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rainbows

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This commit is contained in:
IsseW 2022-02-06 20:33:35 +01:00
parent 78c1de19cf
commit 547301ff5f
1 changed files with 24 additions and 1 deletions
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25
assets/voxygen/shaders/include/cloud/regular.glsl
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@ -237,12 +237,18 @@ vec3 get_cloud_color(vec3 surf_color, vec3 dir, vec3 origin, const float time_of
// i is an emergency brake
float min_dist = clamp(max_dist / 4, 0.25, 24);
int i;
float rainbow_t = (0.7 - dot(sun_dir.xyz, dir)) * 8 / 0.05;
int rainbow_c = int(floor(rainbow_t));
rainbow_t = fract(rainbow_t);
for (i = 0; cdist > min_dist && i < 250; i ++) {
ldist = cdist;
cdist = step_to_dist(trunc(dist_to_step(cdist - 0.25, quality)), quality);
vec3 emission;
float not_underground; // Used to prevent sunlight leaking underground
vec3 pos = origin + dir * ldist * splay;
// `sample` is a reserved keyword
vec4 sample_ = cloud_at(origin + dir * ldist * splay, ldist, emission, not_underground);
@ -263,10 +269,27 @@ vec3 get_cloud_color(vec3 surf_color, vec3 dir, vec3 origin, const float time_of
// Attenuate light passing through the clouds
surf_color * cloud_darken * global_darken +
// Add the directed light light scattered into the camera by the clouds and the atmosphere (global illumination)
sun_color * sun_scatter * get_sun_brightness() * (sun_access * (1.0 - cloud_darken) * cloud_diffuse /*+ sky_color * global_scatter_factor*/) +
sun_color * sun_scatter * get_sun_brightness() * (sun_access * (1.0 - cloud_darken) * cloud_diffuse /*+ sky_color * global_scatter_factor*/) +
moon_color * moon_scatter * get_moon_brightness() * (moon_access * (1.0 - cloud_darken) * cloud_diffuse /*+ sky_color * global_scatter_factor*/) +
sky_light * (1.0 - global_darken) * not_underground +
emission * density_integrals.y * step;
// Rainbow
if (rainbow_c >= 0 && rainbow_c < 8) {
float rain = rain_density_at(pos.xy);
vec3 colors[9] = {
surf_color,
vec3(0.9, 0.5, 0.9),
vec3(0.25, 0.0, 0.5),
vec3(0.0, 0.0, 1.0),
vec3(0.0, 0.5, 0.0),
vec3(1.0, 1.0, 0.0),
vec3(1.0, 0.6, 0.0),
vec3(1.0, 0.0, 0.0),
surf_color,
};
surf_color = mix(surf_color, mix(colors[rainbow_c], colors[rainbow_c + 1], rainbow_t), rain * sun_access * sun_access * get_sun_brightness() * pow(min(cdist / 500.0, 1.0), 2.0));
}
}
#ifdef IS_POSTPROCESS
}