Initial commit

node_modules/three/examples/jsm/nodes/display/BlendModeNode.js

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+import TempNode from '../core/TempNode.js';
+import { EPSILON } from '../math/MathNode.js';
+import { addNodeClass } from '../core/Node.js';
+import { addNodeElement, tslFn, nodeProxy, vec3 } from '../shadernode/ShaderNode.js';
+
+export const BurnNode = tslFn( ( { base, blend } ) => {
+
+	const fn = ( c ) => blend[ c ].lessThan( EPSILON ).cond( blend[ c ], base[ c ].oneMinus().div( blend[ c ] ).oneMinus().max( 0 ) );
+
+	return vec3( fn( 'x' ), fn( 'y' ), fn( 'z' ) );
+
+} );
+
+export const DodgeNode = tslFn( ( { base, blend } ) => {
+
+	const fn = ( c ) => blend[ c ].equal( 1.0 ).cond( blend[ c ], base[ c ].div( blend[ c ].oneMinus() ).max( 0 ) );
+
+	return vec3( fn( 'x' ), fn( 'y' ), fn( 'z' ) );
+
+} );
+
+export const ScreenNode = tslFn( ( { base, blend } ) => {
+
+	const fn = ( c ) => base[ c ].oneMinus().mul( blend[ c ].oneMinus() ).oneMinus();
+
+	return vec3( fn( 'x' ), fn( 'y' ), fn( 'z' ) );
+
+} );
+
+export const OverlayNode = tslFn( ( { base, blend } ) => {
+
+	const fn = ( c ) => base[ c ].lessThan( 0.5 ).cond( base[ c ].mul( blend[ c ], 2.0 ), base[ c ].oneMinus().mul( blend[ c ].oneMinus() ).oneMinus() );
+
+	return vec3( fn( 'x' ), fn( 'y' ), fn( 'z' ) );
+
+} );
+
+class BlendModeNode extends TempNode {
+
+	constructor( blendMode, baseNode, blendNode ) {
+
+		super();
+
+		this.blendMode = blendMode;
+
+		this.baseNode = baseNode;
+		this.blendNode = blendNode;
+
+	}
+
+	setup() {
+
+		const { blendMode, baseNode, blendNode } = this;
+		const params = { base: baseNode, blend: blendNode };
+
+		let outputNode = null;
+
+		if ( blendMode === BlendModeNode.BURN ) {
+
+			outputNode = BurnNode( params );
+
+		} else if ( blendMode === BlendModeNode.DODGE ) {
+
+			outputNode = DodgeNode( params );
+
+		} else if ( blendMode === BlendModeNode.SCREEN ) {
+
+			outputNode = ScreenNode( params );
+
+		} else if ( blendMode === BlendModeNode.OVERLAY ) {
+
+			outputNode = OverlayNode( params );
+
+		}
+
+		return outputNode;
+
+	}
+
+}
+
+BlendModeNode.BURN = 'burn';
+BlendModeNode.DODGE = 'dodge';
+BlendModeNode.SCREEN = 'screen';
+BlendModeNode.OVERLAY = 'overlay';
+
+export default BlendModeNode;
+
+export const burn = nodeProxy( BlendModeNode, BlendModeNode.BURN );
+export const dodge = nodeProxy( BlendModeNode, BlendModeNode.DODGE );
+export const overlay = nodeProxy( BlendModeNode, BlendModeNode.OVERLAY );
+export const screen = nodeProxy( BlendModeNode, BlendModeNode.SCREEN );
+
+addNodeElement( 'burn', burn );
+addNodeElement( 'dodge', dodge );
+addNodeElement( 'overlay', overlay );
+addNodeElement( 'screen', screen );
+
+addNodeClass( 'BlendModeNode', BlendModeNode );

