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node_modules/three/examples/jsm/nodes/materialx/DISCLAIMER.md generated vendored Normal file
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## MaterialX
MaterialX is a project of the
[Academy Software Foundation](https://www.aswf.io/) and relies on the ASWF
governance policies, supported by the Linux Foundation.
<https://github.com/AcademySoftwareFoundation/MaterialX>
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
<http://www.apache.org/licenses/LICENSE-2.0>
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
```
-------------------------------------------------------------------------
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http://www.apache.org/licenses/
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```

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node_modules/three/examples/jsm/nodes/materialx/MaterialXNodes.js generated vendored Normal file
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import {
mx_perlin_noise_float, mx_perlin_noise_vec2, mx_perlin_noise_vec3,
mx_worley_noise_float as worley_noise_float, mx_worley_noise_vec2 as worley_noise_vec2, mx_worley_noise_vec3 as worley_noise_vec3,
mx_cell_noise_float as cell_noise_float,
mx_fractal_noise_float as fractal_noise_float, mx_fractal_noise_vec2 as fractal_noise_vec2, mx_fractal_noise_vec3 as fractal_noise_vec3, mx_fractal_noise_vec4 as fractal_noise_vec4
} from './lib/mx_noise.js';
import { mx_hsvtorgb, mx_rgbtohsv } from './lib/mx_hsv.js';
import { mx_srgb_texture_to_lin_rec709 } from './lib/mx_transform_color.js';
import { mix, smoothstep } from '../math/MathNode.js';
import { uv } from '../accessors/UVNode.js';
import { float, vec2, vec4 } from '../shadernode/ShaderNode.js';
export const mx_aastep = ( threshold, value ) => {
threshold = float( threshold );
value = float( value );
const afwidth = vec2( value.dFdx(), value.dFdy() ).length().mul( 0.70710678118654757 );
return smoothstep( threshold.sub( afwidth ), threshold.add( afwidth ), value );
};
const _ramp = ( a, b, uv, p ) => mix( a, b, uv[ p ].clamp() );
export const mx_ramplr = ( valuel, valuer, texcoord = uv() ) => _ramp( valuel, valuer, texcoord, 'x' );
export const mx_ramptb = ( valuet, valueb, texcoord = uv() ) => _ramp( valuet, valueb, texcoord, 'y' );
const _split = ( a, b, center, uv, p ) => mix( a, b, mx_aastep( center, uv[ p ] ) );
export const mx_splitlr = ( valuel, valuer, center, texcoord = uv() ) => _split( valuel, valuer, center, texcoord, 'x' );
export const mx_splittb = ( valuet, valueb, center, texcoord = uv() ) => _split( valuet, valueb, center, texcoord, 'y' );
export const mx_transform_uv = ( uv_scale = 1, uv_offset = 0, uv_geo = uv() ) => uv_geo.mul( uv_scale ).add( uv_offset );
export const mx_safepower = ( in1, in2 = 1 ) => {
in1 = float( in1 );
return in1.abs().pow( in2 ).mul( in1.sign() );
};
export const mx_contrast = ( input, amount = 1, pivot = .5 ) => float( input ).sub( pivot ).mul( amount ).add( pivot );
export const mx_noise_float = ( texcoord = uv(), amplitude = 1, pivot = 0 ) => mx_perlin_noise_float( texcoord.convert( 'vec2|vec3' ) ).mul( amplitude ).add( pivot );
export const mx_noise_vec2 = ( texcoord = uv(), amplitude = 1, pivot = 0 ) => mx_perlin_noise_vec2( texcoord.convert( 'vec2|vec3' ) ).mul( amplitude ).add( pivot );
export const mx_noise_vec3 = ( texcoord = uv(), amplitude = 1, pivot = 0 ) => mx_perlin_noise_vec3( texcoord.convert( 'vec2|vec3' ) ).mul( amplitude ).add( pivot );
