From 2c621a3fc48dfd1468517616a24a2c1207f53317 Mon Sep 17 00:00:00 2001
From: cloudwalk <cloudwalk@d7cf8633-e32d-0410-b094-e92efae38249>
Date: Tue, 18 Aug 2020 16:36:30 +0000
Subject: [PATCH] gl_rmain: Perform lightmap updates only on visible surfaces.
 Fixes AD perf

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@12907 d7cf8633-e32d-0410-b094-e92efae38249
---
 gl_rmain.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/gl_rmain.c b/gl_rmain.c
index 19f97cf8..6a69bdd6 100644
--- a/gl_rmain.c
+++ b/gl_rmain.c
@@ -10088,7 +10088,8 @@ void R_DrawModelSurfaces(entity_render_t *ent, qboolean skysurfaces, qboolean wr
 		int updated = 0;
 		for (j = model->firstmodelsurface, endj = model->firstmodelsurface + model->nummodelsurfaces;j < endj;j++)
 		{
-			if (update[j])
+			// Update brush entities even if not visible otherwise they'll render solid black.
+			if (update[j] && (r_refdef.viewcache.world_surfacevisible[j] || ent != r_refdef.scene.worldentity))
 			{
 				updated++;
 				R_BuildLightMap(ent, surfaces + j);
-- 
2.39.2