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| /* |
| 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 |
| |