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Rev | Author | Line No. | Line |
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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 | // surf8.s |
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22 | // x86 assembly-language 8 bpp surface block drawing 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 | |||
29 | #if id386 |
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30 | |||
31 | .data |
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32 | |||
33 | sb_v: .long 0 |
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34 | |||
35 | .text |
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36 | |||
37 | .align 4 |
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38 | .globl C(R_Surf8Start) |
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39 | C(R_Surf8Start): |
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40 | |||
41 | //---------------------------------------------------------------------- |
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42 | // Surface block drawer for mip level 0 |
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43 | //---------------------------------------------------------------------- |
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44 | |||
45 | .align 4 |
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46 | .globl C(R_DrawSurfaceBlock8_mip0) |
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47 | C(R_DrawSurfaceBlock8_mip0): |
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48 | pushl %ebp // preserve caller's stack frame |
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49 | pushl %edi |
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50 | pushl %esi // preserve register variables |
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51 | pushl %ebx |
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52 | |||
53 | // for (v=0 ; v |
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54 | // { |
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55 | movl C(r_lightptr),%ebx |
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56 | movl C(r_numvblocks),%eax |
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57 | |||
58 | movl %eax,sb_v |
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59 | movl C(prowdestbase),%edi |
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60 | |||
61 | movl C(pbasesource),%esi |
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62 | |||
63 | Lv_loop_mip0: |
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64 | |||
65 | // lightleft = lightptr[0]; |
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66 | // lightright = lightptr[1]; |
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67 | // lightdelta = (lightleft - lightright) & 0xFFFFF; |
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68 | movl (%ebx),%eax // lightleft |
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69 | movl 4(%ebx),%edx // lightright |
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70 | |||
71 | movl %eax,%ebp |
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72 | movl C(r_lightwidth),%ecx |
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73 | |||
74 | movl %edx,C(lightright) |
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75 | subl %edx,%ebp |
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76 | |||
77 | andl $0xFFFFF,%ebp |
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78 | leal (%ebx,%ecx,4),%ebx |
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79 | |||
80 | // lightptr += lightwidth; |
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81 | movl %ebx,C(r_lightptr) |
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82 | |||
83 | // lightleftstep = (lightptr[0] - lightleft) >> blockdivshift; |
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84 | // lightrightstep = (lightptr[1] - lightright) >> blockdivshift; |
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85 | // lightdeltastep = ((lightleftstep - lightrightstep) & 0xFFFFF) | |
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86 | // 0xF0000000; |
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87 | movl 4(%ebx),%ecx // lightptr[1] |
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88 | movl (%ebx),%ebx // lightptr[0] |
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89 | |||
90 | subl %eax,%ebx |
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91 | subl %edx,%ecx |
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92 | |||
93 | sarl $4,%ecx |
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94 | orl $0xF0000000,%ebp |
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95 | |||
96 | sarl $4,%ebx |
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97 | movl %ecx,C(lightrightstep) |
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98 | |||
99 | subl %ecx,%ebx |
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100 | andl $0xFFFFF,%ebx |
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101 | |||
102 | orl $0xF0000000,%ebx |
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103 | subl %ecx,%ecx // high word must be 0 in loop for addressing |
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104 | |||
105 | movl %ebx,C(lightdeltastep) |
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106 | subl %ebx,%ebx // high word must be 0 in loop for addressing |
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107 | |||
108 | Lblockloop8_mip0: |
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109 | movl %ebp,C(lightdelta) |
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110 | movb 14(%esi),%cl |
