- disabled the 0<->255 color swap because no support code to handle this exists yet.

source/core/menu/menu.cpp

@@ -325,7 +325,6 @@ void DMenu::Drawer ()
 	{
 		auto texid = TexMan.CheckForTexture("engine/graphics/m_back.png", ETextureType::Any);
 		if (texid.isValid())
-		if (tex)
 		{
 			auto tex = TexMan.GetTexture(texid);
 			int w = tex->GetDisplayWidth() * CleanXfac;

source/core/textures/buildtiles.cpp

@@ -113,12 +113,14 @@ static FTexture* GetTileTexture(const char* name, const TArray<uint8_t>& backing
 	auto tex = new FArtTile(backingstore, offset, width, height);
 	auto p = &backingstore[offset];
 	auto siz = width * height;
+#if 0
 	for (int i = 0; i < siz; i++, p++)
 	{
 		// move transparent color to index 0 to get in line with the rest of the texture management.
 		if (*p == 0) *p = 255;
 		else if (*p == 255) *p = 0;
 	}
+#endif
 
 	if (tex)
 	{
@@ -544,6 +546,7 @@ int32_t tileGetCRC32(int tileNum)
 	auto size = tile->GetWidth() * tile->GetHeight();
 	if (size == 0) return 0;
 
+#if 0
 	// Temporarily revert the data to its original form with 255 being transparent. Otherwise the CRC won't match.
 	auto p = pixels;
 	for (int i = 0; i < size; i++, p++)
@@ -552,9 +555,11 @@ int32_t tileGetCRC32(int tileNum)
 		if (*p == 0) *p = 255;
 		else if (*p == 255) *p = 0;
 	}
+#endif
 
 	auto crc = crc32(0, (const Bytef*)pixels, size);
 
+#if 0
 	// ... and back again.
 	p = pixels;
 	for (int i = 0; i < size; i++, p++)
@@ -563,6 +568,7 @@ int32_t tileGetCRC32(int tileNum)
 		if (*p == 0) *p = 255;
 		else if (*p == 255) *p = 0;
 	}
+#endif
 	return crc;
 }