From 9f8dee45c49aca39323e41ebf98434114aa39236 Mon Sep 17 00:00:00 2001
From: Randy Heit <rheit@users.noreply.github.com>
Date: Mon, 25 Jan 2016 21:44:08 -0600
Subject: [PATCH] Fixed: 0 was accidentally not allowed as transparent for
 grayscale

- I don't know what I was thinking when I wrote that.
---
 src/textures/pngtexture.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/textures/pngtexture.cpp b/src/textures/pngtexture.cpp
index 7a7e4960d..5a3ae960a 100644
--- a/src/textures/pngtexture.cpp
+++ b/src/textures/pngtexture.cpp
@@ -302,7 +302,7 @@ FPNGTexture::FPNGTexture (FileReader &lump, int lumpnum, const FString &filename
 	case 0:		// Grayscale
 		if (!bAlphaTexture)
 		{
-			if (colortype == 0 && HaveTrans && NonPaletteTrans[0] != 0 && NonPaletteTrans[0] < 256)
+			if (colortype == 0 && HaveTrans && NonPaletteTrans[0] < 256)
 			{
 				bMasked = true;
 				PaletteSize = 256;