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111 | |||
112 | sarl $4,%ebp |
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113 | movb %dh,%bh |
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114 | |||
115 | movb 15(%esi),%bl |
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116 | addl %ebp,%edx |
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117 | |||
118 | movb %dh,%ch |
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119 | addl %ebp,%edx |
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120 | |||
121 | movb 0x12345678(%ebx),%ah |
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122 | LBPatch0: |
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123 | movb 13(%esi),%bl |
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124 | |||
125 | movb 0x12345678(%ecx),%al |
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126 | LBPatch1: |
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127 | movb 12(%esi),%cl |
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128 | |||
129 | movb %dh,%bh |
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130 | addl %ebp,%edx |
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131 | |||
132 | rorl $16,%eax |
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133 | movb %dh,%ch |
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134 | |||
135 | addl %ebp,%edx |
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136 | movb 0x12345678(%ebx),%ah |
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137 | LBPatch2: |
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138 | |||
139 | movb 11(%esi),%bl |
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140 | movb 0x12345678(%ecx),%al |
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141 | LBPatch3: |
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142 | |||
143 | movb 10(%esi),%cl |
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144 | movl %eax,12(%edi) |
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145 | |||
146 | movb %dh,%bh |
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147 | addl %ebp,%edx |
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148 | |||
149 | movb %dh,%ch |
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150 | addl %ebp,%edx |
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151 | |||
152 | movb 0x12345678(%ebx),%ah |
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153 | LBPatch4: |
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154 | movb 9(%esi),%bl |
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155 | |||
156 | movb 0x12345678(%ecx),%al |
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157 | LBPatch5: |
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158 | movb 8(%esi),%cl |
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159 | |||
160 | movb %dh,%bh |
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161 | addl %ebp,%edx |
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162 | |||
163 | rorl $16,%eax |
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164 | movb %dh,%ch |
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165 | |||
166 | addl %ebp,%edx |
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167 | movb 0x12345678(%ebx),%ah |
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168 | LBPatch6: |
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169 | |||
170 | movb 7(%esi),%bl |
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171 | movb 0x12345678(%ecx),%al |
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172 | LBPatch7: |
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173 | |||
174 | movb 6(%esi),%cl |
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175 | movl %eax,8(%edi) |
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176 | |||
177 | movb %dh,%bh |
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178 | addl %ebp,%edx |
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179 | |||
180 | movb %dh,%ch |
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181 | addl %ebp,%edx |
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182 | |||
183 | movb 0x12345678(%ebx),%ah |
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184 | LBPatch8: |
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185 | movb 5(%esi),%bl |
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186 | |||
187 | movb 0x12345678(%ecx),%al |
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188 | LBPatch9: |
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189 | movb 4(%esi),%cl |
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190 | |||
191 | movb %dh,%bh |
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192 | addl %ebp,%edx |
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193 | |||
194 | rorl $16,%eax |
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195 | movb %dh,%ch |
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196 | |||
197 | addl %ebp,%edx |
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198 | movb 0x12345678(%ebx),%ah |
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199 | LBPatch10: |
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200 | |||
201 | movb 3(%esi),%bl |
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202 | movb 0x12345678(%ecx),%al |
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203 | LBPatch11: |
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204 | |||
205 | movb 2(%esi),%cl |
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206 | movl %eax,4(%edi) |
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207 | |||
208 | movb %dh,%bh |
