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ports/games/shockolate/files/patch-src_Libraries_3D_Source_interp.c
Vasily Postnicov 96424406ee games/shockolate: unbreak build on arm64 
Incoporate a patch from upstream which eliminates the wrong use of stdarg

PR:	232657
2022-03-23 16:21:37 +01:00

719 lines
22 KiB
C
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--- src/Libraries/3D/Source/interp.c.orig 2022-03-23 14:33:24 UTC
+++ src/Libraries/3D/Source/interp.c
@@ -82,7 +82,7 @@ along with this program. If not, see <http://www.gnu.
#include "lg.h"
//#include <String.h>
//#include <_stdarg.h>
-#include <stdarg.h>
+//#include <stdarg.h>
// prototypes;
uchar *do_eof(uchar *);
@@ -133,20 +133,9 @@ extern void g3_light_obj(g3s_phandle norm, g3s_phandle
void interpreter_loop(uchar *object);
-void FlipVector(short n, g3s_vector *vec);
-void FlipLong(long *lng);
-void FlipShort(short *sh);
-
// globals
extern char gour_flag; // gour flag for actual polygon drawer
-// clang-format off
-#ifdef stereo_on
- temp_vector g3s_vector <>
- tmp_address dd ?
-#endif
-// clang-format on
-
#define OP_EOF 0
#define OP_JNORM 1
@@ -194,7 +183,7 @@ grs_bitmap *_vtext_tab[N_VTEXT_ENTRIES] = {
// clang-format on
// ptr to stack parms
-va_list parm_ptr;
+ubyte *parm_ptr; //va_list parm_ptr;
// space for parms to objects
char parm_data[PARM_DATA_SIZE];
@@ -205,28 +194,9 @@ char _itrp_check_flg = 0;
// MLA not used, - uchar *struct_ptr;
-/*
-// process the next opcode
-next macro opsize
- ifnb <opsize>
- add ebp,opsize // point at next opcode
- endif
- jmp interpreter_loop
- endm
-
-call_next macro
- call interpreter_loop
- endm
-*/
-
// c callable context setting routines
-// set virtual color eax to ebx
-// inlined in 3d.h for now....
-// g3_setvcolor:
-// add eax, _vcolor_tab
-// mov byte ptr [eax], bl
-// takes ptr to object in eax. trashes all but ebp
+// takes ptr to object
// this is bullshit, man, takes ptr to object on the freakin' stack!
void g3_interpret_object(ubyte *object_ptr, ...) {
int i, scale;
@@ -242,100 +212,13 @@ void g3_interpret_object(ubyte *object_ptr, ...) {
opcode_table[OP_JNORM] = &do_ljnorm;
}
-// clang-format off
-#ifdef stereo_on
- test _g3d_stereo,1
- jz g3_interpret_object_raw
- // call normally if eyesep/distance is small enough (angular change is small)
- // transform 0,0,0 to get the z distance
- mov eax,_view_position.x
- fixmul view_matrix.m3
- mov ecx,eax
+ // get addr of stack parms
+ parm_ptr = (&object_ptr) + sizeof(object_ptr); //va_start(parm_ptr, object_ptr);
- mov eax,_view_position.y
- fixmul view_matrix.m6
- add ecx,eax
-
- mov eax,_view_position.z
- fixmul view_matrix.m9
- add ecx,eax
- neg ecx
-
- mov eax,_g3d_eyesep_raw
- fixmul _matrix_scale.z
- fixdiv ecx
-
- cmp eax,STEREO_DIST_LIM
- jl g3_interpret_object_raw
-
- mov _g3d_stereo,0 // kill stereo
- pop eax // grab real return address
- mov tmp_address,eax // save it for later
-
- push ret1 // fake out the poor thing so it jumps back here
- jmp g3_interpret_object_raw
-
- // shift view_position
- ret1:
- // save the current position
- lea edi,temp_vector
- lea esi,_view_position
- movsd
- movsd
- movsd
-
- mov eax,_g3d_eyesep_raw
- mov ebx,_matrix_scale.x
- fixdiv ebx // make ebx the scaled down eyesep
- mov ebx,eax
-
- // get x slewed over (top row of current vector and scale)
- mov eax,view_matrix.m1
- fixmul ebx
- add _view_position.x,eax
-
- mov eax,view_matrix.m4
- fixmul ebx
- add _view_position.y,eax
-
- mov eax,view_matrix.m7
- fixmul ebx
- add _view_position.z,eax
-
- set_rt_canv // install rt canvas
- // this time when you call it, its still all set
- call g3_interpret_object_raw
- mov _g3d_stereo,1 // restore stereo
- set_lt_canv // restore left canvas
-
- // restore view position
- lea esi,temp_vector
- lea edi,_view_position
- movsd
- movsd
- movsd
-
- // weeee, pretend we were here all along, but I suppose we
- // could just jmp there
- push tmp_address
-
- ret
-g3_interpret_object_raw:
-#endif
- // clang-format on
-
- va_start(parm_ptr, object_ptr); // get addr of stack parms
-
- // MLA- not used ever?
- /*
- mov eax,16[esp] // get angle
- mov struct_ptr,eax*/
-
// mark res points as free
LG_memset(resbuf, 0, N_RES_POINTS * 4);
// scale view vector for scale
- FlipShort((short *)(object_ptr - 2));
scale = *(short *)(object_ptr - 2);
if (scale) {
if (scale > 0) {
@@ -383,7 +266,6 @@ g3_interpret_object_raw:
// interpret the object
void interpreter_loop(uchar *object) {
do {
- FlipShort((short *)object);
object = ((uchar * (*)(uchar *)) opcode_table[*(short *)object])(object);
} while (object);
}
@@ -400,9 +282,6 @@ uchar *do_eof(uchar *opcode) // and return extra level
// v=viewer coords-p
// if (n*v)<0 then branch to lbl
uchar *do_jnorm(uchar *opcode) {
- FlipShort((short *)(opcode + 2));
- FlipVector(2, (g3s_vector *)(opcode + 4));
-
if (g3_check_normal_facing((g3s_vector *)(opcode + 16), (g3s_vector *)(opcode + 4)))
return opcode + 28; // surface is visible. continue
else
@@ -411,9 +290,6 @@ uchar *do_jnorm(uchar *opcode) {
// lnres pnt0,pnt1
uchar *do_lnres(uchar *opcode) {
- FlipShort((short *)(opcode + 2));
- FlipShort((short *)(opcode + 4));
-
g3_draw_line(resbuf[*(unsigned short *)(opcode + 2)], resbuf[*(unsigned short *)(opcode + 4)]);
return opcode + 6;
}
@@ -421,14 +297,10 @@ uchar *do_lnres(uchar *opcode) {
uchar *do_multires(uchar *opcode) {
short count;
- FlipShort((short *)(opcode + 2));
- FlipShort((short *)(opcode + 4));
-
count = *(short *)(opcode + 2);
- FlipVector(count, (g3s_vector *)(opcode + 6));
g3_transform_list(count, (g3s_phandle *)(resbuf + (*(short *)(opcode + 4))), (g3s_vector *)(opcode + 6));
- return opcode + 6 + (count * 12); // fixup: ebp = esi + ecx*12
+ return opcode + 6 + (count * 12);
}
// this should do some cute matrix transform trick, not this ugly hack
@@ -459,68 +331,22 @@ uchar *do_scaleres(uchar *opcode) {
return opcode;
*/
- /*
- movzx ecx,w 2[ebp] // get count
- movzx eax,w 4[ebp] // get scale factor
- movzx ebx,w 6[ebp] // get dest start num
- mov eax,d parm_data [eax]
- add ebp,8
- // lea esi,[ebp] // get vector array start
- do_sr_loop:
- push eax
- push ecx
- push ebx
- mov ecx, eax
- mov esi, OFFSET temp_pnt
- // do better scaling here.....
- imul d [ebp]
- shrd eax,edx,16
- mov [esi],eax
- mov eax, ecx
- imul d 4[ebp]
- shrd eax,edx,16
- mov 4[esi],eax
- mov eax, ecx
- imul d 8[ebp]
- shrd eax,edx,16
- mov 8[esi],eax
- call g3_transform_point
- pop ebx
- mov resbuf[ebx*4],edi
- inc ebx
- add ebp,12
- lea esi,[ebp]
- pop ecx
- pop eax
- dec ecx
- jnz do_sr_loop
- next
- */
return 0;
}
// these put the address of an old point in the interpreter respnt array
// note they will get freed when the interpreter punts
uchar *do_vpnt_p(uchar *opcode) {
- FlipShort((short *)(opcode + 2));
- FlipShort((short *)(opcode + 4));
-
resbuf[*(short *)(opcode + 4)] = (g3s_point *)(*(long *)(parm_data + (*(unsigned short *)(opcode + 2))));
return opcode + 6;
}
uchar *do_vpnt_v(uchar *opcode) {
- FlipShort((short *)(opcode + 2));
- FlipShort((short *)(opcode + 4));
-
resbuf[*(short *)(opcode + 4)] = _vpoint_tab[(*(unsigned short *)(opcode + 2)) >> 2];
return opcode + 6;
}
uchar *do_defres(uchar *opcode) {
- FlipShort((short *)(opcode + 2));
- FlipVector(1, (g3s_vector *)(opcode + 4));
-
resbuf[*(unsigned short *)(opcode + 2)] = g3_transform_point((g3s_vector *)(opcode + 4));
return opcode + 16;
}
@@ -528,10 +354,6 @@ uchar *do_defres(uchar *opcode) {
uchar *do_defres_i(uchar *opcode) {
g3s_phandle temphand;
- FlipShort((short *)(opcode + 2));
- FlipShort((short *)(opcode + 16));
- FlipVector(1, (g3s_vector *)(opcode + 4));
-
temphand = g3_transform_point((g3s_vector *)(opcode + 4));
resbuf[*(unsigned short *)(opcode + 2)] = temphand;
@@ -545,13 +367,9 @@ uchar *do_defres_i(uchar *opcode) {
uchar *do_polyres(uchar *opcode) {
int count, count2;
- FlipShort((short *)(opcode + 2));
-
count2 = count = *(unsigned short *)(opcode + 2);
opcode += 4;
while (--count >= 0) {
- FlipShort((short *)(opcode + (count << 1)));
-
poly_buf[count] = resbuf[*(unsigned short *)(opcode + (count << 1))];
}
@@ -567,10 +385,6 @@ uchar *do_polyres(uchar *opcode) {
}
uchar *do_sortnorm(uchar *opcode) {
- FlipVector(2, (g3s_vector *)(opcode + 2));
- FlipShort((short *)(opcode + 26));
- FlipShort((short *)(opcode + 28));
-
if (g3_check_normal_facing((g3s_vector *)(opcode + 14), (g3s_vector *)(opcode + 2))) {
interpreter_loop(opcode + (*(short *)(opcode + 26)));
interpreter_loop(opcode + (*(short *)(opcode + 28)));
@@ -583,25 +397,18 @@ uchar *do_sortnorm(uchar *opcode) {
}
uchar *do_goursurf(uchar *opcode) {
- FlipShort((short *)(opcode + 2));
-
gouraud_base = (*(short *)(opcode + 2)) << 8;
_itrp_gour_flg = 2;
return opcode + 4;
}
uchar *do_gour_p(uchar *opcode) {
- FlipShort((short *)(opcode + 2));
-
gouraud_base = parm_data[(*(short *)(opcode + 2))] << 8;
_itrp_gour_flg = 2;
return opcode + 4;
}
uchar *do_gour_vc(uchar *opcode) {
-
- FlipShort((short *)(opcode + 2));
-
gouraud_base = ((long)_vcolor_tab[*(unsigned short *)(opcode + 2)]) << 8;
_itrp_gour_flg = 2;
return opcode + 4;
@@ -610,8 +417,6 @@ uchar *do_gour_vc(uchar *opcode) {
uchar *do_draw_mode(uchar *opcode) {
short flags;
- FlipShort((short *)(opcode + 2));
-
flags = *(short *)(opcode + 2);
_itrp_wire_flg = flags >> 8;
flags &= 0x00ff;
@@ -628,15 +433,10 @@ uchar *do_setshade(uchar *opcode) {
uchar *new_opcode;
g3s_phandle temphand;
- FlipShort((short *)(opcode + 2));
-
i = *(unsigned short *)(opcode + 2); // get number of shades
new_opcode = opcode + 4 + (i << 2);
while (--i >= 0) {
- FlipShort((short *)(opcode + 4 + (i << 2)));
