POLYTYPE_GRGB - Polygon rendering mode type Allegro game programming library.

       A  gouraud  shaded polygon which interpolates RGB triplets rather than a single color. In 256-color modes
       this uses the global rgb_map table to convert the result to an 8-bit paletted color, so it must  only  be
       used  after  you  have  set  up  the RGB mapping table! The colors for each vertex are taken from the `c'
       value, which is interpreted as a 24-bit RGB triplet (0xFF0000 is red, 0x00FF00 is green, and 0x0000FF  is
       blue).

       POLYTYPE_GRGB - Polygon rendering mode type Allegro game programming library.

polygon3d(3alleg4), rgb_map(3alleg4), ex3d(3alleg4)

Allegro                                           version 4.4.3                           POLYTYPE_GRGB(3alleg4)

#include<allegro.h>#definePOLYTYPE_GRGB