mirror of
https://git.code.sf.net/p/quake/quakeforge-old
synced 2024-11-22 11:51:17 +00:00
216 lines
5.4 KiB
ArmAsm
216 lines
5.4 KiB
ArmAsm
/*
|
|
Copyright (C) 1996-1997 Id Software, Inc.
|
|
|
|
This program is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License
|
|
as published by the Free Software Foundation; either version 2
|
|
of the License, or (at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
|
|
See the GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
|
|
*/
|
|
//
|
|
// r_aliasa.s
|
|
// x86 assembly-language Alias model transform and project code.
|
|
//
|
|
|
|
#include "asm_i386.h"
|
|
#include "quakeasm.h"
|
|
#include "asm_draw.h"
|
|
#include "d_ifacea.h"
|
|
|
|
#if id386
|
|
|
|
.data
|
|
Ltemp0: .long 0
|
|
Ltemp1: .long 0
|
|
|
|
.text
|
|
|
|
#define pfv0 8+4
|
|
#define pfv1 8+8
|
|
#define out 8+12
|
|
|
|
.globl C(R_Alias_clip_bottom)
|
|
C(R_Alias_clip_bottom):
|
|
pushl %esi
|
|
pushl %edi
|
|
|
|
movl pfv0(%esp),%esi
|
|
movl pfv1(%esp),%edi
|
|
|
|
movl C(r_refdef)+rd_aliasvrectbottom,%eax
|
|
|
|
LDoForwardOrBackward:
|
|
|
|
movl fv_v+4(%esi),%edx
|
|
movl fv_v+4(%edi),%ecx
|
|
|
|
cmpl %ecx,%edx
|
|
jl LDoForward
|
|
|
|
movl fv_v+4(%esi),%ecx
|
|
movl fv_v+4(%edi),%edx
|
|
movl pfv0(%esp),%edi
|
|
movl pfv1(%esp),%esi
|
|
|
|
LDoForward:
|
|
|
|
subl %edx,%ecx
|
|
subl %edx,%eax
|
|
movl %ecx,Ltemp1
|
|
movl %eax,Ltemp0
|
|
fildl Ltemp1
|
|
fildl Ltemp0
|
|
movl out(%esp),%edx
|
|
movl $2,%eax
|
|
|
|
fdivp %st(0),%st(1) // scale
|
|
|
|
LDo3Forward:
|
|
fildl fv_v+0(%esi) // fv0v0 | scale
|
|
fildl fv_v+0(%edi) // fv1v0 | fv0v0 | scale
|
|
fildl fv_v+4(%esi) // fv0v1 | fv1v0 | fv0v0 | scale
|
|
fildl fv_v+4(%edi) // fv1v1 | fv0v1 | fv1v0 | fv0v0 | scale
|
|
fildl fv_v+8(%esi) // fv0v2 | fv1v1 | fv0v1 | fv1v0 | fv0v0 | scale
|
|
fildl fv_v+8(%edi) // fv1v2 | fv0v2 | fv1v1 | fv0v1 | fv1v0 | fv0v0 |
|
|
// scale
|
|
fxch %st(5) // fv0v0 | fv0v2 | fv1v1 | fv0v1 | fv1v0 | fv1v2 |
|
|
// scale
|
|
fsubr %st(0),%st(4) // fv0v0 | fv0v2 | fv1v1 | fv0v1 | fv1v0-fv0v0 |
|
|
// fv1v2 | scale
|
|
fxch %st(3) // fv0v1 | fv0v2 | fv1v1 | fv0v0 | fv1v0-fv0v0 |
|
|
// fv1v2 | scale
|
|
fsubr %st(0),%st(2) // fv0v1 | fv0v2 | fv1v1-fv0v1 | fv0v0 |
|
|
// fv1v0-fv0v0 | fv1v2 | scale
|
|
fxch %st(1) // fv0v2 | fv0v1 | fv1v1-fv0v1 | fv0v0 |
|
|
// fv1v0-fv0v0 | fv1v2 | scale
|
|
fsubr %st(0),%st(5) // fv0v2 | fv0v1 | fv1v1-fv0v1 | fv0v0 |
|
|
// fv1v0-fv0v0 | fv1v2-fv0v2 | scale
|
|
fxch %st(6) // scale | fv0v1 | fv1v1-fv0v1 | fv0v0 |
|
|
// fv1v0-fv0v0 | fv1v2-fv0v2 | fv0v2
|
|
fmul %st(0),%st(4) // scale | fv0v1 | fv1v1-fv0v1 | fv0v0 |
|
|
// (fv1v0-fv0v0)*scale | fv1v2-fv0v2 | fv0v2
|
|
addl $12,%edi
|
|
fmul %st(0),%st(2) // scale | fv0v1 | (fv1v1-fv0v1)*scale | fv0v0 |
|
|
// (fv1v0-fv0v0)*scale | fv1v2-fv0v2 | fv0v2
|
|
addl $12,%esi
|