- FlipShort((short *)(opcode + 6 + (i << 2)));
-
temphand = resbuf[*(unsigned short *)(opcode + 4 + (i << 2))]; // get point handle
temphand->i = *(short *)(opcode + 6 + (i << 2));
temphand->p3_flags |= PF_I;
@@ -650,14 +450,9 @@ uchar *do_rgbshades(uchar *opcode) {
int i;
g3s_phandle temphand;
- FlipShort((short *)(opcode + 2));
-
i = *(unsigned short *)(opcode + 2); // get number of shades
new_opcode = opcode + 4;
while (--i >= 0) {
- FlipShort((short *)new_opcode);
- FlipLong((long *)(new_opcode + 2));
-
temphand = resbuf[*(unsigned short *)new_opcode]; // get point handle
temphand->rgb = *(long *)(new_opcode + 2);
temphand->p3_flags |= PF_RGB;
@@ -669,10 +464,6 @@ uchar *do_rgbshades(uchar *opcode) {
uchar *do_setuv(uchar *opcode) {
g3s_phandle temphand;
- FlipShort((short *)(opcode + 2));
- FlipLong((long *)(opcode + 4));
- FlipLong((long *)(opcode + 8));
-
temphand = resbuf[*(unsigned short *)(opcode + 2)]; // get point handle
temphand->uv.u = (*(unsigned long *)(opcode + 4)) >> 8;
temphand->uv.v = (*(unsigned long *)(opcode + 8)) >> 8;
@@ -685,15 +476,9 @@ uchar *do_uvlist(uchar *opcode) {
int i;
g3s_phandle temphand;
- FlipShort((short *)(opcode + 2));
-
i = *(unsigned short *)(opcode + 2); // get number of shades
opcode += 4;
while (--i >= 0) {
- FlipShort((short *)opcode);
- FlipLong((long *)(opcode + 2));
- FlipLong((long *)(opcode + 6));
-
temphand = resbuf[*(unsigned short *)opcode]; // get point handle
temphand->uv.u = (*(unsigned long *)(opcode + 2)) >> 8;
temphand->uv.v = (*(unsigned long *)(opcode + 6)) >> 8;
@@ -706,24 +491,18 @@ uchar *do_uvlist(uchar *opcode) {
// should we be hacking _itrp_gour_flg?
uchar *do_setcolor(uchar *opcode) {
- FlipShort((short *)(opcode + 2));
-
gr_set_fcolor(*(unsigned short *)(opcode + 2));
_itrp_gour_flg = 0;
return opcode + 4;
}
uchar *do_getvcolor(uchar *opcode) {
- FlipShort((short *)(opcode + 2));
-
gr_set_fcolor(_vcolor_tab[*(unsigned short *)(opcode + 2)]);
_itrp_gour_flg = 0;
return opcode + 4;
}
uchar *do_getpcolor(uchar *opcode) {
- FlipShort((short *)(opcode + 2));
-
gr_set_fcolor(*(unsigned short *)(parm_data + (*(unsigned short *)(opcode + 2))));
_itrp_gour_flg = 0;
return opcode + 4;
@@ -732,9 +511,6 @@ uchar *do_getpcolor(uchar *opcode) {
uchar *do_getvscolor(uchar *opcode) {
short temp;
- FlipShort((short *)(opcode + 2));
- FlipShort((short *)(opcode + 4));
-
temp = (byte)_vcolor_tab[*(unsigned short *)(opcode + 2)];
temp |= (*(short *)(opcode + 4)) << 8;
gr_set_fcolor(gr_get_light_tab()[temp]);
@@ -744,9 +520,6 @@ uchar *do_getvscolor(uchar *opcode) {
uchar *do_getpscolor(uchar *opcode) {
short temp;
- FlipShort((short *)(opcode + 2));
- FlipShort((short *)(opcode + 4));
-
temp = (unsigned short)parm_data[*(unsigned short *)(opcode + 2)];
temp &= 0x00ff;
temp |= (*(short *)(opcode + 4)) << 8;
@@ -755,70 +528,39 @@ uchar *do_getpscolor(uchar *opcode) {
}
uchar *do_x_rel(uchar *opcode) {
- FlipShort((short *)(opcode + 2));
- FlipShort((short *)(opcode + 4));
- FlipLong((long *)(opcode + 6));
-
resbuf[*(short *)(opcode + 2)] = g3_copy_add_delta_x(resbuf[*(short *)(opcode + 4)], *(fix *)(opcode + 6));
return opcode + 10;
}
uchar *do_y_rel(uchar *opcode) {
- FlipShort((short *)(opcode + 2));
- FlipShort((short *)(opcode + 4));
- FlipLong((long *)(opcode + 6));
-
resbuf[*(short *)(opcode + 2)] = g3_copy_add_delta_y(resbuf[*(short *)(opcode + 4)], *(fix *)(opcode + 6));
