View2DTextureLUTShader Class Reference

abstract base class for shaders that use a 2D texture for LUT lookup More...

#include <View2DShader.h>

Inheritance diagram for View2DTextureLUTShader:

Public Member Functions
	View2DTextureLUTShader ()
	~View2DTextureLUTShader () override
void	bindFilterKernelTexture () override
	bind the filter kernel texture
void	bindLutTexture () override
	bind the lut texture to the current texture unit
float	getLutHeightScaleFactor () override
SbVec2s	getLutTextureSize () override
Public Member Functions inherited from View2DShader
	View2DShader ()
virtual	~View2DShader ()
virtual const char *	name ()=0
	returns the name of the shader
virtual void	bind (View2DTexture *texture, int tw, int th)=0
	binds/activates the shader, tw and th give the "poweroftwo" size of current subtexture that is rendered
virtual void	unbind ()=0
	deactivates the shader
virtual void	getRequiredTextureLayout (View2DTexture *texture, GLuint &format, GLuint &internalFormat, GLuint &transferDataType)
	returns the required texture layout that a GL texture must use, as GL_format enums and datatypes
virtual void	setLut (View2DLut *newLut)
	sets the lut currently used
View2DLut *	getLut ()
	gets the lut
void	invalidateLut ()
	invalidate the lut

Protected Member Functions
void	createLutTexture ()
	creates a 2D texture from the shader's LUT
void	updateLutTexture ()
	upload the lut to the texture (texture must be already created)
void	destroyLutTexture ()
	frees the lut texture
void	createFilterKernelTexture ()
	create 1d filter kernel texture (using the approach described in section 20.2 of GPU Gems 2)
void	destroyFilterKernelTexture ()
	destroy the filter kernel

Static Protected Member Functions
static GLint	desiredLutTextureFormat ()

Protected Attributes
ml::GLTexture	_lutTexture
	texture that stores the LUT data
GLint	_lutTextureFormat
ml::GLTexture	_kernelTexture
int	_lutTextureWidth
	power-of-two width of lut texture
int	_lutTextureHeight
	power-of-two height of lut texture
int	_lutHeight
	number of COMPLETE texture rows used by the LUT (an additional row may be used partly)
Protected Attributes inherited from View2DShader
View2DLut *	_lut
	pointer to the LUT data
ml::LUTDataId	_lastLutChangeID
	id of last lut
int	_lastLutSize
	last size of lut

Additional Inherited Members
Static Public Member Functions inherited from View2DShader
static void	applyTextureFilter (View2DTextureFilter filter)
	set the correct texture filtering on the currently bound texture

Detailed Description

abstract base class for shaders that use a 2D texture for LUT lookup

Definition at line 87 of file View2DShader.h.

Constructor & Destructor Documentation

View2DTextureLUTShader()

View2DTextureLUTShader::View2DTextureLUTShader

(

)

~View2DTextureLUTShader()

View2DTextureLUTShader::~View2DTextureLUTShader ( )

override

Member Function Documentation

bindFilterKernelTexture()

void View2DTextureLUTShader::bindFilterKernelTexture ( )

overridevirtual

bind the filter kernel texture

Reimplemented from View2DShader.

bindLutTexture()

void View2DTextureLUTShader::bindLutTexture ( )

overridevirtual

bind the lut texture to the current texture unit

Reimplemented from View2DShader.

createFilterKernelTexture()

void View2DTextureLUTShader::createFilterKernelTexture ( )

protected

create 1d filter kernel texture (using the approach described in section 20.2 of GPU Gems 2)

createLutTexture()

void View2DTextureLUTShader::createLutTexture ( )

protected

creates a 2D texture from the shader's LUT

desiredLutTextureFormat()

static GLint View2DTextureLUTShader::desiredLutTextureFormat ( )

staticprotected

destroyFilterKernelTexture()

void View2DTextureLUTShader::destroyFilterKernelTexture ( )

protected

destroy the filter kernel

destroyLutTexture()

void View2DTextureLUTShader::destroyLutTexture ( )

protected

frees the lut texture

getLutHeightScaleFactor()

float View2DTextureLUTShader::getLutHeightScaleFactor ( )

overridevirtual

Reimplemented from View2DShader.

getLutTextureSize()

SbVec2s View2DTextureLUTShader::getLutTextureSize ( )

overridevirtual

Reimplemented from View2DShader.

updateLutTexture()

void View2DTextureLUTShader::updateLutTexture ( )

protected

upload the lut to the texture (texture must be already created)

Member Data Documentation

_kernelTexture

ml::GLTexture View2DTextureLUTShader::_kernelTexture

protected

Definition at line 122 of file View2DShader.h.

_lutHeight

int View2DTextureLUTShader::_lutHeight

protected

number of COMPLETE texture rows used by the LUT (an additional row may be used partly)

Definition at line 129 of file View2DShader.h.

_lutTexture

ml::GLTexture View2DTextureLUTShader::_lutTexture

protected

texture that stores the LUT data

Definition at line 119 of file View2DShader.h.

_lutTextureFormat

GLint View2DTextureLUTShader::_lutTextureFormat

protected

Definition at line 120 of file View2DShader.h.

_lutTextureHeight

int View2DTextureLUTShader::_lutTextureHeight

protected

power-of-two height of lut texture

Definition at line 127 of file View2DShader.h.

_lutTextureWidth

int View2DTextureLUTShader::_lutTextureWidth

protected

power-of-two width of lut texture

Definition at line 125 of file View2DShader.h.

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

• MeVisLab/Standard/Sources/Inventor/SoView2D/View2DShader.h