node_modules/three/examples/jsm/nodes/display/BumpMapNode.js

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+import TempNode from '../core/TempNode.js';
+import { addNodeClass } from '../core/Node.js';
+import { uv } from '../accessors/UVNode.js';
+import { normalView } from '../accessors/NormalNode.js';
+import { positionView } from '../accessors/PositionNode.js';
+import { faceDirection } from './FrontFacingNode.js';
+import { addNodeElement, tslFn, nodeProxy, float, vec2 } from '../shadernode/ShaderNode.js';
+
+// Bump Mapping Unparametrized Surfaces on the GPU by Morten S. Mikkelsen
+// https://mmikk.github.io/papers3d/mm_sfgrad_bump.pdf
+
+// Evaluate the derivative of the height w.r.t. screen-space using forward differencing (listing 2)
+
+const dHdxy_fwd = tslFn( ( { textureNode, bumpScale } ) => {
+
+	let texNode = textureNode;
+
+	if ( texNode.isTextureNode !== true ) {
+
+		texNode.traverse( ( node ) => {
+
+			if ( node.isTextureNode === true ) texNode = node;
+
+		} );
+
+	}
+
+	if ( texNode.isTextureNode !== true ) {
+
+		throw new Error( 'THREE.TSL: dHdxy_fwd() requires a TextureNode.' );
+
+	}
+
+	const Hll = float( textureNode );
+	const uvNode = texNode.uvNode || uv();
+
+	// It's used to preserve the same TextureNode instance
+	const sampleTexture = ( uv ) => textureNode.cache().context( { getUVNode: () => uv, forceUVContext: true } );
+
+	return vec2(
+		float( sampleTexture( uvNode.add( uvNode.dFdx() ) ) ).sub( Hll ),
+		float( sampleTexture( uvNode.add( uvNode.dFdy() ) ) ).sub( Hll )
+	).mul( bumpScale );
+
+} );
+
+const perturbNormalArb = tslFn( ( inputs ) => {
+
+	const { surf_pos, surf_norm, dHdxy } = inputs;
+
+	// normalize is done to ensure that the bump map looks the same regardless of the texture's scale
+	const vSigmaX = surf_pos.dFdx().normalize();
+	const vSigmaY = surf_pos.dFdy().normalize();
+	const vN = surf_norm; // normalized
+
+	const R1 = vSigmaY.cross( vN );
+	const R2 = vN.cross( vSigmaX );
+
+	const fDet = vSigmaX.dot( R1 ).mul( faceDirection );
+
+	const vGrad = fDet.sign().mul( dHdxy.x.mul( R1 ).add( dHdxy.y.mul( R2 ) ) );
+
+	return fDet.abs().mul( surf_norm ).sub( vGrad ).normalize();
+
+} );
+
+class BumpMapNode extends TempNode {
+
+	constructor( textureNode, scaleNode = null ) {
+
+		super( 'vec3' );
+
+		this.textureNode = textureNode;
+		this.scaleNode = scaleNode;
+
+	}
+
+	setup() {
+
+		const bumpScale = this.scaleNode !== null ? this.scaleNode : 1;
+		const dHdxy = dHdxy_fwd( { textureNode: this.textureNode, bumpScale } );
+
+		return perturbNormalArb( {
+			surf_pos: positionView,
+			surf_norm: normalView,
+			dHdxy
+		} );
+
+	}
+
+}
+
+export default BumpMapNode;
+
+export const bumpMap = nodeProxy( BumpMapNode );
+
+addNodeElement( 'bumpMap', bumpMap );
+
+addNodeClass( 'BumpMapNode', BumpMapNode );

node_modules/three/examples/jsm/nodes/display/ColorAdjustmentNode.js

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+import TempNode from '../core/TempNode.js';
+import { dot, mix } from '../math/MathNode.js';
+import { add } from '../math/OperatorNode.js';
+import { addNodeClass } from '../core/Node.js';
+import { addNodeElement, tslFn, nodeProxy, float, vec3, mat3 } from '../shadernode/ShaderNode.js';
+
+const saturationNode = tslFn( ( { color, adjustment } ) => {
+
+	return adjustment.mix( luminance( color ), color );
+
+} );
+
+const vibranceNode = tslFn( ( { color, adjustment } ) => {
+
+	const average = add( color.r, color.g, color.b ).div( 3.0 );
+
+	const mx = color.r.max( color.g.max( color.b ) );
+	const amt = mx.sub( average ).mul( adjustment ).mul( - 3.0 );
+
+	return mix( color, mx, amt );
+
+} );
+
+const hueNode = tslFn( ( { color, adjustment } ) => {
+
+	const RGBtoYIQ = mat3( 0.299, 0.587, 0.114, 0.595716, - 0.274453, - 0.321263, 0.211456, - 0.522591, 0.311135 );
+	const YIQtoRGB = mat3( 1.0, 0.9563, 0.6210, 1.0, - 0.2721, - 0.6474, 1.0, - 1.107, 1.7046 );
+
+	const yiq = RGBtoYIQ.mul( color );
+
+	const hue = yiq.z.atan2( yiq.y ).add( adjustment );
+	const chroma = yiq.yz.length();
+
+	return YIQtoRGB.mul( vec3( yiq.x, chroma.mul( hue.cos() ), chroma.mul( hue.sin() ) ) );
+
+} );
+
+class ColorAdjustmentNode extends TempNode {
+
+	constructor( method, colorNode, adjustmentNode = float( 1 ) ) {
+
+		super( 'vec3' );
+
+		this.method = method;
+
+		this.colorNode = colorNode;
+		this.adjustmentNode = adjustmentNode;
+
+	}
+
+	setup() {
+
+		const { method, colorNode, adjustmentNode } = this;
+
+		const callParams = { color: colorNode, adjustment: adjustmentNode };
+
+		let outputNode = null;
+
+		if ( method === ColorAdjustmentNode.SATURATION ) {
+
+			outputNode = saturationNode( callParams );
+
+		} else if ( method === ColorAdjustmentNode.VIBRANCE ) {
+
+			outputNode = vibranceNode( callParams );
+
+		} else if ( method === ColorAdjustmentNode.HUE ) {
+
+			outputNode = hueNode( callParams );
+
+		} else {
+
+			console.error( `${ this.type }: Method "${ this.method }" not supported!` );
+
+		}
+
+		return outputNode;
+
+	}
+
+}
+
+ColorAdjustmentNode.SATURATION = 'saturation';
+ColorAdjustmentNode.VIBRANCE = 'vibrance';
+ColorAdjustmentNode.HUE = 'hue';
+
+export default ColorAdjustmentNode;
+
+export const saturation = nodeProxy( ColorAdjustmentNode, ColorAdjustmentNode.SATURATION );
+export const vibrance = nodeProxy( ColorAdjustmentNode, ColorAdjustmentNode.VIBRANCE );
+export const hue = nodeProxy( ColorAdjustmentNode, ColorAdjustmentNode.HUE );
+
+export const lumaCoeffs = vec3( 0.2125, 0.7154, 0.0721 );
+export const luminance = ( color, luma = lumaCoeffs ) => dot( color, luma );
+
+addNodeElement( 'saturation', saturation );
+addNodeElement( 'vibrance', vibrance );
+addNodeElement( 'hue', hue );
+
+addNodeClass( 'ColorAdjustmentNode', ColorAdjustmentNode );

