Updated builds.

build/three.cjs

@@ -2603,6 +2603,17 @@ class Vector4 {
 
 	}
 
+	divide( v ) {
+
+		this.x /= v.x;
+		this.y /= v.y;
+		this.z /= v.z;
+		this.w /= v.w;
+
+		return this;
+
+	}
+
 	divideScalar( scalar ) {
 
 		return this.multiplyScalar( 1 / scalar );
@@ -27149,18 +27160,14 @@ class WebXRManager extends EventDispatcher {
 		//
 
 		const cameraL = new PerspectiveCamera();
-		cameraL.layers.enable( 1 );
 		cameraL.viewport = new Vector4();
 
 		const cameraR = new PerspectiveCamera();
-		cameraR.layers.enable( 2 );
 		cameraR.viewport = new Vector4();
 
 		const cameras = [ cameraL, cameraR ];
 
 		const cameraXR = new ArrayCamera();
-		cameraXR.layers.enable( 1 );
-		cameraXR.layers.enable( 2 );
 
 		let _currentDepthNear = null;
 		let _currentDepthFar = null;
@@ -27670,6 +27677,10 @@ class WebXRManager extends EventDispatcher {
 
 			}
 
+			cameraL.layers.mask = camera.layers.mask | 0b010;
+			cameraR.layers.mask = camera.layers.mask | 0b100;
+			cameraXR.layers.mask = cameraL.layers.mask | cameraR.layers.mask;
+
 			const parent = camera.parent;
 			const cameras = cameraXR.cameras;
 

build/three.module.js

@@ -2601,6 +2601,17 @@ class Vector4 {
 
 	}
 
+	divide( v ) {
+
+		this.x /= v.x;
+		this.y /= v.y;
+		this.z /= v.z;
+		this.w /= v.w;
+
+		return this;
+
+	}
+
 	divideScalar( scalar ) {
 
 		return this.multiplyScalar( 1 / scalar );
@@ -27147,18 +27158,14 @@ class WebXRManager extends EventDispatcher {
 		//
 
 		const cameraL = new PerspectiveCamera();
-		cameraL.layers.enable( 1 );
 		cameraL.viewport = new Vector4();
 
 		const cameraR = new PerspectiveCamera();
-		cameraR.layers.enable( 2 );
 		cameraR.viewport = new Vector4();
 
 		const cameras = [ cameraL, cameraR ];
 
 		const cameraXR = new ArrayCamera();
-		cameraXR.layers.enable( 1 );
-		cameraXR.layers.enable( 2 );
 
 		let _currentDepthNear = null;
 		let _currentDepthFar = null;
@@ -27668,6 +27675,10 @@ class WebXRManager extends EventDispatcher {
 
 			}
 
+			cameraL.layers.mask = camera.layers.mask | 0b010;
+			cameraR.layers.mask = camera.layers.mask | 0b100;
+			cameraXR.layers.mask = cameraL.layers.mask | cameraR.layers.mask;
+
 			const parent = camera.parent;
 			const cameras = cameraXR.cameras;
 

build/three.webgpu.js

@@ -2540,6 +2540,17 @@ class Vector4 {
 
 	}
 
+	divide( v ) {
+
+		this.x /= v.x;
+		this.y /= v.y;
+		this.z /= v.z;
+		this.w /= v.w;
+
+		return this;
+
+	}
+
 	divideScalar( scalar ) {
 
 		return this.multiplyScalar( 1 / scalar );
@@ -45451,6 +45462,67 @@ const clipping = () => nodeObject( new ClippingNode() );
 
 const clippingAlpha = () => nodeObject( new ClippingNode( ClippingNode.ALPHA_TO_COVERAGE ) );
 