export const mx_noise_vec4 = ( texcoord = uv(), amplitude = 1, pivot = 0 ) => {
texcoord = texcoord.convert( 'vec2|vec3' ); // overloading type
const noise_vec4 = vec4( mx_perlin_noise_vec3( texcoord ), mx_perlin_noise_float( texcoord.add( vec2( 19, 73 ) ) ) );
return noise_vec4.mul( amplitude ).add( pivot );
};
export const mx_worley_noise_float = ( texcoord = uv(), jitter = 1 ) => worley_noise_float( texcoord.convert( 'vec2|vec3' ), jitter, 1 );
export const mx_worley_noise_vec2 = ( texcoord = uv(), jitter = 1 ) => worley_noise_vec2( texcoord.convert( 'vec2|vec3' ), jitter, 1 );
export const mx_worley_noise_vec3 = ( texcoord = uv(), jitter = 1 ) => worley_noise_vec3( texcoord.convert( 'vec2|vec3' ), jitter, 1 );
export const mx_cell_noise_float = ( texcoord = uv() ) => cell_noise_float( texcoord.convert( 'vec2|vec3' ) );
export const mx_fractal_noise_float = ( position = uv(), octaves = 3, lacunarity = 2, diminish = .5, amplitude = 1 ) => fractal_noise_float( position, octaves, lacunarity, diminish ).mul( amplitude );
export const mx_fractal_noise_vec2 = ( position = uv(), octaves = 3, lacunarity = 2, diminish = .5, amplitude = 1 ) => fractal_noise_vec2( position, octaves, lacunarity, diminish ).mul( amplitude );
export const mx_fractal_noise_vec3 = ( position = uv(), octaves = 3, lacunarity = 2, diminish = .5, amplitude = 1 ) => fractal_noise_vec3( position, octaves, lacunarity, diminish ).mul( amplitude );
export const mx_fractal_noise_vec4 = ( position = uv(), octaves = 3, lacunarity = 2, diminish = .5, amplitude = 1 ) => fractal_noise_vec4( position, octaves, lacunarity, diminish ).mul( amplitude );
export { mx_hsvtorgb, mx_rgbtohsv, mx_srgb_texture_to_lin_rec709 };

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import { glslFn } from '../../code/FunctionNode.js';
// Original shader code from:
// https://github.com/AcademySoftwareFoundation/MaterialX/blob/main/libraries/stdlib/genglsl/lib/mx_hsv.glsl
export const mx_hsvtorgb = glslFn( `vec3 mx_hsvtorgb(vec3 hsv)
{
// Reference for this technique: Foley & van Dam
float h = hsv.x; float s = hsv.y; float v = hsv.z;
if (s < 0.0001f) {
return vec3 (v, v, v);
} else {
h = 6.0f * (h - floor(h)); // expand to [0..6)
int hi = int(trunc(h));
float f = h - float(hi);
float p = v * (1.0f-s);
float q = v * (1.0f-s*f);
float t = v * (1.0f-s*(1.0f-f));
if (hi == 0)
return vec3 (v, t, p);
else if (hi == 1)
return vec3 (q, v, p);
else if (hi == 2)
return vec3 (p, v, t);
else if (hi == 3)
return vec3 (p, q, v);
else if (hi == 4)
return vec3 (t, p, v);
return vec3 (v, p, q);
}
}` );
export const mx_rgbtohsv = glslFn( `vec3 mx_rgbtohsv(vec3 c)
{
// See Foley & van Dam
float r = c.x; float g = c.y; float b = c.z;
float mincomp = min (r, min(g, b));
float maxcomp = max (r, max(g, b));
float delta = maxcomp - mincomp; // chroma
float h, s, v;
v = maxcomp;
if (maxcomp > 0.0f)
s = delta / maxcomp;
else s = 0.0f;
if (s <= 0.0f)
h = 0.0f;
else {
if (r >= maxcomp) h = (g-b) / delta;
else if (g >= maxcomp) h = 2.0f + (b-r) / delta;
else h = 4.0f + (r-g) / delta;
h *= (1.0f/6.0f);
if (h < 0.0f)
h += 1.0f;
}
return vec3(h, s, v);
}` );

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node_modules/three/examples/jsm/nodes/materialx/lib/mx_noise.js generated vendored Normal file
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import { glsl } from '../../code/CodeNode.js';
import { glslFn } from '../../code/FunctionNode.js';
// Original shader code from:
