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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 | // d_varsa.s |
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| 22 | // |
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| 23 | |||
| 24 | #include "asm_i386.h" |
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| 25 | #include "quakeasm.h" |
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| 26 | #include "asm_draw.h" |
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| 27 | #include "d_ifacea.h" |
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| 28 | |||
| 29 | #if id386 |
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| 30 | |||
| 31 | .data |
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| 32 | |||
| 33 | //------------------------------------------------------- |
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| 34 | // global refresh variables |
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| 35 | //------------------------------------------------------- |
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| 36 | |||
| 37 | // FIXME: put all refresh variables into one contiguous block. Make into one |
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| 38 | // big structure, like cl or sv? |
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| 39 | |||
| 40 | .align 4 |
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| 41 | .globl C(d_sdivzstepu) |
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| 42 | .globl C(d_tdivzstepu) |
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| 43 | .globl C(d_zistepu) |
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| 44 | .globl C(d_sdivzstepv) |
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| 45 | .globl C(d_tdivzstepv) |
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| 46 | .globl C(d_zistepv) |
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| 47 | .globl C(d_sdivzorigin) |
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| 48 | .globl C(d_tdivzorigin) |
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| 49 | .globl C(d_ziorigin) |
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| 50 | C(d_sdivzstepu): .single 0 |
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| 51 | C(d_tdivzstepu): .single 0 |
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| 52 | C(d_zistepu): .single 0 |
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| 53 | C(d_sdivzstepv): .single 0 |
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| 54 | C(d_tdivzstepv): .single 0 |
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| 55 | C(d_zistepv): .single 0 |
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| 56 | C(d_sdivzorigin): .single 0 |
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| 57 | C(d_tdivzorigin): .single 0 |
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| 58 | C(d_ziorigin): .single 0 |
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| 59 | |||
| 60 | .globl C(sadjust) |
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| 61 | .globl C(tadjust) |
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| 62 | .globl C(bbextents) |
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| 63 | .globl C(bbextentt) |
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| 64 | C(sadjust): .long 0 |
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| 65 | C(tadjust): .long 0 |
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| 66 | C(bbextents): .long 0 |
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| 67 | C(bbextentt): .long 0 |
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| 68 | |||
| 69 | .globl C(cacheblock) |
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| 70 | .globl C(d_viewbuffer) |
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| 71 | .globl C(cachewidth) |
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| 72 | .globl C(d_pzbuffer) |
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| 73 | .globl C(d_zrowbytes) |
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| 74 | .globl C(d_zwidth) |
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| 75 | C(cacheblock): .long 0 |
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| 76 | C(cachewidth): .long 0 |
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| 77 | C(d_viewbuffer): .long 0 |
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| 78 | C(d_pzbuffer): .long 0 |
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| 79 | C(d_zrowbytes): .long 0 |
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| 80 | C(d_zwidth): .long 0 |
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| 81 | |||
| 82 | |||
| 83 | //------------------------------------------------------- |
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| 84 | // ASM-only variables |
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| 85 | //------------------------------------------------------- |
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| 86 | .globl izi |
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| 87 | izi: .long 0 |
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| 88 | |||
| 89 | .globl pbase, s, t, sfracf, tfracf, snext, tnext |
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| 90 | .globl spancountminus1, zi16stepu, sdivz16stepu, tdivz16stepu |
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| 91 | .globl zi8stepu, sdivz8stepu, tdivz8stepu, pz |
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| 92 | s: .long 0 |
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| 93 | t: .long 0 |
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| 94 | snext: .long 0 |
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| 95 | tnext: .long 0 |
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| 96 | sfracf: .long 0 |
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| 97 | tfracf: .long 0 |
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| 98 | pbase: .long 0 |
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| 99 | zi8stepu: .long 0 |
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| 100 | sdivz8stepu: .long 0 |
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| 101 | tdivz8stepu: .long 0 |
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| 102 | zi16stepu: .long 0 |
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| 103 | sdivz16stepu: .long 0 |
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| 104 | tdivz16stepu: .long 0 |
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| 105 | spancountminus1: .long 0 |
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| 106 | pz: .long 0 |
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| 107 | |||
| 108 | .globl izistep |
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| 109 | izistep: .long 0 |
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| 110 | |||
| 111 | //------------------------------------------------------- |
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| 112 | // local variables for d_draw16.s |
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| 113 | //------------------------------------------------------- |
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| 114 | |||
| 115 | .globl reciprocal_table_16, entryvec_table_16 |
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| 116 | // 1/2, 1/3, 1/4, 1/5, 1/6, 1/7, 1/8, 1/9, 1/10, 1/11, 1/12, 1/13, |
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| 117 | // 1/14, and 1/15 in 0.32 form |
