MathNode: Add bitcast()

Author: sunag

examples/jsm/nodes/Nodes.js

@@ -39,7 +39,7 @@ import * as NodeUtils from './core/NodeUtils.js';
 export { NodeUtils };
 
 // math
-export { default as MathNode, EPSILON, INFINITY, radians, degrees, exp, exp2, log, log2, sqrt, inverseSqrt, floor, ceil, normalize, fract, sin, cos, tan, asin, acos, atan, abs, sign, length, negate, oneMinus, dFdx, dFdy, round, reciprocal, trunc, fwidth, atan2, min, max, mod, step, reflect, distance, difference, dot, cross, pow, pow2, pow3, pow4, transformDirection, mix, clamp, saturate, refract, smoothstep, faceForward } from './math/MathNode.js';
+export { default as MathNode, EPSILON, INFINITY, radians, degrees, exp, exp2, log, log2, sqrt, inverseSqrt, floor, ceil, normalize, fract, sin, cos, tan, asin, acos, atan, abs, sign, length, negate, oneMinus, dFdx, dFdy, round, reciprocal, trunc, fwidth, bitcast, atan2, min, max, mod, step, reflect, distance, difference, dot, cross, pow, pow2, pow3, pow4, transformDirection, mix, clamp, saturate, refract, smoothstep, faceForward } from './math/MathNode.js';
 export { default as OperatorNode, add, sub, mul, div, remainder, equal, lessThan, greaterThan, lessThanEqual, greaterThanEqual, and, or, xor, bitAnd, bitOr, bitXor, shiftLeft, shiftRight } from './math/OperatorNode.js';
 export { default as CondNode, cond } from './math/CondNode.js';
 export { default as HashNode, hash } from './math/HashNode.js';

examples/jsm/nodes/math/MathNode.js

@@ -220,6 +220,7 @@ MathNode.ROUND = 'round';
 MathNode.RECIPROCAL = 'reciprocal';
 MathNode.TRUNC = 'trunc';
 MathNode.FWIDTH = 'fwidth';
+MathNode.BITCAST = 'bitcast';
 
 // 2 inputs
 
@@ -278,6 +279,7 @@ export const round = nodeProxy( MathNode, MathNode.ROUND );
 export const reciprocal = nodeProxy( MathNode, MathNode.RECIPROCAL );
 export const trunc = nodeProxy( MathNode, MathNode.TRUNC );
 export const fwidth = nodeProxy( MathNode, MathNode.FWIDTH );
+export const bitcast = nodeProxy( MathNode, MathNode.BITCAST );
 
 export const atan2 = nodeProxy( MathNode, MathNode.ATAN2 );
 export const min = nodeProxy( MathNode, MathNode.MIN );

examples/jsm/renderers/webgpu/nodes/WGSLNodeBuilder.js

@@ -64,6 +64,7 @@ const wgslMethods = {
 	mod: 'threejs_mod',
 	lessThanEqual: 'threejs_lessThanEqual',
 	inversesqrt: 'inverseSqrt'
+	bitcast: 'bitcast<f32>'
 };
 
 const wgslPolyfill = {