Base implementation of a texture swapchain.

Inheritance diagram for makVrv::DtSwapChain:

Public Member Functions
	DtSwapChain (DtDe &de, vrvVirtualReality::DtEye eye)

virtual	~DtSwapChain ()

virtual bool	initalise (unsigned int width, unsigned int height, unsigned int layers, DtSwapChainTextureType type, DtGlImageType format)

virtual bool	addFormat (DtSwapChainTextureType type, DtGlImageType format)

virtual void	acquireTextures ()=0

unsigned int	getAcquiredIndex (DtSwapChainTextureType type) const

virtual unsigned int	getTexture (DtSwapChainTextureType type, int index) const =0

virtual void	releaseTextures ()=0

bool	isInitialized () const

unsigned int	length () const

DtSwapChainTextureType	type (unsigned int index) const

DtGlImageType	format (unsigned int index) const

DtGlImageType	format (DtSwapChainTextureType type) const

unsigned int	width () const

unsigned int	height () const

unsigned int	layers () const

vrvVirtualReality::DtEye	eye () const

GLuint	getFbo (unsigned int index) const

virtual void	copyTextures (osg::RenderInfo &renderInfo, unsigned int srcColorId, unsigned int srcDepthId, unsigned int srcStencilId, bool copySrcAlpha=false, bool srcIsArray=true, int mode=0) const

virtual void	blitTextureToScreen (int swidth, int sheight, bool showleftEye, int overrideIndex=-1)

virtual void	blendSwapChains (osg::RenderInfo &renderInfo, DtSwapChain base, DtSwapChain overlay) const

Protected Member Functions
virtual bool	initaliseFbos () const

virtual bool	initCopyProgram (bool copyDepth, bool copyStencil, bool copySrcAlpha, bool srcIsArray) const

virtual bool	initBlendProgram () const

Protected Attributes
bool	myIsInitialized

vrvVirtualReality::DtEye	myEye

unsigned int	myLength

std::vector < DtSwapChainTextureType >	myTextureTypes

std::vector< DtGlImageType >	myFormats

unsigned int	myWidth

unsigned int	myHeight

unsigned int	myLayers

std::map < DtSwapChainTextureType, unsigned int >	mySwapChainIndexes

std::vector< GLuint >	myFbos

DtGlProgram *	myCopyProgram

int	myLastCopyProgramConfig

osg::ref_ptr< osg::StateSet >	myCopyStateSet

unsigned int	myCopyQuadVbo

unsigned int	myLastStencilTexId

unsigned int	mySrcStencilTexId

DtGlProgram *	myBlendProgram

DtDe &	myDe

Private Member Functions
	DtSwapChain ()

	DtSwapChain (const DtSwapChain &orig)

DtSwapChain &	operator= (const DtSwapChain &)

Constructor & Destructor Documentation

makVrv::DtSwapChain::DtSwapChain ( )

private

prevent default constructor

makVrv::DtSwapChain::DtSwapChain ( const DtSwapChain & orig )

private

prevent copy construction

makVrv::DtSwapChain::DtSwapChain	(	DtDe &	de,
		vrvVirtualReality::DtEye	eye
	)

CTOR takes the post processor, eye to submit for and the VR driver.

virtual makVrv::DtSwapChain::~DtSwapChain ( )

virtual

DTOR.

Member Function Documentation

DtSwapChain& makVrv::DtSwapChain::operator= ( const DtSwapChain & )

private

prevent assignment

virtual bool makVrv::DtSwapChain::initalise	(	unsigned int	width,
		unsigned int	height,
		unsigned int	layers,
		DtSwapChainTextureType	type,
		DtGlImageType	format
	)

virtual

create our swap chain with the requested format, deleting any existing one

Reimplemented in makVrv::DtVarjoSwapChain, makVrv::DtOculusSwapChain, makVrv::DtOpenVRSwapChain, and makVrv::DtXtalSwapChain.

virtual bool makVrv::DtSwapChain::addFormat	(	DtSwapChainTextureType	type,
		DtGlImageType	format
	)

virtual

add a swap chain of the specified format, initalise needs to have been called first to set dimensions

Reimplemented in makVrv::DtVarjoSwapChain, makVrv::DtOculusSwapChain, makVrv::DtOpenVRSwapChain, and makVrv::DtXtalSwapChain.

virtual void makVrv::DtSwapChain::acquireTextures ( )

pure virtual

acquire the textures from the swap chain for this frame, storing the index in mySwapChainIndexes

Implemented in makVrv::DtVarjoSwapChain, makVrv::DtOculusSwapChain, makVrv::DtOpenVRSwapChain, and makVrv::DtXtalSwapChain.

unsigned int makVrv::DtSwapChain::getAcquiredIndex ( DtSwapChainTextureType type ) const

use basic texture type to get acquired index

virtual unsigned int makVrv::DtSwapChain::getTexture	(	DtSwapChainTextureType	type,
		int	index
	)		const

pure virtual

return the GL texture id of the color swapchain texture at index, pass -1 for currently aquired

Implemented in makVrv::DtVarjoSwapChain, makVrv::DtOculusSwapChain, makVrv::DtOpenVRSwapChain, and makVrv::DtXtalSwapChain.