return opcode + 10;
}
uchar *do_z_rel(uchar *opcode) {
- FlipShort((short *)(opcode + 2));
- FlipShort((short *)(opcode + 4));
- FlipLong((long *)(opcode + 6));
-
resbuf[*(short *)(opcode + 2)] = g3_copy_add_delta_z(resbuf[*(short *)(opcode + 4)], *(fix *)(opcode + 6));
return opcode + 10;
}
uchar *do_xy_rel(uchar *opcode) {
- FlipShort((short *)(opcode + 2));
- FlipShort((short *)(opcode + 4));
- FlipLong((long *)(opcode + 6));
- FlipLong((long *)(opcode + 10));
-
resbuf[*(short *)(opcode + 2)] =
g3_copy_add_delta_xy(resbuf[*(short *)(opcode + 4)], *(fix *)(opcode + 6), *(fix *)(opcode + 10));
return opcode + 14;
}
uchar *do_xz_rel(uchar *opcode) {
- FlipShort((short *)(opcode + 2));
- FlipShort((short *)(opcode + 4));
- FlipLong((long *)(opcode + 6));
- FlipLong((long *)(opcode + 10));
-
resbuf[*(short *)(opcode + 2)] =
g3_copy_add_delta_xz(resbuf[*(short *)(opcode + 4)], *(fix *)(opcode + 6), *(fix *)(opcode + 10));
return opcode + 14;
}
uchar *do_yz_rel(uchar *opcode) {
- FlipShort((short *)(opcode + 2));
- FlipShort((short *)(opcode + 4));
- FlipLong((long *)(opcode + 6));
- FlipLong((long *)(opcode + 10));
-
resbuf[*(short *)(opcode + 2)] =
g3_copy_add_delta_yz(resbuf[*(short *)(opcode + 4)], *(fix *)(opcode + 6), *(fix *)(opcode + 10));
return opcode + 14;
}
uchar *do_icall_p(uchar *opcode) {
- FlipVector(1, (g3s_vector *)(opcode + 6));
- FlipShort((short *)(opcode + 18));
- FlipLong((long *)(opcode + 2));
-
g3_start_object_angles_x((g3s_vector *)(opcode + 6), *(fixang *)(parm_data + (*(unsigned short *)(opcode + 18))));
interpreter_loop((uchar *)(*(long *)(opcode + 2)));
g3_end_object();
@@ -827,10 +569,6 @@ uchar *do_icall_p(uchar *opcode) {
}
uchar *do_icall_h(uchar *opcode) {
- FlipVector(1, (g3s_vector *)(opcode + 6));
- FlipShort((short *)(opcode + 18));
- FlipLong((long *)(opcode + 2));
-
g3_start_object_angles_y((g3s_vector *)(opcode + 6), *(fixang *)(parm_data + (*(unsigned short *)(opcode + 18))));
interpreter_loop((uchar *)(*(long *)(opcode + 2)));
g3_end_object();
@@ -839,10 +577,6 @@ uchar *do_icall_h(uchar *opcode) {
}
uchar *do_icall_b(uchar *opcode) {
- FlipVector(1, (g3s_vector *)(opcode + 6));
- FlipShort((short *)(opcode + 18));
- FlipLong((long *)(opcode + 2));
-
g3_start_object_angles_z((g3s_vector *)(opcode + 6), *(fixang *)(parm_data + (*(unsigned short *)(opcode + 18))));
interpreter_loop((uchar *)(*(long *)(opcode + 2)));
g3_end_object();
@@ -851,8 +585,6 @@ uchar *do_icall_b(uchar *opcode) {
}
uchar *do_sfcal(uchar *opcode) {
- FlipShort((short *)(opcode + 2));
-
interpreter_loop(opcode + (*(unsigned short *)(opcode + 2)));
return opcode + 4;
}
@@ -862,10 +594,6 @@ uchar *do_getparms(uchar *opcode) {
long *src, *dest;
int count;
- FlipShort((short *)(opcode + 2));
- FlipShort((short *)(opcode + 4));
- FlipShort((short *)(opcode + 6));
-
dest = (long *)(parm_data + (*(unsigned short *)(opcode + 2)));
src = (long *)(parm_ptr + (*(unsigned short *)(opcode + 4)));
count = *(unsigned short *)(opcode + 6);
@@ -880,10 +608,6 @@ uchar *do_getparms_i(uchar *opcode) {
long *src, *dest;
int count;
- FlipShort((short *)(opcode + 2));
- FlipShort((short *)(opcode + 4));
- FlipShort((short *)(opcode + 6));
-
dest = *(long **)(parm_data + (*(unsigned short *)(opcode + 2)));
src = (long *)(parm_ptr + (*(unsigned short *)(opcode + 4)));