node_modules/three/examples/jsm/nodes/display/ColorSpaceNode.js

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+import TempNode from '../core/TempNode.js';
+import { mix } from '../math/MathNode.js';
+import { addNodeClass } from '../core/Node.js';
+import { addNodeElement, tslFn, nodeObject, nodeProxy, vec4 } from '../shadernode/ShaderNode.js';
+
+import { LinearSRGBColorSpace, SRGBColorSpace } from 'three';
+
+const sRGBToLinearShader = tslFn( ( inputs ) => {
+
+	const { value } = inputs;
+	const { rgb } = value;
+
+	const a = rgb.mul( 0.9478672986 ).add( 0.0521327014 ).pow( 2.4 );
+	const b = rgb.mul( 0.0773993808 );
+	const factor = rgb.lessThanEqual( 0.04045 );
+
+	const rgbResult = mix( a, b, factor );
+
+	return vec4( rgbResult, value.a );
+
+} );
+
+const LinearTosRGBShader = tslFn( ( inputs ) => {
+
+	const { value } = inputs;
+	const { rgb } = value;
+
+	const a = rgb.pow( 0.41666 ).mul( 1.055 ).sub( 0.055 );
+	const b = rgb.mul( 12.92 );
+	const factor = rgb.lessThanEqual( 0.0031308 );
+
+	const rgbResult = mix( a, b, factor );
+
+	return vec4( rgbResult, value.a );
+
+} );
+
+const getColorSpaceMethod = ( colorSpace ) => {
+
+	let method = null;
+
+	if ( colorSpace === LinearSRGBColorSpace ) {
+
+		method = 'Linear';
+
+	} else if ( colorSpace === SRGBColorSpace ) {
+
+		method = 'sRGB';
+
+	}
+
+	return method;
+
+};
+
+const getMethod = ( source, target ) => {
+
+	return getColorSpaceMethod( source ) + 'To' + getColorSpaceMethod( target );
+
+};
+
+class ColorSpaceNode extends TempNode {
+
+	constructor( method, node ) {
+
+		super( 'vec4' );
+
+		this.method = method;
+		this.node = node;
+
+	}
+
+	setup() {
+
+		const { method, node } = this;
+
+		if ( method === ColorSpaceNode.LINEAR_TO_LINEAR )
+			return node;
+
+		return Methods[ method ]( { value: node } );
+
+	}
+
+}
+
+ColorSpaceNode.LINEAR_TO_LINEAR = 'LinearToLinear';
+ColorSpaceNode.LINEAR_TO_sRGB = 'LinearTosRGB';
+ColorSpaceNode.sRGB_TO_LINEAR = 'sRGBToLinear';
+
+const Methods = {
+	[ ColorSpaceNode.LINEAR_TO_sRGB ]: LinearTosRGBShader,
+	[ ColorSpaceNode.sRGB_TO_LINEAR ]: sRGBToLinearShader
+};
+
+export default ColorSpaceNode;
+
+export const linearToColorSpace = ( node, colorSpace ) => nodeObject( new ColorSpaceNode( getMethod( LinearSRGBColorSpace, colorSpace ), nodeObject( node ) ) );
+export const colorSpaceToLinear = ( node, colorSpace ) => nodeObject( new ColorSpaceNode( getMethod( colorSpace, LinearSRGBColorSpace ), nodeObject( node ) ) );
+
+export const linearTosRGB = nodeProxy( ColorSpaceNode, ColorSpaceNode.LINEAR_TO_sRGB );
+export const sRGBToLinear = nodeProxy( ColorSpaceNode, ColorSpaceNode.sRGB_TO_LINEAR );
+
+addNodeElement( 'linearTosRGB', linearTosRGB );
+addNodeElement( 'sRGBToLinear', sRGBToLinear );
+addNodeElement( 'linearToColorSpace', linearToColorSpace );
+addNodeElement( 'colorSpaceToLinear', colorSpaceToLinear );
+
+addNodeClass( 'ColorSpaceNode', ColorSpaceNode );