virtual void makVrv::DtSwapChain::releaseTextures ( )

pure virtual

release the current swapchain texture

Implemented in makVrv::DtVarjoSwapChain, makVrv::DtOculusSwapChain, makVrv::DtOpenVRSwapChain, and makVrv::DtXtalSwapChain.

bool makVrv::DtSwapChain::isInitialized ( ) const

has the swapchainb initalised properly

unsigned int makVrv::DtSwapChain::length ( ) const

length of the swapchain/number of textures

DtSwapChainTextureType makVrv::DtSwapChain::type ( unsigned int index ) const

format of the swapchain textures

DtGlImageType makVrv::DtSwapChain::format ( unsigned int index ) const

format of the swapchain textures

DtGlImageType makVrv::DtSwapChain::format ( DtSwapChainTextureType type ) const

returns the format used by the texture type

unsigned int makVrv::DtSwapChain::width ( ) const

width of the swapchain textures

unsigned int makVrv::DtSwapChain::height ( ) const

height of the swapchain textures

unsigned int makVrv::DtSwapChain::layers ( ) const

layers/depth of the swapchain textures

vrvVirtualReality::DtEye makVrv::DtSwapChain::eye ( ) const

return the eye this swapchain is handling

GLuint makVrv::DtSwapChain::getFbo ( unsigned int index ) const

return fbo for the swap chain texture at index

virtual void makVrv::DtSwapChain::copyTextures	(	osg::RenderInfo &	renderInfo,
		unsigned int	srcColorId,
		unsigned int	srcDepthId,
		unsigned int	srcStencilId,
		bool	copySrcAlpha = `false`,
		bool	srcIsArray = `true`,
		int	mode = `0`
	)		const

virtual

copy the color texture to the color swapchain using the stencil as the source for alpha

virtual void makVrv::DtSwapChain::blitTextureToScreen	(	int	swidth,
		int	sheight,
		bool	showleftEye,
		int	overrideIndex = `-1`
	)

virtual

blit the currently aquired texture to the default framebuffer, it's recommended you call this before aquiring a new textur essentially it's best to blit the last frames texture

Reimplemented in makVrv::DtOculusSwapChain.

virtual void makVrv::DtSwapChain::blendSwapChains	(	osg::RenderInfo &	renderInfo,
		DtSwapChain *	base,
		DtSwapChain *	overlay
	)		const

virtual

blend two swapchains into this one

virtual bool makVrv::DtSwapChain::initaliseFbos ( ) const

protectedvirtual

initalise the FBOs using the available swapchain types. An FBO will be created for each texture in the swapchain. If there are color and depth swap chains the swapchain will also bind the depth texture to the fbos

virtual bool makVrv::DtSwapChain::initCopyProgram	(	bool	copyDepth,
		bool	copyStencil,
		bool	copySrcAlpha,
		bool	srcIsArray
	)		const

protectedvirtual

compile copy shader program

virtual bool makVrv::DtSwapChain::initBlendProgram ( ) const

protectedvirtual

compile the blend shader program

Member Data Documentation

bool makVrv::DtSwapChain::myIsInitialized

protected

vrvVirtualReality::DtEye makVrv::DtSwapChain::myEye

protected

unsigned int makVrv::DtSwapChain::myLength

mutableprotected

the length/number of textures in the swapchain

std::vector<DtSwapChainTextureType> makVrv::DtSwapChain::myTextureTypes

protected

the type of the texture swap chain

std::vector<DtGlImageType> makVrv::DtSwapChain::myFormats

protected

the format of the texture swap chain

unsigned int makVrv::DtSwapChain::myWidth

mutableprotected

the pixel width of the texture swap chain

unsigned int makVrv::DtSwapChain::myHeight

mutableprotected

the pixel height of the texture swap chain

unsigned int makVrv::DtSwapChain::myLayers

mutableprotected

the number of layers in the textures i.e. array layers

std::map<DtSwapChainTextureType, unsigned int> makVrv::DtSwapChain::mySwapChainIndexes

mutableprotected

active swapchain index for each format

std::vector<GLuint> makVrv::DtSwapChain::myFbos

mutableprotected

fbo for swapchain copy operations

DtGlProgram* makVrv::DtSwapChain::myCopyProgram

mutableprotected

shader to copy sources texture into swapchain

int makVrv::DtSwapChain::myLastCopyProgramConfig

mutableprotected

the bit mask for the last complied version of the copy program

osg::ref_ptr<osg::StateSet> makVrv::DtSwapChain::myCopyStateSet

mutableprotected

state set to encapsulate state changes when doing swapchain fill

unsigned int makVrv::DtSwapChain::myCopyQuadVbo

mutableprotected

vbo for draw command used for swapchain fill

unsigned int makVrv::DtSwapChain::myLastStencilTexId

mutableprotected

the current source depth texture id, tracked so we can recreate stencil view if it changes

unsigned int makVrv::DtSwapChain::mySrcStencilTexId

mutableprotected

the current depth textures stencil view texture id

DtGlProgram* makVrv::DtSwapChain::myBlendProgram

mutableprotected

shader to blend two swapchains into one (scene and overlay)

DtDe& makVrv::DtSwapChain::myDe

protected

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

/data/exports/nrhent7-1/nightly/docs/vrForces.vrf5-2-branch/include/vrvVirtualReality/DtSwapChain.h

Public Member Functions

Protected Member Functions

Protected Attributes

Private Member Functions

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation