polytype_ptex(3) - Linux man page
Name
POLYTYPE_PTEX - Polygon rendering mode type Allegro game programming library.
Synopsis
#include <allegro.h>
#define POLYTYPE_PTEX
Description
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).
See Also
polygon3d(3), polytype_atex(3), ex3d(3)
Referenced By
polytype_ptex_lit(3),
polytype_ptex_mask(3)