// https://github.com/AcademySoftwareFoundation/MaterialX/blob/main/libraries/stdlib/genglsl/lib/mx_noise.glsl
export const mx_noise = glsl( `float mx_select(bool b, float t, float f)
{
return b ? t : f;
}
float mx_negate_if(float val, bool b)
{
return b ? -val : val;
}
int mx_floor(float x)
{
return int(floor(x));
}
// return mx_floor as well as the fractional remainder
float mx_floorfrac(float x, out int i)
{
i = mx_floor(x);
return x - float(i);
}
float mx_bilerp(float v0, float v1, float v2, float v3, float s, float t)
{
float s1 = 1.0 - s;
return (1.0 - t) * (v0*s1 + v1*s) + t * (v2*s1 + v3*s);
}
vec3 mx_bilerp(vec3 v0, vec3 v1, vec3 v2, vec3 v3, float s, float t)
{
float s1 = 1.0 - s;
return (1.0 - t) * (v0*s1 + v1*s) + t * (v2*s1 + v3*s);
}
float mx_trilerp(float v0, float v1, float v2, float v3, float v4, float v5, float v6, float v7, float s, float t, float r)
{
float s1 = 1.0 - s;
float t1 = 1.0 - t;
float r1 = 1.0 - r;
return (r1*(t1*(v0*s1 + v1*s) + t*(v2*s1 + v3*s)) +
r*(t1*(v4*s1 + v5*s) + t*(v6*s1 + v7*s)));
}
vec3 mx_trilerp(vec3 v0, vec3 v1, vec3 v2, vec3 v3, vec3 v4, vec3 v5, vec3 v6, vec3 v7, float s, float t, float r)
{
float s1 = 1.0 - s;
float t1 = 1.0 - t;
float r1 = 1.0 - r;
return (r1*(t1*(v0*s1 + v1*s) + t*(v2*s1 + v3*s)) +
r*(t1*(v4*s1 + v5*s) + t*(v6*s1 + v7*s)));
}
// 2 and 3 dimensional gradient functions - perform a dot product against a
// randomly chosen vector. Note that the gradient vector is not normalized, but
// this only affects the overal "scale" of the result, so we simply account for
// the scale by multiplying in the corresponding "perlin" function.
float mx_gradient_float(uint hash, float x, float y)
{
// 8 possible directions (+-1,+-2) and (+-2,+-1)
uint h = hash & 7u;
float u = mx_select(h<4u, x, y);
float v = 2.0 * mx_select(h<4u, y, x);
// compute the dot product with (x,y).
return mx_negate_if(u, bool(h&1u)) + mx_negate_if(v, bool(h&2u));
}
float mx_gradient_float(uint hash, float x, float y, float z)
{
// use vectors pointing to the edges of the cube
uint h = hash & 15u;
float u = mx_select(h<8u, x, y);
float v = mx_select(h<4u, y, mx_select((h==12u)||(h==14u), x, z));
return mx_negate_if(u, bool(h&1u)) + mx_negate_if(v, bool(h&2u));
}
vec3 mx_gradient_vec3(uvec3 hash, float x, float y)
{
return vec3(mx_gradient_float(hash.x, x, y), mx_gradient_float(hash.y, x, y), mx_gradient_float(hash.z, x, y));
}
vec3 mx_gradient_vec3(uvec3 hash, float x, float y, float z)
{
return vec3(mx_gradient_float(hash.x, x, y, z), mx_gradient_float(hash.y, x, y, z), mx_gradient_float(hash.z, x, y, z));
}
// Scaling factors to normalize the result of gradients above.
// These factors were experimentally calculated to be:
// 2D: 0.6616
// 3D: 0.9820
float mx_gradient_scale2d(float v) { return 0.6616 * v; }
float mx_gradient_scale3d(float v) { return 0.9820 * v; }
vec3 mx_gradient_scale2d(vec3 v) { return 0.6616 * v; }
vec3 mx_gradient_scale3d(vec3 v) { return 0.9820 * v; }
/// Bitwise circular rotation left by k bits (for 32 bit unsigned integers)
uint mx_rotl32(uint x, int k)
{
return (x<<k) | (x>>(32-k));
}
void mx_bjmix(inout uint a, inout uint b, inout uint c)
{
a -= c; a ^= mx_rotl32(c, 4); c += b;
b -= a; b ^= mx_rotl32(a, 6); a += c;
c -= b; c ^= mx_rotl32(b, 8); b += a;
a -= c; a ^= mx_rotl32(c,16); c += b;
b -= a; b ^= mx_rotl32(a,19); a += c;
c -= b; c ^= mx_rotl32(b, 4); b += a;
}
// Mix up and combine the bits of a, b, and c (doesn't change them, but
// returns a hash of those three original values).
