main repo

node_modules/three/examples/jsm/tsl/shadows/TileShadowNode.js

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+import {
+	Vector3,
+	Object3D,
+	ShadowBaseNode,
+	Plane,
+	Line3,
+	DepthTexture,
+	LessCompare,
+	Vector2,
+	RedFormat,
+	ArrayCamera,
+	VSMShadowMap,
+	RendererUtils,
+	Quaternion
+} from 'three/webgpu';
+
+import { min, Fn, shadow, NodeUpdateType, getShadowMaterial, getShadowRenderObjectFunction } from 'three/tsl';
+
+const { resetRendererAndSceneState, restoreRendererAndSceneState } = RendererUtils;
+let _rendererState;
+
+const _cameraLayers = [];
+const _vec3Temp1 = /*@__PURE__*/ new Vector3();
+const _vec3Temp2 = /*@__PURE__*/ new Vector3();
+const _vec3Temp3 = /*@__PURE__*/ new Vector3();
+const _quatTemp1 = /*@__PURE__*/ new Quaternion();
+
+class LwLight extends Object3D {
+
+	constructor() {
+
+		super();
+		this.target = new Object3D();
+
+	}
+
+}
+
+/**
+ * A class that extends `ShadowBaseNode` to implement tiled shadow mapping.
+ * This allows splitting a shadow map into multiple tiles, each with its own light and camera,
+ * to improve shadow quality and performance for large scenes.
+ *
+ * **Note:** This class does not support `VSMShadowMap` at the moment.
+ *
+ * @class
+ * @augments ShadowBaseNode
+ * @three_import import { TileShadowNode } from 'three/addons/tsl/shadows/TileShadowNode.js';
+ */
+class TileShadowNode extends ShadowBaseNode {
+
+	/**
+	 * Creates an instance of `TileShadowNode`.
+	 *
+	 * @param {Light} light - The original light source used for shadow mapping.
+	 * @param {Object} [options={}] - Configuration options for the tiled shadow node.
+	 * @param {number} [options.tilesX=2] - The number of tiles along the X-axis.
+	 * @param {number} [options.tilesY=2] - The number of tiles along the Y-axis.
+	 * @param {Object} [options.resolution] - The resolution of the shadow map.
+	 * @param {boolean} [options.debug=false] - Whether to enable debug mode.
+	 */
+	constructor( light, options = {} ) {
+
+		super( light );
+
+		// Default configuration with sensible defaults
+		this.config = {
+			tilesX: options.tilesX || 2,
+			tilesY: options.tilesY || 2,
+			resolution: options.resolution || light.shadow.mapSize,
+			debug: options.debug !== undefined ? options.debug : false
+		};
+
+		this.debug = this.config.debug;
+
+		this.originalLight = light;
+		this.lightPlane = new Plane( new Vector3( 0, 1, 0 ), 0 );
+		this.line = new Line3();
+
+		this.initialLightDirection = new Vector3();
+		this.updateLightDirection();
+
+		this._cameraFrameId = new WeakMap();
+
+		this.shadowSize = {
+			top: light.shadow.camera.top,
+			bottom: light.shadow.camera.bottom,
+			left: light.shadow.camera.left,
+			right: light.shadow.camera.right,
+		};
+
+		this.lights = [];
+		this._shadowNodes = [];
+
+		this.tiles = this.generateTiles( this.config.tilesX, this.config.tilesY );
+
+	}
+
+	/**
+	 * Generates the tiles for the shadow map based on the specified number of tiles along the X and Y axes.
+	 *
+	 * @param {number} tilesX - The number of tiles along the X-axis.
+	 * @param {number} tilesY - The number of tiles along the Y-axis.
+	 * @returns {Array<Object>} An array of tile objects, each containing the tile's bounds and index.
+	 */
+	generateTiles( tilesX, tilesY ) {
+
+		const tiles = [];
+		const tileWidth = 1 / tilesX;
+		const tileHeight = 1 / tilesY;
+
+		for ( let y = 0; y < tilesY; y ++ ) {
+
+			for ( let x = 0; x < tilesX; x ++ ) {
+
+				tiles.push( {
+					x: [ x * tileWidth, ( x + 1 ) * tileWidth ],
+					y: [ ( tilesY - 1 - y ) * tileHeight, ( tilesY - y ) * tileHeight ], // Start from top row
+					index: y * tilesX + x
+				} );
+
+			}
+
+		}
+
+		return tiles;
+
+	}
+
+	/**
+	 * Updates the initial light direction based on the light's target position.
