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Rev | Author | Line No. | Line |
---|---|---|---|
1245 | hidnplayr | 1 | ;------- Big thanks to majuma (www.majuma.xt.pl) for absolutelly great-- |
2 | ;------- 13h mode demos ------------------------------------------------ |
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3 | |||
4 | bump_triangle: |
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5 | ;------------------in - eax - x1 shl 16 + y1 ----------- |
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6 | ;---------------------- ebx - x2 shl 16 + y2 ----------- |
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7 | ;---------------------- ecx - x3 shl 16 + y3 ----------- |
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8 | ;---------------------- edx - pointer to bump map ------ |
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9 | ;---------------------- esi - pointer to environment map |
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10 | ;---------------------- edi - pointer to screen buffer-- |
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11 | ;---------------------- stack : bump coordinates-------- |
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12 | ;---------------------- environment coordinates- |
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13 | .b_x1 equ ebp+4 ; procedure don't save registers !!! |
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14 | .b_y1 equ ebp+6 ; each coordinate as word |
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15 | .b_x2 equ ebp+8 |
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16 | .b_y2 equ ebp+10 |
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17 | .b_x3 equ ebp+12 |
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18 | .b_y3 equ ebp+14 |
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19 | .e_x1 equ ebp+16 |
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20 | .e_y1 equ ebp+18 |
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21 | .e_x2 equ ebp+20 |
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22 | .e_y2 equ ebp+22 |
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23 | .e_x3 equ ebp+24 |
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24 | .e_y3 equ ebp+26 |
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25 | |||
26 | .t_bmap equ dword[ebp-4] |
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27 | .t_emap equ dword[ebp-8] |
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28 | .x1 equ word[ebp-10] |
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29 | .y1 equ word[ebp-12] |
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30 | .x2 equ word[ebp-14] |
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31 | .y2 equ word[ebp-16] |
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32 | .x3 equ word[ebp-18] |
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33 | .y3 equ word[ebp-20] |
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34 | |||
35 | .dx12 equ dword[ebp-24] |
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36 | .dbx12 equ dword[ebp-28] |
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37 | .dby12 equ dword[ebp-32] |
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38 | .dex12 equ dword[ebp-36] |
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39 | .dey12 equ dword[ebp-40] |
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40 | |||
41 | .dx13 equ dword[ebp-44] |
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42 | .dbx13 equ dword[ebp-48] |
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43 | .dby13 equ dword[ebp-52] |
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44 | .dex13 equ dword[ebp-56] |
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45 | .dey13 equ dword[ebp-60] |
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46 | |||
47 | .dx23 equ dword[ebp-64] |
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48 | .dbx23 equ dword[ebp-68] |
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49 | .dby23 equ dword[ebp-72] |
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50 | .dex23 equ dword[ebp-76] |
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51 | .dey23 equ dword[ebp-80] |
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52 | |||
53 | .cx1 equ dword[ebp-84] ; current variables |
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54 | .cx2 equ dword[ebp-88] |
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55 | .cbx1 equ dword[ebp-92] |
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56 | .cbx2 equ dword[ebp-96] |
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57 | .cby1 equ dword[ebp-100] |
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58 | .cby2 equ dword[ebp-104] |
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59 | .cex1 equ dword[ebp-108] |
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60 | .cex2 equ dword[ebp-112] |
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61 | .cey1 equ dword[ebp-116] |
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62 | .cey2 equ dword[ebp-120] |
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63 | |||
64 | mov ebp,esp |
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65 | push edx ; store bump map |
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66 | push esi ; store e. map |
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67 | ; sub esp,120 |
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68 | .sort3: ; sort triangle coordinates... |
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69 | cmp ax,bx |
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70 | jle .sort1 |
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71 | xchg eax,ebx |
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72 | mov edx,dword[.b_x1] |
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73 | xchg edx,dword[.b_x2] |
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74 | mov dword[.b_x1],edx |
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75 | mov edx,dword[.e_x1] |
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76 | xchg edx,dword[.e_x2] |
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77 | mov dword[.e_x1],edx |
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78 | .sort1: |
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79 | cmp bx,cx |
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80 | jle .sort2 |
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81 | xchg ebx,ecx |
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82 | mov edx,dword[.b_x2] |
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83 | xchg edx,dword[.b_x3] |
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84 | mov dword[.b_x2],edx |
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85 | mov edx,dword[.e_x2] |
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86 | xchg edx,dword[.e_x3] |
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87 | mov dword[.e_x2],edx |
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88 | jmp .sort3 |
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89 | .sort2: |
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90 | push eax ; store triangle coords in variables |
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91 | push ebx |
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92 | push ecx |
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93 | |||
94 | mov edx,eax ; eax,ebx,ecx are ORd together into edx which means that |
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95 | or edx,ebx ; if any *one* of them is negative a sign flag is raised |
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96 | or edx,ecx |
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97 | test edx,80000000h ; Check only X |
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98 | jne .loop23_done |
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99 | |||
100 | cmp .x1,SIZE_X ; { |
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101 | jg .loop23_done |
