From ba4b704ebf24952ab9a84c914b8ad6c45dabfaba Mon Sep 17 00:00:00 2001
From: Lars Hofhansl <larsh@apache.org>
Date: Mon, 27 Feb 2017 23:06:15 -0800
Subject: Allow server side occlusion culling.

---
 src/clientiface.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'src/clientiface.cpp')

diff --git a/src/clientiface.cpp b/src/clientiface.cpp
index 0eb68c9c1..76a34c392 100644
--- a/src/clientiface.cpp
+++ b/src/clientiface.cpp
@@ -197,6 +197,9 @@ void RemoteClient::GetNextBlocks (
 	s32 nearest_sent_d = -1;
 	//bool queue_is_full = false;
 
+	const v3s16 cam_pos_nodes = floatToInt(camera_pos, BS);
+	const bool occ_cull = g_settings->getBool("server_side_occlusion_culling");
+
 	s16 d;
 	for(d = d_start; d <= d_max; d++) {
 		/*
@@ -298,6 +301,11 @@ void RemoteClient::GetNextBlocks (
 					if(block->getDayNightDiff() == false)
 						continue;
 				}
+
+				if (occ_cull && !block_is_invalid &&
+						env->getMap().isBlockOccluded(block, cam_pos_nodes)) {
+					continue;
+				}
 			}
 
 			/*
-- 
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