SoVertexAttribute4ub

InventorModule

genre	Shader
author	MeVis Medical Solutions AG
package	MeVisLab/Standard
dll	SoShader
definition	SoShader.def

Purpose

The module SoVertexAttribute4ub allows for providing a named vertex attribute to the SoVertexShader shader.

Note that the number of values needs to match the number of vertices of the geometry that is rendered (as given by SoVertexProperty, SoCoordinate3, or SoCoordinate4).

Vertex attributes are only supported if vertex array rendering is used, which is the case for SoFaceSet, SoIndexedTriangleSet, SoIndexedFaceSet, SoLineSet, SoIndexedLineSet, SoPointSet nodes if the PER_VERTEX or PER_VERTEX_INDEXED mapping is used.

Output Fields

self

name: self, type: SoNode

Place this node in front of the shape node that should be rendered.

Parameter Fields

Visible Fields

Name

name: name, type: String, default: attribute1

Sets the name of the attribute as used in the shader.

If the current vertex shader does not use the attribute, it is not bound.

Per Instance

name: perInstance, type: Bool, default: FALSE

Values

name: values, type: IntegerList, default: 0

Sets the values of the attribute.

Note that each UInt32 value is interpreted as 4 unsigned bytes that are loaded as RGBA. The byte ordering is as in SbColor.getPackedValue.

Normalized

name: normalized, type: Bool, default: TRUE

If checked, the values are normalized to the range [-1, 1] in the shader.