From e4d6e92f37e9d9dcb6d21ea0ca5e57818dc1f2a8 Mon Sep 17 00:00:00 2001
From: Hannu Hanhi <hhanhipublic@gmail.com>
Date: Thu, 23 Jul 2020 19:05:17 +0300
Subject: [PATCH] Clamp light level for shaders. Fixes #194.

---
 src/hardware/hw_main.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/hardware/hw_main.c b/src/hardware/hw_main.c
index 0d7404c77..127756a00 100644
--- a/src/hardware/hw_main.c
+++ b/src/hardware/hw_main.c
@@ -214,6 +214,9 @@ void HWR_Lighting(FSurfaceInfo *Surface, INT32 light_level, extracolormap_t *col
 		poly_color.s.blue = (UINT8)blue;
 	}
 
+	// Clamp the light level, since it can sometimes go out of the 0-255 range from animations
+	light_level = min(max(light_level, 0), 255);
+
 	Surface->PolyColor.rgba = poly_color.rgba;
 	Surface->TintColor.rgba = tint_color.rgba;
 	Surface->FadeColor.rgba = fade_color.rgba;