uint mx_bjfinal(uint a, uint b, uint c)
{
c ^= b; c -= mx_rotl32(b,14);
a ^= c; a -= mx_rotl32(c,11);
b ^= a; b -= mx_rotl32(a,25);
c ^= b; c -= mx_rotl32(b,16);
a ^= c; a -= mx_rotl32(c,4);
b ^= a; b -= mx_rotl32(a,14);
c ^= b; c -= mx_rotl32(b,24);
return c;
}
// Convert a 32 bit integer into a floating point number in [0,1]
float mx_bits_to_01(uint bits)
{
return float(bits) / float(uint(0xffffffff));
}
float mx_fade(float t)
{
return t * t * t * (t * (t * 6.0 - 15.0) + 10.0);
}
uint mx_hash_int(int x)
{
uint len = 1u;
uint seed = uint(0xdeadbeef) + (len << 2u) + 13u;
return mx_bjfinal(seed+uint(x), seed, seed);
}
uint mx_hash_int(int x, int y)
{
uint len = 2u;
uint a, b, c;
a = b = c = uint(0xdeadbeef) + (len << 2u) + 13u;
a += uint(x);
b += uint(y);
return mx_bjfinal(a, b, c);
}
uint mx_hash_int(int x, int y, int z)
{
uint len = 3u;
uint a, b, c;
a = b = c = uint(0xdeadbeef) + (len << 2u) + 13u;
a += uint(x);
b += uint(y);
c += uint(z);
return mx_bjfinal(a, b, c);
}
uint mx_hash_int(int x, int y, int z, int xx)
{
uint len = 4u;
uint a, b, c;
a = b = c = uint(0xdeadbeef) + (len << 2u) + 13u;
a += uint(x);
b += uint(y);
c += uint(z);
mx_bjmix(a, b, c);
a += uint(xx);
return mx_bjfinal(a, b, c);
}
uint mx_hash_int(int x, int y, int z, int xx, int yy)
{
uint len = 5u;
uint a, b, c;
a = b = c = uint(0xdeadbeef) + (len << 2u) + 13u;
a += uint(x);
b += uint(y);
c += uint(z);
mx_bjmix(a, b, c);
a += uint(xx);
b += uint(yy);
return mx_bjfinal(a, b, c);
}
uvec3 mx_hash_vec3(int x, int y)
{
uint h = mx_hash_int(x, y);
// we only need the low-order bits to be random, so split out
// the 32 bit result into 3 parts for each channel
uvec3 result;
result.x = (h ) & 0xFFu;
result.y = (h >> 8 ) & 0xFFu;
result.z = (h >> 16) & 0xFFu;
return result;
}
uvec3 mx_hash_vec3(int x, int y, int z)
{
uint h = mx_hash_int(x, y, z);
// we only need the low-order bits to be random, so split out
// the 32 bit result into 3 parts for each channel
uvec3 result;
result.x = (h ) & 0xFFu;
result.y = (h >> 8 ) & 0xFFu;
result.z = (h >> 16) & 0xFFu;
return result;
}
float mx_perlin_noise_float(vec2 p)
{
int X, Y;
float fx = mx_floorfrac(p.x, X);
float fy = mx_floorfrac(p.y, Y);
float u = mx_fade(fx);
float v = mx_fade(fy);
float result = mx_bilerp(
mx_gradient_float(mx_hash_int(X , Y ), fx , fy ),
mx_gradient_float(mx_hash_int(X+1, Y ), fx-1.0, fy ),
mx_gradient_float(mx_hash_int(X , Y+1), fx , fy-1.0),
mx_gradient_float(mx_hash_int(X+1, Y+1), fx-1.0, fy-1.0),
u, v);
return mx_gradient_scale2d(result);
}
float mx_perlin_noise_float(vec3 p)
{
int X, Y, Z;
float fx = mx_floorfrac(p.x, X);
float fy = mx_floorfrac(p.y, Y);
float fz = mx_floorfrac(p.z, Z);
float u = mx_fade(fx);
float v = mx_fade(fy);
float w = mx_fade(fz);
