VertexAttribInterpolator Interface Reference

import"evg.idl";

Public Member Functions
	VertexAttribInterpolator (Float32Buffer data, long nb_components, optional AttributeMapType map=GF_EVG_VAI_VERTEX_INDEX)
	VertexAttribInterpolator (long nb_components)

Data Fields
writeonly boolean	normalize

Detailed Description

Vertex attribute interpolator used by fragment shaders

Constructor & Destructor Documentation

VertexAttribInterpolator() [1/2]

VertexAttribInterpolator::VertexAttribInterpolator	(	Float32Buffer	data,
		long	nb_components,
		optional AttributeMapType	map = GF_EVG_VAI_VERTEX_INDEX
	)

constructor

This constructor is typically used for vertex attributes that do not need any modification at the vertex shader stage and are directly interpolated in the fragment shader

Parameters

data	float buffer containing the vertex attribute data
nb_components	number of floats per attribute
map	mapping mode of attribute per vertex or primitive

VertexAttribInterpolator() [2/2]

VertexAttribInterpolator::VertexAttribInterpolator

(

long

nb_components

)

constructor

This constructor is used for vertex attributes that are fetched through VertexAttrib in the vertex shader and need to be passed to the fragment shader

Parameters

nb_components

number of floats per attribute

Field Documentation

normalize

writeonly boolean VertexAttribInterpolator::normalize

if set, the attribute value will be normalized upon fetch by the shader