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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 5131 | clevermous | 1 | /* |
| 2 | Copyright (C) 1996-1997 Id Software, Inc. |
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| 3 | |||
| 4 | This program is free software; you can redistribute it and/or |
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| 5 | modify it under the terms of the GNU General Public License |
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| 6 | as published by the Free Software Foundation; either version 2 |
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| 7 | of the License, or (at your option) any later version. |
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| 8 | |||
| 9 | This program is distributed in the hope that it will be useful, |
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
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| 12 | |||
| 13 | See the GNU General Public License for more details. |
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| 14 | |||
| 15 | You should have received a copy of the GNU General Public License |
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| 16 | along with this program; if not, write to the Free Software |
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| 17 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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| 18 | |||
| 19 | */ |
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| 20 | // |
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| 21 | // r_aliasa.s |
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| 22 | // x86 assembly-language Alias model transform and project code. |
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| 23 | // |
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| 24 | |||
| 25 | #include "asm_i386.h" |
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| 26 | #include "quakeasm.h" |
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| 27 | #include "asm_draw.h" |
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| 28 | #include "d_ifacea.h" |
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| 29 | |||
| 30 | #if id386 |
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| 31 | |||
| 32 | .data |
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| 33 | Ltemp0: .long 0 |
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| 34 | Ltemp1: .long 0 |
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| 35 | |||
| 36 | .text |
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| 37 | |||
| 38 | #define pfv0 8+4 |
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| 39 | #define pfv1 8+8 |
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| 40 | #define out 8+12 |
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| 41 | |||
| 42 | .globl C(R_Alias_clip_bottom) |
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| 43 | C(R_Alias_clip_bottom): |
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| 44 | pushl %esi |
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| 45 | pushl %edi |
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| 46 | |||
| 47 | movl pfv0(%esp),%esi |
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| 48 | movl pfv1(%esp),%edi |
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| 49 | |||
| 50 | movl C(r_refdef)+rd_aliasvrectbottom,%eax |
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| 51 | |||
| 52 | LDoForwardOrBackward: |
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| 53 | |||
| 54 | movl fv_v+4(%esi),%edx |
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| 55 | movl fv_v+4(%edi),%ecx |
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| 56 | |||
| 57 | cmpl %ecx,%edx |
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| 58 | jl LDoForward |
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| 59 | |||
| 60 | movl fv_v+4(%esi),%ecx |
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| 61 | movl fv_v+4(%edi),%edx |
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| 62 | movl pfv0(%esp),%edi |
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| 63 | movl pfv1(%esp),%esi |
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| 64 | |||
| 65 | LDoForward: |
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| 66 | |||
| 67 | subl %edx,%ecx |
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| 68 | subl %edx,%eax |
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| 69 | movl %ecx,Ltemp1 |
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| 70 | movl %eax,Ltemp0 |
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| 71 | fildl Ltemp1 |
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| 72 | fildl Ltemp0 |
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| 73 | movl out(%esp),%edx |
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| 74 | movl $2,%eax |
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| 75 | |||
| 76 | fdivp %st(0),%st(1) // scale |
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| 77 | |||
| 78 | LDo3Forward: |
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| 79 | fildl fv_v+0(%esi) // fv0v0 | scale |
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| 80 | fildl fv_v+0(%edi) // fv1v0 | fv0v0 | scale |