float result = mx_trilerp(
mx_gradient_float(mx_hash_int(X , Y , Z ), fx , fy , fz ),
mx_gradient_float(mx_hash_int(X+1, Y , Z ), fx-1.0, fy , fz ),
mx_gradient_float(mx_hash_int(X , Y+1, Z ), fx , fy-1.0, fz ),
mx_gradient_float(mx_hash_int(X+1, Y+1, Z ), fx-1.0, fy-1.0, fz ),
mx_gradient_float(mx_hash_int(X , Y , Z+1), fx , fy , fz-1.0),
mx_gradient_float(mx_hash_int(X+1, Y , Z+1), fx-1.0, fy , fz-1.0),
mx_gradient_float(mx_hash_int(X , Y+1, Z+1), fx , fy-1.0, fz-1.0),
mx_gradient_float(mx_hash_int(X+1, Y+1, Z+1), fx-1.0, fy-1.0, fz-1.0),
u, v, w);
return mx_gradient_scale3d(result);
}
vec3 mx_perlin_noise_vec3(vec2 p)
{
int X, Y;
float fx = mx_floorfrac(p.x, X);
float fy = mx_floorfrac(p.y, Y);
float u = mx_fade(fx);
float v = mx_fade(fy);
vec3 result = mx_bilerp(
mx_gradient_vec3(mx_hash_vec3(X , Y ), fx , fy ),
mx_gradient_vec3(mx_hash_vec3(X+1, Y ), fx-1.0, fy ),
mx_gradient_vec3(mx_hash_vec3(X , Y+1), fx , fy-1.0),
mx_gradient_vec3(mx_hash_vec3(X+1, Y+1), fx-1.0, fy-1.0),
u, v);
return mx_gradient_scale2d(result);
}
vec3 mx_perlin_noise_vec3(vec3 p)
{
int X, Y, Z;
float fx = mx_floorfrac(p.x, X);
float fy = mx_floorfrac(p.y, Y);
float fz = mx_floorfrac(p.z, Z);
float u = mx_fade(fx);
float v = mx_fade(fy);
float w = mx_fade(fz);
vec3 result = mx_trilerp(
mx_gradient_vec3(mx_hash_vec3(X , Y , Z ), fx , fy , fz ),
mx_gradient_vec3(mx_hash_vec3(X+1, Y , Z ), fx-1.0, fy , fz ),
mx_gradient_vec3(mx_hash_vec3(X , Y+1, Z ), fx , fy-1.0, fz ),
mx_gradient_vec3(mx_hash_vec3(X+1, Y+1, Z ), fx-1.0, fy-1.0, fz ),
mx_gradient_vec3(mx_hash_vec3(X , Y , Z+1), fx , fy , fz-1.0),
mx_gradient_vec3(mx_hash_vec3(X+1, Y , Z+1), fx-1.0, fy , fz-1.0),
mx_gradient_vec3(mx_hash_vec3(X , Y+1, Z+1), fx , fy-1.0, fz-1.0),
mx_gradient_vec3(mx_hash_vec3(X+1, Y+1, Z+1), fx-1.0, fy-1.0, fz-1.0),
u, v, w);
return mx_gradient_scale3d(result);
}
float mx_cell_noise_float(float p)
{
int ix = mx_floor(p);
return mx_bits_to_01(mx_hash_int(ix));
}
float mx_cell_noise_float(vec2 p)
{
int ix = mx_floor(p.x);
int iy = mx_floor(p.y);
return mx_bits_to_01(mx_hash_int(ix, iy));
}
float mx_cell_noise_float(vec3 p)
{
int ix = mx_floor(p.x);
int iy = mx_floor(p.y);
int iz = mx_floor(p.z);
return mx_bits_to_01(mx_hash_int(ix, iy, iz));
}
float mx_cell_noise_float(vec4 p)
{
int ix = mx_floor(p.x);
int iy = mx_floor(p.y);
int iz = mx_floor(p.z);
int iw = mx_floor(p.w);
return mx_bits_to_01(mx_hash_int(ix, iy, iz, iw));
}
vec3 mx_cell_noise_vec3(float p)
{
int ix = mx_floor(p);
return vec3(
mx_bits_to_01(mx_hash_int(ix, 0)),
mx_bits_to_01(mx_hash_int(ix, 1)),
mx_bits_to_01(mx_hash_int(ix, 2))
);
}
vec3 mx_cell_noise_vec3(vec2 p)
{
int ix = mx_floor(p.x);
int iy = mx_floor(p.y);
return vec3(
mx_bits_to_01(mx_hash_int(ix, iy, 0)),
