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Rev | Author | Line No. | Line |
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5153 | IgorA | 1 | |
2 | |||
3 | |||
4 | { |
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5 | if TGL_FEATURE_RENDER_BITS eq 24 |
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6 | mov ecx,[p2] |
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7 | mov eax,[ecx+offs_zbup_r] |
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8 | mov [colorR],ah ;colorR=p2.r>>8 |
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5208 | IgorA | 9 | mov eax,[ecx+offs_zbup_g] |
5153 | IgorA | 10 | mov [colorG],ah ;colorG=p2.g>>8 |
5208 | IgorA | 11 | mov eax,[ecx+offs_zbup_b] |
5153 | IgorA | 12 | mov [colorB],ah ;colorB=p2.b>>8 |
5208 | IgorA | 13 | ;else |
5187 | IgorA | 14 | ;color=RGB_TO_PIXEL(p2.r,p2.g,p2.b) |
6126 | IgorA | 15 | end if |
5153 | IgorA | 16 | } |
17 | |||
18 | |||
19 | { |
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20 | local .end_0 |
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5175 | IgorA | 21 | mov eax,[z] |
22 | shr eax,ZB_POINT_Z_FRAC_BITS |
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6126 | IgorA | 23 | cmp ax,word[esi+2*_a] ;if (zz >= pz[_a]) |
24 | jl .end_0 |
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5175 | IgorA | 25 | ;edi = pp |
26 | mov word[esi+2*_a],ax ;пишем в буфер глубины новое значение |
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6126 | IgorA | 27 | if TGL_FEATURE_RENDER_BITS eq 24 |
5153 | IgorA | 28 | mov al,[colorR] |
6111 | IgorA | 29 | mov ah,[colorG] |
30 | mov word[edi+3*_a],ax |
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31 | mov al,[colorB] |
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32 | mov byte[edi+3*_a +2],al |
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33 | ;else |
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5187 | IgorA | 34 | ;pp[_a]=color |
6126 | IgorA | 35 | end if |
5153 | IgorA | 36 | .end_0: |
5175 | IgorA | 37 | mov eax,[dzdx] |
38 | add [z],eax |
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39 | } |
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5153 | IgorA | 40 | |
41 | |||
6134 | IgorA | 42 | proc ZB_fillTriangleFlat, zb:dword, p0:dword, p1:dword, p2:dword |
5153 | IgorA | 43 | locals |
44 | if TGL_FEATURE_RENDER_BITS eq 24 |
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45 | colorR db ? |
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46 | colorG db ? |
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47 | colorB db ? ;unsigned char |
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48 | else |
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49 | color dd ? ;int |
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50 | end if |
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51 | include 'ztriangle.inc' |
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52 | |||
53 | |||
54 | ; Smooth filled triangle. |
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55 | ; The code below is very tricky :) |
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56 | ; |
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57 | |||
58 | |||
59 | INTERP_RGB equ 1 |
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60 | |||
61 | |||
62 | { |
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63 | } |
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64 | |||
65 | |||
66 | { |
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67 | local .end_0 |
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5187 | IgorA | 68 | mov eax,[z] |
5175 | IgorA | 69 | shr eax,ZB_POINT_Z_FRAC_BITS |
70 | cmp ax,word[esi+2*_a] ;if (zz >= pz[_a]) |
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6126 | IgorA | 71 | jl .end_0 |
5187 | IgorA | 72 | ;edi = pp |
73 | mov word[esi+2*_a],ax ;пишем в буфер глубины новое значение |
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6126 | IgorA | 74 | if TGL_FEATURE_RENDER_BITS eq 24 |
5153 | IgorA | 75 | mov ebx,[or1] |
6111 | IgorA | 76 | mov eax,[og1] |
77 | mov al,bh |
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78 | mov word[edi+3*_a],ax |
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79 | mov eax,[ob1] |
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5187 | IgorA | 80 | mov byte[edi+3*_a +2],ah |
81 | end if |
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82 | ;if TGL_FEATURE_RENDER_BITS eq 32 |
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6111 | IgorA | 83 | ;pp[_a] = RGB_TO_PIXEL(or1, og1, ob1) |
6126 | IgorA | 84 | ;end if |
6111 | IgorA | 85 | .end_0: |
5187 | IgorA | 86 | mov eax,[dzdx] |
5175 | IgorA | 87 | add [z],eax |
88 | mov eax,[dgdx] |
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5187 | IgorA | 89 | add [og1],eax |
90 | mov eax,[drdx] |
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91 | add [or1],eax |
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92 | mov eax,[dbdx] |
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93 | add [ob1],eax |
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94 | } |
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5153 | IgorA | 95 | |
96 | |||
6134 | IgorA | 97 | proc ZB_fillTriangleSmooth, zb:dword, p0:dword, p1:dword, p2:dword |
5153 | IgorA | 98 | locals |
99 | include 'ztriangle.inc' |
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100 | |||
101 | |||
6134 | IgorA | 102 | proc ZB_setTexture uses eax ebx, zb:dword, texture:dword |
5153 | IgorA | 103 | mov eax,[zb] |
104 | mov ebx,[texture] |
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105 | mov dword[eax+offs_zbuf_current_texture],ebx |
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106 | ret |