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| 118 | reciprocal_table_16: .long 0x40000000, 0x2aaaaaaa, 0x20000000 |
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| 119 | .long 0x19999999, 0x15555555, 0x12492492 |
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| 120 | .long 0x10000000, 0xe38e38e, 0xccccccc, 0xba2e8ba |
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| 121 | .long 0xaaaaaaa, 0x9d89d89, 0x9249249, 0x8888888 |
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| 122 | |||
| 123 | #ifndef NeXT |
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| 124 | .extern Entry2_16 |
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| 125 | .extern Entry3_16 |
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| 126 | .extern Entry4_16 |
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| 127 | .extern Entry5_16 |
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| 128 | .extern Entry6_16 |
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| 129 | .extern Entry7_16 |
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| 130 | .extern Entry8_16 |
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| 131 | .extern Entry9_16 |
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| 132 | .extern Entry10_16 |
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| 133 | .extern Entry11_16 |
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| 134 | .extern Entry12_16 |
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| 135 | .extern Entry13_16 |
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| 136 | .extern Entry14_16 |
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| 137 | .extern Entry15_16 |
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| 138 | .extern Entry16_16 |
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| 139 | #endif |
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| 140 | |||
| 141 | entryvec_table_16: .long 0, Entry2_16, Entry3_16, Entry4_16 |
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| 142 | .long Entry5_16, Entry6_16, Entry7_16, Entry8_16 |
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| 143 | .long Entry9_16, Entry10_16, Entry11_16, Entry12_16 |
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| 144 | .long Entry13_16, Entry14_16, Entry15_16, Entry16_16 |
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| 145 | |||
| 146 | //------------------------------------------------------- |
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| 147 | // local variables for d_parta.s |
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| 148 | //------------------------------------------------------- |
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| 149 | .globl DP_Count, DP_u, DP_v, DP_32768, DP_Color, DP_Pix, DP_EntryTable |
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| 150 | DP_Count: .long 0 |
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| 151 | DP_u: .long 0 |
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| 152 | DP_v: .long 0 |
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| 153 | DP_32768: .single 32768.0 |
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| 154 | DP_Color: .long 0 |
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| 155 | DP_Pix: .long 0 |
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| 156 | |||
| 157 | |||
| 158 | #ifndef NeXT |
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| 159 | .extern DP_1x1 |
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| 160 | .extern DP_2x2 |
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| 161 | .extern DP_3x3 |
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| 162 | .extern DP_4x4 |
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| 163 | #endif |
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| 164 | |||
| 165 | DP_EntryTable: .long DP_1x1, DP_2x2, DP_3x3, DP_4x4 |
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| 166 | |||
| 167 | // |
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| 168 | // advancetable is 8 bytes, but points to the middle of that range so negative |
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| 169 | // offsets will work |
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| 170 | // |
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| 171 | .globl advancetable, sstep, tstep, pspantemp, counttemp, jumptemp |
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| 172 | advancetable: .long 0, 0 |
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| 173 | sstep: .long 0 |
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| 174 | tstep: .long 0 |
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| 175 | |||
| 176 | pspantemp: .long 0 |
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| 177 | counttemp: .long 0 |
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| 178 | jumptemp: .long 0 |
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| 179 | |||
| 180 | // 1/2, 1/3, 1/4, 1/5, 1/6, and 1/7 in 0.32 form |
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| 181 | .globl reciprocal_table, entryvec_table |
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| 182 | reciprocal_table: .long 0x40000000, 0x2aaaaaaa, 0x20000000 |
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| 183 | .long 0x19999999, 0x15555555, 0x12492492 |
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| 184 | |||
| 185 | #ifndef NeXT |
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| 186 | .extern Entry2_8 |
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| 187 | .extern Entry3_8 |
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| 188 | .extern Entry4_8 |
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| 189 | .extern Entry5_8 |
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| 190 | .extern Entry6_8 |
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| 191 | .extern Entry7_8 |
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| 192 | .extern Entry8_8 |
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| 193 | #endif |
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| 194 | |||
| 195 | entryvec_table: .long 0, Entry2_8, Entry3_8, Entry4_8 |
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| 196 | .long Entry5_8, Entry6_8, Entry7_8, Entry8_8 |
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| 197 | |||
| 198 | #ifndef NeXT |
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| 199 | .extern Spr8Entry2_8 |
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| 200 | .extern Spr8Entry3_8 |
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| 201 | .extern Spr8Entry4_8 |
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| 202 | .extern Spr8Entry5_8 |
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| 203 | .extern Spr8Entry6_8 |
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| 204 | .extern Spr8Entry7_8 |
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| 205 | .extern Spr8Entry8_8 |
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| 206 | #endif |
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| 207 | |||
| 208 | .globl spr8entryvec_table |
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| 209 | spr8entryvec_table: .long 0, Spr8Entry2_8, Spr8Entry3_8, Spr8Entry4_8 |
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| 210 | .long Spr8Entry5_8, Spr8Entry6_8, Spr8Entry7_8, Spr8Entry8_8 |
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| 211 | |||
| 212 | #endif // id386 |
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| 213 |