mx_bits_to_01(mx_hash_int(ix, iy, 1)),
mx_bits_to_01(mx_hash_int(ix, iy, 2))
);
}
vec3 mx_cell_noise_vec3(vec3 p)
{
int ix = mx_floor(p.x);
int iy = mx_floor(p.y);
int iz = mx_floor(p.z);
return vec3(
mx_bits_to_01(mx_hash_int(ix, iy, iz, 0)),
mx_bits_to_01(mx_hash_int(ix, iy, iz, 1)),
mx_bits_to_01(mx_hash_int(ix, iy, iz, 2))
);
}
vec3 mx_cell_noise_vec3(vec4 p)
{
int ix = mx_floor(p.x);
int iy = mx_floor(p.y);
int iz = mx_floor(p.z);
int iw = mx_floor(p.w);
return vec3(
mx_bits_to_01(mx_hash_int(ix, iy, iz, iw, 0)),
mx_bits_to_01(mx_hash_int(ix, iy, iz, iw, 1)),
mx_bits_to_01(mx_hash_int(ix, iy, iz, iw, 2))
);
}
float mx_fractal_noise_float(vec3 p, int octaves, float lacunarity, float diminish)
{
float result = 0.0;
float amplitude = 1.0;
for (int i = 0; i < octaves; ++i)
{
result += amplitude * mx_perlin_noise_float(p);
amplitude *= diminish;
p *= lacunarity;
}
return result;
}
vec3 mx_fractal_noise_vec3(vec3 p, int octaves, float lacunarity, float diminish)
{
vec3 result = vec3(0.0);
float amplitude = 1.0;
for (int i = 0; i < octaves; ++i)
{
result += amplitude * mx_perlin_noise_vec3(p);
amplitude *= diminish;
p *= lacunarity;
}
return result;
}
vec2 mx_fractal_noise_vec2(vec3 p, int octaves, float lacunarity, float diminish)
{
return vec2(mx_fractal_noise_float(p, octaves, lacunarity, diminish),
mx_fractal_noise_float(p+vec3(19, 193, 17), octaves, lacunarity, diminish));
}
vec4 mx_fractal_noise_vec4(vec3 p, int octaves, float lacunarity, float diminish)
{
vec3 c = mx_fractal_noise_vec3(p, octaves, lacunarity, diminish);
float f = mx_fractal_noise_float(p+vec3(19, 193, 17), octaves, lacunarity, diminish);
return vec4(c, f);
}
float mx_worley_distance(vec2 p, int x, int y, int xoff, int yoff, float jitter, int metric)
{
vec3 tmp = mx_cell_noise_vec3(vec2(x+xoff, y+yoff));
vec2 off = vec2(tmp.x, tmp.y);
off -= 0.5f;
off *= jitter;
off += 0.5f;
vec2 cellpos = vec2(float(x), float(y)) + off;
vec2 diff = cellpos - p;
if (metric == 2)
return abs(diff.x) + abs(diff.y); // Manhattan distance
if (metric == 3)
return max(abs(diff.x), abs(diff.y)); // Chebyshev distance
// Either Euclidian or Distance^2
return dot(diff, diff);
}
float mx_worley_distance(vec3 p, int x, int y, int z, int xoff, int yoff, int zoff, float jitter, int metric)
{
vec3 off = mx_cell_noise_vec3(vec3(x+xoff, y+yoff, z+zoff));
off -= 0.5f;
off *= jitter;
off += 0.5f;
vec3 cellpos = vec3(float(x), float(y), float(z)) + off;
vec3 diff = cellpos - p;
if (metric == 2)
return abs(diff.x) + abs(diff.y) + abs(diff.z); // Manhattan distance
if (metric == 3)
return max(max(abs(diff.x), abs(diff.y)), abs(diff.z)); // Chebyshev distance
// Either Euclidian or Distance^2
return dot(diff, diff);
}
float mx_worley_noise_float(vec2 p, float jitter, int metric)