+/**
+ * See: https://casual-effects.com/research/Wyman2017Hashed/index.html
+ */
+
+const ALPHA_HASH_SCALE = 0.05; // Derived from trials only, and may be changed.
+
+const hash2D = /*@__PURE__*/ Fn( ( [ value ] ) => {
+
+	return fract( mul( 1.0e4, sin( mul( 17.0, value.x ).add( mul( 0.1, value.y ) ) ) ).mul( add( 0.1, abs( sin( mul( 13.0, value.y ).add( value.x ) ) ) ) ) );
+
+} );
+
+const hash3D = /*@__PURE__*/ Fn( ( [ value ] ) => {
+
+	return hash2D( vec2( hash2D( value.xy ), value.z ) );
+
+} );
+
+const getAlphaHashThreshold = /*@__PURE__*/ Fn( ( [ position ] ) => {
+
+	// Find the discretized derivatives of our coordinates
+	const maxDeriv = max$1(
+		length( dFdx( position.xyz ) ),
+		length( dFdy( position.xyz ) )
+	).toVar( 'maxDeriv' );
+
+	const pixScale = float( 1 ).div( float( ALPHA_HASH_SCALE ).mul( maxDeriv ) ).toVar( 'pixScale' );
+
+	// Find two nearest log-discretized noise scales
+	const pixScales = vec2(
+		exp2( floor( log2( pixScale ) ) ),
+		exp2( ceil( log2( pixScale ) ) )
+	).toVar( 'pixScales' );
+
+	// Compute alpha thresholds at our two noise scales
+	const alpha = vec2(
+		hash3D( floor( pixScales.x.mul( position.xyz ) ) ),
+		hash3D( floor( pixScales.y.mul( position.xyz ) ) ),
+	).toVar( 'alpha' );
+
+	// Factor to interpolate lerp with
+	const lerpFactor = fract( log2( pixScale ) ).toVar( 'lerpFactor' );
+
+	// Interpolate alpha threshold from noise at two scales
+	const x = add( mul( lerpFactor.oneMinus(), alpha.x ), mul( lerpFactor, alpha.y ) ).toVar( 'x' );
+
+	// Pass into CDF to compute uniformly distrib threshold
+	const a = min$1( lerpFactor, lerpFactor.oneMinus() ).toVar( 'a' );
+	const cases = vec3(
+		x.mul( x ).div( mul( 2.0, a ).mul( sub( 1.0, a ) ) ),
+		x.sub( mul( 0.5, a ) ).div( sub( 1.0, a ) ),
+		sub( 1.0, sub( 1.0, x ).mul( sub( 1.0, x ) ).div( mul( 2.0, a ).mul( sub( 1.0, a ) ) ) ) ).toVar( 'cases' );
+
+	// Find our final, uniformly distributed alpha threshold (ατ)
+	const threshold = x.lessThan( a.oneMinus() ).select( x.lessThan( a ).select( cases.x, cases.y ), cases.z );
+
+	// Avoids ατ == 0. Could also do ατ =1-ατ
+	return clamp( threshold, 1.0e-6, 1.0 );
+
+} );
+
 class NodeMaterial extends Material {
 
 	static get type() {
@@ -45795,6 +45867,14 @@ class NodeMaterial extends Material {
 
 		}
 
+		// ALPHA HASH
+
+		if ( this.alphaHash === true ) {
+
+			diffuseColor.a.lessThan( getAlphaHashThreshold( positionLocal ) ).discard();
+
+		}
+
 		if ( this.transparent === false && this.blending === NormalBlending && this.alphaToCoverage === false ) {
 
 			diffuseColor.a.assign( 1.0 );

build/three.webgpu.nodes.js

@@ -2540,6 +2540,17 @@ class Vector4 {
 
 	}
 
+	divide( v ) {
+
+		this.x /= v.x;
+		this.y /= v.y;
+		this.z /= v.z;
+		this.w /= v.w;
+
+		return this;
+
+	}
+
 	divideScalar( scalar ) {
 
 		return this.multiplyScalar( 1 / scalar );
@@ -45451,6 +45462,67 @@ const clipping = () => nodeObject( new ClippingNode() );
 
 const clippingAlpha = () => nodeObject( new ClippingNode( ClippingNode.ALPHA_TO_COVERAGE ) );
 
