//init code for bitmap models
void g3_init_polygon_model(void *model_ptr) {
#ifndef NDEBUG
nest_count = 0;
#endif
highest_texture_num = -1;
init_model_sub((ubyte *)model_ptr);
}
static void init_model_sub(ubyte *p)
{
Assert(++nest_count < 1000);
while (w(p) != OP_EOF) {
switch (w(p)) {
case OP_DEFPOINTS: {
int n = w(p+2);
p += n*sizeof(struct vms_vector) + 4;
break;
}
case OP_DEFP_START: {
int n = w(p+2);
p += n*sizeof(struct vms_vector) + 8;
break;
}
case OP_FLATPOLY: {
int nv = w(p+2);
Assert(nv > 2); //must have 3 or more points
// *wp(p+28) = (short)gr_find_closest_color_15bpp(w(p+28));
p += 30 + ((nv&~1)+1)*2;
break;
}
case OP_TMAPPOLY: {
int nv = w(p+2);
Assert(nv > 2); //must have 3 or more points
if (w(p+28) > highest_texture_num)
highest_texture_num = w(p+28);
p += 30 + ((nv&~1)+1)*2 + nv*12;
break;
}
case OP_SORTNORM:
init_model_sub(p+w(p+28));
init_model_sub(p+w(p+30));
p += 32;
break;
case OP_RODBM:
p += 36;
break;
case OP_SUBCALL: {
init_model_sub(p+w(p+16));
p += 20;
break;
}
case OP_GLOW:
p += 4;
break;
default:
Error("invalid polygon model\n");
}
}
}
