From 5509096158cf92a0afac26d92f0f46e8b5afd18f Mon Sep 17 00:00:00 2001
From: N8n5h <youvejoe@protonmail.com>
Date: Fri, 6 Aug 2021 18:34:39 -0300
Subject: [PATCH] fix volumetric lights not working with shadow map atlas
 enabled

Added missing code so the shader refers to the correct variable when
using shadow map atlasing.
---
 .../volumetric_light.frag.glsl                | 20 ++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/Shaders/volumetric_light/volumetric_light.frag.glsl b/Shaders/volumetric_light/volumetric_light.frag.glsl
index a0817b54..693d7b1d 100644
--- a/Shaders/volumetric_light/volumetric_light.frag.glsl
+++ b/Shaders/volumetric_light/volumetric_light.frag.glsl
@@ -44,7 +44,15 @@ uniform vec2 cameraPlane;
 uniform vec3 sunDir;
 uniform vec3 sunCol;
 	#ifdef _ShadowMap
+	#ifdef _ShadowMapAtlas
+	#ifndef _SingleAtlas
+	uniform sampler2DShadow shadowMapAtlasSun;
+	#else
+	uniform sampler2DShadow shadowMapAtlas;
+	#endif
+	#else
 	uniform sampler2DShadow shadowMap;
+	#endif
 	uniform float shadowsBias;
 	#ifdef _CSM
 	//!uniform vec4 casData[shadowmapCascades * 4 + 4];
@@ -95,7 +103,17 @@ void rayStep(inout vec3 curPos, inout float curOpticalDepth, inout float scatter
 	#endif
 	vec4 lPos = LWVP * vec4(curPos, 1.0);
 	lPos.xyz /= lPos.w;
-	visibility = texture(shadowMap, vec3(lPos.xy, lPos.z - shadowsBias));
+	visibility = texture(
+		#ifdef _ShadowMapAtlas
+			#ifndef _SingleAtlas
+			shadowMapAtlasSun
+			#else
+			shadowMapAtlas
+			#endif
+		#else
+		shadowMap
+		#endif
+	, vec3(lPos.xy, lPos.z - shadowsBias));
 #endif
 
 #ifdef _SinglePoint