From bb95e0c337d7c23e052d16a197bc18b07e8338d1 Mon Sep 17 00:00:00 2001
From: Gleb Mazovetskiy <glex.spb@gmail.com>
Date: Sat, 22 May 2021 14:28:43 +0100
Subject: [PATCH] cl2_render: Use memset when rendering outline

A minor cleanup that replaces the for-loop rendering for a fill run
with memsets.
---
 Source/engine/render/cl2_render.cpp | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/Source/engine/render/cl2_render.cpp b/Source/engine/render/cl2_render.cpp
index 34eda28c9..db7d67205 100644
--- a/Source/engine/render/cl2_render.cpp
+++ b/Source/engine/render/cl2_render.cpp
@@ -341,8 +341,18 @@ void RenderOutlineForPixel(std::uint8_t *dst, int dstPitch, std::uint8_t color)
 template <bool North, bool West, bool South, bool East>
 void RenderOutlineForPixels(std::uint8_t *dst, int dstPitch, int width, std::uint8_t color)
 {
-	while (width-- > 0)
-		RenderOutlineForPixel<North, West, South, East>(dst++, dstPitch, color);
+	if (North)
+		std::memset(dst - dstPitch, color, width);
+
+	if (West && East)
+		std::memset(dst - 1, color, width + 2);
+	else if (West)
+		std::memset(dst - 1, color, width);
+	else if (East)
+		std::memset(dst + 1, color, width);
+
+	if (South)
+		std::memset(dst + dstPitch, color, width);
 }
 
 template <bool North, bool West, bool South, bool East>