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102 | cmp .x2,SIZE_X ; This can be optimized with effort |
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103 | jg .loop23_done |
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104 | cmp .x3,SIZE_X |
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105 | jg .loop23_done ; { |
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106 | |||
107 | |||
108 | mov bx,.y2 ; calc delta 12 |
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109 | sub bx,.y1 |
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110 | jnz .bt_dx12_make |
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111 | mov ecx,5 |
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112 | xor edx,edx |
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113 | @@: |
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114 | push edx ;dword 0 |
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115 | loop @b |
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116 | jmp .bt_dx12_done |
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117 | .bt_dx12_make: |
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118 | mov ax,.x2 |
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119 | sub ax,.x1 |
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120 | cwde |
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121 | movsx ebx,bx |
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122 | shl eax,ROUND |
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123 | cdq |
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124 | idiv ebx |
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125 | ; mov .dx12,eax |
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126 | push eax |
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127 | |||
128 | mov ax,word[.b_x2] |
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129 | sub ax,word[.b_x1] |
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130 | cwde |
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131 | shl eax,ROUND |
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132 | cdq |
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133 | idiv ebx |
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134 | ; mov .dbx12,eax |
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135 | push eax |
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136 | |||
137 | mov ax,word[.b_y2] |
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138 | sub ax,word[.b_y1] |
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139 | cwde |
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140 | shl eax,ROUND |
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141 | cdq |
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142 | idiv ebx |
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143 | ; mov .dby12,eax |
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144 | push eax |
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145 | |||
146 | mov ax,word[.e_x2] |
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147 | sub ax,word[.e_x1] |
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148 | cwde |
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149 | shl eax,ROUND |
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150 | cdq |
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151 | idiv ebx |
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152 | ; mov .dex12,eax |
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153 | push eax |
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154 | |||
155 | mov ax,word[.e_y2] |
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156 | sub ax,word[.e_y1] |
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157 | cwde |
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158 | shl eax,ROUND |
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159 | cdq |
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160 | idiv ebx |
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161 | ; mov .dey12,eax |
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162 | push eax |
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163 | .bt_dx12_done: |
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164 | |||
165 | mov bx,.y3 ; calc delta13 |
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166 | sub bx,.y1 |
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167 | jnz .bt_dx13_make |
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168 | mov ecx,5 |
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169 | xor edx,edx |
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170 | @@: |
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171 | push edx ;dword 0 |
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172 | loop @b |
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173 | jmp .bt_dx13_done |
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174 | .bt_dx13_make: |
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175 | mov ax,.x3 |
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176 | sub ax,.x1 |
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177 | cwde |
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178 | movsx ebx,bx |
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179 | shl eax,ROUND |
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180 | cdq |
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181 | idiv ebx |
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182 | ; mov .dx13,eax |
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183 | push eax |
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184 | |||
185 | mov ax,word[.b_x3] |
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186 | sub ax,word[.b_x1] |
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187 | cwde |
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188 | shl eax,ROUND |
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189 | cdq |
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190 | idiv ebx |
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191 | ; mov .dbx13,eax |
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192 | push eax |
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193 | |||
194 | mov ax,word[.b_y3] |
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195 | sub ax,word[.b_y1] |
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196 | cwde |
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197 | shl eax,ROUND |
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198 | cdq |
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199 | idiv ebx |
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200 | ; mov .dby13,eax |
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201 | push eax |
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202 | |||
203 | mov ax,word[.e_x3] |
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204 | sub ax,word[.e_x1] |
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205 | cwde |
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206 | shl eax,ROUND |
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207 | cdq |
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208 | idiv ebx |
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209 | ; mov .dex13,eax |
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210 | push eax |
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211 | |||
212 | mov ax,word[.e_y3] |
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213 | sub ax,word[.e_y1] |
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214 | cwde |
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215 | shl eax,ROUND |
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216 | cdq |
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217 | idiv ebx |
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218 | ; mov .dey13,eax |
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219 | push eax |
