Static Protected Attributes inherited from vtkAlgorithm
static vtkExecutiveDefaultExecutivePrototype
- Friends inherited from vtkObject

Detailed Description

Hardware-Assisted Visibility Sorting unstructured grid mapper, OpenGL implementation.

vtkHAVSVolumeMapper is a class that renders polygonal data (represented as an unstructured grid) using the Hardware-Assisted Visibility Sorting (HAVS) algorithm. First the unique triangles are sorted in object space, then they are sorted in image space using a fixed size A-buffer implemented on the GPU called the k-buffer. The HAVS algorithm excels at rendering large datasets quickly. The trade-off is that the algorithm may produce some rendering artifacts due to an insufficient k size (currently 2 or 6 is supported) or read/write race conditions.

A built in level-of-detail (LOD) approach samples the geometry using one of two heuristics (field or area). If LOD is enabled, the amount of geometry that is sampled and rendered changes dynamically to stay within the target frame rate. The field sampling method generally works best for datasets with cell sizes that don't vary much in size. On the contrary, the area sampling approach gives better approximations when the volume has a lot of variation in cell size.

The HAVS algorithm uses several advanced features on graphics hardware. The k-buffer sorting network is implemented using framebuffer objects (FBOs) with multiple render targets (MRTs). Therefore, only cards that support these features can run the algorithm (at least an ATI 9500 or an NVidia NV40 (6600)).

Attention
Several issues had to be addressed to get the HAVS algorithm working within the vtk framework. These additions forced the code to forsake speed for the sake of compliance and robustness.
The HAVS algorithm operates on the triangles that compose the mesh. Therefore, before rendering, the cells are decomposed into unique triangles and stored on the GPU for efficient rendering. The use of GPU data structures is only recommended if the entire geometry can fit in graphics memory. Otherwise this feature should be disabled.
Another new feature is the handling of mixed data types (eg., polygonal data with volume data). This is handled by reading the z-buffer from the current window and copying it into the framebuffer object for off-screen rendering. The depth test is then enabled so that the volume only appears over the opaque geometry. Finally, the results of the off-screen rendering are blended into the framebuffer as a transparent, view-aligned texture.
Instead of using a preintegrated 3D lookup table for storing the ray integral, this implementation uses partial pre-integration. This improves the performance of dynamic transfer function updates by avoiding a costly preprocess of the table.
A final change to the original algorithm is the handling of non-convexities in the mesh. Due to read/write hazards that may create undesired artifacts with non-convexities when using a inside/outside toggle in the fragment program, another approach was employed. To handle non-convexities, the fragment shader determines if a ray-gap is larger than the max cell size and kill the fragment if so. This approximation performs rather well in practice but may miss small non-convexities.
For more information on the HAVS algorithm see:
"Hardware-Assisted Visibility Sorting for Unstructured Volume Rendering" by S. P. Callahan, M. Ikits, J. L. D. Comba, and C. T. Silva, IEEE Transactions of Visualization and Computer Graphics; May/June 2005.
For more information on the Level-of-Detail algorithm, see:
"Interactive Rendering of Large Unstructured Grids Using Dynamic Level-of-Detail" by S. P. Callahan, J. L. D. Comba, P. Shirley, and C. T. Silva, Proceedings of IEEE Visualization '05, Oct. 2005.
Acknowledgments:
This code was developed by Steven P. Callahan under the supervision of Prof. Claudio T. Silva. The code also contains contributions from Milan Ikits, Linh Ha, Huy T. Vo, Carlos E. Scheidegger, and Joao L. D. Comba.
Acknowledgments:
The work was supported by grants, contracts, and gifts from the National Science Foundation, the Department of Energy, the Army Research Office, and IBM.
Acknowledgments:
The port of HAVS to VTK and ParaView has been primarily supported by Sandia National Labs.

Definition at line 127 of file vtkOpenGLHAVSVolumeMapper.h.

Member Typedef Documentation

Definition at line 132 of file vtkOpenGLHAVSVolumeMapper.h.

Constructor & Destructor Documentation

vtkOpenGLHAVSVolumeMapper::vtkOpenGLHAVSVolumeMapper ( )
protected
vtkOpenGLHAVSVolumeMapper::~vtkOpenGLHAVSVolumeMapper ( )
protected

Member Function Documentation

static vtkOpenGLHAVSVolumeMapper* vtkOpenGLHAVSVolumeMapper::New ( )
static

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

Reimplemented from vtkHAVSVolumeMapper.

virtual const char* vtkOpenGLHAVSVolumeMapper::GetClassName ( )
virtual

Reimplemented from vtkHAVSVolumeMapper.

static int vtkOpenGLHAVSVolumeMapper::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 vtkHAVSVolumeMapper.

virtual int vtkOpenGLHAVSVolumeMapper::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 vtkHAVSVolumeMapper.

static vtkOpenGLHAVSVolumeMapper* vtkOpenGLHAVSVolumeMapper::SafeDownCast ( vtkObject o)
static

Reimplemented from vtkHAVSVolumeMapper.

virtual void vtkOpenGLHAVSVolumeMapper::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 vtkHAVSVolumeMapper.

virtual void vtkOpenGLHAVSVolumeMapper::Render ( vtkRenderer ren,
vtkVolume vol 
)
virtual

Render the volume

Implements vtkUnstructuredGridVolumeMapper.

virtual void vtkOpenGLHAVSVolumeMapper::ReleaseGraphicsResources ( vtkWindow )
virtual

Release any graphics resources that are being consumed by this volume renderer.

