forked from Mirrorlandia_minetest/minetest
Make sure nightRatio is always greater than zero.
To avoid underfined behavior of GLSL pow()
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@ -512,7 +512,7 @@ void main(void)
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// turns out that nightRatio falls off much faster than
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// actual brightness of artificial light in relation to natual light.
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// Power ratio was measured on torches in MTG (brightness = 14).
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float adjusted_night_ratio = pow(nightRatio, 0.6);
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float adjusted_night_ratio = pow(max(0.0, nightRatio), 0.6);
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if (f_normal_length != 0 && cosLight < 0.035) {
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shadow_int = max(shadow_int, 1 - clamp(cosLight, 0.0, 0.035)/0.035);
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