|
addl $12,%edx
|
|
fmul %st(0),%st(5) // scale | fv0v1 | (fv1v1-fv0v1)*scale | fv0v0 |
|
|
// (fv1v0-fv0v0)*scale | (fv1v2-fv0v2)*scale |
|
|
// fv0v2
|
|
fxch %st(3) // fv0v0 | fv0v1 | (fv1v1-fv0v1)*scale | scale |
|
|
// (fv1v0-fv0v0)*scale | (fv1v2-fv0v2)*scale |
|
|
// fv0v2
|
|
faddp %st(0),%st(4) // fv0v1 | (fv1v1-fv0v1)*scale | scale |
|
|
// fv0v0+(fv1v0-fv0v0)*scale |
|
|
// (fv1v2-fv0v2)*scale | fv0v2
|
|
faddp %st(0),%st(1) // fv0v1+(fv1v1-fv0v1)*scale | scale |
|
|
// fv0v0+(fv1v0-fv0v0)*scale |
|
|
// (fv1v2-fv0v2)*scale | fv0v2
|
|
fxch %st(4) // fv0v2 | scale | fv0v0+(fv1v0-fv0v0)*scale |
|
|
// (fv1v2-fv0v2)*scale | fv0v1+(fv1v1-fv0v1)*scale
|
|
faddp %st(0),%st(3) // scale | fv0v0+(fv1v0-fv0v0)*scale |
|
|
// fv0v2+(fv1v2-fv0v2)*scale |
|
|
// fv0v1+(fv1v1-fv0v1)*scale
|
|
fxch %st(1) // fv0v0+(fv1v0-fv0v0)*scale | scale |
|
|
// fv0v2+(fv1v2-fv0v2)*scale |
|
|
// fv0v1+(fv1v1-fv0v1)*scale
|
|
fadds float_point5
|
|
fxch %st(3) // fv0v1+(fv1v1-fv0v1)*scale | scale |
|
|
// fv0v2+(fv1v2-fv0v2)*scale |
|
|
// fv0v0+(fv1v0-fv0v0)*scale
|
|
fadds float_point5
|
|
fxch %st(2) // fv0v2+(fv1v2-fv0v2)*scale | scale |
|
|
// fv0v1+(fv1v1-fv0v1)*scale |
|
|
// fv0v0+(fv1v0-fv0v0)*scale
|
|
fadds float_point5
|
|
fxch %st(3) // fv0v0+(fv1v0-fv0v0)*scale | scale |
|
|
// fv0v1+(fv1v1-fv0v1)*scale |
|
|
// fv0v2+(fv1v2-fv0v2)*scale
|
|
fistpl fv_v+0-12(%edx) // scale | fv0v1+(fv1v1-fv0v1)*scale |
|
|
// fv0v2+(fv1v2-fv0v2)*scale
|
|
fxch %st(1) // fv0v1+(fv1v1-fv0v1)*scale | scale |
|
|
// fv0v2+(fv1v2-fv0v2)*scale | scale
|
|
fistpl fv_v+4-12(%edx) // scale | fv0v2+(fv1v2-fv0v2)*scale
|
|
fxch %st(1) // fv0v2+(fv1v2-fv0v2)*sc | scale
|
|
fistpl fv_v+8-12(%edx) // scale
|
|
|
|
decl %eax
|
|
jnz LDo3Forward
|
|
|
|
fstp %st(0)
|
|
|
|
popl %edi
|
|
popl %esi
|
|
|
|
ret
|
|
|
|
|
|
.globl C(R_Alias_clip_top)
|
|
C(R_Alias_clip_top):
|
|
pushl %esi
|
|
pushl %edi
|
|
|
|
movl pfv0(%esp),%esi
|
|
movl pfv1(%esp),%edi
|
|
|
|
movl C(r_refdef)+rd_aliasvrect+4,%eax
|
|
jmp LDoForwardOrBackward
|
|
|
|
|
|
|
|
.globl C(R_Alias_clip_right)
|
|
C(R_Alias_clip_right):
|
|
pushl %esi
|
|
pushl %edi
|
|
|
|
movl pfv0(%esp),%esi
|
|
movl pfv1(%esp),%edi
|
|
|
|
movl C(r_refdef)+rd_aliasvrectright,%eax
|
|
|
|
LRightLeftEntry:
|
|
|
|
|
|
movl fv_v+4(%esi),%edx
|
|
movl fv_v+4(%edi),%ecx
|
|
|
|
cmpl %ecx,%edx
|
|
movl fv_v+0(%esi),%edx
|
|
|
|
movl fv_v+0(%edi),%ecx
|
|
jl LDoForward2
|
|
|
|
movl fv_v+0(%esi),%ecx
|
|
movl fv_v+0(%edi),%edx
|
|
movl pfv0(%esp),%edi
|
|
movl pfv1(%esp),%esi
|
|
|
|
LDoForward2:
|
|
|
|
jmp LDoForward
|
|
|
|
|
|
.globl C(R_Alias_clip_left)
|
|
C(R_Alias_clip_left):
|
|
pushl %esi
|
|
pushl %edi
|
|
|
|
movl pfv0(%esp),%esi
|
|
movl pfv1(%esp),%edi
|
|
|
|
movl C(r_refdef)+rd_aliasvrect+0,%eax
|
|
jmp LRightLeftEntry
|
|
|
|
|
|
#endif // id386
|
|
|