GlTexelFetch Class Reference

#include <ImFusion/GL/GlTexelFetch.h>

Read single intensity values from an OpenGL texture. More...

Inheritance diagram for GlTexelFetch:

Detailed Description

Read single intensity values from an OpenGL texture.

Public Member Functions
	GlTexelFetch ()
	Constructor, not setting up shader yet.
	~GlTexelFetch () override
	Destructor.
const std::vector< float > &	read (const GlImage *tex, int x, int y, int z=0)
	Retrieve scalar intensity value at specified location.

Static Public Member Functions
static GlTexelFetch &	instance ()
	Singleton access to instance.
Static Public Member Functions inherited from InstanceManager< GlTexelFetch >
static GlTexelFetch &	cachedInstance ()
	Returns the cached instance of type T for the currently active OpenGL context.

Protected Attributes
std::unique_ptr< GL::Program >	m_prog
	Shader program for intensity retrieval.
std::unique_ptr< GL::Framebuffer >	m_fbo
	Required FBO instance.
std::unique_ptr< GL::Texture >	m_imgOut
	Output image for retrieved intensity.
std::vector< float >	m_valOut
	Output intensities for all channels.

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

• ImFusion/GL/GlTexelFetch.h