+	 */
+	updateLightDirection() {
+
+		this.initialLightDirection.subVectors(
+			this.originalLight.target.getWorldPosition( new Vector3() ),
+			this.originalLight.getWorldPosition( new Vector3() )
+		).normalize();
+
+	}
+
+	/**
+	 * Initializes the tiled shadow node by creating lights, cameras, and shadow maps for each tile.
+	 *
+	 * @param {Builder} builder - The builder used to create render targets and other resources.
+	 */
+	init( builder ) {
+
+		const light = this.originalLight;
+		const parent = light.parent;
+
+		const width = this.shadowSize.right - this.shadowSize.left;
+		const height = this.shadowSize.top - this.shadowSize.bottom;
+
+		const tileCount = this.tiles.length;
+		const shadowWidth = this.config.resolution.width;
+		const shadowHeight = this.config.resolution.height;
+
+		// Clear existing lights/nodes if re-initializing
+		this.disposeLightsAndNodes();
+
+		const depthTexture = new DepthTexture( shadowWidth, shadowHeight, undefined, undefined, undefined, undefined, undefined, undefined, undefined, undefined, tileCount );
+		depthTexture.compareFunction = LessCompare;
+		depthTexture.name = 'ShadowDepthArrayTexture';
+		const shadowMap = builder.createRenderTarget( shadowWidth, shadowHeight, { format: RedFormat, depth: tileCount } );
+		shadowMap.depthTexture = depthTexture;
+		shadowMap.texture.name = 'ShadowTexture';
+		this.shadowMap = shadowMap;
+		const cameras = [];
+
+
+		// Create lights, one for each tile
+		for ( let i = 0; i < tileCount; i ++ ) {
+
+			const lwLight = new LwLight();
+			lwLight.castShadow = true;
+			const lShadow = light.shadow.clone();
+			lShadow.filterNode = light.shadow.filterNode;
+			const tile = this.tiles[ i ];
+			lShadow.camera.left = this.shadowSize.left + width * tile.x[ 0 ];
+			lShadow.camera.right = this.shadowSize.left + width * tile.x[ 1 ];
+			lShadow.camera.top = this.shadowSize.bottom + height * tile.y[ 1 ];
+			lShadow.camera.bottom = this.shadowSize.bottom + height * tile.y[ 0 ];
+			lShadow.bias = light.shadow.bias;
+			lShadow.camera.near = light.shadow.camera.near;
+			lShadow.camera.far = light.shadow.camera.far;
+			lShadow.camera.userData.tileIndex = i;
+			lwLight.shadow = lShadow;
+
+			if ( parent ) {
+
+				parent.add( lwLight );
+				parent.add( lwLight.target );
+
+			} else {
+
+				console.warn( 'TileShadowNode: Original light has no parent during init. Tile lights not added to scene graph directly.' );
+
+			}
+
+			this.syncLightTransformation( lwLight, light );
+
+			this.lights.push( lwLight );
+			lShadow.camera.updateMatrixWorld();
+
+			cameras.push( lShadow.camera );
+			const shadowNode = shadow( lwLight, lShadow );
+			shadowNode.depthLayer = i;
+			shadowNode.updateBeforeType = NodeUpdateType.NONE;
+
+			shadowNode.setupRenderTarget = () => {
+
+				return { shadowMap, depthTexture };
+
+			};
+
+			this._shadowNodes.push( shadowNode );
+
+		}
+
+		const cameraArray = new ArrayCamera( cameras );
+		this.cameraArray = cameraArray;
+
+	}
+
+	/**
+	 * Updates the light transformations and shadow cameras for each tile.
+	 */
+	update() {
+
+		const light = this.originalLight;
+
+		const shadowCam = light.shadow.camera;
+		const lsMin = new Vector2( shadowCam.left, shadowCam.bottom );
+		const lsMax = new Vector2( shadowCam.right, shadowCam.top );
+		const fullWidth = lsMax.x - lsMin.x;
+		const fullHeight = lsMax.y - lsMin.y;
+
+		for ( let i = 0; i < this.lights.length; i ++ ) {
+
+			const lwLight = this.lights[ i ];
+			const tile = this.tiles[ i ];
+			this.syncLightTransformation( lwLight, light );
+			const lShadow = lwLight.shadow;
+			const tileLeft = lsMin.x + tile.x[ 0 ] * fullWidth;
+			const tileRight = lsMin.x + tile.x[ 1 ] * fullWidth;
+			const tileBottom = lsMin.y + tile.y[ 0 ] * fullHeight;
+			const tileTop = lsMin.y + tile.y[ 1 ] * fullHeight;
+			lShadow.camera.left = tileLeft;
+			lShadow.camera.right = tileRight;
+			lShadow.camera.bottom = tileBottom;
+			lShadow.camera.top = tileTop;
+			lShadow.camera.near = light.shadow.camera.near;
+			lShadow.camera.far = light.shadow.camera.far;
+			lShadow.camera.updateProjectionMatrix();
+			lShadow.camera.updateWorldMatrix( true, false );
+			lShadow.camera.updateMatrixWorld( true );
+			this._shadowNodes[ i ].shadow.needsUpdate = true;
+
+		}
+
+	}
+
+	/**
+     * Updates the shadow map rendering.
