From 637b5ef0d5fd66718e66b767eb64af6d57e90005 Mon Sep 17 00:00:00 2001
From: Aciz <arto.karkulahti@gmail.com>
Date: Tue, 4 Jun 2024 05:55:32 +0300
Subject: [PATCH] Cull clips/triggers/slicks out of PVS

In addition to frustum culling, don't draw brushes that are not in current PVS.
---
 src/client/cl_tc_vis.c | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/src/client/cl_tc_vis.c b/src/client/cl_tc_vis.c
index 7d694bee..ae6c0f08 100644
--- a/src/client/cl_tc_vis.c
+++ b/src/client/cl_tc_vis.c
@@ -481,12 +481,22 @@ static qboolean CullFace(const visFace_t *face) {
 
 static void draw(visBrushNode_t *brush, qhandle_t shader) {
 	frustum = re.GetFrustum();
+	vec3_t clientOrigin;
+	VectorCopy(cl.cgameClientLerpOrigin, clientOrigin);
+
 	while (brush) {
 		int i;
 		for (i = 0; i < brush->numFaces; ++i) {
-			if (CullFace(brush->faces + i)) continue;
+			if (CullFace(brush->faces + i)) {
+				continue;
+			}
+
+			if (!re.inPVS(clientOrigin, brush->faces->mins) && !re.inPVS(clientOrigin, brush->faces->maxs)) {
+				continue;
+			}
+
 			re.AddPolyToScene(shader, brush->faces[i].numVerts, brush->faces[i].verts);
 		}
 		brush = brush->next;
 	}
-}
\ No newline at end of file
+}