CPU controler for limit surface evaluation. More...

#include <cpuEvalLimitController.h>

Classes
struct	FacevaryingData

struct	FacevaryingData

struct	VaryingData

struct	VaryingData

struct	VertexData

struct	VertexData

Public Member Functions
	CpuEvalLimitController ()
	Constructor. More...

	~CpuEvalLimitController ()
	Destructor. More...

template<class INPUT_BUFFER , class OUTPUT_BUFFER >
void	BindVertexBuffers (VertexBufferDescriptor const &iDesc, INPUT_BUFFER inQ, VertexBufferDescriptor const &oDesc, OUTPUT_BUFFER outQ, OUTPUT_BUFFER outdQu=0, OUTPUT_BUFFER outdQv=0)
	Binds control vertex data buffer. More...

template<class INPUT_BUFFER , class OUTPUT_BUFFER >
void	BindVaryingBuffers (VertexBufferDescriptor const &iDesc, INPUT_BUFFER inQ, VertexBufferDescriptor const &oDesc, OUTPUT_BUFFER outQ)
	Binds the varying-interpolated data streams. More...

template<class OUTPUT_BUFFER >
void	BindFacevaryingBuffers (VertexBufferDescriptor const &iDesc, VertexBufferDescriptor const &oDesc, OUTPUT_BUFFER *outQ)
	Binds the face-varying-interpolated data streams. More...

int	EvalLimitSample (EvalCoords const &coord, CpuEvalLimitContext context, VertexBufferDescriptor const &outDesc, float outQ, float outDQU, float outDQV) const
	Vertex interpolation of a single sample at the limit. More...

int	EvalLimitSample (EvalCoords const &coords, CpuEvalLimitContext *context, unsigned int index) const
	Vertex interpolation of samples at the limit. More...

void	Unbind ()

Detailed Description

CPU controler for limit surface evaluation.

A CPU-driven controller that can be called to evaluate samples on the limit surface for a given EvalContext.

Warning : this eval controller is re-entrant but it breaks the Osd API pattern by requiring client code to bind and unbind the data buffers to the Controller before calling evaluation methods.

Ex :

evalCtroller->BindVertexBuffers( ... );
evalCtroller->BindVaryingBuffers( ... );
evalCtroller->BindFacevaryingBuffers( ... );
parallel_for( int index=0; i<nsamples; ++index ) {
   evalCtroller->EvalLimitSample( coord, evalCtxt, index );
}
evalCtroller->Unbind();

Definition at line 60 of file cpuEvalLimitController.h.

Constructor & Destructor Documentation

CpuEvalLimitController ( )

Constructor.

~CpuEvalLimitController ( )

Destructor.

Member Function Documentation

void BindFacevaryingBuffers	(	VertexBufferDescriptor const &	iDesc,
		VertexBufferDescriptor const &	oDesc,
		OUTPUT_BUFFER *	outQ
	)

inline

Binds the face-varying-interpolated data streams.

Note : currently we only support bilinear boundary interpolation rules for face-varying data. Although Hbr supports 3 addition smooth rule sets, the feature-adaptive patch interpolation code currently does not support them, and neither does this EvalContext

Parameters

iDesc	data descriptor shared by all input data buffers
oDesc	data descriptor shared by all output data buffers
outQ	output face-varying data

Definition at line 131 of file cpuEvalLimitController.h.

void BindVaryingBuffers	(	VertexBufferDescriptor const &	iDesc,
		INPUT_BUFFER *	inQ,
		VertexBufferDescriptor const &	oDesc,
		OUTPUT_BUFFER *	outQ
	)

inline

Binds the varying-interpolated data streams.

Parameters

iDesc	data descriptor shared by all input data buffers
inQ	input varying data
oDesc	data descriptor shared by all output data buffers
outQ	output varying data

Definition at line 108 of file cpuEvalLimitController.h.

void BindVertexBuffers	(	VertexBufferDescriptor const &	iDesc,
		INPUT_BUFFER *	inQ,
		VertexBufferDescriptor const &	oDesc,
		OUTPUT_BUFFER *	outQ,
		OUTPUT_BUFFER *	outdQu = `0`,
		OUTPUT_BUFFER *	outdQv = `0`
	)

inline

Binds control vertex data buffer.

Parameters

iDesc	data descriptor shared by all input data buffers
inQ	input vertex data
oDesc	data descriptor shared by all output data buffers
outQ	output vertex data
outdQu	output derivative along "u" of the vertex data (optional)
outdQv	output derivative along "v" of the vertex data (optional)

Definition at line 84 of file cpuEvalLimitController.h.

int EvalLimitSample	(	EvalCoords const &	coord,
		CpuEvalLimitContext *	context,
		VertexBufferDescriptor const &	outDesc,
		float *	outQ,
		float *	outDQU,
		float *	outDQV
	)		const

Vertex interpolation of a single sample at the limit.

Evaluates "vertex" interpolation of a single sample on the surface limit.

This function is re-entrant but does not require binding the output vertex buffers. Pointers to memory where the data is output are explicitly passed to the function.

Parameters

coord	location on the limit surface to be evaluated
context	the EvalLimitContext that the controller will evaluate
outDesc	data descriptor (offset, length, stride)
outQ	output vertex data
outDQU	output derivative along "u" of the vertex data (optional)
outDQV	output derivative along "v" of the vertex data (optional)

Returns: 1 if the sample was found

int EvalLimitSample	(	EvalCoords const &	coords,
		CpuEvalLimitContext *	context,
		unsigned int	index
	)		const

inline

Vertex interpolation of samples at the limit.

Evaluates "vertex" interpolation of a sample on the surface limit.

Parameters

coords	location on the limit surface to be evaluated
context	the EvalLimitContext that the controller will evaluate
index	the index of the vertex in the output buffers bound to the context

Returns: the number of samples found (0 if the location was tagged as a hole or the coordinate was invalid)

Definition at line 182 of file cpuEvalLimitController.h.

void Unbind ( )

inline

Definition at line 193 of file cpuEvalLimitController.h.

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

opensubdiv/osd/cpuEvalLimitController.h

Classes

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation