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Changes refraction function to be exponential with a configurable variable, removes unnecessary comments

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Qlonever 2023-04-12 04:33:09 -04:00 committed by elsid
parent b6ce6f67a1
commit 983cfbca03
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1 changed files with 2 additions and 3 deletions
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files/shaders/compatibility/water.frag
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@ -17,6 +17,7 @@
// tweakables -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
const float VISIBILITY = 2500.0;
const float DEPTH_FADE = 18.0; // how quickly shores fade into water
const float BIG_WAVES_X = 0.1; // strength of big waves
const float BIG_WAVES_Y = 0.1;
@ -194,9 +195,7 @@ void main(void)
if (cameraPos.z < 0.0)
refraction = clamp(mix(refraction, waterColor, clamp(1.0 / (surfaceDepth * VISIBILITY), 0.0, 1.0)) * 1.5, 0.0, 1.0);
else
// a rational curve rising from 0 to 1 between 0 and VISIBILITY units of depth
// refraction = mix(refraction, waterColor, clamp((-1.0 / (waterDepthDistorted / (VISIBILITY * DEPTH_FADE) + (-1 + sqrt(1.0 + 4.0 * DEPTH_FADE * DEPTH_FADE)) / (2.0 * DEPTH_FADE)) + (-1.0 + sqrt(1.0 + 4.0 * DEPTH_FADE * DEPTH_FADE)) / (2.0 * DEPTH_FADE)) * DEPTH_FADE + 1.0, 0.0, 1.0));
refraction = mix(refraction, waterColor, clamp(-1.0 * VISIBILITY /(25.0 * waterDepthDistorted + 0.96291 * VISIBILITY) + 1.03852, 0.0, 1.0)); // an optimized version of the above function, assuming 0.2 for DEPTH_FADE
refraction = mix(refraction, waterColor, clamp(-1.0 * pow(0.5, DEPTH_FADE * waterDepthDistorted / VISIBILITY) + 1.0, 0.0, 1.0));
// sunlight scattering
// normal for sunlight scattering