makVrv::DtVariableRateShadingImage Class Reference

Wrapper around Nvidia Variable Rate Shading Image functionality Creates a texture of the correct size for the provided channel. More...

Inheritance diagram for makVrv::DtVariableRateShadingImage:

Public Types
typedef std::vector< unsigned char >	VariableRatePixelBuffer

Public Member Functions
	DtVariableRateShadingImage (DtDe &de, DtOsgChannel *channel)
	CTOR. More...
void	initGLObjects (osg::State &state)
	initalise the gl extensions, get the image texel sizes and calculate the image size More...
void	createShadingRateImageTextureForChannel (osg::State &state)
	create the shading rate image texture with correct dimensions for it's rendertexture accounting for texel sizes More...
unsigned int	imageWidth () const
	return the texel width of the shading rate texture More...
unsigned int	imageHeight () const
	return the texel height of the shading rate texture More...
unsigned int	shadingRateTexelWidth () const
	return the shading rate texel width (number of pixels each texel covers) More...
unsigned int	shadingRateTexelHeight () const
	return the shading rate texel height (number of pixels each texel covers) More...
void	useImageData (bool useData)
	should we use the image data array to populate the texture More...
void	dirtyImageData ()
	flag the image data is dirty so it gets loaded on next bind call More...
std::vector < VariableRatePixelBuffer > &	imageData ()
	return the data used to populate the shading rate texture More...
DtGlRenderTexture *	texture ()
	/brief return the texture used as the shading rate image More...
void	bindShadingImage (osg::State &state)
	bind the shading rate texture More...
bool	isInitalised ()
	has initGLObject been called and succeeded More...

Static Public Member Functions
static void	populateDataForvated (int width, int height, float centerX, float centerY, VariableRatePixelBuffer &data)
	convienince method to create forvated image data, centerX/Y are in normalise coords 0,0 at bottom left More...
static void	populateDataFocusRect (int width, int height, float focusMinX, float focusMinY, float focusMaxX, float focusMaxY, unsigned char focusVal, unsigned char contextVal, VariableRatePixelBuffer &data)
	convienince method to create focus rect image data, min/max x/y are in normalise coords 0,0 at bottom left. More...

Protected Member Functions
virtual	~DtVariableRateShadingImage ()
	DTOR. More...
void	loadImageData (osg::State &state)
	load the image data into the texture More...

Protected Attributes
DtDe &	myDe
DtOsgChannel *	myChannel
VariableRateShadingExtensions *	myExt
DtGlRenderTexture *	myShadingRateTexture
GLint	myShadingRateImageTexelWidth
GLint	myShadingRateImageTexelHeight
std::vector < VariableRatePixelBuffer >	myShadingRateImageData
bool	myUseImageData
bool	myShadingRateTextureIsDirty

Private Member Functions
	DtVariableRateShadingImage (const DtVariableRateShadingImage &other)
	Copy Constructor not implemented – Copy Not Allowed. More...
DtVariableRateShadingImage &	operator= (const DtVariableRateShadingImage &other)
	Assignment Operator Not implemented – Assignment Not Allowed. More...

Detailed Description

Wrapper around Nvidia Variable Rate Shading Image functionality Creates a texture of the correct size for the provided channel.

The texture factors in the shading rate Texel size (typically 16x16). The shading rate image format is R8UI it's texel values are used as lookups in the the currently bound shading rate image palette

Member Typedef Documentation

typedef std::vector<unsigned char> makVrv::DtVariableRateShadingImage::VariableRatePixelBuffer

Constructor & Destructor Documentation

makVrv::DtVariableRateShadingImage::DtVariableRateShadingImage ( const DtVariableRateShadingImage &  other )

private

Copy Constructor not implemented – Copy Not Allowed.

makVrv::DtVariableRateShadingImage::DtVariableRateShadingImage	(	DtDe &	de,
		DtOsgChannel *	channel
	)

CTOR.

virtual makVrv::DtVariableRateShadingImage::~DtVariableRateShadingImage ( )

protectedvirtual

DTOR.