+     * @param {NodeFrame} frame - A reference to the current node frame.
+     */
+	updateShadow( frame ) {
+
+		const { shadowMap, light } = this;
+		const { renderer, scene, camera } = frame;
+		const shadowType = renderer.shadowMap.type;
+		const depthVersion = shadowMap.depthTexture.version;
+		this._depthVersionCached = depthVersion;
+		const currentRenderObjectFunction = renderer.getRenderObjectFunction();
+		const currentMRT = renderer.getMRT();
+		const useVelocity = currentMRT ? currentMRT.has( 'velocity' ) : false;
+
+		_rendererState = resetRendererAndSceneState( renderer, scene, _rendererState );
+		scene.overrideMaterial = getShadowMaterial( light );
+		renderer.setRenderTarget( this.shadowMap );
+
+
+		for ( let index = 0; index < this.lights.length; index ++ ) {
+
+			const light = this.lights[ index ];
+			const shadow = light.shadow;
+
+			const _shadowCameraLayer = shadow.camera.layers.mask;
+			_cameraLayers.push( _shadowCameraLayer );
+
+			if ( ( shadow.camera.layers.mask & 0xFFFFFFFE ) === 0 ) {
+
+				shadow.camera.layers.mask = camera.layers.mask;
+
+			}
+
+			shadow.updateMatrices( light );
+
+			renderer.setRenderObjectFunction( getShadowRenderObjectFunction( renderer, shadow, shadowType, useVelocity ) );
+			this.shadowMap.setSize( shadow.mapSize.width, shadow.mapSize.height, shadowMap.depth );
+
+		}
+
+		renderer.render( scene, this.cameraArray );
+		renderer.setRenderObjectFunction( currentRenderObjectFunction );
+
+		if ( light.isPointLight !== true && shadowType === VSMShadowMap ) {
+
+			console.warn( 'THREE.TileShadowNode: VSM shadow map is not supported yet.' );
+			// this.vsmPass( renderer );
+
+		}
+
+		restoreRendererAndSceneState( renderer, scene, _rendererState );
+
+		for ( let index = 0; index < this.lights.length; index ++ ) {
+
+			const light = this.lights[ index ];
+			const shadow = light.shadow;
+
+			shadow.camera.layers.mask = _cameraLayers[ index ];
+
+		}
+
+		_cameraLayers.length = 0;
+
+	}
+
+	/**
+	 * The implementation performs the update of the shadow map if necessary.
+	 *
+	 * @param {NodeFrame} frame - A reference to the current node frame.
+	 */
+	updateBefore( frame ) {
+
+		const shadow = this.originalLight.shadow;
+
+		let needsUpdate = shadow.needsUpdate || shadow.autoUpdate;
+
+		if ( needsUpdate ) {
+
+			if ( this._cameraFrameId[ frame.camera ] === frame.frameId ) {
+
+				needsUpdate = false;
+
+			}
+
+			this._cameraFrameId[ frame.camera ] = frame.frameId;
+
+		}
+
+		if ( needsUpdate ) {
+
+			this.update();
+			this.updateShadow( frame );
+
+			if ( this.shadowMap.depthTexture.version === this._depthVersionCached ) {
+
+				shadow.needsUpdate = false;
+
+			}
+
+		}
+
+	}
+
+	/**
+	 * Synchronizes the transformation of a tile light with the source light.
+	 *
+	 * @param {LwLight} lwLight - The tile light to synchronize.
+	 * @param {Light} sourceLight - The source light to copy transformations from.
