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POLYTYPE_PTEX(3alleg4) |
Allegro manual |
POLYTYPE_PTEX(3alleg4) |
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(3alleg4), POLYTYPE_ATEX(3alleg4), ex3d(3alleg4)