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Fix #146632: Multiple Scattering Sky has dark pixels near the horizon

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Avoid sqrt of a negative number.

Pull Request: https://projects.blender.org/blender/blender/pulls/146718
This commit is contained in:
marcopavanello
2025-09-26 17:29:00 +02:00
committed by Brecht Van Lommel
parent fff8d35e3f
commit 8e9ccb33d0
1 changed files with 1 additions and 1 deletions
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intern/sky/source/sky_multiple_scattering.cpp
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@@ -241,7 +241,7 @@ class SkyMultipleScattering {
inline float4 lookup_multiscattering(float cos_theta, float normalized_height, float d) const
{
/* Solid angle subtended by the planet from a point at d distance from the planet center. */
const float omega = M_2PI_F * (1.0f - sqrtf(1.0f - sqr(EARTH_RADIUS / d)));
const float omega = M_2PI_F * (1.0f - safe_sqrtf(1.0f - sqr(EARTH_RADIUS / d)));
const float4 T_to_ground = lookup_transmittance_at_ground(cos_theta);
/* We can split the path into Ground <-> Sample <-> Sun.
* The LUT gives us both T(Sample,Sun) and T(Ground,Sun) = T(Ground,Sample)*T(Sample,Sun),