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220 | .bt_dx13_done: |
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221 | |||
222 | mov bx,.y3 ; calc delta23 |
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223 | sub bx,.y2 |
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224 | jnz .bt_dx23_make |
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225 | mov ecx,5 |
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226 | xor edx,edx |
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227 | @@: |
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228 | push edx ;dword 0 |
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229 | loop @b |
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230 | jmp .bt_dx23_done |
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231 | .bt_dx23_make: |
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232 | mov ax,.x3 |
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233 | sub ax,.x2 |
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234 | cwde |
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235 | movsx ebx,bx |
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236 | shl eax,ROUND |
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237 | cdq |
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238 | idiv ebx |
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239 | ; mov .dx23,eax |
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240 | push eax |
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241 | |||
242 | mov ax,word[.b_x3] |
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243 | sub ax,word[.b_x2] |
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244 | cwde |
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245 | shl eax,ROUND |
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246 | cdq |
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247 | idiv ebx |
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248 | ; mov .dbx23,eax |
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249 | push eax |
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250 | |||
251 | mov ax,word[.b_y3] |
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252 | sub ax,word[.b_y2] |
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253 | cwde |
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254 | shl eax,ROUND |
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255 | cdq |
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256 | idiv ebx |
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257 | ; mov .dby23,eax |
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258 | push eax |
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259 | |||
260 | mov ax,word[.e_x3] |
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261 | sub ax,word[.e_x2] |
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262 | cwde |
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263 | shl eax,ROUND |
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264 | cdq |
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265 | idiv ebx |
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266 | ; mov .dex23,eax |
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267 | push eax |
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268 | |||
269 | mov ax,word[.e_y3] |
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270 | sub ax,word[.e_y2] |
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271 | cwde |
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272 | shl eax,ROUND |
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273 | cdq |
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274 | idiv ebx |
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275 | ; mov .dey23,eax |
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276 | push eax |
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277 | |||
278 | ; sub esp,40 |
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279 | .bt_dx23_done: |
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280 | |||
281 | movsx eax,.x1 |
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282 | shl eax,ROUND |
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283 | ; mov .cx1,eax |
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284 | ; mov .cx2,eax |
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285 | push eax |
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286 | push eax |
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287 | |||
288 | movsx eax,word[.b_x1] |
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289 | shl eax,ROUND |
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290 | ; mov .cbx1,eax |
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291 | ; mov .cbx2,eax |
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292 | push eax |
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293 | push eax |
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294 | |||
295 | movsx eax,word[.b_y1] |
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296 | shl eax,ROUND |
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297 | ; mov .cby1,eax |
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298 | ; mov .cby2,eax |
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299 | push eax |
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300 | push eax |
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301 | |||
302 | movsx eax,word[.e_x1] |
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303 | shl eax,ROUND |
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304 | ;mov .cex1,eax |
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305 | ;mov .cex2,eax |
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306 | push eax |
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307 | push eax |
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308 | |||
309 | movsx eax,word[.e_y1] |
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310 | shl eax,ROUND |
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311 | ;mov .cey1,eax |
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312 | ;mov .cey2,eax |
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313 | push eax |
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314 | push eax |
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315 | |||
316 | movzx ecx,.y1 |
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317 | cmp cx,.y2 |
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318 | jge .loop12_done |
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319 | .loop12: |
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320 | call .call_bump_line |
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321 | |||
322 | mov eax,.dx13 |
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323 | add .cx1,eax |
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324 | mov eax,.dx12 |
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325 | add .cx2,eax |
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326 | |||
327 | mov eax,.dbx13 |
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328 | add .cbx1,eax |
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329 | mov eax,.dbx12 |
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330 | add .cbx2,eax |
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331 | mov eax,.dby13 |
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332 | add .cby1,eax |
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333 | mov eax,.dby12 |
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334 | add .cby2,eax |
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335 | |||
336 | mov eax,.dex13 |
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337 | add .cex1,eax |
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338 | mov eax,.dex12 |
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339 | add .cex2,eax |
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340 | mov eax,.dey13 |
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341 | add .cey1,eax |
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342 | mov eax,.dey12 |
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343 | add .cey2,eax |
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344 | |||
345 | inc ecx |
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346 | cmp cx,.y2 |
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347 | jl .loop12 |
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348 | .loop12_done: |
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349 | movzx ecx,.y2 |
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350 | cmp cx,.y3 |
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351 | jge .loop23_done |
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352 | |||
353 | movzx eax,.x2 |
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354 | shl eax,ROUND |
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355 | mov .cx2,eax |
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356 | |||
357 | movzx eax,word[.b_x2] |
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358 | shl eax,ROUND |
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359 | mov .cbx2,eax |
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360 | |||
361 | movzx eax,word[.b_y2] |
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362 | shl eax,ROUND |
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363 | mov .cby2,eax |
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364 | |||
365 | movzx eax,word[.e_x2] |
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366 | shl eax,ROUND |
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367 | mov .cex2,eax |
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368 | |||
369 | movzx eax,word[.e_y2] |
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370 | shl eax,ROUND |
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371 | mov .cey2,eax |
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372 | |||
373 | .loop23: |
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374 | call .call_bump_line |
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375 | |||
376 | mov eax,.dx13 |
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377 | add .cx1,eax |
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378 | mov eax,.dx23 |
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379 | add .cx2,eax |
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380 | |||
381 | mov eax,.dbx13 |
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382 | add .cbx1,eax |
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383 | mov eax,.dbx23 |
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384 | add .cbx2,eax |
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385 | mov eax,.dby13 |
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386 | add .cby1,eax |
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387 | mov eax,.dby23 |
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388 | add .cby2,eax |
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389 | |||
390 | mov eax,.dex13 |
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391 | add .cex1,eax |
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392 | mov eax,.dex23 |
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393 | add .cex2,eax |
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394 | mov eax,.dey13 |
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395 | add .cey1,eax |
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396 | mov eax,.dey23 |
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397 | add .cey2,eax |
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398 | |||
399 | inc ecx |
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400 | cmp cx,.y3 |
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401 | jl .loop23 |
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402 | .loop23_done: |
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403 | mov esp,ebp |
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404 | ret 24 |
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405 | |||
406 | .call_bump_line: |
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407 | |||
408 | ; push ebp |
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409 | ; push ecx |
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410 | pushad |
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411 | |||
412 | push .t_emap |
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413 | push .t_bmap |
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414 | push .cey2 |
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415 | push .cex2 |
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416 | push .cey1 |
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417 | push .cex1 |
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418 | push .cby2 |
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419 | push .cbx2 |
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420 | push .cby1 |
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421 | push .cbx1 |
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422 | push ecx |
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423 | |||
424 | mov eax,.cx1 |
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425 | sar eax,ROUND |
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426 | mov ebx,.cx2 |
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427 | sar ebx,ROUND |
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428 | |||
429 | call bump_line |
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430 | |||
431 | popad |
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432 | ret |
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433 | bump_line: |
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434 | ;--------------in: eax - x1 |
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435 | ;-------------- ebx - x2 |
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436 | ;-------------- edi - pointer to screen buffer |
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437 | ;stack - another parameters : |
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438 | .y equ dword [ebp+4] |
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439 | .bx1 equ dword [ebp+8] ; --- |
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440 | .by1 equ dword [ebp+12] ; | |
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441 | .bx2 equ dword [ebp+16] ; | |
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442 | .by2 equ dword [ebp+20] ; |> bump and env coords |
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443 | .ex1 equ dword [ebp+24] ; |> shifted shl ROUND |
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444 | .ey1 equ dword [ebp+28] ; | |
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445 | .ex2 equ dword [ebp+32] ; | |
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446 | .ey2 equ dword [ebp+36] ; --- |
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447 | .bmap equ dword [ebp+40] |
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448 | .emap equ dword [ebp+44] |
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449 | |||
450 | .x1 equ dword [ebp-4] |
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451 | .x2 equ dword [ebp-8] |
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452 | .dbx equ dword [ebp-12] |
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453 | .dby equ dword [ebp-16] |
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454 | .dex equ dword [ebp-20] |
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455 | .dey equ dword [ebp-24] |
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456 | .cbx equ dword [ebp-28] |
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457 | .cby equ dword [ebp-32] |
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458 | .cex equ dword [ebp-36] |
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459 | .cey equ dword [ebp-40] |
