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.

Inheritance diagram for makVrv::DtVariableRateShadingImage:

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

Public Member Functions
	DtVariableRateShadingImage (DtDe &de, DtOsgChannel *channel)

void	initGLObjects (osg::State &state)

bool	createShadingRateImageTextureForChannel (osg::State &state)

unsigned int	imageWidth () const

unsigned int	imageHeight () const

unsigned int	shadingRateTexelWidth () const

unsigned int	shadingRateTexelHeight () const

void	useImageData (bool useData)

void	dirtyImageData ()

std::vector < VariableRatePixelBuffer > &	imageData ()

DtGlRenderTexture *	texture ()

void	bindShadingImage (osg::State &state)

bool	isInitalised ()

void	reset ()

Static Public Member Functions
static void	populateDataForvated (int width, int height, float centerX, float centerY, VariableRatePixelBuffer &data)

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

Protected Member Functions
virtual	~DtVariableRateShadingImage ()

void	loadImageData (osg::State &state)

Protected Attributes
DtDe &	myDe

DtOsgChannel *	myChannel

VariableRateShadingExtensions *	myExt

bool	myIsInitalised

DtGlRenderTexture *	myShadingRateTexture

GLint	myShadingRateImageTexelWidth

GLint	myShadingRateImageTexelHeight

std::vector < VariableRatePixelBuffer >	myShadingRateImageData

bool	myUseImageData

bool	myShadingRateTextureIsDirty

Private Member Functions
	DtVariableRateShadingImage (const DtVariableRateShadingImage &other)

DtVariableRateShadingImage &	operator= (const DtVariableRateShadingImage &other)

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

bool 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

void makVrv::DtVariableRateShadingImage::reset ( void )

inline

reset the initalised state so the image is rebuilt

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

bool makVrv::DtVariableRateShadingImage::myIsInitalised

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.vrf5-1-branch/include/vrvOsg/DtVariableRateShadingImage.h

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Private Member Functions

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation