NAME
scene_polygon3d, scene_polygon3d_f - Puts a polygon in the scene
rendering list. Allegro game programming library.
SYNOPSIS
#include <allegro.h>
int scene_polygon3d(int type, BITMAP *texture, int vc, V3D *vtx[]);
int scene_polygon3d_f(int type, BITMAP *texture, int vc, V3D_f *vtx[]);
DESCRIPTION
Puts a polygon in the rendering list. Nothing is really rendered at
this moment. Should be called between clear_scene() and render_scene().
Arguments are the same as for polygon3d(), except the bitmap is
missing. The one passed to clear_scene() will be used.
Unlike polygon3d(), the polygon may be concave or self-intersecting.
Shapes that penetrate one another may look OK, but they are not really
handled by this code.
Note that the texture is stored as a pointer only, and you should keep
the actual bitmap around until render_scene(), where it is used.
Since the FLAT style is implemented with the low-level hline()
function, the FLAT style is subject to DRAW_MODEs. All these modes are
valid. Along with the polygon, this mode will be stored for the
rendering moment, and also all the other related variables (color_map
pointer, pattern pointer, anchor, blender values).
The settings of the CPU_MMX and CPU_3DNOW flags of the cpu_capabilities
global variable on entry in this routine affect the choice of low-level
asm routine that will be used by render_scene() for this polygon.
RETURN VALUE
Returns zero on success, or a negative number if it won't be rendered
for lack of a rendering routine.
SEE ALSO
create_scene(3alleg), clear_scene(3alleg), render_scene(3alleg),
destroy_scene(3alleg), polygon3d(3alleg), cpu_capabilities(3alleg),
exscn3d(3alleg)