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107 | endp |
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108 | |||
109 | |||
110 | INTERP_ST equ 1 |
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111 | |||
112 | |||
113 | { |
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114 | mov eax,[zb] |
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5187 | IgorA | 115 | mov eax,[eax+offs_zbuf_current_texture] |
116 | mov [texture],eax |
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117 | } |
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5153 | IgorA | 118 | |
119 | |||
120 | { |
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121 | local .end_0 |
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5187 | IgorA | 122 | local .in_mem |
6134 | IgorA | 123 | mov eax,[z] |
5187 | IgorA | 124 | shr eax,ZB_POINT_Z_FRAC_BITS |
125 | cmp ax,word[esi+2*_a] ;if (zz >= pz[_a]) |
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6126 | IgorA | 126 | jl .end_0 |
5187 | IgorA | 127 | ;edi = pp |
5922 | IgorA | 128 | mov word[esi+2*_a],ax ;пишем в буфер глубины новое значение |
6126 | IgorA | 129 | if TGL_FEATURE_RENDER_BITS eq 24 |
5153 | IgorA | 130 | mov ebx,[t] |
6108 | IgorA | 131 | and ebx,0x3fc00000 |
132 | or ebx,[s] |
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133 | shr ebx,14 |
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134 | cmp ebx,256*256-1 ;проверка на выход за пределы текстуры |
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6134 | IgorA | 135 | jl .in_mem ;координата 1.0,1.0 может выползать |
136 | mov ebx,256*256-1 ;переход на последний пиксель текстуры |
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137 | .in_mem: |
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138 | imul ebx,3 |
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6108 | IgorA | 139 | add ebx,[texture] ;ptr = texture + (((t & 0x3fc00000) | s) >> 14) * 3 |
140 | mov ax,word[ebx] |
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141 | mov word[edi+3*_a],ax ;pp[3 * _a]= ptr[0,1] |
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142 | mov al,byte[ebx+2] |
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143 | mov byte[edi+3*_a +2],al ;pp[3 * _a + 2]= ptr[2] |
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144 | else |
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5153 | IgorA | 145 | ;pp[_a]=texture[((t & 0x3FC00000) | s) >> 14] |
6126 | IgorA | 146 | end if |
5153 | IgorA | 147 | .end_0: |
5187 | IgorA | 148 | mov eax,[dzdx] |
5175 | IgorA | 149 | add [z],eax |
150 | mov eax,[dsdx] |
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151 | add [s],eax |
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152 | mov eax,[dtdx] |
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153 | add [t],eax |
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154 | } |
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5153 | IgorA | 155 | |
156 | |||
6134 | IgorA | 157 | proc ZB_fillTriangleMapping, zb:dword, p0:dword, p1:dword, p2:dword |
5153 | IgorA | 158 | locals |
159 | texture dd ? ;PIXEL* |
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160 | include 'ztriangle.inc' |
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161 | |||
162 | |||
163 | ; Texture mapping with perspective correction. |
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164 | ; We use the gradient method to make less divisions. |
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165 | ; TODO: pipeline the division |
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166 | ; |
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167 | if 1 |
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168 | |||
169 | |||
170 | INTERP_STZ equ 1 |
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171 | |||
172 | |||
173 | |||
174 | |||
175 | { |
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176 | mov eax,[zb] |
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5187 | IgorA | 177 | mov eax,[eax+offs_zbuf_current_texture] |
178 | mov [texture],eax |
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179 | mov dword[esp-4],NB_INTERP |
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6108 | IgorA | 180 | fild dword[esp-4] |
181 | fild dword[dzdx] |
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5187 | IgorA | 182 | fst dword[fdzdx] ;fdzdx = (float)dzdx |
6108 | IgorA | 183 | fmul st0,st1 |
184 | fstp dword[fndzdx] ;fndzdx = NB_INTERP * fdzdx |
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185 | fld dword[fdzdx] |
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186 | fmul st0,st1 |
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187 | fstp dword[ndszdx] ;ndszdx = NB_INTERP * dszdx |
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188 | fmul dword[dtzdx] |
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189 | fstp dword[ndtzdx] ;ndtzdx = NB_INTERP * dtzdx |
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190 | } |
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5153 | IgorA | 191 | |
192 | |||
193 | { |
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194 | local .end_0 |
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5187 | IgorA | 195 | local .in_mem |
6134 | IgorA | 196 | mov eax,[z] |
5187 | IgorA | 197 | shr eax,ZB_POINT_Z_FRAC_BITS |
198 | cmp ax,word[esi+2*_a] ;if (zz >= pz[_a]) |
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6126 | IgorA | 199 | jl .end_0 |
5187 | IgorA | 200 | ;edi = pp |
5922 | IgorA | 201 | mov word[esi+2*_a],ax ;пишем в буфер глубины новое значение |
6126 | IgorA | 202 | if TGL_FEATURE_RENDER_BITS eq 24 |
5153 | IgorA | 203 | mov ebx,[t] |