node_modules/three/examples/jsm/nodes/display/FrontFacingNode.js

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+import Node, { addNodeClass } from '../core/Node.js';
+import { nodeImmutable, float } from '../shadernode/ShaderNode.js';
+
+class FrontFacingNode extends Node {
+
+	constructor() {
+
+		super( 'bool' );
+
+		this.isFrontFacingNode = true;
+
+	}
+
+	generate( builder ) {
+
+		return builder.getFrontFacing();
+
+	}
+
+}
+
+export default FrontFacingNode;
+
+export const frontFacing = nodeImmutable( FrontFacingNode );
+export const faceDirection = float( frontFacing ).mul( 2.0 ).sub( 1.0 );
+
+addNodeClass( 'FrontFacingNode', FrontFacingNode );

node_modules/three/examples/jsm/nodes/display/NormalMapNode.js

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+import TempNode from '../core/TempNode.js';
+import { add } from '../math/OperatorNode.js';
+import { bitangentView } from '../accessors/BitangentNode.js';
+import { modelNormalMatrix } from '../accessors/ModelNode.js';
+import { normalView } from '../accessors/NormalNode.js';
+import { positionView } from '../accessors/PositionNode.js';
+import { tangentView } from '../accessors/TangentNode.js';
+import { uv } from '../accessors/UVNode.js';
+import { faceDirection } from './FrontFacingNode.js';
+import { addNodeClass } from '../core/Node.js';
+import { addNodeElement, tslFn, nodeProxy, vec3, mat3 } from '../shadernode/ShaderNode.js';
+
+import { TangentSpaceNormalMap, ObjectSpaceNormalMap } from 'three';
+
+// Normal Mapping Without Precomputed Tangents
+// http://www.thetenthplanet.de/archives/1180
+
+const perturbNormal2Arb = tslFn( ( inputs ) => {
+
+	const { eye_pos, surf_norm, mapN, uv } = inputs;
+
+	const q0 = eye_pos.dFdx();
+	const q1 = eye_pos.dFdy();
+	const st0 = uv.dFdx();
+	const st1 = uv.dFdy();
+
+	const N = surf_norm; // normalized
+
+	const q1perp = q1.cross( N );
+	const q0perp = N.cross( q0 );
+
+	const T = q1perp.mul( st0.x ).add( q0perp.mul( st1.x ) );
+	const B = q1perp.mul( st0.y ).add( q0perp.mul( st1.y ) );
+
+	const det = T.dot( T ).max( B.dot( B ) );
+	const scale = faceDirection.mul( det.inverseSqrt() );
+
+	return add( T.mul( mapN.x, scale ), B.mul( mapN.y, scale ), N.mul( mapN.z ) ).normalize();
+
+} );
+
+class NormalMapNode extends TempNode {
+
+	constructor( node, scaleNode = null ) {
+
+		super( 'vec3' );
+
+		this.node = node;
+		this.scaleNode = scaleNode;
+
+		this.normalMapType = TangentSpaceNormalMap;
+
+	}
+
+	setup( builder ) {
+
+		const { normalMapType, scaleNode } = this;
+
+		let normalMap = this.node.mul( 2.0 ).sub( 1.0 );
+
+		if ( scaleNode !== null ) {
+
+			normalMap = vec3( normalMap.xy.mul( scaleNode ), normalMap.z );
+
+		}
+
+		let outputNode = null;
+
+		if ( normalMapType === ObjectSpaceNormalMap ) {
+
+			outputNode = modelNormalMatrix.mul( normalMap ).normalize();
+
+		} else if ( normalMapType === TangentSpaceNormalMap ) {
+
+			const tangent = builder.hasGeometryAttribute( 'tangent' );
+
+			if ( tangent === true ) {
+
+				outputNode = TBNViewMatrix.mul( normalMap ).normalize();
+
+			} else {
+
+				outputNode = perturbNormal2Arb( {
+					eye_pos: positionView,
+					surf_norm: normalView,
+					mapN: normalMap,
+					uv: uv()
+				} );
+
+			}
+
+		}
+
+		return outputNode;
+
+	}
+
+}
+
+export default NormalMapNode;
+
+export const normalMap = nodeProxy( NormalMapNode );
+
+export const TBNViewMatrix = mat3( tangentView, bitangentView, normalView );
+
+addNodeElement( 'normalMap', normalMap );
+
+addNodeClass( 'NormalMapNode', NormalMapNode );

