POLYTYPE_ATEX_TRANS, POLYTYPE_PTEX_TRANS - Polygon rendering mode type Allegro
game programming library.
#include <allegro.h>
#define POLYTYPE_ATEX_TRANS
#define POLYTYPE_PTEX_TRANS
Render translucent textures. All the general rules for drawing translucent
things apply. However, these modes have a major limitation: they only work
with memory bitmaps or linear frame buffers (not with banked frame buffers).
Don't even try, they do not check and your program will die horribly (or at
least draw wrong things).