SpinOff Genesis Modifications

I use only one modification for the engine. It was first published by N'lightning software, and fixes 100% transparency on brushes.
Change World.c line 1781 as following:


pTLVerts->a = pTexInfo->Alpha;
if (pTexInfo->Alpha == 0.0f)
{
    return;
}
else
{
    pTLVerts->a = pTexInfo->Alpha;
}