Reimplemented from vtkUnstructuredGridVolumeMapper.

virtual void vtkOpenGLHAVSVolumeMapper::SetGPUDataStructures ( bool  )
virtual

Set/get whether or not the data structures should be stored on the GPU for better peformance.

Implements vtkHAVSVolumeMapper.

virtual bool vtkOpenGLHAVSVolumeMapper::SupportedByHardware ( vtkRenderer r)
virtual

Check hardware support for the HAVS algorithm. Necessary features include off-screen rendering, 32-bit fp textures, multiple render targets, and framebuffer objects. Subclasses must override this method to indicate if supported by Hardware.

virtual int vtkOpenGLHAVSVolumeMapper::FillInputPortInformation ( int  port,
vtkInformation info 
)
protectedvirtual

Fill the input port information objects for this algorithm. This is invoked by the first call to GetInputPortInformation for each port so subclasses can specify what they can handle.

Reimplemented from vtkUnstructuredGridVolumeMapper.

virtual void vtkOpenGLHAVSVolumeMapper::Initialize ( vtkRenderer ren,
vtkVolume vol 
)
protectedvirtual

Implements vtkHAVSVolumeMapper.

virtual void vtkOpenGLHAVSVolumeMapper::InitializeLookupTables ( vtkVolume vol)
protectedvirtual

Reimplemented from vtkHAVSVolumeMapper.

void vtkOpenGLHAVSVolumeMapper::InitializeGPUDataStructures ( )
protected
void vtkOpenGLHAVSVolumeMapper::InitializeShaders ( )
protected
void vtkOpenGLHAVSVolumeMapper::DeleteShaders ( )
protected
void vtkOpenGLHAVSVolumeMapper::InitializeFramebufferObject ( )
protected
void vtkOpenGLHAVSVolumeMapper::RenderHAVS ( vtkRenderer ren)
protected
void vtkOpenGLHAVSVolumeMapper::SetupFBOZBuffer ( int  screenWidth,
int  screenHeight,
float  depthNear,
float  depthFar,
float *  zbuffer 
)
protected
void vtkOpenGLHAVSVolumeMapper::SetupFBOMRT ( )
protected
void vtkOpenGLHAVSVolumeMapper::DrawFBOInit ( int  screenWidth,
int  screenHeight,
float  depthNear,
float  depthFar 
)
protected
void vtkOpenGLHAVSVolumeMapper::DrawFBOGeometry ( )
protected
void vtkOpenGLHAVSVolumeMapper::DrawFBOFlush ( int  screenWidth,
int  screenHeight,
float  depthNear,
float  depthFar 
)
protected
void vtkOpenGLHAVSVolumeMapper::DrawBlend ( int  screenWidth,
int  screenHeight,
float  depthNear,
float  depthFar 
)
protected
void vtkOpenGLHAVSVolumeMapper::CheckOpenGLError ( const char *  str)
protected

Member Data Documentation

unsigned int vtkOpenGLHAVSVolumeMapper::VBOVertexName
protected

Definition at line 179 of file vtkOpenGLHAVSVolumeMapper.h.

unsigned int vtkOpenGLHAVSVolumeMapper::VBOTexCoordName
protected

Definition at line 180 of file vtkOpenGLHAVSVolumeMapper.h.

unsigned int vtkOpenGLHAVSVolumeMapper::VBOVertexIndexName
protected

Definition at line 181 of file vtkOpenGLHAVSVolumeMapper.h.

unsigned int vtkOpenGLHAVSVolumeMapper::VertexProgram
protected

Definition at line 182 of file vtkOpenGLHAVSVolumeMapper.h.

unsigned int vtkOpenGLHAVSVolumeMapper::FragmentProgramBegin
protected

Definition at line 183 of file vtkOpenGLHAVSVolumeMapper.h.

unsigned int vtkOpenGLHAVSVolumeMapper::FragmentProgram
protected

Definition at line 184 of file vtkOpenGLHAVSVolumeMapper.h.

unsigned int vtkOpenGLHAVSVolumeMapper::FragmentProgramEnd
protected

Definition at line 185 of file vtkOpenGLHAVSVolumeMapper.h.

unsigned int vtkOpenGLHAVSVolumeMapper::FramebufferObject
protected

Definition at line 186 of file vtkOpenGLHAVSVolumeMapper.h.

int vtkOpenGLHAVSVolumeMapper::FramebufferObjectSize
protected

Definition at line 187 of file vtkOpenGLHAVSVolumeMapper.h.

unsigned int vtkOpenGLHAVSVolumeMapper::FramebufferTextures[4]
protected

Definition at line 188 of file vtkOpenGLHAVSVolumeMapper.h.

unsigned int vtkOpenGLHAVSVolumeMapper::DepthTexture
protected

Definition at line 189 of file vtkOpenGLHAVSVolumeMapper.h.

unsigned int vtkOpenGLHAVSVolumeMapper::PsiTableTexture
protected

Definition at line 192 of file vtkOpenGLHAVSVolumeMapper.h.

unsigned int vtkOpenGLHAVSVolumeMapper::TransferFunctionTexture
protected

Definition at line 193 of file vtkOpenGLHAVSVolumeMapper.h.

vtkWeakPointer<vtkRenderWindow> vtkOpenGLHAVSVolumeMapper::RenderWindow
protected

Definition at line 195 of file vtkOpenGLHAVSVolumeMapper.h.


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