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209 | addl %ebp,%edx |
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210 | |||
211 | movb %dh,%ch |
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212 | addl %ebp,%edx |
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213 | |||
214 | movb 0x12345678(%ebx),%ah |
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215 | LBPatch12: |
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216 | movb 1(%esi),%bl |
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217 | |||
218 | movb 0x12345678(%ecx),%al |
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219 | LBPatch13: |
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220 | movb (%esi),%cl |
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221 | |||
222 | movb %dh,%bh |
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223 | addl %ebp,%edx |
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224 | |||
225 | rorl $16,%eax |
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226 | movb %dh,%ch |
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227 | |||
228 | movb 0x12345678(%ebx),%ah |
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229 | LBPatch14: |
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230 | movl C(lightright),%edx |
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231 | |||
232 | movb 0x12345678(%ecx),%al |
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233 | LBPatch15: |
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234 | movl C(lightdelta),%ebp |
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235 | |||
236 | movl %eax,(%edi) |
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237 | |||
238 | addl C(sourcetstep),%esi |
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239 | addl C(surfrowbytes),%edi |
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240 | |||
241 | addl C(lightrightstep),%edx |
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242 | addl C(lightdeltastep),%ebp |
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243 | |||
244 | movl %edx,C(lightright) |
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245 | jc Lblockloop8_mip0 |
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246 | |||
247 | // if (pbasesource >= r_sourcemax) |
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248 | // pbasesource -= stepback; |
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249 | |||
250 | cmpl C(r_sourcemax),%esi |
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251 | jb LSkip_mip0 |
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252 | subl C(r_stepback),%esi |
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253 | LSkip_mip0: |
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254 | |||
255 | movl C(r_lightptr),%ebx |
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256 | decl sb_v |
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257 | |||
258 | jnz Lv_loop_mip0 |
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259 | |||
260 | popl %ebx // restore register variables |
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261 | popl %esi |
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262 | popl %edi |
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263 | popl %ebp // restore the caller's stack frame |
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264 | ret |
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265 | |||
266 | |||
267 | //---------------------------------------------------------------------- |
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268 | // Surface block drawer for mip level 1 |
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269 | //---------------------------------------------------------------------- |
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270 | |||
271 | .align 4 |
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272 | .globl C(R_DrawSurfaceBlock8_mip1) |
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273 | C(R_DrawSurfaceBlock8_mip1): |
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274 | pushl %ebp // preserve caller's stack frame |
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275 | pushl %edi |
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276 | pushl %esi // preserve register variables |
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277 | pushl %ebx |
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278 | |||
279 | // for (v=0 ; v |
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280 | // { |
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281 | movl C(r_lightptr),%ebx |
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282 | movl C(r_numvblocks),%eax |
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283 | |||
284 | movl %eax,sb_v |
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285 | movl C(prowdestbase),%edi |
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286 | |||
287 | movl C(pbasesource),%esi |
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288 | |||
289 | Lv_loop_mip1: |
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290 | |||
291 | // lightleft = lightptr[0]; |
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292 | // lightright = lightptr[1]; |
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293 | // lightdelta = (lightleft - lightright) & 0xFFFFF; |
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294 | movl (%ebx),%eax // lightleft |
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295 | movl 4(%ebx),%edx // lightright |
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296 | |||
297 | movl %eax,%ebp |
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298 | movl C(r_lightwidth),%ecx |
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299 | |||
300 | movl %edx,C(lightright) |
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301 | subl %edx,%ebp |
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302 | |||
303 | andl $0xFFFFF,%ebp |
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304 | leal (%ebx,%ecx,4),%ebx |
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305 | |||
306 | // lightptr += lightwidth; |
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307 | movl %ebx,C(r_lightptr) |
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308 | |||
309 | // lightleftstep = (lightptr[0] - lightleft) >> blockdivshift; |
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310 | // lightrightstep = (lightptr[1] - lightright) >> blockdivshift; |
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311 | // lightdeltastep = ((lightleftstep - lightrightstep) & 0xFFFFF) | |
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312 | // 0xF0000000; |
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313 | movl 4(%ebx),%ecx // lightptr[1] |
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314 | movl (%ebx),%ebx // lightptr[0] |
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315 | |||
316 | subl %eax,%ebx |
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317 | subl %edx,%ecx |
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318 | |||
319 | sarl $3,%ecx |
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320 | orl $0x70000000,%ebp |
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321 | |||
322 | sarl $3,%ebx |
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323 | movl %ecx,C(lightrightstep) |
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324 | |||
325 | subl %ecx,%ebx |
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326 | andl $0xFFFFF,%ebx |
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327 | |||
328 | orl $0xF0000000,%ebx |
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329 | subl %ecx,%ecx // high word must be 0 in loop for addressing |
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330 | |||
331 | movl %ebx,C(lightdeltastep) |
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332 | subl %ebx,%ebx // high word must be 0 in loop for addressing |
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333 | |||
334 | Lblockloop8_mip1: |
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335 | movl %ebp,C(lightdelta) |
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336 | movb 6(%esi),%cl |
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337 | |||
338 | sarl $3,%ebp |
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339 | movb %dh,%bh |
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340 | |||
341 | movb 7(%esi),%bl |
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342 | addl %ebp,%edx |
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343 | |||
344 | movb %dh,%ch |
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345 | addl %ebp,%edx |
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346 | |||
347 | movb 0x12345678(%ebx),%ah |
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348 | LBPatch22: |
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349 | movb 5(%esi),%bl |
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350 | |||
351 | movb 0x12345678(%ecx),%al |
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352 | LBPatch23: |
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353 | movb 4(%esi),%cl |
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354 | |||
355 | movb %dh,%bh |
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356 | addl %ebp,%edx |
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357 | |||
358 | rorl $16,%eax |
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359 | movb %dh,%ch |
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360 | |||
361 | addl %ebp,%edx |
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362 | movb 0x12345678(%ebx),%ah |
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363 | LBPatch24: |
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364 | |||
365 | movb 3(%esi),%bl |
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366 | movb 0x12345678(%ecx),%al |
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367 | LBPatch25: |
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368 | |||
369 | movb 2(%esi),%cl |
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370 | movl %eax,4(%edi) |
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371 | |||
372 | movb %dh,%bh |
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373 | addl %ebp,%edx |
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374 | |||
375 | movb %dh,%ch |
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376 | addl %ebp,%edx |
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377 | |||
378 | movb 0x12345678(%ebx),%ah |
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379 | LBPatch26: |
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380 | movb 1(%esi),%bl |
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381 | |||
382 | movb 0x12345678(%ecx),%al |
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383 | LBPatch27: |
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384 | movb (%esi),%cl |
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385 | |||
386 | movb %dh,%bh |
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387 | addl %ebp,%edx |
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388 | |||
389 | rorl $16,%eax |
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390 | movb %dh,%ch |
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391 | |||
392 | movb 0x12345678(%ebx),%ah |
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393 | LBPatch28: |
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394 | movl C(lightright),%edx |
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395 | |||
396 | movb 0x12345678(%ecx),%al |
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397 | LBPatch29: |
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398 | movl C(lightdelta),%ebp |
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399 | |||
400 | movl %eax,(%edi) |
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401 | movl C(sourcetstep),%eax |
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402 | |||
403 | addl %eax,%esi |
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404 | movl C(surfrowbytes),%eax |
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405 | |||
406 | addl %eax,%edi |
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407 | movl C(lightrightstep),%eax |
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408 | |||
409 | addl %eax,%edx |
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410 | movl C(lightdeltastep),%eax |
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411 | |||
412 | addl %eax,%ebp |
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413 | movl %edx,C(lightright) |
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414 | |||
415 | jc Lblockloop8_mip1 |
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416 | |||
417 | // if (pbasesource >= r_sourcemax) |
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418 | // pbasesource -= stepback; |
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419 | |||
420 | cmpl C(r_sourcemax),%esi |
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421 | jb LSkip_mip1 |
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422 | subl C(r_stepback),%esi |
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423 | LSkip_mip1: |
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424 | |||
425 | movl C(r_lightptr),%ebx |
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426 | decl sb_v |
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427 | |||
428 | jnz Lv_loop_mip1 |
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429 | |||
430 | popl %ebx // restore register variables |
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431 | popl %esi |
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432 | popl %edi |
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433 | popl %ebp // restore the caller's stack frame |
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434 | ret |
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435 | |||
436 | |||
437 | //---------------------------------------------------------------------- |
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438 | // Surface block drawer for mip level 2 |
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439 | //---------------------------------------------------------------------- |
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440 | |||
441 | .align 4 |
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442 | .globl C(R_DrawSurfaceBlock8_mip2) |
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443 | C(R_DrawSurfaceBlock8_mip2): |
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444 | pushl %ebp // preserve caller's stack frame |
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445 | pushl %edi |
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446 | pushl %esi // preserve register variables |
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447 | pushl %ebx |
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448 | |||
449 | // for (v=0 ; v |
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450 | // { |
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451 | movl C(r_lightptr),%ebx |
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452 | movl C(r_numvblocks),%eax |
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453 | |||
454 | movl %eax,sb_v |
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455 | movl C(prowdestbase),%edi |
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456 | |||
457 | movl C(pbasesource),%esi |
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458 | |||
459 | Lv_loop_mip2: |
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460 | |||
461 | // lightleft = lightptr[0]; |
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462 | // lightright = lightptr[1]; |
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463 | // lightdelta = (lightleft - lightright) & 0xFFFFF; |
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464 | movl (%ebx),%eax // lightleft |
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465 | movl 4(%ebx),%edx // lightright |
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466 | |||
467 | movl %eax,%ebp |
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468 | movl C(r_lightwidth),%ecx |
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469 | |||
470 | movl %edx,C(lightright) |
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471 | subl %edx,%ebp |
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472 | |||
473 | andl $0xFFFFF,%ebp |
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474 | leal (%ebx,%ecx,4),%ebx |
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475 | |||
476 | // lightptr += lightwidth; |
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477 | movl %ebx,C(r_lightptr) |
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478 | |||
479 | // lightleftstep = (lightptr[0] - lightleft) >> blockdivshift; |
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480 | // lightrightstep = (lightptr[1] - lightright) >> blockdivshift; |
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481 | // lightdeltastep = ((lightleftstep - lightrightstep) & 0xFFFFF) | |
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482 | // 0xF0000000; |
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483 | movl 4(%ebx),%ecx // lightptr[1] |
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484 | movl (%ebx),%ebx // lightptr[0] |
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485 | |||
486 | subl %eax,%ebx |
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487 | subl %edx,%ecx |
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488 | |||
489 | sarl $2,%ecx |
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490 | orl $0x30000000,%ebp |
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491 | |||
492 | sarl $2,%ebx |
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493 | movl %ecx,C(lightrightstep) |
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494 | |||
495 | subl %ecx,%ebx |
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496 | |||
497 | andl $0xFFFFF,%ebx |
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498 | |||
499 | orl $0xF0000000,%ebx |
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500 | subl %ecx,%ecx // high word must be 0 in loop for addressing |
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501 | |||
502 | movl %ebx,C(lightdeltastep) |
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503 | subl %ebx,%ebx // high word must be 0 in loop for addressing |
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504 | |||
505 | Lblockloop8_mip2: |
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506 | movl %ebp,C(lightdelta) |
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507 | movb 2(%esi),%cl |
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508 | |||
509 | sarl $2,%ebp |
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510 | movb %dh,%bh |
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511 | |||
512 | movb 3(%esi),%bl |
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513 | addl %ebp,%edx |
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514 | |||
515 | movb %dh,%ch |
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516 | addl %ebp,%edx |
||
517 | |||
518 | movb 0x12345678(%ebx),%ah |
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519 | LBPatch18: |
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520 | movb 1(%esi),%bl |
||
521 | |||
522 | movb 0x12345678(%ecx),%al |
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523 | LBPatch19: |
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524 | movb (%esi),%cl |
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525 | |||
526 | movb %dh,%bh |
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527 | addl %ebp,%edx |
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528 | |||
529 | rorl $16,%eax |
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530 | movb %dh,%ch |
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531 | |||
532 | movb 0x12345678(%ebx),%ah |
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533 | LBPatch20: |
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534 | movl C(lightright),%edx |
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535 | |||
536 | movb 0x12345678(%ecx),%al |
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537 | LBPatch21: |
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538 | movl C(lightdelta),%ebp |
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539 | |||
540 | movl %eax,(%edi) |
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541 | movl C(sourcetstep),%eax |
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542 | |||
543 | addl %eax,%esi |
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544 | movl C(surfrowbytes),%eax |
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545 | |||
546 | addl %eax,%edi |
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547 | movl C(lightrightstep),%eax |
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548 | |||
549 | addl %eax,%edx |
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550 | movl C(lightdeltastep),%eax |
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551 | |||
552 | addl %eax,%ebp |
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553 | movl %edx,C(lightright) |
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554 | |||
555 | jc Lblockloop8_mip2 |
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556 | |||
557 | // if (pbasesource >= r_sourcemax) |
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558 | // pbasesource -= stepback; |
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559 | |||
560 | cmpl C(r_sourcemax),%esi |
||
561 | jb LSkip_mip2 |
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562 | subl C(r_stepback),%esi |
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563 | LSkip_mip2: |
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564 | |||
565 | movl C(r_lightptr),%ebx |
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566 | decl sb_v |
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567 | |||
568 | jnz Lv_loop_mip2 |
||
569 | |||
570 | popl %ebx // restore register variables |
||
571 | popl %esi |
||
572 | popl %edi |
||
573 | popl %ebp // restore the caller's stack frame |
||
574 | ret |
||
575 | |||
576 | |||
577 | //---------------------------------------------------------------------- |
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578 | // Surface block drawer for mip level 3 |
||
579 | //---------------------------------------------------------------------- |
||
580 | |||
581 | .align 4 |
||
582 | .globl C(R_DrawSurfaceBlock8_mip3) |
||
583 | C(R_DrawSurfaceBlock8_mip3): |
||
584 | pushl %ebp // preserve caller's stack frame |
||
585 | pushl %edi |
||
586 | pushl %esi // preserve register variables |
||
587 | pushl %ebx |
||
588 | |||
589 | // for (v=0 ; v |
||
590 | // { |
||
591 | movl C(r_lightptr),%ebx |
||
592 | movl C(r_numvblocks),%eax |
||
593 | |||
594 | movl %eax,sb_v |
||
595 | movl C(prowdestbase),%edi |
||
596 | |||
597 | movl C(pbasesource),%esi |
||
598 | |||
599 | Lv_loop_mip3: |
||
600 | |||
601 | // lightleft = lightptr[0]; |
||
602 | // lightright = lightptr[1]; |
||
603 | // lightdelta = (lightleft - lightright) & 0xFFFFF; |
||
604 | movl (%ebx),%eax // lightleft |
||
605 | movl 4(%ebx),%edx // lightright |
||
606 | |||
607 | movl %eax,%ebp |
||
608 | movl C(r_lightwidth),%ecx |
||
609 | |||
610 | movl %edx,C(lightright) |
||
611 | subl %edx,%ebp |
||
612 | |||
613 | andl $0xFFFFF,%ebp |
||
614 | leal (%ebx,%ecx,4),%ebx |
||
615 | |||
616 | movl %ebp,C(lightdelta) |
||
617 | // lightptr += lightwidth; |
||
618 | movl %ebx,C(r_lightptr) |
||
619 | |||
620 | // lightleftstep = (lightptr[0] - lightleft) >> blockdivshift; |
||
621 | // lightrightstep = (lightptr[1] - lightright) >> blockdivshift; |
||
622 | // lightdeltastep = ((lightleftstep - lightrightstep) & 0xFFFFF) | |
||
623 | // 0xF0000000; |
||
624 | movl 4(%ebx),%ecx // lightptr[1] |
||
625 | movl (%ebx),%ebx // lightptr[0] |
||
626 | |||
627 | subl %eax,%ebx |
||
628 | subl %edx,%ecx |
||
629 | |||
630 | sarl $1,%ecx |
||
631 | |||
632 | sarl $1,%ebx |
||
633 | movl %ecx,C(lightrightstep) |
||
634 | |||
635 | subl %ecx,%ebx |
||
636 | andl $0xFFFFF,%ebx |
||
637 | |||
638 | sarl $1,%ebp |
||
639 | orl $0xF0000000,%ebx |
||
640 | |||
641 | movl %ebx,C(lightdeltastep) |
||
642 | subl %ebx,%ebx // high word must be 0 in loop for addressing |
||
643 | |||
644 | movb 1(%esi),%bl |
||
645 | subl %ecx,%ecx // high word must be 0 in loop for addressing |
||
646 | |||
647 | movb %dh,%bh |
||
648 | movb (%esi),%cl |
||
649 | |||
650 | addl %ebp,%edx |
||
651 | movb %dh,%ch |
||
652 | |||
653 | movb 0x12345678(%ebx),%al |
||
654 | LBPatch16: |
||
655 | movl C(lightright),%edx |
||
656 | |||
657 | movb %al,1(%edi) |
||
658 | movb 0x12345678(%ecx),%al |
||
659 | LBPatch17: |
||
660 | |||
661 | movb %al,(%edi) |
||
662 | movl C(sourcetstep),%eax |
||
663 | |||
664 | addl %eax,%esi |
||
665 | movl C(surfrowbytes),%eax |
||
666 | |||
667 | addl %eax,%edi |
||
668 | movl C(lightdeltastep),%eax |
||
669 | |||
670 | movl C(lightdelta),%ebp |
||
671 | movb (%esi),%cl |
||
672 | |||
673 | addl %eax,%ebp |
||
674 | movl C(lightrightstep),%eax |
||
675 | |||
676 | sarl $1,%ebp |
||
677 | addl %eax,%edx |
||
678 | |||
679 | movb %dh,%bh |
||
680 | movb 1(%esi),%bl |
||
681 | |||
682 | addl %ebp,%edx |
||
683 | movb %dh,%ch |
||
684 | |||
685 | movb 0x12345678(%ebx),%al |
||
686 | LBPatch30: |
||
687 | movl C(sourcetstep),%edx |
||
688 | |||
689 | movb %al,1(%edi) |
||
690 | movb 0x12345678(%ecx),%al |
||
691 | LBPatch31: |
||
692 | |||
693 | movb %al,(%edi) |
||
694 | movl C(surfrowbytes),%ebp |
||
695 | |||
696 | addl %edx,%esi |
||
697 | addl %ebp,%edi |
||
698 | |||
699 | // if (pbasesource >= r_sourcemax) |
||
700 | // pbasesource -= stepback; |
||
701 | |||
702 | cmpl C(r_sourcemax),%esi |
||
703 | jb LSkip_mip3 |
||
704 | subl C(r_stepback),%esi |
||
705 | LSkip_mip3: |
||
706 | |||
707 | movl C(r_lightptr),%ebx |
||
708 | decl sb_v |
||
709 | |||
710 | jnz Lv_loop_mip3 |
||
711 | |||
712 | popl %ebx // restore register variables |
||
713 | popl %esi |
||
714 | popl %edi |
||
715 | popl %ebp // restore the caller's stack frame |
||
716 | ret |
||
717 | |||
718 | |||
719 | .globl C(R_Surf8End) |
||
720 | C(R_Surf8End): |
||
721 | |||
722 | //---------------------------------------------------------------------- |
||
723 | // Code patching routines |
||
724 | //---------------------------------------------------------------------- |
||
725 | .data |
||
726 | |||
727 | .align 4 |
||
728 | LPatchTable8: |
||
729 | .long LBPatch0-4 |
||
730 | .long LBPatch1-4 |
||
731 | .long LBPatch2-4 |
||
732 | .long LBPatch3-4 |
||
733 | .long LBPatch4-4 |
||
734 | .long LBPatch5-4 |
||
735 | .long LBPatch6-4 |
||
736 | .long LBPatch7-4 |
||
737 | .long LBPatch8-4 |
||
738 | .long LBPatch9-4 |
||
739 | .long LBPatch10-4 |
||
740 | .long LBPatch11-4 |
||
741 | .long LBPatch12-4 |
||
742 | .long LBPatch13-4 |
||
743 | .long LBPatch14-4 |
||
744 | .long LBPatch15-4 |
||
745 | .long LBPatch16-4 |
||
746 | .long LBPatch17-4 |
||
747 | .long LBPatch18-4 |
||
748 | .long LBPatch19-4 |
||
749 | .long LBPatch20-4 |
||
750 | .long LBPatch21-4 |
||
751 | .long LBPatch22-4 |
||
752 | .long LBPatch23-4 |
||
753 | .long LBPatch24-4 |
||
754 | .long LBPatch25-4 |
||
755 | .long LBPatch26-4 |
||
756 | .long LBPatch27-4 |
||
757 | .long LBPatch28-4 |
||
758 | .long LBPatch29-4 |
||
759 | .long LBPatch30-4 |
||
760 | .long LBPatch31-4 |
||
761 | |||
762 | .text |
||
763 | |||
764 | .align 4 |
||
765 | .globl C(R_Surf8Patch) |
||
766 | C(R_Surf8Patch): |
||
767 | pushl %ebx |
||
768 | |||
769 | movl C(colormap),%eax |
||
770 | movl $LPatchTable8,%ebx |
||
771 | movl $32,%ecx |
||
772 | LPatchLoop8: |
||
773 | movl (%ebx),%edx |
||
774 | addl $4,%ebx |
||
775 | movl %eax,(%edx) |
||
776 | decl %ecx |
||
777 | jnz LPatchLoop8 |
||
778 | |||
779 | popl %ebx |
||
780 | |||
781 | ret |
||
782 | |||
783 | #endif // id386 |