From 8ea74770fde01ed6d8d7dd50160b213a54e5f043 Mon Sep 17 00:00:00 2001
From: Magnus Norddahl <dpjudas@users.noreply.github.com>
Date: Fri, 5 Oct 2018 21:30:16 +0200
Subject: [PATCH] - fix artifact in PCF filter when the texture coordinate
 wraps

---
 wadsrc/static/shaders/glsl/main.fp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/wadsrc/static/shaders/glsl/main.fp b/wadsrc/static/shaders/glsl/main.fp
index 6bc34d275c..228d7b02d8 100644
--- a/wadsrc/static/shaders/glsl/main.fp
+++ b/wadsrc/static/shaders/glsl/main.fp
@@ -248,7 +248,7 @@ float sampleShadowmapPCF(vec3 planePoint, float v)
 	texelPos -= step_count + 0.5;
 	for (float x = -step_count; x <= step_count; x++)
 	{
-		float u = texelPos / scale;
+		float u = fract(texelPos / scale);
 		vec2 dir = shadowUToDir(u);
 
 		ray.x = dir.x;