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Code Issues 150 Wiki Activity

Fit the cascades of the sun shadows to the depth of the view

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Hirek
2026-10-19 12:02:01 +02:00
parent e7c65993d8
commit 8c00b0bc3d
13 changed files with 857 additions and 21 deletions
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23
shaders/fog_inject.comp
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@@ -87,13 +87,22 @@ float sun_shadow(vec3 position)
for (cascade = 0U; cascade < MAX_CASCADES; cascade++)
if (span_distance <= cascade_end[cascade])
break;
if (cascade >= MAX_CASCADES)
return 0.0;
vec4 lightpos = lightview[cascade] * vec4(position, 1.0);
vec3 coords = lightpos.xyz / lightpos.w;
if (coords.z < 0.0 || any(lessThan(coords.xy, vec2(0.0))) || any(greaterThan(coords.xy, vec2(1.0))))
return 0.0;
return texture(shadowmap, vec4(coords.xy, float(cascade), coords.z + 0.0001 * float(cascade + 1U)));
for (; cascade < MAX_CASCADES; cascade++)
{
vec4 lightpos = lightview[cascade] * vec4(position, 1.0);
vec3 coords = lightpos.xyz / lightpos.w;
if (all(greaterThanEqual(coords.xy, vec2(0.0))) && all(lessThanEqual(coords.xy, vec2(1.0))))
{
if (coords.z < 0.0)
return 0.0;
return texture(shadowmap, vec4(coords.xy, float(cascade), coords.z + 0.0001 * float(cascade + 1U)));
}
// outside the map: lit, unless the cascades are fitted to the depth of the view (gfx.shadow.sdsm), whose maps cover
// only the area of the surfaces seen; then the first further cascade whose map holds the point
if (shadow_fit.x <= 0.0)
return 0.0;
}
return 0.0;
#else
return 0.0;
#endif