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| 81 | fildl fv_v+4(%esi) // fv0v1 | fv1v0 | fv0v0 | scale |
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| 82 | fildl fv_v+4(%edi) // fv1v1 | fv0v1 | fv1v0 | fv0v0 | scale |
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| 83 | fildl fv_v+8(%esi) // fv0v2 | fv1v1 | fv0v1 | fv1v0 | fv0v0 | scale |
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| 84 | fildl fv_v+8(%edi) // fv1v2 | fv0v2 | fv1v1 | fv0v1 | fv1v0 | fv0v0 | |
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| 85 | // scale |
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| 86 | fxch %st(5) // fv0v0 | fv0v2 | fv1v1 | fv0v1 | fv1v0 | fv1v2 | |
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| 87 | // scale |
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| 88 | fsubr %st(0),%st(4) // fv0v0 | fv0v2 | fv1v1 | fv0v1 | fv1v0-fv0v0 | |
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| 89 | // fv1v2 | scale |
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| 90 | fxch %st(3) // fv0v1 | fv0v2 | fv1v1 | fv0v0 | fv1v0-fv0v0 | |
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| 91 | // fv1v2 | scale |
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| 92 | fsubr %st(0),%st(2) // fv0v1 | fv0v2 | fv1v1-fv0v1 | fv0v0 | |
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| 93 | // fv1v0-fv0v0 | fv1v2 | scale |
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| 94 | fxch %st(1) // fv0v2 | fv0v1 | fv1v1-fv0v1 | fv0v0 | |
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| 95 | // fv1v0-fv0v0 | fv1v2 | scale |
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| 96 | fsubr %st(0),%st(5) // fv0v2 | fv0v1 | fv1v1-fv0v1 | fv0v0 | |
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| 97 | // fv1v0-fv0v0 | fv1v2-fv0v2 | scale |
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| 98 | fxch %st(6) // scale | fv0v1 | fv1v1-fv0v1 | fv0v0 | |
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| 99 | // fv1v0-fv0v0 | fv1v2-fv0v2 | fv0v2 |
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| 100 | fmul %st(0),%st(4) // scale | fv0v1 | fv1v1-fv0v1 | fv0v0 | |
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| 101 | // (fv1v0-fv0v0)*scale | fv1v2-fv0v2 | fv0v2 |
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| 102 | addl $12,%edi |
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| 103 | fmul %st(0),%st(2) // scale | fv0v1 | (fv1v1-fv0v1)*scale | fv0v0 | |
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| 104 | // (fv1v0-fv0v0)*scale | fv1v2-fv0v2 | fv0v2 |
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| 105 | addl $12,%esi |
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| 106 | addl $12,%edx |
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| 107 | fmul %st(0),%st(5) // scale | fv0v1 | (fv1v1-fv0v1)*scale | fv0v0 | |
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| 108 | // (fv1v0-fv0v0)*scale | (fv1v2-fv0v2)*scale | |
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| 109 | // fv0v2 |
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| 110 | fxch %st(3) // fv0v0 | fv0v1 | (fv1v1-fv0v1)*scale | scale | |
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| 111 | // (fv1v0-fv0v0)*scale | (fv1v2-fv0v2)*scale | |
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| 112 | // fv0v2 |
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| 113 | faddp %st(0),%st(4) // fv0v1 | (fv1v1-fv0v1)*scale | scale | |
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| 114 | // fv0v0+(fv1v0-fv0v0)*scale | |
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| 115 | // (fv1v2-fv0v2)*scale | fv0v2 |
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| 116 | faddp %st(0),%st(1) // fv0v1+(fv1v1-fv0v1)*scale | scale | |
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| 117 | // fv0v0+(fv1v0-fv0v0)*scale | |
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| 118 | // (fv1v2-fv0v2)*scale | fv0v2 |
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| 119 | fxch %st(4) // fv0v2 | scale | fv0v0+(fv1v0-fv0v0)*scale | |
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| 120 | // (fv1v2-fv0v2)*scale | fv0v1+(fv1v1-fv0v1)*scale |
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| 121 | faddp %st(0),%st(3) // scale | fv0v0+(fv1v0-fv0v0)*scale | |
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| 122 | // fv0v2+(fv1v2-fv0v2)*scale | |
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| 123 | // fv0v1+(fv1v1-fv0v1)*scale |
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| 124 | fxch %st(1) // fv0v0+(fv1v0-fv0v0)*scale | scale | |
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| 125 | // fv0v2+(fv1v2-fv0v2)*scale | |
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| 126 | // fv0v1+(fv1v1-fv0v1)*scale |
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| 127 | fadds float_point5 |
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| 128 | fxch %st(3) // fv0v1+(fv1v1-fv0v1)*scale | scale | |
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| 129 | // fv0v2+(fv1v2-fv0v2)*scale | |
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| 130 | // fv0v0+(fv1v0-fv0v0)*scale |
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| 131 | fadds float_point5 |