{
int X, Y;
vec2 localpos = vec2(mx_floorfrac(p.x, X), mx_floorfrac(p.y, Y));
float sqdist = 1e6f; // Some big number for jitter > 1 (not all GPUs may be IEEE)
for (int x = -1; x <= 1; ++x)
{
for (int y = -1; y <= 1; ++y)
{
float dist = mx_worley_distance(localpos, x, y, X, Y, jitter, metric);
sqdist = min(sqdist, dist);
}
}
if (metric == 0)
sqdist = sqrt(sqdist);
return sqdist;
}
vec2 mx_worley_noise_vec2(vec2 p, float jitter, int metric)
{
int X, Y;
vec2 localpos = vec2(mx_floorfrac(p.x, X), mx_floorfrac(p.y, Y));
vec2 sqdist = vec2(1e6f, 1e6f);
for (int x = -1; x <= 1; ++x)
{
for (int y = -1; y <= 1; ++y)
{
float dist = mx_worley_distance(localpos, x, y, X, Y, jitter, metric);
if (dist < sqdist.x)
{
sqdist.y = sqdist.x;
sqdist.x = dist;
}
else if (dist < sqdist.y)
{
sqdist.y = dist;
}
}
}
if (metric == 0)
sqdist = sqrt(sqdist);
return sqdist;
}
vec3 mx_worley_noise_vec3(vec2 p, float jitter, int metric)
{
int X, Y;
vec2 localpos = vec2(mx_floorfrac(p.x, X), mx_floorfrac(p.y, Y));
vec3 sqdist = vec3(1e6f, 1e6f, 1e6f);
for (int x = -1; x <= 1; ++x)
{
for (int y = -1; y <= 1; ++y)
{
float dist = mx_worley_distance(localpos, x, y, X, Y, jitter, metric);
if (dist < sqdist.x)
{
sqdist.z = sqdist.y;
sqdist.y = sqdist.x;
sqdist.x = dist;
}
else if (dist < sqdist.y)
{
sqdist.z = sqdist.y;
sqdist.y = dist;
}
else if (dist < sqdist.z)
{
sqdist.z = dist;
}
}
}
if (metric == 0)
sqdist = sqrt(sqdist);
return sqdist;
}
float mx_worley_noise_float(vec3 p, float jitter, int metric)
{
int X, Y, Z;
vec3 localpos = vec3(mx_floorfrac(p.x, X), mx_floorfrac(p.y, Y), mx_floorfrac(p.z, Z));
float sqdist = 1e6f;
for (int x = -1; x <= 1; ++x)
{
for (int y = -1; y <= 1; ++y)
{
for (int z = -1; z <= 1; ++z)
{
float dist = mx_worley_distance(localpos, x, y, z, X, Y, Z, jitter, metric);
sqdist = min(sqdist, dist);
}
}
}
if (metric == 0)
sqdist = sqrt(sqdist);
return sqdist;
}
vec2 mx_worley_noise_vec2(vec3 p, float jitter, int metric)
{
int X, Y, Z;
vec3 localpos = vec3(mx_floorfrac(p.x, X), mx_floorfrac(p.y, Y), mx_floorfrac(p.z, Z));
vec2 sqdist = vec2(1e6f, 1e6f);
for (int x = -1; x <= 1; ++x)
{
for (int y = -1; y <= 1; ++y)
{
for (int z = -1; z <= 1; ++z)
{
float dist = mx_worley_distance(localpos, x, y, z, X, Y, Z, jitter, metric);
if (dist < sqdist.x)
{
sqdist.y = sqdist.x;
sqdist.x = dist;
}
else if (dist < sqdist.y)
{
sqdist.y = dist;
}
}
}
}
if (metric == 0)
sqdist = sqrt(sqdist);
return sqdist;
}
vec3 mx_worley_noise_vec3(vec3 p, float jitter, int metric)
{
int X, Y, Z;
vec3 localpos = vec3(mx_floorfrac(p.x, X), mx_floorfrac(p.y, Y), mx_floorfrac(p.z, Z));
vec3 sqdist = vec3(1e6f, 1e6f, 1e6f);
for (int x = -1; x <= 1; ++x)
{
for (int y = -1; y <= 1; ++y)
{
for (int z = -1; z <= 1; ++z)
{