Member Function Documentation

DtVariableRateShadingImage& makVrv::DtVariableRateShadingImage::operator= ( const DtVariableRateShadingImage &  other )

private

Assignment Operator Not implemented – Assignment Not Allowed.

void makVrv::DtVariableRateShadingImage::initGLObjects

(

osg::State &

state

)

initalise the gl extensions, get the image texel sizes and calculate the image size

void makVrv::DtVariableRateShadingImage::createShadingRateImageTextureForChannel

(

osg::State &

state

)

create the shading rate image texture with correct dimensions for it's rendertexture accounting for texel sizes

unsigned int makVrv::DtVariableRateShadingImage::imageWidth

(

)

const

return the texel width of the shading rate texture

unsigned int makVrv::DtVariableRateShadingImage::imageHeight

(

)

const

return the texel height of the shading rate texture

unsigned int makVrv::DtVariableRateShadingImage::shadingRateTexelWidth

(

)

const

return the shading rate texel width (number of pixels each texel covers)

unsigned int makVrv::DtVariableRateShadingImage::shadingRateTexelHeight

(

)

const

return the shading rate texel height (number of pixels each texel covers)

void makVrv::DtVariableRateShadingImage::useImageData

(

bool

useData

)

should we use the image data array to populate the texture

void makVrv::DtVariableRateShadingImage::dirtyImageData

(

)

flag the image data is dirty so it gets loaded on next bind call

std::vector<VariableRatePixelBuffer>& makVrv::DtVariableRateShadingImage::imageData

(

)

return the data used to populate the shading rate texture

DtGlRenderTexture* makVrv::DtVariableRateShadingImage::texture

(

)

/brief return the texture used as the shading rate image

void makVrv::DtVariableRateShadingImage::bindShadingImage

(

osg::State &

state

)

bind the shading rate texture

bool makVrv::DtVariableRateShadingImage::isInitalised ( )

inline

has initGLObject been called and succeeded

static void makVrv::DtVariableRateShadingImage::populateDataForvated ( int  width, int  height, float  centerX, float  centerY, VariableRatePixelBuffer &  data  )

static

convienince method to create forvated image data, centerX/Y are in normalise coords 0,0 at bottom left

static void makVrv::DtVariableRateShadingImage::populateDataFocusRect ( int  width, int  height, float  focusMinX, float  focusMinY, float  focusMaxX, float  focusMaxY, unsigned char  focusVal, unsigned char  contextVal, VariableRatePixelBuffer &  data  )

static

convienince method to create focus rect image data, min/max x/y are in normalise coords 0,0 at bottom left.

void makVrv::DtVariableRateShadingImage::loadImageData ( osg::State &  state )

protected

load the image data into the texture

Member Data Documentation

DtDe& makVrv::DtVariableRateShadingImage::myDe

protected

DtOsgChannel* makVrv::DtVariableRateShadingImage::myChannel

protected

VariableRateShadingExtensions* makVrv::DtVariableRateShadingImage::myExt

protected

DtGlRenderTexture* makVrv::DtVariableRateShadingImage::myShadingRateTexture

protected

GLint makVrv::DtVariableRateShadingImage::myShadingRateImageTexelWidth

protected

GLint makVrv::DtVariableRateShadingImage::myShadingRateImageTexelHeight

protected

std::vector<VariableRatePixelBuffer> makVrv::DtVariableRateShadingImage::myShadingRateImageData

protected

bool makVrv::DtVariableRateShadingImage::myUseImageData

protected

bool makVrv::DtVariableRateShadingImage::myShadingRateTextureIsDirty

protected

---

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

• /data/exports/nrhent7-1/nightly/docs/vrForces.vrf4-10-branch/include/vrvOsg/DtVariableRateShadingImage.h