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Minor cleanup

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This commit is contained in:
Moritz Brückner 2021-08-14 23:57:28 +02:00
parent ca96174b6b
commit 1de97e1898
2 changed files with 2 additions and 8 deletions
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2
Shaders/std/math.glsl
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@ -23,7 +23,7 @@ vec2 rand2(const vec2 coord) {
const float width = 1100.0;
const float height = 500.0;
float noiseX = ((fract(1.0 - coord.s * (width / 2.0)) * 0.25) + (fract(coord.t * (height / 2.0)) * 0.75)) * 2.0 - 1.0;
float noiseY = ((fract(1.0 - coord.s * (width / 2.0)) * 0.75) + (fract(coord.t * (height / 2.0)) * 0.25)) * 2.0 - 1.0;
float noiseY = ((fract(1.0 - coord.s * (width / 2.0)) * 0.75) + (fract(coord.t * (height / 2.0)) * 0.25)) * 2.0 - 1.0;
return vec2(noiseX, noiseY);
}

8
Shaders/std/sky.glsl
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@ -46,15 +46,9 @@ uniform vec2 nishitaDensity;
#define nishita_mie_dir 0.76 // Aerosols anisotropy ("direction")
#define nishita_mie_dir_sq 0.5776 // Squared aerosols anisotropy
// Values from [Hill: 60]
#define sun_limb_darkening_col vec3(0.397, 0.503, 0.652)
float random(vec2 coords) {
// Returned value is in [0, 1]
return fract(sin(dot(coords.xy, vec2(12.9898,78.233))) * 43758.5453);
}
vec3 nishita_lookupLUT(const float height, const float sunTheta) {
vec2 coords = vec2(
sqrt(height * (1 / nishita_atmo_radius)),
@ -133,7 +127,7 @@ vec3 nishita_atmosphere(const vec3 r, const vec3 r0, const vec3 pSun, const floa
vec3 attn = iAttn * jAttn;
// Apply dithering to reduce visible banding
attn *= 0.98 + random(r.xy) * 0.04;
attn *= 0.98 + rand(r.xy) * 0.04;
// Accumulate scattering
totalRlh += odStepRlh * attn;