float dist = mx_worley_distance(localpos, x, y, z, X, Y, Z, jitter, metric);
if (dist < sqdist.x)
{
sqdist.z = sqdist.y;
sqdist.y = sqdist.x;
sqdist.x = dist;
}
else if (dist < sqdist.y)
{
sqdist.z = sqdist.y;
sqdist.y = dist;
}
else if (dist < sqdist.z)
{
sqdist.z = dist;
}
}
}
}
if (metric == 0)
sqdist = sqrt(sqdist);
return sqdist;
}` );
const includes = [ mx_noise ];
export const mx_perlin_noise_float = glslFn( 'float mx_perlin_noise_float( any p )', includes );
export const mx_perlin_noise_vec2 = glslFn( 'vec2 mx_perlin_noise_vec2( any p )', includes );
export const mx_perlin_noise_vec3 = glslFn( 'vec3 mx_perlin_noise_vec3( any p )', includes );
export const mx_cell_noise_float = glslFn( 'float mx_cell_noise_float( vec3 p )', includes );
export const mx_worley_noise_float = glslFn( 'float mx_worley_noise_float( any p, float jitter, int metric )', includes );
export const mx_worley_noise_vec2 = glslFn( 'vec2 mx_worley_noise_vec2( any p, float jitter, int metric )', includes );
export const mx_worley_noise_vec3 = glslFn( 'vec3 mx_worley_noise_vec3( any p, float jitter, int metric )', includes );
export const mx_fractal_noise_float = glslFn( 'float mx_fractal_noise_float( vec3 p, int octaves, float lacunarity, float diminish )', includes );
export const mx_fractal_noise_vec2 = glslFn( 'vec2 mx_fractal_noise_vec2( vec3 p, int octaves, float lacunarity, float diminish )', includes );
export const mx_fractal_noise_vec3 = glslFn( 'vec3 mx_fractal_noise_vec3( vec3 p, int octaves, float lacunarity, float diminish )', includes );
export const mx_fractal_noise_vec4 = glslFn( 'vec4 mx_fractal_noise_vec4( vec3 p, int octaves, float lacunarity, float diminish )', includes );

19
node_modules/three/examples/jsm/nodes/materialx/lib/mx_transform_color.js generated vendored Normal file
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import { glsl } from '../../code/CodeNode.js';
import { glslFn } from '../../code/FunctionNode.js';
// Original shader code from:
// https://github.com/AcademySoftwareFoundation/MaterialX/blob/main/libraries/stdlib/genglsl/lib/mx_transform_color.glsl
export const mx_transform_color = glsl( `#define M_AP1_TO_REC709 mat3(1.705079555511475, -0.1297005265951157, -0.02416634373366833, -0.6242334842681885, 1.138468623161316, -0.1246141716837883, -0.0808461606502533, -0.008768022060394287, 1.148780584335327)
vec3 mx_srgb_texture_to_lin_rec709(vec3 color)
{
bvec3 isAbove = greaterThan(color, vec3(0.04045));
vec3 linSeg = color / 12.92;
vec3 powSeg = pow(max(color + vec3(0.055), vec3(0.0)) / 1.055, vec3(2.4));
return mix(linSeg, powSeg, isAbove);
}` );
const includes = [ mx_transform_color ];
export const mx_srgb_texture_to_lin_rec709 = glslFn( 'vec3 mx_srgb_texture_to_lin_rec709( vec3 color )', includes );