添加关照、全局等高线、修改图层问题

static/sdk/three/jsm/nodes/display/GaussianBlurNode.js

@@ -0,0 +1,190 @@
+import TempNode from '../core/TempNode.js';
+import { nodeObject, addNodeElement, tslFn, float, vec2, vec4 } from '../shadernode/ShaderNode.js';
+import { NodeUpdateType } from '../core/constants.js';
+import { mul } from '../math/OperatorNode.js';
+import { uv } from '../accessors/UVNode.js';
+import { texturePass } from './PassNode.js';
+import { uniform } from '../core/UniformNode.js';
+import { Vector2, RenderTarget } from 'three';
+import QuadMesh from '../../objects/QuadMesh.js';
+
+// WebGPU: The use of a single QuadMesh for both gaussian blur passes results in a single RenderObject with a SampledTexture binding that
+// alternates between source textures and triggers creation of new BindGroups and BindGroupLayouts every frame.
+
+const quadMesh1 = new QuadMesh();
+const quadMesh2 = new QuadMesh();
+
+class GaussianBlurNode extends TempNode {
+
+	constructor( textureNode, sigma = 2 ) {
+
+		super( 'vec4' );
+
+		this.textureNode = textureNode;
+		this.sigma = sigma;
+
+		this.directionNode = vec2( 1 );
+
+		this._invSize = uniform( new Vector2() );
+		this._passDirection = uniform( new Vector2() );
+
+		this._horizontalRT = new RenderTarget();
+		this._horizontalRT.texture.name = 'GaussianBlurNode.horizontal';
+		this._verticalRT = new RenderTarget();
+		this._verticalRT.texture.name = 'GaussianBlurNode.vertical';
+
+		this._textureNode = texturePass( this, this._verticalRT.texture );
+
+		this.updateBeforeType = NodeUpdateType.RENDER;
+
+		this.resolution = new Vector2( 1, 1 );
+
+	}
+
+	setSize( width, height ) {
+
+		width = Math.max( Math.round( width * this.resolution.x ), 1 );
+		height = Math.max( Math.round( height * this.resolution.y ), 1 );
+
+		this._invSize.value.set( 1 / width, 1 / height );
+		this._horizontalRT.setSize( width, height );
+		this._verticalRT.setSize( width, height );
+
+	}
+
+	updateBefore( frame ) {
+
+		const { renderer } = frame;
+
+		const textureNode = this.textureNode;
+		const map = textureNode.value;
+
+		const currentRenderTarget = renderer.getRenderTarget();
+		const currentTexture = textureNode.value;
+
+		quadMesh1.material = this._material;
+		quadMesh2.material = this._material;
+
+		this.setSize( map.image.width, map.image.height );
+
+		const textureType = map.type;
+
+		this._horizontalRT.texture.type = textureType;
+		this._verticalRT.texture.type = textureType;
+
+		// horizontal
+
+		renderer.setRenderTarget( this._horizontalRT );
+
+		this._passDirection.value.set( 1, 0 );
+
+		quadMesh1.render( renderer );
+
+		// vertical
+
+		textureNode.value = this._horizontalRT.texture;
+		renderer.setRenderTarget( this._verticalRT );
+
+		this._passDirection.value.set( 0, 1 );
+
+		quadMesh2.render( renderer );
+
+		// restore
+
+		renderer.setRenderTarget( currentRenderTarget );
+		textureNode.value = currentTexture;
+
+	}
+
+	getTextureNode() {
+
+		return this._textureNode;
+
+	}
+
+	setup( builder ) {
+
+		const textureNode = this.textureNode;
+
+		if ( textureNode.isTextureNode !== true ) {
+
+			console.error( 'GaussianBlurNode requires a TextureNode.' );
+
+			return vec4();
+
+		}
+
+		//
+
+		const uvNode = textureNode.uvNode || uv();
+
+		const sampleTexture = ( uv ) => textureNode.cache().context( { getUV: () => uv, forceUVContext: true } );
+
+		const blur = tslFn( () => {
+
+			const kernelSize = 3 + ( 2 * this.sigma );
+			const gaussianCoefficients = this._getCoefficients( kernelSize );
+
+			const invSize = this._invSize;
+			const direction = vec2( this.directionNode ).mul( this._passDirection );
+
+			const weightSum = float( gaussianCoefficients[ 0 ] ).toVar();
+			const diffuseSum = vec4( sampleTexture( uvNode ).mul( weightSum ) ).toVar();
+
+			for ( let i = 1; i < kernelSize; i ++ ) {
+
+				const x = float( i );
+				const w = float( gaussianCoefficients[ i ] );
+
+				const uvOffset = vec2( direction.mul( invSize.mul( x ) ) ).toVar();
+
+				const sample1 = vec4( sampleTexture( uvNode.add( uvOffset ) ) );
+				const sample2 = vec4( sampleTexture( uvNode.sub( uvOffset ) ) );
+
+				diffuseSum.addAssign( sample1.add( sample2 ).mul( w ) );
+				weightSum.addAssign( mul( 2.0, w ) );
+
+			}
+
+			return diffuseSum.div( weightSum );
+
+		} );
+
+		//
+
+		const material = this._material || ( this._material = builder.createNodeMaterial() );
+		material.fragmentNode = blur();
+
+		//
+
+		const properties = builder.getNodeProperties( this );
+		properties.textureNode = textureNode;
+
+		//
+
+		return this._textureNode;
+
+	}
+
+	_getCoefficients( kernelRadius ) {
+
+		const coefficients = [];
+
+		for ( let i = 0; i < kernelRadius; i ++ ) {
+
+			coefficients.push( 0.39894 * Math.exp( - 0.5 * i * i / ( kernelRadius * kernelRadius ) ) / kernelRadius );
+
+		}
+
+		return coefficients;
+
+	}
+
+}
+
+export const gaussianBlur = ( node, sigma ) => nodeObject( new GaussianBlurNode( nodeObject( node ), sigma ) );
+
+addNodeElement( 'gaussianBlur', gaussianBlur );
+
+export default GaussianBlurNode;
+