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+ | Better material pathtraced system

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TheRedShip
2025-01-04 19:34:05 +01:00
parent 8f256e5c35
commit d02b9ffb5d
4 changed files with 49 additions and 66 deletions
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45
shaders/random.glsl
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@ -1,48 +1,3 @@
float rand_seed = 0;
uint hash( uint x ) {
x += ( x << 10u );
x ^= ( x >> 6u );
x += ( x << 3u );
x ^= ( x >> 11u );
x += ( x << 15u );
return x;
}
uint hash( uvec2 v ) { return hash( v.x ^ hash(v.y) ); }
uint hash( uvec3 v ) { return hash( v.x ^ hash(v.y) ^ hash(v.z) ); }
uint hash( uvec4 v ) { return hash( v.x ^ hash(v.y) ^ hash(v.z) ^ hash(v.w) ); }
float floatConstruct( uint m ) {
const uint ieeeMantissa = 0x007FFFFFu;
const uint ieeeOne = 0x3F800000u;
m &= ieeeMantissa;
m |= ieeeOne;
float f = uintBitsToFloat( m );
return f - 1.0;
}
float randombis( float x ) { return floatConstruct(hash(floatBitsToUint(x))); }
float randombis( vec2 v ) { return floatConstruct(hash(floatBitsToUint(v))); }
float randombis( vec3 v ) { return floatConstruct(hash(floatBitsToUint(v))); }
float randombis( vec4 v ) { return floatConstruct(hash(floatBitsToUint(v))); }
float random(vec2 uv, float time)
{
if (rand_seed == 0)
rand_seed = time;
rand_seed *= 2;
return randombis(vec3(uv.xy, time * rand_seed));
}
vec3 randomVec3(vec2 uv, float time)
{
return (vec3((random(uv, time) - 0.5) * 2, (random(uv, time) - 0.5) * 2, (random(uv, time) - 0.5) * 2));
}
float randomValue(inout uint rng_state)
{
rng_state = rng_state * 747796405 + 2891336453;