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Code Issues 157 Wiki Activity

Let the base and the top of every cloud stand a little off those of its layer

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Hirek
2026-10-17 19:43:18 +02:00
parent df48637718
commit 1730f400ad
3 changed files with 53 additions and 15 deletions
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5
shaders/clouds_noise.comp
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@@ -1,7 +1,7 @@
// the tiling noises the clouds and the fog are made of, made once at the start (opengl46_weather::init).
// kind 0, the shape (3d): r perlin-worley (perlin fbm with the worley cells carved in), g b a worley fbm of rising frequency;
// kind 1, the detail (3d): r g b worley fbm of rising frequency;
// kind 2, the coverage (2d): r g two perlin fbm, spread evenly over 0-1 so a threshold of 1 - c leaves a share c above it
// kind 2, the coverage (2d): r g b three perlin fbm, spread evenly over 0-1 so a threshold of 1 - c leaves a share c above it
#include <common>
#include <random.glsl>
@@ -111,7 +111,8 @@ void main()
vec3 position = vec3((vec2(texel.xy) + 0.5) / float(size), 0.0);
float first = perlin_fbm(position, 4, COVERAGE_OCTAVES, 11U);
float second = perlin_fbm(position + vec3(0.0, 0.0, 0.5), 8, 5, 23U);
imageStore(noise_plane, texel.xy, vec4(even(first, 0.22), even(second, 0.22), 0.0, 1.0));
float third = perlin_fbm(position + vec3(0.0, 0.0, 0.25), 8, 5, 29U);
imageStore(noise_plane, texel.xy, vec4(even(first, 0.22), even(second, 0.22), even(third, 0.22), 1.0));
return;
}
if (texel.z >= size)