From a7e7db1fe93f38216fb038e230d8d02d29ff6a38 Mon Sep 17 00:00:00 2001
From: "alexey.lysiuk" <alexey.lysiuk@gmail.com>
Date: Thu, 10 May 2018 15:45:29 +0300
Subject: [PATCH] - fixed calculation of glow color

Width and pitch were mixed up for RGB format texture, pixel data were read outside of designated buffer

https://forum.zdoom.org/viewtopic.php?t=60538
---
 src/textures/texture.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/textures/texture.cpp b/src/textures/texture.cpp
index 997ac3708f..50ba4d1bd2 100644
--- a/src/textures/texture.cpp
+++ b/src/textures/texture.cpp
@@ -1136,10 +1136,10 @@ void FTexture::GetGlowColor(float *data)
 	if (bGlowing && GlowColor == 0)
 	{
 		int w = Width, h = Height;
-		auto buffer = new uint8_t[w * h];
+		auto buffer = new uint8_t[w * h * 4];
 		if (buffer)
 		{
-			FillBuffer(buffer, w, h, TEX_RGB);
+			FillBuffer(buffer, w * 4, h, TEX_RGB);
 			GlowColor = averageColor((uint32_t *)buffer, w*h, 153);
 			delete[] buffer;
 		}