THREE ['shadowmap_fragment'] in r115

fossas · March 14, 2021, 1:30pm

I am consoling log THREE.ShaderChunk[‘shadowmap_fragment’] but it is undefined in version r115. Is there any equivalent in that version?

Thanks in advance.

Mugen87 · March 14, 2021, 3:09pm

This specific shader chunk is gone for years, see:

I suggest you study the implementation of THREE.ShadowMaterial. The shadow code is now a bit different than five years ago.

fossas · March 15, 2021, 12:01pm

Hello! Sorry for the late reply and thank you very much. Probably, next time I will extend the shader Phong material instead of importing chunks.

Thanks again!

IARI · February 16, 2023, 12:08pm

@Mugen87
I want to study ShadowMaterial for a different reason - its just now working with log depthbuffer (as pointed out here and on this github issue)
looking for the ShadowMaterial implementation, I cannot really find anything.

github.com

mrdoob/three.js/blob/182432d33956abc7525530822a9402dc05d074dc/src/materials/ShadowMaterial.js

import { Material } from './Material.js';
import { Color } from '../math/Color.js';

class ShadowMaterial extends Material {

	constructor( parameters ) {

		super();

		this.isShadowMaterial = true;

		this.type = 'ShadowMaterial';

		this.color = new Color( 0x000000 );
		this.transparent = true;

		this.fog = true;

		this.setValues( parameters );

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theres barely any code at all inside there - what am I missing?

(nvm - you already fixxed it it seems)

Mugen87 · February 16, 2023, 1:48pm

The shader itself is defined in a separate file:

github.com

mrdoob/three.js/blob/182432d33956abc7525530822a9402dc05d074dc/src/renderers/shaders/ShaderLib/shadow.glsl.js

export const vertex = /* glsl */`
#include <common>
#include <fog_pars_vertex>
#include <morphtarget_pars_vertex>
#include <skinning_pars_vertex>
#include <logdepthbuf_pars_vertex>
#include <shadowmap_pars_vertex>

void main() {

	#include <beginnormal_vertex>
	#include <morphnormal_vertex>
	#include <skinbase_vertex>
	#include <skinnormal_vertex>
	#include <defaultnormal_vertex>

	#include <begin_vertex>
	#include <morphtarget_vertex>
	#include <skinning_vertex>
	#include <project_vertex>

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But as you can see, it’s just a collection of shader chunks. These are located in the following directory:

If you want to study the shader code in a more complete manner, I suggest you use Spector.js (a WebGL development tool for the browser).