PostProcessing Class Reference

Public Member Functions
int	numProcessors () const
	Number of post processors.
int	setupScene (int _viewerID, int _width, int _height, int _samples=0, int _stereoEye=-1)
	Bind fbo for scene rendering. More...
void	postProcess (int _viewerID, ACG::GLState *_glstate, const ACG::GLMatrixd &_modelview, const ACG::GLMatrixd &_proj1, const ACG::GLMatrixd &_proj2, bool _hwOpenGLStereo=false)
	Perform all post processing. More...
void	resolveStereoAnyglyph (int _viewerID)
	Resolve stereo buffers as anaglyph. More...

Private Member Functions
void	setupFBO (ACG::FBO *_dst, int _width, int _height, GLuint _intfmt, int _samples)
void	resolveMultisampling (ACG::FBO *_dst, ACG::FBO *_src)

Private Attributes
int	debugLevel_
	perform extra checks for debugging: 0 -> no checks, 1 -> fast checks, 2 -> more checks etc.
ACG::FBO	sceneFBO_ [2]
	FBO for scene rendering, one for each eye in stereo mode, possibly multisampled.
ACG::FBO	procFBO_ [2]
	post-processing read/write FBOs, no msaa
ACG::FBO	stereoFBO_ [2]
	store post processing results for each stereo eyes, input for anaglyph processor, no msaa
GLuint	backbufferFBO_
	backbuffer output, not owned by this class
GLuint	backbufferTarget_
GLint	backbufferViewport_ [4]
bool	stereoMode_
	postprocessing in stereo mode

Detailed Description

Definition at line 59 of file PostProcessing.hh.

Member Function Documentation

void PostProcessing::postProcess	(	int	_viewerID,
		ACG::GLState *	_glstate,
		const ACG::GLMatrixd &	_modelview,
		const ACG::GLMatrixd &	_proj1,
		const ACG::GLMatrixd &	_proj2,
		bool	_hwOpenGLStereo = false
	)

Perform all post processing.

Post processors might require modelview and projection matrix. In stereo mode, the post processor chain is executed for each eye separately. The resulting stereo buffers for each eye have to be resolved either by hardware OpenGL support or by manually calling resoleStereoAnaglyph() afterwards.

Parameters

_viewerID	OpenFlipper viewer id (viewport index)
_modelview	modelview matrix of the scene
_proj1	projection matrix 1 (left eye in stereo mode)
_proj2	projection matrix 2 (right eye in stereo mode)
_hwOpenGLStereo	hardware stereo support should be used to resolve the stereo buffers (GL_BACK_LEFT, GL_BACK_RIGHT)

Definition at line 235 of file PostProcessing.cc.

void PostProcessing::resolveStereoAnyglyph

(

int

_viewerID

)

Resolve stereo buffers as anaglyph.

Final textures are combined to an anaglyph image.

Parameters

_viewerID

OpenFlipper viewer id (viewport index)

Definition at line 457 of file PostProcessing.cc.

int PostProcessing::setupScene	(	int	_viewerID,
		int	_width,
		int	_height,
		int	_samples = 0,
		int	_stereoEye = -1
	)

Bind fbo for scene rendering.

Setup fbo and draw buffer as target for scene rendering. Some post processing effects require special targets and setupScene() takes this into account.

Parameters

_viewerID	OpenFlipper viewer id (viewport index)
_width	texture width
_height	texture height
_samples	number of samples for multisampling
_stereoEye	eye from which to render the scene: -1 (no stereo rendering), 0 (left eye), 1 (right eye)

Returns

negative (unchanged fbo ie. use current hardware fbo), 0 (fail), 1 (fbo has been changed)

Definition at line 76 of file PostProcessing.cc.

---

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

• OpenFlipper/widgets/glWidget/PostProcessing.hh
• OpenFlipper/widgets/glWidget/PostProcessing.cc