Ogre::GLDepthBufferCommon Class Reference

OpenGL supports 3 different methods: FBO, pbuffer & Copy. More...

#include <OgreGLDepthBufferCommon.h>

Inheritance diagram for Ogre::GLDepthBufferCommon:

Public Member Functions
	GLDepthBufferCommon (uint16 poolId, GLRenderSystemCommon *renderSystem, GLContext *creatorContext, GLHardwarePixelBufferCommon *depth, GLHardwarePixelBufferCommon *stencil, const RenderTarget *target, bool isManual)
virtual	~GLDepthBufferCommon ()
GLHardwarePixelBufferCommon *	getDepthBuffer () const
GLContext *	getGLContext () const
GLHardwarePixelBufferCommon *	getStencilBuffer () const
bool	isCompatible (RenderTarget *renderTarget) const override
	Returns whether the specified RenderTarget is compatible with this DepthBuffer That is, this DepthBuffer can be attached to that RenderTarget. More...
Public Member Functions inherited from Ogre::DepthBuffer
	DepthBuffer (uint16 poolId, uint32 width, uint32 height, uint32 fsaa, bool manual)
virtual	~DepthBuffer ()
virtual void	_notifyRenderTargetAttached (RenderTarget *renderTarget)
	Called when a RenderTarget is attaches this DepthBuffer. More...
virtual void	_notifyRenderTargetDetached (RenderTarget *renderTarget)
	Called when a RenderTarget is detaches from this DepthBuffer. More...
void	_setPoolId (uint16 poolId)
	Sets the pool id in which this DepthBuffer lives. More...
uint32	getFSAA () const
virtual uint32	getHeight () const
virtual uint16	getPoolId () const
	Gets the pool id in which this DepthBuffer lives. More...
virtual uint32	getWidth () const
bool	isManual () const
	Manual DepthBuffers are cleared in RenderSystem's destructor. More...

Additional Inherited Members
Public Types inherited from Ogre::DepthBuffer
enum	PoolId { POOL_NO_DEPTH = 0 , POOL_MANUAL_USAGE = 0 , POOL_DEFAULT = 1 }

Detailed Description

OpenGL supports 3 different methods: FBO, pbuffer & Copy.

Each one has it's own limitations. Non-FBO methods are solved using "dummy" DepthBuffers. That is, a DepthBuffer pointer is attached to the RenderTarget (for the sake of consistency) but it doesn't actually contain a Depth surface/renderbuffer (mDepthBuffer & mStencilBuffer are null pointers all the time) Those dummy DepthBuffers are identified thanks to their GL context. Note that FBOs don't allow sharing with the main window's depth buffer. Therefore even when FBO is enabled, a dummy DepthBuffer is still used to manage the windows.

Constructor & Destructor Documentation

GLDepthBufferCommon()

Ogre::GLDepthBufferCommon::GLDepthBufferCommon	(	uint16	poolId,
		GLRenderSystemCommon *	renderSystem,
		GLContext *	creatorContext,
		GLHardwarePixelBufferCommon *	depth,
		GLHardwarePixelBufferCommon *	stencil,
		const RenderTarget *	target,
		bool	isManual
	)

~GLDepthBufferCommon()

virtual Ogre::GLDepthBufferCommon::~GLDepthBufferCommon ( )

virtual

Member Function Documentation

isCompatible()

bool Ogre::GLDepthBufferCommon::isCompatible ( RenderTarget *  renderTarget ) const

overridevirtual

Returns whether the specified RenderTarget is compatible with this DepthBuffer That is, this DepthBuffer can be attached to that RenderTarget.

Remarks

Most APIs impose the following restrictions: Width & height must be equal or higher than the render target's They must be of the same bit depth. They need to have the same FSAA setting

Parameters

renderTarget

The render target to test against

Reimplemented from Ogre::DepthBuffer.

getGLContext()

GLContext* Ogre::GLDepthBufferCommon::getGLContext ( ) const

inline

getDepthBuffer()

GLHardwarePixelBufferCommon* Ogre::GLDepthBufferCommon::getDepthBuffer ( ) const

inline

getStencilBuffer()

GLHardwarePixelBufferCommon* Ogre::GLDepthBufferCommon::getStencilBuffer ( ) const

inline

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

• OgreGLDepthBufferCommon.h