Module gl1

Package de.grogra.glsl.material.channel

Class GLSLChannelSPD

java.lang.Object

de.grogra.glsl.material.channel.GLSLChannelMap

de.grogra.glsl.material.channel.GLSLChannelSPD

public class GLSLChannelSPD
extends GLSLChannelMap

GLSL channel map for spectral ChannelSPD channels. Converts the spectral curve to a gamma-corrected sRGB constant at shader compilation time via ColorMap.getAverageColor() and emits it as a vec3 literal. The colour stays fixed until the shader is recompiled.

Uses ColorMap (available in the math module) to avoid a hard compile-time dependency on the GPUFlux module. The runtime class is resolved once via Class.forName(java.lang.String) and cached in

invalid reference

#CHANNEL_SPD_CLASS

.

Author:

M Henke at YNL 2026

Constructor Summary

Constructors

Constructor	Description
GLSLChannelSPD()

Method Summary

Modifier and Type	Method	Description
Result	generate(ChannelMap inp, MaterialConfiguration cs, GLSLChannelMap inpChan, int channel)	This should be used instead of the other one
Class	instanceFor()	Not used — instanceForName() provides the classloader-safe key.
String	instanceForName()	Returns the fully-qualified name of the ChannelMap class this handler covers.

Methods inherited from class de.grogra.glsl.material.channel.GLSLChannelMap

generateResult, generateResult, generateResultWithChannelDefault, getGLSLObject, getMaxResultType, initMap, mayDiscard

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

GLSLChannelSPD

public GLSLChannelSPD()

Method Details

generate

public Result generate(ChannelMap inp,
 MaterialConfiguration cs,
 GLSLChannelMap inpChan,
 int channel)

Description copied from class: GLSLChannelMap

This should be used instead of the other one

Specified by:

generate in class GLSLChannelMap

Parameters:

inp -

cs -

inpChan -

channel -

Returns:

instanceFor

public Class instanceFor()

Not used — instanceForName() provides the classloader-safe key.

Specified by:

instanceFor in class GLSLChannelMap

instanceForName

public String instanceForName()

Description copied from class: GLSLChannelMap

Returns the fully-qualified name of the ChannelMap class this handler covers. Used by ChannelCollection for classloader-safe lookup (OSGi plugins each have their own classloader, so Class identity cannot be used as a map key across plugin boundaries).

The default delegates to GLSLChannelMap.instanceFor(). Subclasses that handle classes from a foreign plugin (e.g. ChannelSPD in the GPUFlux plugin) should override this to return a string literal so that no cross-loader Class object is required.

Overrides:

instanceForName in class GLSLChannelMap