node_modules/three/examples/jsm/nodes/display/PosterizeNode.js

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+import TempNode from '../core/TempNode.js';
+import { addNodeClass } from '../core/Node.js';
+import { addNodeElement, nodeProxy } from '../shadernode/ShaderNode.js';
+
+class PosterizeNode extends TempNode {
+
+	constructor( sourceNode, stepsNode ) {
+
+		super();
+
+		this.sourceNode = sourceNode;
+		this.stepsNode = stepsNode;
+
+	}
+
+	setup() {
+
+		const { sourceNode, stepsNode } = this;
+
+		return sourceNode.mul( stepsNode ).floor().div( stepsNode );
+
+	}
+
+}
+
+export default PosterizeNode;
+
+export const posterize = nodeProxy( PosterizeNode );
+
+addNodeElement( 'posterize', posterize );
+
+addNodeClass( 'PosterizeNode', PosterizeNode );

node_modules/three/examples/jsm/nodes/display/ToneMappingNode.js

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+import TempNode from '../core/TempNode.js';
+import { addNodeClass } from '../core/Node.js';
+import { tslFn, nodeObject, float, mat3 } from '../shadernode/ShaderNode.js';
+
+import { NoToneMapping, LinearToneMapping, ReinhardToneMapping, CineonToneMapping, ACESFilmicToneMapping } from 'three';
+
+// exposure only
+const LinearToneMappingNode = tslFn( ( { color, exposure } ) => {
+
+	return color.mul( exposure ).clamp();
+
+} );
+
+// source: https://www.cs.utah.edu/docs/techreports/2002/pdf/UUCS-02-001.pdf
+const ReinhardToneMappingNode = tslFn( ( { color, exposure } ) => {
+
+	color = color.mul( exposure );
+
+	return color.div( color.add( 1.0 ) ).clamp();
+
+} );
+
+// source: http://filmicworlds.com/blog/filmic-tonemapping-operators/
+const OptimizedCineonToneMappingNode = tslFn( ( { color, exposure } ) => {
+
+	// optimized filmic operator by Jim Hejl and Richard Burgess-Dawson
+	color = color.mul( exposure );
+	color = color.sub( 0.004 ).max( 0.0 );
+
+	const a = color.mul( color.mul( 6.2 ).add( 0.5 ) );
+	const b = color.mul( color.mul( 6.2 ).add( 1.7 ) ).add( 0.06 );
+
+	return a.div( b ).pow( 2.2 );
+
+} );
+
+// source: https://github.com/selfshadow/ltc_code/blob/master/webgl/shaders/ltc/ltc_blit.fs
+const RRTAndODTFit = tslFn( ( { color } ) => {
+
+	const a = color.mul( color.add( 0.0245786 ) ).sub( 0.000090537 );
+	const b = color.mul( color.add( 0.4329510 ).mul( 0.983729 ) ).add( 0.238081 );
+
+	return a.div( b );
+
+} );
+
+// source: https://github.com/selfshadow/ltc_code/blob/master/webgl/shaders/ltc/ltc_blit.fs
+const ACESFilmicToneMappingNode = tslFn( ( { color, exposure } ) => {
+
+	// sRGB => XYZ => D65_2_D60 => AP1 => RRT_SAT
+	const ACESInputMat = mat3(
+		0.59719, 0.35458, 0.04823,
+		0.07600, 0.90834, 0.01566,
+		0.02840, 0.13383, 0.83777
+	);
+
+	// ODT_SAT => XYZ => D60_2_D65 => sRGB
+	const ACESOutputMat = mat3(
+		1.60475, - 0.53108, - 0.07367,
+		- 0.10208, 1.10813, - 0.00605,
+		- 0.00327, - 0.07276, 1.07602
+	);
+
+	color = color.mul( exposure ).div( 0.6 );
+
+	color = ACESInputMat.mul( color );
+
+	// Apply RRT and ODT
+	color = RRTAndODTFit( { color } );
+
+	color = ACESOutputMat.mul( color );
+
+	// Clamp to [0, 1]
+	return color.clamp();
+
+} );
+
+const toneMappingLib = {
+	[ LinearToneMapping ]: LinearToneMappingNode,
+	[ ReinhardToneMapping ]: ReinhardToneMappingNode,
+	[ CineonToneMapping ]: OptimizedCineonToneMappingNode,
+	[ ACESFilmicToneMapping ]: ACESFilmicToneMappingNode
+};
+
+class ToneMappingNode extends TempNode {
+
+	constructor( toneMapping = NoToneMapping, exposureNode = float( 1 ), colorNode = null ) {
+
+		super( 'vec3' );
+
+		this.toneMapping = toneMapping;
+
+		this.exposureNode = exposureNode;
+		this.colorNode = colorNode;
+
+	}
+
+	getCacheKey() {
+
+		let cacheKey = super.getCacheKey();
+		cacheKey = '{toneMapping:' + this.toneMapping + ',nodes:' + cacheKey + '}';
+
+		return cacheKey;
+
+	}
+
+	setup( builder ) {
+
+		const colorNode = this.colorNode || builder.context.color;
+		const toneMapping = this.toneMapping;
+
+		if ( toneMapping === NoToneMapping ) return colorNode;
+
+		const toneMappingParams = { exposure: this.exposureNode, color: colorNode };
+		const toneMappingNode = toneMappingLib[ toneMapping ];
+
+		let outputNode = null;
+
+		if ( toneMappingNode ) {
+
+			outputNode = toneMappingNode( toneMappingParams );
+
+		} else {
+
+			console.error( 'ToneMappingNode: Unsupported Tone Mapping configuration.', toneMapping );
+
+			outputNode = colorNode;
+
+		}
+
+		return outputNode;
+
+	}
+
+}
+
+export default ToneMappingNode;
+
+export const toneMapping = ( mapping, exposure, color ) => nodeObject( new ToneMappingNode( mapping, nodeObject( exposure ), nodeObject( color ) ) );
+
+addNodeClass( 'ToneMappingNode', ToneMappingNode );

