Provided by: liballegro-doc_4.2.2-3_all bug


       POLYTYPE_PTEX - Polygon rendering mode type Allegro game programming library.


       #include <allegro.h>

       #define POLYTYPE_PTEX


       A  perspective-correct  texture  mapped  polygon.  This uses the `z' value from the vertex
       structure as well as the u/v coordinates, so textures are displayed  correctly  regardless
       of  the angle they are viewed from. Because it involves division calculations in the inner
       texture mapping loop, this mode is a lot slower than POLYTYPE_ATEX, and it  uses  floating
       point  so  it  will  be very slow on anything less than a Pentium (even with an FPU, a 486
       can't overlap floating point division with other integer operations like the Pentium can).


       polygon3d(3alleg), POLYTYPE_ATEX(3alleg), ex3d(3alleg)