+/**
+ * See: https://casual-effects.com/research/Wyman2017Hashed/index.html
+ */
+
+const ALPHA_HASH_SCALE = 0.05; // Derived from trials only, and may be changed.
+
+const hash2D = /*@__PURE__*/ Fn( ( [ value ] ) => {
+
+	return fract( mul( 1.0e4, sin( mul( 17.0, value.x ).add( mul( 0.1, value.y ) ) ) ).mul( add( 0.1, abs( sin( mul( 13.0, value.y ).add( value.x ) ) ) ) ) );
+
+} );
+
+const hash3D = /*@__PURE__*/ Fn( ( [ value ] ) => {
+
+	return hash2D( vec2( hash2D( value.xy ), value.z ) );
+
+} );
+
+const getAlphaHashThreshold = /*@__PURE__*/ Fn( ( [ position ] ) => {
+
+	// Find the discretized derivatives of our coordinates
+	const maxDeriv = max$1(
+		length( dFdx( position.xyz ) ),
+		length( dFdy( position.xyz ) )
+	).toVar( 'maxDeriv' );
+
+	const pixScale = float( 1 ).div( float( ALPHA_HASH_SCALE ).mul( maxDeriv ) ).toVar( 'pixScale' );
+
+	// Find two nearest log-discretized noise scales
+	const pixScales = vec2(
+		exp2( floor( log2( pixScale ) ) ),
+		exp2( ceil( log2( pixScale ) ) )
+	).toVar( 'pixScales' );
+
+	// Compute alpha thresholds at our two noise scales
+	const alpha = vec2(
+		hash3D( floor( pixScales.x.mul( position.xyz ) ) ),
+		hash3D( floor( pixScales.y.mul( position.xyz ) ) ),
+	).toVar( 'alpha' );
+
+	// Factor to interpolate lerp with
+	const lerpFactor = fract( log2( pixScale ) ).toVar( 'lerpFactor' );
+
+	// Interpolate alpha threshold from noise at two scales
+	const x = add( mul( lerpFactor.oneMinus(), alpha.x ), mul( lerpFactor, alpha.y ) ).toVar( 'x' );
+
+	// Pass into CDF to compute uniformly distrib threshold
+	const a = min$1( lerpFactor, lerpFactor.oneMinus() ).toVar( 'a' );
+	const cases = vec3(
+		x.mul( x ).div( mul( 2.0, a ).mul( sub( 1.0, a ) ) ),
+		x.sub( mul( 0.5, a ) ).div( sub( 1.0, a ) ),
+		sub( 1.0, sub( 1.0, x ).mul( sub( 1.0, x ) ).div( mul( 2.0, a ).mul( sub( 1.0, a ) ) ) ) ).toVar( 'cases' );
+
+	// Find our final, uniformly distributed alpha threshold (ατ)
+	const threshold = x.lessThan( a.oneMinus() ).select( x.lessThan( a ).select( cases.x, cases.y ), cases.z );
+
+	// Avoids ατ == 0. Could also do ατ =1-ατ
+	return clamp( threshold, 1.0e-6, 1.0 );
+
+} );
+
 class NodeMaterial extends Material {
 
 	static get type() {
@@ -45795,6 +45867,14 @@ class NodeMaterial extends Material {
 
 		}
 
+		// ALPHA HASH
+
+		if ( this.alphaHash === true ) {
+
+			diffuseColor.a.lessThan( getAlphaHashThreshold( positionLocal ) ).discard();
+
+		}
+
 		if ( this.transparent === false && this.blending === NormalBlending && this.alphaToCoverage === false ) {
 
 			diffuseColor.a.assign( 1.0 );