three 基础库
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import { MathUtils } from '../../../../build/three.module.js';
import { ShaderPass } from '../../postprocessing/ShaderPass.js';
import { NodeMaterial } from '../materials/NodeMaterial.js';
import { ScreenNode } from '../inputs/ScreenNode.js';
class NodePass extends ShaderPass {
constructor() {
super();
this.name = '';
this.uuid = MathUtils.generateUUID();
this.userData = {};
this.textureID = 'renderTexture';
this.input = new ScreenNode();
this.material = new NodeMaterial();
this.needsUpdate = true;
}
render() {
if ( this.needsUpdate ) {
this.material.dispose();
this.material.fragment.value = this.input;
this.needsUpdate = false;
}
this.uniforms = this.material.uniforms;
super.render( ...arguments );
}
copy( source ) {
this.input = source.input;
return this;
}
toJSON( meta ) {
var isRootObject = ( meta === undefined || typeof meta === 'string' );
if ( isRootObject ) {
meta = {
nodes: {}
};
}
if ( meta && ! meta.passes ) meta.passes = {};
if ( ! meta.passes[ this.uuid ] ) {
var data = {};
data.uuid = this.uuid;
data.type = 'NodePass';
meta.passes[ this.uuid ] = data;
if ( this.name !== '' ) data.name = this.name;
if ( JSON.stringify( this.userData ) !== '{}' ) data.userData = this.userData;
data.input = this.input.toJSON( meta ).uuid;
}
meta.pass = this.uuid;
return meta;
}
}
export { NodePass };