From 95ac1aa5b2b7d8d1ce6e4df0a0091535efe2b137 Mon Sep 17 00:00:00 2001
From: RoosterDragon <RoosterDragon@outlook.com>
Date: Sat, 26 May 2018 16:16:41 +0100
Subject: [PATCH] Avoid redundant property sets in WorldRenderer.Draw.

---
 OpenRA.Game/Graphics/WorldRenderer.cs | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/OpenRA.Game/Graphics/WorldRenderer.cs b/OpenRA.Game/Graphics/WorldRenderer.cs
index 148110c460..4698c8589d 100644
--- a/OpenRA.Game/Graphics/WorldRenderer.cs
+++ b/OpenRA.Game/Graphics/WorldRenderer.cs
@@ -39,6 +39,8 @@ namespace OpenRA.Graphics
 		readonly Func<string, PaletteReference> createPaletteReference;
 		readonly bool enableDepthBuffer;
 
+		bool lastDepthPreviewEnabled;
+
 		internal WorldRenderer(ModData modData, World world)
 		{
 			World = world;
@@ -163,10 +165,11 @@ namespace OpenRA.Graphics
 			if (World.WorldActor.Disposed)
 				return;
 
-			if (debugVis.Value != null)
+			if (debugVis.Value != null && lastDepthPreviewEnabled != debugVis.Value.DepthBuffer)
 			{
-				Game.Renderer.WorldSpriteRenderer.SetDepthPreviewEnabled(debugVis.Value.DepthBuffer);
-				Game.Renderer.WorldRgbaSpriteRenderer.SetDepthPreviewEnabled(debugVis.Value.DepthBuffer);
+				lastDepthPreviewEnabled = debugVis.Value.DepthBuffer;
+				Game.Renderer.WorldSpriteRenderer.SetDepthPreviewEnabled(lastDepthPreviewEnabled);
+				Game.Renderer.WorldRgbaSpriteRenderer.SetDepthPreviewEnabled(lastDepthPreviewEnabled);
 			}
 
 			RefreshPalette();