Implements hardware occlusion queries on the GPU. More...

#include <occlusionquery.hpp>

Public Member Functions
	OcclusionQuery (OEngine::Render::OgreRenderer , Ogre::SceneNode sunNode)
	~OcclusionQuery ()
bool	supported ()
void	setActive (bool active)
void	update (float duration)
float	getSunVisibility () const
void	setSunNode (Ogre::SceneNode *node)
Protected Member Functions
virtual void	notifyRenderSingleObject (Ogre::Renderable rend, const Ogre::Pass pass, const Ogre::AutoParamDataSource source, const Ogre::LightList pLightList, bool suppressRenderStateChanges)
virtual void	renderQueueEnded (Ogre::uint8 queueGroupId, const Ogre::String &invocation, bool &repeatThisInvocation)
Private Attributes
Ogre::HardwareOcclusionQuery *	mSunTotalAreaQuery
Ogre::HardwareOcclusionQuery *	mSunVisibleAreaQuery
Ogre::HardwareOcclusionQuery *	mActiveQuery
Ogre::Entity *	mBBQueryVisible
Ogre::Entity *	mBBQueryTotal
Ogre::SceneNode *	mSunNode
Ogre::SceneNode *	mBBNodeReal
float	mSunVisibility
bool	mWasVisible
bool	mActive
bool	mFirstFrame
bool	mSupported
bool	mDoQuery
OEngine::Render::OgreRenderer *	mRendering

Detailed Description

Implements hardware occlusion queries on the GPU.

Constructor & Destructor Documentation

OcclusionQuery::OcclusionQuery	(	OEngine::Render::OgreRenderer *	,
		Ogre::SceneNode *	sunNode
	)

OcclusionQuery::~OcclusionQuery ( )

Member Function Documentation

float MWRender::OcclusionQuery::getSunVisibility ( ) const [inline]

void OcclusionQuery::notifyRenderSingleObject	(	Ogre::Renderable *	rend,
		const Ogre::Pass *	pass,
		const Ogre::AutoParamDataSource *	source,
		const Ogre::LightList *	pLightList,
		bool	suppressRenderStateChanges
	)		`[protected, virtual]`

void OcclusionQuery::renderQueueEnded	(	Ogre::uint8	queueGroupId,
		const Ogre::String &	invocation,
		bool &	repeatThisInvocation
	)		`[protected, virtual]`

for every beginOcclusionQuery(), we want a respective pullOcclusionQuery() and vice versa this also means that results can be wrong at other places if we pull, but beginOcclusionQuery() was never called this can happen for example if the object that is tested is outside of the view frustum to prevent this, check if the queries have been performed after everything has been rendered and if not, start them manually

void MWRender::OcclusionQuery::setActive ( bool active ) [inline]

make sure to disable occlusion queries before updating unrelated render targets

Parameters:

active

void OcclusionQuery::setSunNode ( Ogre::SceneNode * node )