From 1f12c3dd8e3b61ad41a5f05a1a4020e73f46e3c8 Mon Sep 17 00:00:00 2001
From: Randy Heit <rheit@zdoom.fake>
Date: Tue, 9 Mar 2010 03:18:31 +0000
Subject: [PATCH] - Whoops. DXT5 decompression got the alpha values wrong.
 That's "wrong" as in "garbage", since   yalphaslice was never initialized to
 anything. (I should probably test this to make sure I   actually got it right
 now...)

SVN r2205 (trunk)
---
 src/textures/ddstexture.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/textures/ddstexture.cpp b/src/textures/ddstexture.cpp
index 3d68c41779..ab5b4505de 100644
--- a/src/textures/ddstexture.cpp
+++ b/src/textures/ddstexture.cpp
@@ -831,7 +831,7 @@ void FDDSTexture::DecompressDXT5 (FWadLump &lump, bool premultiplied, BYTE *tcbu
 					break;
 				}
 				// Alpha values are stored in 3 bytes for 2 rows
-				if ((y & 0) == 0)
+				if ((y & 1) == 0)
 				{
 					yalphaslice = block[y*3] | (block[y*3+1] << 8) | (block[y*3+2] << 16);
 				}