// check a polymodel for it's color and return it
int g3_poly_get_color(ubyte *p)
{
int color = 0;
while (w(p) != OP_EOF)
switch (w(p)) {
case OP_DEFPOINTS:
p += w(p+2)*sizeof(struct vms_vector) + 4;
break;
case OP_DEFP_START:
p += w(p+2)*sizeof(struct vms_vector) + 8;
break;
case OP_FLATPOLY: {
int nv = w(p+2);
Assert( nv < MAX_POINTS_PER_POLY );
if (g3_check_normal_facing(vp(p+4),vp(p+16)) > 0) {
#ifdef FADE_FLATPOLY
short c;
unsigned char cc;
int l;
#endif
#ifndef FADE_FLATPOLY
color = gr_find_closest_color_15bpp(w(p + 28));
#else
//l = (32 * model_light) >> 16;
l = f2i(fixmul(i2f(32), (model_light.r+model_light.g+model_light.b)/3));
if (l<0) l = 0;
else if (l>32) l = 32;
cc = gr_find_closest_color_15bpp(w(p+28));
color = gr_fade_table[(l<<8)|cc];
#endif
}
p += 30 + ((nv&~1)+1)*2;
break;
}
case OP_TMAPPOLY: {
int nv = w(p+2);
p += 30 + ((nv&~1)+1)*2 + nv*12;
break;
}
case OP_SORTNORM:
if (g3_check_normal_facing(vp(p+16),vp(p+4)) > 0) //facing
color = g3_poly_get_color(p+w(p+28));
else //not facing
color = g3_poly_get_color(p+w(p+30));
p += 32;
break;
case OP_RODBM:
p+=36;
break;
case OP_SUBCALL:
p += 20;
break;
case OP_GLOW:
p += 4;
break;
default:
Error("invalid polygon model\n");
}
return color;
}
//calls the object interpreter to render an object. The object renderer
//is really a seperate pipeline. returns true if drew
bool g3_draw_polygon_model(ubyte *p,grs_bitmap **model_bitmaps,vms_angvec *anim_angles,g3s_lrgb model_light,fix *glow_values)
{
glow_num = -1; //glow off by default
while (w(p) != OP_EOF)
switch (w(p)) {
case OP_DEFPOINTS: {
int n = w(p+2);
rotate_point_list(Interp_point_list,vp(p+4),n);
p += n*sizeof(struct vms_vector) + 4;
break;
}
case OP_DEFP_START: {
int n = w(p+2);
int s = w(p+4);
rotate_point_list(&Interp_point_list[s],vp(p+8),n);
p += n*sizeof(struct vms_vector) + 8;
break;
}
case OP_FLATPOLY: {
int nv = w(p+2);
Assert( nv < MAX_POINTS_PER_POLY );
if (g3_check_normal_facing(vp(p+4),vp(p+16)) > 0) {
int i;
#ifdef FADE_FLATPOLY
short c;
unsigned char cc;
int l;
#endif
// DPH: Now we treat this color as 15bpp
// gr_setcolor(w(p+28));
#ifndef FADE_FLATPOLY
gr_setcolor(gr_find_closest_color_15bpp(w(p + 28)));
#else
//l = (32 * model_light) >> 16;
l = f2i(fixmul(i2f(32), (model_light.r+model_light.g+model_light.b)/3));
if (l<0) l = 0;
else if (l>32) l = 32;
cc = gr_find_closest_color_15bpp(w(p+28));
c = gr_fade_table[(l<<8)|cc];
gr_setcolor(c);
#endif
for (i=0;i<nv;i++)
point_list[i] = Interp_point_list + wp(p+30)[i];
g3_draw_poly(nv,point_list);
}
p += 30 + ((nv&~1)+1)*2;
break;
}
case OP_TMAPPOLY: {
int nv = w(p+2);
g3s_uvl *uvl_list;
Assert( nv < MAX_POINTS_PER_POLY );
if (g3_check_normal_facing(vp(p+4),vp(p+16)) > 0) {
int i;
g3s_lrgb light, *lrgb_list;
MALLOC(lrgb_list, g3s_lrgb, nv);
//calculate light from surface normal
if (glow_num < 0) //no glow
{
light.r = light.g = light.b = -vm_vec_dot(&View_matrix.fvec,vp(p+16));
light.r = f1_0/4 + (light.r*3)/4;
light.r = fixmul(light.r,model_light.r);
light.g = f1_0/4 + (light.g*3)/4;
light.g = fixmul(light.g,model_light.g);
light.b = f1_0/4 + (light.b*3)/4;
light.b = fixmul(light.b,model_light.b);
}
else //yes glow
{
light.r = light.g = light.b = glow_values[glow_num];
glow_num = -1;
}
//now poke light into l values
uvl_list = (g3s_uvl *) (p+30+((nv&~1)+1)*2);
for (i=0;i<nv;i++)
{
uvl_list[i].l = (light.r+light.g+light.b)/3;
lrgb_list[i].r = light.r;
lrgb_list[i].g = light.g;
lrgb_list[i].b = light.b;
}
for (i=0;i<nv;i++)
point_list[i] = Interp_point_list + wp(p+30)[i];
g3_draw_tmap(nv,point_list,uvl_list,lrgb_list,model_bitmaps[w(p+28)]);
d_free(lrgb_list);
}
p += 30 + ((nv&~1)+1)*2 + nv*12;
break;
}
case OP_SORTNORM:
if (g3_check_normal_facing(vp(p+16),vp(p+4)) > 0) { //facing
//draw back then front
g3_draw_polygon_model(p+w(p+30),model_bitmaps,anim_angles,model_light,glow_values);
g3_draw_polygon_model(p+w(p+28),model_bitmaps,anim_angles,model_light,glow_values);
}
else { //not facing. draw front then back
g3_draw_polygon_model(p+w(p+28),model_bitmaps,anim_angles,model_light,glow_values);
g3_draw_polygon_model(p+w(p+30),model_bitmaps,anim_angles,model_light,glow_values);
}
p += 32;
break;
case OP_RODBM: {
g3s_point rod_bot_p,rod_top_p;
g3s_lrgb rodbm_light = { f1_0, f1_0, f1_0 };
g3_rotate_point(&rod_bot_p,vp(p+20));
g3_rotate_point(&rod_top_p,vp(p+4));
g3_draw_rod_tmap(model_bitmaps[w(p+2)],&rod_bot_p,w(p+16),&rod_top_p,w(p+32),rodbm_light);
p+=36;
break;
}
case OP_SUBCALL: {
vms_angvec *a;
if (anim_angles)
a = &anim_angles[w(p+2)];
else
a = &zero_angles;
g3_start_instance_angles(vp(p+4),a);
g3_draw_polygon_model(p+w(p+16),model_bitmaps,anim_angles,model_light,glow_values);
g3_done_instance();
p += 20;
break;
}
case OP_GLOW:
if (glow_values)
glow_num = w(p+2);
p += 4;
break;
default:
Error("invalid polygon model\n");
}
return 1;
}
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 i, 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;
}
}
}