node_modules/three/examples/jsm/nodes/display/ViewportDepthNode.js

@@ -0,0 +1,69 @@
+import Node, { addNodeClass } from '../core/Node.js';
+import { nodeImmutable, nodeProxy } from '../shadernode/ShaderNode.js';
+import { cameraNear, cameraFar } from '../accessors/CameraNode.js';
+import { positionView } from '../accessors/PositionNode.js';
+import { viewportDepthTexture } from './ViewportDepthTextureNode.js';
+
+class ViewportDepthNode extends Node {
+
+	constructor( scope, textureNode = null ) {
+
+		super( 'float' );
+
+		this.scope = scope;
+		this.textureNode = textureNode;
+
+		this.isViewportDepthNode = true;
+
+	}
+
+	setup( /*builder*/ ) {
+
+		const { scope } = this;
+
+		let node = null;
+
+		if ( scope === ViewportDepthNode.DEPTH ) {
+
+			node = viewZToOrthographicDepth( positionView.z, cameraNear, cameraFar );
+
+		} else if ( scope === ViewportDepthNode.DEPTH_TEXTURE ) {
+
+			const texture = this.textureNode || viewportDepthTexture();
+
+			const viewZ = perspectiveDepthToViewZ( texture, cameraNear, cameraFar );
+			node = viewZToOrthographicDepth( viewZ, cameraNear, cameraFar );
+
+		}
+
+		return node;
+
+	}
+
+}
+
+// NOTE: viewZ, the z-coordinate in camera space, is negative for points in front of the camera
+
+// -near maps to 0; -far maps to 1
+export const viewZToOrthographicDepth = ( viewZ, near, far ) => viewZ.add( near ).div( near.sub( far ) );
+
+// maps orthographic depth in [ 0, 1 ] to viewZ
+export const orthographicDepthToViewZ = ( depth, near, far ) => near.sub( far ).mul( depth ).sub( near );
+
+// NOTE: https://twitter.com/gonnavis/status/1377183786949959682
+
+// -near maps to 0; -far maps to 1
+export const viewZToPerspectiveDepth = ( viewZ, near, far ) => near.add( viewZ ).mul( far ).div( near.sub( far ).mul( viewZ ) );
+
+// maps perspective depth in [ 0, 1 ] to viewZ
+export const perspectiveDepthToViewZ = ( depth, near, far ) => near.mul( far ).div( far.sub( near ).mul( depth ).sub( far ) );
+
+ViewportDepthNode.DEPTH = 'depth';
+ViewportDepthNode.DEPTH_TEXTURE = 'depthTexture';
+
+export default ViewportDepthNode;
+
+export const depth = nodeImmutable( ViewportDepthNode, ViewportDepthNode.DEPTH );
+export const depthTexture = nodeProxy( ViewportDepthNode, ViewportDepthNode.DEPTH_TEXTURE );
+
+addNodeClass( 'ViewportDepthNode', ViewportDepthNode );