+	 */
+	syncLightTransformation( lwLight, sourceLight ) {
+
+		const sourceWorldPos = sourceLight.getWorldPosition( _vec3Temp1 );
+		const targetWorldPos = sourceLight.target.getWorldPosition( _vec3Temp2 );
+		const forward = _vec3Temp3.subVectors( targetWorldPos, sourceWorldPos );
+		const targetDistance = forward.length();
+		forward.normalize();
+		lwLight.position.copy( sourceWorldPos );
+		lwLight.target.position.copy( sourceWorldPos ).add( forward.multiplyScalar( targetDistance ) );
+		lwLight.quaternion.copy( sourceLight.getWorldQuaternion( _quatTemp1 ) );
+		lwLight.scale.copy( sourceLight.scale );
+		lwLight.updateMatrix();
+		lwLight.updateMatrixWorld( true );
+		lwLight.target.updateMatrix();
+		lwLight.target.updateMatrixWorld( true );
+
+	}
+
+	/**
+	 * Sets up the shadow node for rendering.
+	 *
+	 * @param {Builder} builder - The builder used to set up the shadow node.
+	 * @returns {Node} A node representing the shadow value.
+	 */
+	setup( builder ) {
+
+		if ( this.lights.length === 0 ) {
+
+			this.init( builder );
+
+		}
+
+		return Fn( ( builder ) => {
+
+			this.setupShadowPosition( builder );
+			return min( ...this._shadowNodes ).toVar( 'shadowValue' );
+
+		} )();
+
+	}
+
+	/**
+     * Helper method to remove lights and associated nodes/targets.
+     * Used internally during dispose and potential re-initialization.
+     */
+	disposeLightsAndNodes() {
+
+		for ( const light of this.lights ) {
+
+			const parent = light.parent;
+			if ( parent ) {
+
+				parent.remove( light.target );
+				parent.remove( light );
+
+			}
+
+		}
+
+		this.lights = [];
+		this._shadowNodes = [];
+
+		if ( this.shadowMap ) {
+
+			this.shadowMap.dispose(); // Disposes render target and textures
+			this.shadowMap = null;
+
+		}
+
+	}
+
+
+	dispose() {
+
+		// Dispose lights, nodes, and shadow map
+		this.disposeLightsAndNodes();
+		super.dispose();
+
+	}
+
+}
+
+export { TileShadowNode };

node_modules/three/examples/jsm/tsl/shadows/TileShadowNodeHelper.js

@@ -0,0 +1,212 @@
+import { Group, NodeMaterial, Mesh, PlaneGeometry, DoubleSide, CameraHelper } from 'three/webgpu';
+import { Fn, vec4, vec3, texture, uv, positionLocal, vec2, float, screenSize } from 'three/tsl';
+
+/**
+ * Helper class to manage and display debug visuals for TileShadowNode.
+ *
+ * @augments Group
+ * @three_import import { TileShadowNodeHelper } from 'three/addons/tsl/shadows/TileShadowNodeHelper.js';
+ */
+class TileShadowNodeHelper extends Group {
+
+	/**
+	 * @param {TileShadowNode} tileShadowNode The TileShadowNode instance to debug.
+	 */
+	constructor( tileShadowNode ) {
+
+		super();
+
+		if ( ! tileShadowNode ) {
+
+			throw new Error( 'TileShadowNode instance is required for TileShadowNodeHelper.' );
+
+		}
+
+		this.tileShadowNode = tileShadowNode;
+		this.config = tileShadowNode.config;
+		this.tiles = tileShadowNode.tiles;
+		this._debugMeshes = [];
+		this._shadowCamHelpers = [];
+
+		this.initialized = false;
+
+	}
+
+	/**
+	 * Initializes the debug displays (planes and camera helpers).
+	 * Should be called after TileShadowNode has initialized its lights and shadow nodes.
