polytype_gcol(3) - Linux man page
Name
POLYTYPE_GCOL - Polygon rendering mode type Allegro game programming library.
Synopsis
#include <allegro.h>
#define POLYTYPE_GCOL
Description
A single-color gouraud shaded polygon. The colors for each vertex are taken from the 'c' value,
and interpolated across the polygon. This is very fast, but will only work in 256-color modes if your palette contains a smooth gradient between the colors. In
truecolor modes it interprets the color as a packed, display-format value as produced by the makecol() function.
See Also
polygon3d(3), makecol(3), ex3d(3),
exscn3d(3), exzbuf(3)