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460 | mov ebp,esp |
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461 | |||
462 | mov ecx,.y |
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463 | or ecx,ecx |
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464 | jl .bl_end |
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465 | cmp ecx,SIZE_Y |
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466 | jge .bl_end |
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467 | |||
468 | cmp eax,ebx |
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469 | jl .bl_ok |
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470 | je .bl_end |
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471 | |||
472 | xchg eax,ebx |
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473 | |||
474 | mov edx,.bx1 |
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475 | xchg edx,.bx2 |
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476 | mov .bx1,edx |
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477 | mov edx,.by1 |
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478 | xchg edx,.by2 |
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479 | mov .by1,edx |
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480 | |||
481 | mov edx,.ex1 |
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482 | xchg edx,.ex2 |
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483 | mov .ex1,edx |
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484 | mov edx,.ey1 |
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485 | xchg edx,.ey2 |
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486 | mov .ey1,edx |
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487 | .bl_ok: |
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488 | push eax |
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489 | push ebx ;store x1, x2 |
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490 | |||
491 | mov eax,SIZE_X*3 |
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492 | mov ebx,.y |
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493 | mul ebx |
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494 | mov ecx,.x1 |
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495 | lea ecx,[ecx*3] |
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496 | add eax,ecx |
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497 | add edi,eax |
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498 | |||
499 | mov ecx,.x2 |
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500 | sub ecx,.x1 |
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501 | |||
502 | mov eax,.bx2 ; calc .dbx |
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503 | sub eax,.bx1 |
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504 | cdq |
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505 | idiv ecx |
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506 | push eax |
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507 | |||
508 | mov eax,.by2 ; calc .dby |
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509 | sub eax,.by1 |
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510 | cdq |
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511 | idiv ecx |
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512 | push eax |
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513 | |||
514 | mov eax,.ex2 ; calc .dex |
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515 | sub eax,.ex1 |
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516 | cdq |
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517 | idiv ecx |
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518 | push eax |
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519 | |||
520 | mov eax,.ey2 ; calc .dey |
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521 | sub eax,.ey1 |
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522 | cdq |
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523 | idiv ecx |
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524 | push eax |
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525 | |||
526 | push .bx1 |
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527 | push .by1 |
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528 | push .ex1 |
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529 | push .ey1 |
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530 | .draw: |
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531 | ; if TEX = SHIFTING ;bump drawing only in shifting mode |
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532 | |||
533 | mov eax,.cby |
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534 | sar eax,ROUND |
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535 | shl eax,TEX_SHIFT |
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536 | mov esi,.cbx |
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537 | sar esi,ROUND |
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538 | add esi,eax |
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539 | |||
540 | mov ebx,esi |
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541 | dec ebx |
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542 | and ebx,TEXTURE_SIZE |
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543 | add ebx,.bmap |
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544 | movzx eax,byte [ebx] |
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545 | |||
546 | mov ebx,esi |
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547 | inc ebx |
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548 | and ebx,TEXTURE_SIZE |
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549 | add ebx,.bmap |
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550 | movzx ebx,byte [ebx] |
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551 | sub eax,ebx |
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552 | |||
553 | mov ebx,esi |
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554 | sub ebx,TEX_X |
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555 | and ebx,TEXTURE_SIZE |
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556 | add ebx,.bmap |
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557 | movzx edx,byte [ebx] |
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558 | |||
559 | mov ebx,esi |
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560 | add ebx,TEX_X |
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561 | and ebx,TEXTURE_SIZE |
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562 | add ebx,.bmap |
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563 | movzx ebx,byte [ebx] |
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564 | sub edx,ebx |
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565 | |||
566 | mov ebx,.cex ;.cex - current env map X |
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567 | sar ebx,ROUND |
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568 | add eax,ebx ; eax - modified x coord |
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569 | |||
570 | mov ebx,.cey ;.cey - current env map y |
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571 | sar ebx,ROUND |
||
572 | add edx,ebx ; edx - modified y coord |
||
573 | |||
574 | or eax,eax |
||
575 | jl .black |
||
576 | cmp eax,TEX_X |
||
577 | jg .black |
||
578 | or edx,edx |
||
579 | jl .black |
||
580 | cmp edx,TEX_Y |
||
581 | jg .black |
||
582 | |||
583 | shl edx,TEX_SHIFT |
||
584 | add edx,eax |
||
585 | lea edx,[edx*3] |
||
586 | add edx,.emap |
||
587 | mov eax,dword[edx] |
||
588 | jmp .put_pixel |
||
589 | .black: |
||
590 | xor eax,eax |
||
591 | .put_pixel: |
||
592 | stosd |
||
593 | dec edi |
||
594 | |||
595 | mov eax,.dbx |
||
596 | add .cbx,eax |
||
597 | mov eax,.dby |
||
598 | add .cby,eax |
||
599 | mov eax,.dex |
||
600 | add .cex,eax |
||
601 | mov eax,.dey |
||
602 | add .cey,eax |
||
603 | |||
604 | dec ecx |
||
605 | jnz .draw |
||
606 | ; end if |
||
607 | .bl_end: |
||
608 | mov esp,ebp |
||
609 | ret 44 |