+	 */
+	init() {
+
+		if ( this.tileShadowNode._shadowNodes.length !== this.tiles.length ) {
+
+			console.error( 'Cannot initialize TileShadowNodeHelper: Shadow nodes not ready or mismatch count.' );
+			return;
+
+		}
+
+		const tilesX = this.config.tilesX;
+		const tilesY = this.config.tilesY;
+
+		// Clear previous helpers if any (e.g., during a re-init)
+		this.dispose();
+
+		// Create a display for each shadow map tile
+		for ( let i = 0; i < this.tiles.length; i ++ ) {
+
+			// Create display plane
+			const display = new Mesh( new PlaneGeometry( 1, 1 ), new NodeMaterial() );
+			display.renderOrder = 9999999; // Ensure they appear on top
+			display.material.transparent = true;
+			display.frustumCulled = false;
+			display.side = DoubleSide;
+			display.material.depthTest = false; // Disable depth testing
+			display.material.depthWrite = false; // Disable depth writing
+
+			const col = i % tilesX;
+			const row = Math.floor( i / tilesX );
+
+			// Vertex shader logic for positioning the debug quad
+			display.material.vertexNode = Fn( () => {
+
+				const aspectRatio = screenSize.x.div( screenSize.y );
+				const maxTiles = Math.max( tilesX, tilesY );
+				const displaySize = float( 0.8 / maxTiles ); // Size adapts to number of tiles
+				const margin = float( 0.01 );
+				const cornerOffset = float( 0.05 );
+
+				// Position tiles left-to-right, top-to-bottom
+				const xBase = float( - 1.0 ).add( cornerOffset ).add(
+					displaySize.div( 2 ).div( aspectRatio )
+				).add( float( col ).mul( displaySize.div( aspectRatio ).add( margin ) ) );
+
+				const yBase = float( 1.0 ).sub( cornerOffset ).sub(
+					displaySize.div( 2 )
+				).sub( float( row ).mul( displaySize.add( margin ) ) );
+
+				const scaledPos = vec2(
+					positionLocal.x.mul( displaySize.div( aspectRatio ) ),
+					positionLocal.y.mul( displaySize )
+				);
+
+				const finalPos = vec2(
+					scaledPos.x.add( xBase ),
+					scaledPos.y.add( yBase )
+				);
+
+				return vec4( finalPos.x, finalPos.y, 0.0, 1.0 );
+
+			} )();
+
+			display.material.outputNode = Fn( () => {
+
+				// Ensure shadowMap and depthTexture are available
+				if ( ! this.tileShadowNode.shadowMap || ! this.tileShadowNode.shadowMap.depthTexture ) {
+
+					return vec4( 1, 0, 1, 1 ); // Magenta error color
+
+				}
+
+				const sampledDepth = texture( this.tileShadowNode.shadowMap.depthTexture )
+					.sample( uv().flipY() )
+					.depth( float( i ) ) // Sample correct layer
+					.compare( 0.9 ); // Example comparison value
+
+				// Simple tint based on index for visual distinction
+				const r = float( 0.5 + ( i % 3 ) * 0.16 );
+				const g = float( 0.5 + ( i % 2 ) * 0.25 );
+				const b = float( 0.7 + ( i % 4 ) * 0.075 );
+
+				return vec4(
+					vec3( r, g, b )
+						.mul( sampledDepth )
+						.saturate()
+						.rgb,
+					1.0
+				);
+
+			} )();
+
+			this.add( display );
+			this._debugMeshes.push( display );
+
+			if ( this.tileShadowNode._shadowNodes[ i ] && this.tileShadowNode._shadowNodes[ i ].shadow ) {
+
+				const camHelper = new CameraHelper( this.tileShadowNode._shadowNodes[ i ].shadow.camera );
+				camHelper.fog = false;
+				this.add( camHelper );
+				this._shadowCamHelpers.push( camHelper );
+
+			} else {
+
+				console.warn( `TileShadowNodeHelper: Could not create CameraHelper for tile index ${i}. Shadow node or camera missing.` );
+				this._shadowCamHelpers.push( null );
+
+			}
+
+		}
+
+		this.initialized = true;
+
+	}
+
+	/**
+	 * Updates the debug visuals (specifically camera helpers).
+	 * Should be called within TileShadowNode's update method.
+	 */
+	update() {
+
+		if ( this.initialized === false ) {
+
+			this.init();
+
+		}
+
+		for ( const helper of this._shadowCamHelpers ) {
+
+			if ( helper ) {
+
+				helper.update(); // Update CameraHelper matrices
+				helper.updateMatrixWorld( true ); // Ensure world matrix is current
+
+			}
+
+		}
+
+	}
+
+	/**
+	 * Removes all debug objects (planes and helpers) from the scene.
+	 */
+	dispose() {
+
+		if ( this.scene ) {
+
+			for ( const mesh of this._debugMeshes ) {
+
+				mesh.geometry.dispose();
+				mesh.material.dispose();
+				this.scene.remove( mesh );
+
+			}
+
+			for ( const helper of this._shadowCamHelpers ) {
+
+				if ( helper ) {
+
+					this.scene.remove( helper );
+
+				}
+
+			}
+
+		}
+
+		this._debugMeshes = [];
+		this._shadowCamHelpers = [];
+
+	}
+
+}
+
+export { TileShadowNodeHelper };