node_modules/three/examples/jsm/nodes/display/ViewportDepthTextureNode.js

@@ -0,0 +1,34 @@
+import ViewportTextureNode from './ViewportTextureNode.js';
+import { addNodeClass } from '../core/Node.js';
+import { addNodeElement, nodeProxy } from '../shadernode/ShaderNode.js';
+import { viewportTopLeft } from './ViewportNode.js';
+import { DepthTexture, LinearMipmapLinearFilter, DepthFormat, UnsignedIntType } from 'three';
+
+let sharedDepthbuffer = null;
+
+class ViewportDepthTextureNode extends ViewportTextureNode {
+
+	constructor( uvNode = viewportTopLeft, levelNode = null ) {
+
+		if ( sharedDepthbuffer === null ) {
+
+			sharedDepthbuffer = new DepthTexture();
+			sharedDepthbuffer.minFilter = LinearMipmapLinearFilter;
+			sharedDepthbuffer.type = UnsignedIntType;
+			sharedDepthbuffer.format = DepthFormat;
+
+		}
+
+		super( uvNode, levelNode, sharedDepthbuffer );
+
+	}
+
+}
+
+export default ViewportDepthTextureNode;
+
+export const viewportDepthTexture = nodeProxy( ViewportDepthTextureNode );
+
+addNodeElement( 'viewportDepthTexture', viewportDepthTexture );
+
+addNodeClass( 'ViewportDepthTextureNode', ViewportDepthTextureNode );

node_modules/three/examples/jsm/nodes/display/ViewportNode.js

@@ -0,0 +1,139 @@
+import Node, { addNodeClass } from '../core/Node.js';
+import { NodeUpdateType } from '../core/constants.js';
+import { uniform } from '../core/UniformNode.js';
+import { nodeImmutable, vec2 } from '../shadernode/ShaderNode.js';
+
+import { Vector2, Vector4 } from 'three';
+
+let resolution, viewportResult;
+
+class ViewportNode extends Node {
+
+	constructor( scope ) {
+
+		super();
+
+		this.scope = scope;
+
+		this.isViewportNode = true;
+
+	}
+
+	getNodeType() {
+
+		return this.scope === ViewportNode.COORDINATE || this.scope === ViewportNode.VIEWPORT ? 'vec4' : 'vec2';
+
+	}
+
+	getUpdateType() {
+
+		let updateType = NodeUpdateType.NONE;
+
+		if ( this.scope === ViewportNode.RESOLUTION || this.scope === ViewportNode.VIEWPORT ) {
+
+			updateType = NodeUpdateType.FRAME;
+
+		}
+
+		this.updateType = updateType;
+
+		return updateType;
+
+	}
+
+	update( { renderer } ) {
+
+		if ( this.scope === ViewportNode.VIEWPORT ) {
+
+			renderer.getViewport( viewportResult );
+
+		} else {
+
+			renderer.getDrawingBufferSize( resolution );
+
+		}
+
+	}
+
+	setup( builder ) {
+
+		const scope = this.scope;
+
+		if ( scope === ViewportNode.COORDINATE ) return;
+
+		let output = null;
+
+		if ( scope === ViewportNode.RESOLUTION ) {
+
+			output = uniform( resolution || ( resolution = new Vector2() ) );
+
+		} else if ( scope === ViewportNode.VIEWPORT ) {
+
+			output = uniform( viewportResult || ( viewportResult = new Vector4() ) );
+
+		} else {
+
+			const coordinateNode = vec2( new ViewportNode( ViewportNode.COORDINATE ) );
+			const resolutionNode = new ViewportNode( ViewportNode.RESOLUTION );
+
+			output = coordinateNode.div( resolutionNode );
+
+			let outX = output.x;
+			let outY = output.y;
+
+			if ( /bottom/i.test( scope ) ) outY = outY.oneMinus();
+			if ( /right/i.test( scope ) ) outX = outX.oneMinus();
+
+			output = vec2( outX, outY );
+
+		}
+
+		return output;
+
+	}
+
+	generate( builder ) {
+
+		if ( this.scope === ViewportNode.COORDINATE ) {
+
+			let coord = builder.getFragCoord();
+
+			if ( builder.isFlipY() ) {
+
+				// follow webgpu standards
+
+				const resolution = viewportResolution.build( builder );
+
+				coord = `${ builder.getType( 'vec2' ) }( ${ coord }.x, ${ resolution}.y - ${ coord }.y )`;
+
+			}
+
+			return coord;
+
+		}
+
+		return super.generate( builder );
+
+	}
+
+}
+
+ViewportNode.COORDINATE = 'coordinate';
+ViewportNode.RESOLUTION = 'resolution';
+ViewportNode.VIEWPORT = 'viewport';
+ViewportNode.TOP_LEFT = 'topLeft';
+ViewportNode.BOTTOM_LEFT = 'bottomLeft';
+ViewportNode.TOP_RIGHT = 'topRight';
+ViewportNode.BOTTOM_RIGHT = 'bottomRight';
+
+export default ViewportNode;
+
+export const viewportCoordinate = nodeImmutable( ViewportNode, ViewportNode.COORDINATE );
+export const viewportResolution = nodeImmutable( ViewportNode, ViewportNode.RESOLUTION );
+export const viewport = nodeImmutable( ViewportNode, ViewportNode.VIEWPORT );
+export const viewportTopLeft = nodeImmutable( ViewportNode, ViewportNode.TOP_LEFT );
+export const viewportBottomLeft = nodeImmutable( ViewportNode, ViewportNode.BOTTOM_LEFT );
+export const viewportTopRight = nodeImmutable( ViewportNode, ViewportNode.TOP_RIGHT );
+export const viewportBottomRight = nodeImmutable( ViewportNode, ViewportNode.BOTTOM_RIGHT );
+
+addNodeClass( 'ViewportNode', ViewportNode );

