fix nan in shader lighting

ucpu · Jun 12, 2024 · c70995c · c70995c
1 parent a455e3f
commit c70995c
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diff --git a/data/cage/shader/functions/attenuation.glsl b/data/cage/shader/functions/attenuation.glsl
@@ -4,6 +4,7 @@ float attenuation(vec4 att, float dist)
 	// att: // type, minDistance, maxDistance, unused
 	float minDistance = att[1];
 	float maxDistance = att[2];
+	dist = clamp(dist, minDistance, maxDistance);
 	switch (int(att[0]))
 	{
 		case 0: // none

diff --git a/sources/libengine/graphics/renderPipeline.cpp b/sources/libengine/graphics/renderPipeline.cpp
@@ -206,6 +206,7 @@ namespace cage
 
 		UniLight initializeLightUni(const Mat4 &model, const LightComponent &lc)
 		{
+			CAGE_ASSERT(lc.minDistance > 0 && lc.maxDistance > lc.minDistance);
 			static constexpr Real RoundingOffset = 1e-7;
 			UniLight uni;
 			uni.color = Vec4(colorGammaToLinear(lc.color), lc.intensity);