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| 132 | fxch %st(2) // fv0v2+(fv1v2-fv0v2)*scale | scale | |
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| 133 | // fv0v1+(fv1v1-fv0v1)*scale | |
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| 134 | // fv0v0+(fv1v0-fv0v0)*scale |
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| 135 | fadds float_point5 |
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| 136 | fxch %st(3) // fv0v0+(fv1v0-fv0v0)*scale | scale | |
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| 137 | // fv0v1+(fv1v1-fv0v1)*scale | |
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| 138 | // fv0v2+(fv1v2-fv0v2)*scale |
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| 139 | fistpl fv_v+0-12(%edx) // scale | fv0v1+(fv1v1-fv0v1)*scale | |
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| 140 | // fv0v2+(fv1v2-fv0v2)*scale |
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| 141 | fxch %st(1) // fv0v1+(fv1v1-fv0v1)*scale | scale | |
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| 142 | // fv0v2+(fv1v2-fv0v2)*scale | scale |
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| 143 | fistpl fv_v+4-12(%edx) // scale | fv0v2+(fv1v2-fv0v2)*scale |
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| 144 | fxch %st(1) // fv0v2+(fv1v2-fv0v2)*sc | scale |
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| 145 | fistpl fv_v+8-12(%edx) // scale |
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| 146 | |||
| 147 | decl %eax |
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| 148 | jnz LDo3Forward |
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| 149 | |||
| 150 | fstp %st(0) |
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| 151 | |||
| 152 | popl %edi |
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| 153 | popl %esi |
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| 154 | |||
| 155 | ret |
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| 156 | |||
| 157 | |||
| 158 | .globl C(R_Alias_clip_top) |
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| 159 | C(R_Alias_clip_top): |
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| 160 | pushl %esi |
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| 161 | pushl %edi |
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| 162 | |||
| 163 | movl pfv0(%esp),%esi |
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| 164 | movl pfv1(%esp),%edi |
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| 165 | |||
| 166 | movl C(r_refdef)+rd_aliasvrect+4,%eax |
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| 167 | jmp LDoForwardOrBackward |
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| 168 | |||
| 169 | |||
| 170 | |||
| 171 | .globl C(R_Alias_clip_right) |
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| 172 | C(R_Alias_clip_right): |
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| 173 | pushl %esi |
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| 174 | pushl %edi |
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| 175 | |||
| 176 | movl pfv0(%esp),%esi |
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| 177 | movl pfv1(%esp),%edi |
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| 178 | |||
| 179 | movl C(r_refdef)+rd_aliasvrectright,%eax |
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| 180 | |||
| 181 | LRightLeftEntry: |
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| 182 | |||
| 183 | |||
| 184 | movl fv_v+4(%esi),%edx |
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| 185 | movl fv_v+4(%edi),%ecx |
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| 186 | |||
| 187 | cmpl %ecx,%edx |
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| 188 | movl fv_v+0(%esi),%edx |
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| 189 | |||
| 190 | movl fv_v+0(%edi),%ecx |
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| 191 | jl LDoForward2 |
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| 192 | |||
| 193 | movl fv_v+0(%esi),%ecx |
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| 194 | movl fv_v+0(%edi),%edx |
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| 195 | movl pfv0(%esp),%edi |
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| 196 | movl pfv1(%esp),%esi |
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| 197 | |||
| 198 | LDoForward2: |
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| 199 | |||
| 200 | jmp LDoForward |
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| 201 | |||
| 202 | |||
| 203 | .globl C(R_Alias_clip_left) |
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| 204 | C(R_Alias_clip_left): |
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| 205 | pushl %esi |
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| 206 | pushl %edi |
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| 207 | |||
| 208 | movl pfv0(%esp),%esi |
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| 209 | movl pfv1(%esp),%edi |
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| 210 | |||
| 211 | movl C(r_refdef)+rd_aliasvrect+0,%eax |
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| 212 | jmp LRightLeftEntry |
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| 213 | |||
| 214 | |||
| 215 | #endif // id386 |
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| 216 |