最新代码

public/sdk/three/jsm/nodes/materialx/lib/mx_hsv.js

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+// Three.js Transpiler
+// https://github.com/AcademySoftwareFoundation/MaterialX/blob/main/libraries/stdlib/genglsl/lib/mx_hsv.glsl
+
+import { int, float, vec3, If, tslFn } from '../../shadernode/ShaderNode.js';
+import { add, sub, mul } from '../../math/OperatorNode.js';
+import { floor, trunc, max, min } from '../../math/MathNode.js';
+
+const mx_hsvtorgb = tslFn( ( [ hsv_immutable ] ) => {
+
+	const hsv = vec3( hsv_immutable ).toVar();
+	const h = float( hsv.x ).toVar();
+	const s = float( hsv.y ).toVar();
+	const v = float( hsv.z ).toVar();
+
+	If( s.lessThan( 0.0001 ), () => {
+
+		return vec3( v, v, v );
+
+	} ).else( () => {
+
+		h.assign( mul( 6.0, h.sub( floor( h ) ) ) );
+		const hi = int( trunc( h ) ).toVar();
+		const f = float( h.sub( float( hi ) ) ).toVar();
+		const p = float( v.mul( sub( 1.0, s ) ) ).toVar();
+		const q = float( v.mul( sub( 1.0, s.mul( f ) ) ) ).toVar();
+		const t = float( v.mul( sub( 1.0, s.mul( sub( 1.0, f ) ) ) ) ).toVar();
+
+		If( hi.equal( int( 0 ) ), () => {
+
+			return vec3( v, t, p );
+
+		} ).elseif( hi.equal( int( 1 ) ), () => {
+
+			return vec3( q, v, p );
+
+		} ).elseif( hi.equal( int( 2 ) ), () => {
+
+			return vec3( p, v, t );
+
+		} ).elseif( hi.equal( int( 3 ) ), () => {
+
+			return vec3( p, q, v );
+
+		} ).elseif( hi.equal( int( 4 ) ), () => {
+
+			return vec3( t, p, v );
+
+		} );
+
+		return vec3( v, p, q );
+
+	} );
+
+} );
+
+const mx_rgbtohsv = tslFn( ( [ c_immutable ] ) => {
+
+	const c = vec3( c_immutable ).toVar();
+	const r = float( c.x ).toVar();
+	const g = float( c.y ).toVar();
+	const b = float( c.z ).toVar();
+	const mincomp = float( min( r, min( g, b ) ) ).toVar();
+	const maxcomp = float( max( r, max( g, b ) ) ).toVar();
+	const delta = float( maxcomp.sub( mincomp ) ).toVar();
+	const h = float().toVar(), s = float().toVar(), v = float().toVar();
+	v.assign( maxcomp );
+
+	If( maxcomp.greaterThan( 0.0 ), () => {
+
+		s.assign( delta.div( maxcomp ) );
+
+	} ).else( () => {
+
+		s.assign( 0.0 );
+
+	} );
+
+	If( s.lessThanEqual( 0.0 ), () => {
+
+		h.assign( 0.0 );
+
+	} ).else( () => {
+
+		If( r.greaterThanEqual( maxcomp ), () => {
+
+			h.assign( g.sub( b ).div( delta ) );
+
+		} ).elseif( g.greaterThanEqual( maxcomp ), () => {
+
+			h.assign( add( 2.0, b.sub( r ).div( delta ) ) );
+
+		} ).else( () => {
+
+			h.assign( add( 4.0, r.sub( g ).div( delta ) ) );
+
+		} );
+
+		h.mulAssign( 1.0 / 6.0 );
+
+		If( h.lessThan( 0.0 ), () => {
+
+			h.addAssign( 1.0 );
+
+		} );
+
+	} );
+
+	return vec3( h, s, v );
+
+} );
+
+// layouts
+
+mx_hsvtorgb.setLayout( {
+	name: 'mx_hsvtorgb',
+	type: 'vec3',
+	inputs: [
+		{ name: 'hsv', type: 'vec3' }
+	]
+} );
+
+mx_rgbtohsv.setLayout( {
+	name: 'mx_rgbtohsv',
+	type: 'vec3',
+	inputs: [
+		{ name: 'c', type: 'vec3' }
+	]
+} );
+
+export { mx_hsvtorgb, mx_rgbtohsv };

public/sdk/three/jsm/nodes/materialx/lib/mx_transform_color.js

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+// Three.js Transpiler
+// https://github.com/AcademySoftwareFoundation/MaterialX/blob/main/libraries/stdlib/genglsl/lib/mx_transform_color.glsl
+
+import { bvec3, vec3, tslFn } from '../../shadernode/ShaderNode.js';
+import { greaterThan } from '../../math/OperatorNode.js';
+import { max, pow, mix } from '../../math/MathNode.js';
+
+const mx_srgb_texture_to_lin_rec709 = tslFn( ( [ color_immutable ] ) => {
+
+	const color = vec3( color_immutable ).toVar();
+	const isAbove = bvec3( greaterThan( color, vec3( 0.04045 ) ) ).toVar();
+	const linSeg = vec3( color.div( 12.92 ) ).toVar();
+	const powSeg = vec3( pow( max( color.add( vec3( 0.055 ) ), vec3( 0.0 ) ).div( 1.055 ), vec3( 2.4 ) ) ).toVar();
+
+	return mix( linSeg, powSeg, isAbove );
+
+} );
+
+// layouts
+
+mx_srgb_texture_to_lin_rec709.setLayout( {
+	name: 'mx_srgb_texture_to_lin_rec709',
+	type: 'vec3',
+	inputs: [
+		{ name: 'color', type: 'vec3' }
+	]
+} );
+
+export { mx_srgb_texture_to_lin_rec709 };