node_modules/three/examples/jsm/nodes/display/ViewportSharedTextureNode.js

@@ -0,0 +1,31 @@
+import ViewportTextureNode from './ViewportTextureNode.js';
+import { addNodeClass } from '../core/Node.js';
+import { addNodeElement, nodeProxy } from '../shadernode/ShaderNode.js';
+import { viewportTopLeft } from './ViewportNode.js';
+import { FramebufferTexture } from 'three';
+
+let sharedFramebuffer = null;
+
+class ViewportSharedTextureNode extends ViewportTextureNode {
+
+	constructor( uvNode = viewportTopLeft, levelNode = null ) {
+
+		if ( sharedFramebuffer === null ) {
+
+			sharedFramebuffer = new FramebufferTexture();
+
+		}
+
+		super( uvNode, levelNode, sharedFramebuffer );
+
+	}
+
+}
+
+export default ViewportSharedTextureNode;
+
+export const viewportSharedTexture = nodeProxy( ViewportSharedTextureNode );
+
+addNodeElement( 'viewportSharedTexture', viewportSharedTexture );
+
+addNodeClass( 'ViewportSharedTextureNode', ViewportSharedTextureNode );

node_modules/three/examples/jsm/nodes/display/ViewportTextureNode.js

@@ -0,0 +1,75 @@
+import TextureNode from '../accessors/TextureNode.js';
+import { NodeUpdateType } from '../core/constants.js';
+import { addNodeClass } from '../core/Node.js';
+import { addNodeElement, nodeProxy } from '../shadernode/ShaderNode.js';
+import { viewportTopLeft } from './ViewportNode.js';
+import { Vector2, FramebufferTexture, LinearMipmapLinearFilter } from 'three';
+
+const _size = new Vector2();
+
+class ViewportTextureNode extends TextureNode {
+
+	constructor( uvNode = viewportTopLeft, levelNode = null, framebufferTexture = null ) {
+
+		if ( framebufferTexture === null ) {
+
+			framebufferTexture = new FramebufferTexture();
+			framebufferTexture.minFilter = LinearMipmapLinearFilter;
+
+		}
+
+		super( framebufferTexture, uvNode, levelNode );
+
+		this.generateMipmaps = false;
+
+		this.isOutputTextureNode = true;
+
+		this.updateBeforeType = NodeUpdateType.FRAME;
+
+	}
+
+	updateBefore( frame ) {
+
+		const renderer = frame.renderer;
+		renderer.getDrawingBufferSize( _size );
+
+		//
+
+		const framebufferTexture = this.value;
+
+		if ( framebufferTexture.image.width !== _size.width || framebufferTexture.image.height !== _size.height ) {
+
+			framebufferTexture.image.width = _size.width;
+			framebufferTexture.image.height = _size.height;
+			framebufferTexture.needsUpdate = true;
+
+		}
+
+		//
+
+		const currentGenerateMipmaps = framebufferTexture.generateMipmaps;
+		framebufferTexture.generateMipmaps = this.generateMipmaps;
+
+		renderer.copyFramebufferToTexture( framebufferTexture );
+
+		framebufferTexture.generateMipmaps = currentGenerateMipmaps;
+
+	}
+
+	clone() {
+
+		return new this.constructor( this.uvNode, this.levelNode, this.value );
+
+	}
+
+}
+
+export default ViewportTextureNode;
+
+export const viewportTexture = nodeProxy( ViewportTextureNode );
+export const viewportMipTexture = nodeProxy( ViewportTextureNode, null, null, { generateMipmaps: true } );
+
+addNodeElement( 'viewportTexture', viewportTexture );
+addNodeElement( 'viewportMipTexture', viewportMipTexture );
+
+addNodeClass( 'ViewportTextureNode', ViewportTextureNode );