count = *(unsigned short *)(opcode + 6);
@@ -894,31 +618,7 @@ uchar *do_getparms_i(uchar *opcode) {
}
uchar *do_dbg(uchar *opcode) {
-// clang-format off
-#ifdef _itrp_dbg
- mov ax, w 4[ebp] // code
- and ax, _itrp_dbg_mask // mask in current debug mode
- jz dbg_end // none currently on
- cmp ax, DBG_POLY_ID // itrp_pcode
- jnz dbg_nxt1
- mov ax, w 6[ebp] // pgon_id
- cmp ax,_pgon_id_low
- jl pgon_skip
- cmp ax,_pgon_id_high
- jle dbg_end
-pgon_skip:
- movsx eax,w 2[ebp] // skip whatever
- next eax
-dbg_nxt1:
- cmp ax, DBG_POLY_MAX
- jnz dbg_end
- mov ax, w 6[ebp]
- mov _pgon_max, ax
-// jmp dbg_end
-#endif
- // clang-format on
- return opcode +
- 8;
+ return opcode + 8;
}
extern void (*g3_tmap_func)();
@@ -928,13 +628,9 @@ uchar *do_tmap_op(uchar *opcode) {
int count, count2;
short temp;
- FlipShort((short *)(opcode + 2));
- FlipShort((short *)(opcode + 4));
-
count2 = count = *(unsigned short *)(opcode + 4);
count--;
do {
- FlipShort((short *)(opcode + 6 + (count << 1)));
temp = *(short *)(opcode + 6 + (count << 1));
poly_buf[count] = resbuf[temp];
@@ -953,9 +649,6 @@ uchar *do_tmap_op(uchar *opcode) {
// if (n*v)<0 then branch to lbl
// does lit version of jnorm, for flat lighting
uchar *do_ljnorm(uchar *opcode) {
- FlipShort((short *)(opcode + 2));
- FlipVector(2, (g3s_vector *)(opcode + 4));
-
if (g3_check_normal_facing((g3s_vector *)(opcode + 16), (g3s_vector *)(opcode + 4))) {
g3_light_obj((g3s_phandle)(opcode + 4), (g3s_phandle)(opcode + 16));
return opcode + 28;
@@ -967,9 +660,6 @@ uchar *do_ljnorm(uchar *opcode) {
uchar *do_ldjnorm(uchar *opcode) {
fix temp;
- FlipShort((short *)(opcode + 2));
- FlipVector(2, (g3s_vector *)(opcode + 4));
-
if (g3_check_normal_facing((g3s_vector *)(opcode + 16), (g3s_vector *)(opcode + 4))) {
temp = g3_vec_dotprod(&_g3d_light_vec, (g3s_vector *)(opcode + 4));
temp <<= 1;
@@ -986,61 +676,7 @@ uchar *do_ldjnorm(uchar *opcode) {
return opcode + (*(short *)(opcode + 2)); // surface not visible
}
-// MLA - this routine doesn't appear to ever be called anywhere
-/*
-// check if a surface is facing the viewer and save the view vector and
-// its dot product with everything. Normalizes view vec and stuff
-// takes esi=point on surface, edi=surface normal (can be unnormalized)
-// trashes eax,ebx,ecx,edx. returns al=true & sign set, if facing
-g3_light_check_normal_facing:
- call g3_eval_view
- mov eax,_g3d_view_vec.x
- imul [edi].x
- mov ebx,eax
- mov ecx,edx
-
- mov eax,_g3d_view_vec.y
- imul [edi].y
- add ebx,eax
- adc ecx,edx
-
- mov eax,_g3d_view_vec.z
- imul [edi].z
- add eax,ebx
- adc edx,ecx
-
- // now save this to ldotv
-
- sets al // al=true if facing
-
- ret
-*/
-
-void FlipShort(short *sh) {
- /*uchar temp;
- uchar *src = (uchar *) sh;
-
- temp = src[0];
- src[0] = src[1];
- src[1] = temp;*/
-}
-
-void FlipLong(long *lng) {
- /*short *src = (short *) lng;
- short temp;
-
- temp = src[0];
- src[0] = src[1];
- src[1] = temp;
-
- FlipShort(src);
- FlipShort(src+1);*/
-}
-
-void FlipVector(short n, g3s_vector *vec) {
- /*int i,j;
-
- for (i=0; i<n; i++, vec++)
- for (j=0; j<3; j++)
- FlipLong((long *) &vec->xyz[j]);*/
-}
+//external calls to these do-nothing functions can be safely removed
+void FlipShort(short *sh) {}
+void FlipLong(long *lng) {}
+void FlipVector(short n, g3s_vector *vec) {}
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