6108 | IgorA | 204 | and ebx,0x3fc00000 |
205 | mov eax,[s] |
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206 | and eax,0x003fc000 |
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207 | or ebx,eax |
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208 | shr ebx,14 |
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209 | if 1 |
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6134 | IgorA | 210 | ; не знаю нужна ли сдесь эта проверка |
211 | ; функция ZB_fillTriangleMapping без нее не работает |
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212 | ; на всякий случай делаю и тут такое же |
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213 | cmp ebx,256*256-1 ;проверка на выход за пределы текстуры |
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214 | jl .in_mem ;координата 1.0,1.0 может выползать |
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215 | mov ebx,256*256-1 ;переход на последний пиксель текстуры |
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216 | .in_mem: |
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217 | end if |
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218 | imul ebx,3 |
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6108 | IgorA | 219 | add ebx,[texture] ;ptr = texture + (((t & 0x3fc00000) | (s & 0x003FC000)) >> 14) * 3 |
220 | mov ax,word[ebx] |
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221 | mov word[edi+3*_a],ax ;pp[3 * _a]= ptr[0,1] |
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222 | mov al,byte[ebx+2] |
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223 | mov byte[edi+3*_a +2],al ;pp[3 * _a + 2]= ptr[2] |
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224 | else |
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5153 | IgorA | 225 | ; pp[_a]=*(PIXEL *)((char *)texture+ |
226 | ; (((t & 0x3FC00000) | (s & 0x003FC000)) >> (17 - PSZSH))); |
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5187 | IgorA | 227 | end if |
5153 | IgorA | 228 | .end_0: |
5187 | IgorA | 229 | mov eax,[dzdx] |
5175 | IgorA | 230 | add [z],eax |
231 | mov eax,[dsdx] |
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232 | add [s],eax |
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233 | mov eax,[dtdx] |
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234 | add [t],eax |
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235 | } |
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5153 | IgorA | 236 | |
237 | |||
5175 | IgorA | 238 | |
239 | |||
6113 | IgorA | 240 | { |
5175 | IgorA | 241 | if TGL_FEATURE_RENDER_BITS eq 24 |
242 | mov eax,[x2] |
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6108 | IgorA | 243 | sar eax,16 |
244 | mov edi,[x1] |
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6113 | IgorA | 245 | sub eax,edi |
246 | mov [n],eax ;n = (x2 >> 16) - x1 |
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6111 | IgorA | 247 | fld1 |
6134 | IgorA | 248 | fild dword[z1] |
6108 | IgorA | 249 | fst dword[f_z] ;fz = (float)z1 |
6113 | IgorA | 250 | fdivp |
6108 | IgorA | 251 | fstp dword[zinv] ;zinv = 1.0 / fz |
252 | imul edi,PSZB |
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253 | add edi,[pp1] ;pp = (pp1 + x1 * PSZB) |
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254 | mov esi,[x1] |
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6126 | IgorA | 255 | shl esi,1 |
256 | add esi,[pz1] ;pz = pz1 + x1 |
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257 | mov eax,[z1] |
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6108 | IgorA | 258 | mov [z],eax ;z = z1 |
259 | mov eax,[sz1] |
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260 | mov [s_z],eax ;sz = sz1 |
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261 | mov eax,[tz1] |
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262 | mov [t_z],eax ;tz = tz1 |
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263 | align 4 |
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264 | .cycle_2: ;while (n>=(NB_INTERP-1)) |
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6111 | IgorA | 265 | cmp dword[n],NB_INTERP-1 |
266 | jl .cycle_2_end |
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6108 | IgorA | 267 | fld dword[zinv] |
268 | fld st0 |
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269 | fmul dword[s_z] ;ss = (sz * zinv) |
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270 | fist dword[s] ;s = (int) ss |
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271 | fmul dword[fdzdx] |
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272 | fchs |
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273 | fadd dword[dszdx] |
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274 | fmul dword[zinv] |
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275 | fistp dword[dsdx] ;dsdx = (int)( (dszdx - ss*fdzdx)*zinv ) |
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276 | fmul dword[t_z] ;tt = (tz * zinv) |
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277 | fist dword[t] ;t = (int) tt |
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278 | fmul dword[fdzdx] |
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279 | fchs |
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280 | fadd dword[dtzdx] |
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281 | fmul dword[zinv] |
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282 | fistp dword[dtdx] ;dtdx = (int)( (dtzdx - tt*fdzdx)*zinv ) |
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283 | fld1 |
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6134 | IgorA | 284 | fld dword[f_z] |
6113 | IgorA | 285 | fadd dword[fndzdx] |
6108 | IgorA | 286 | fst dword[f_z] ;fz += fndzdx |
6113 | IgorA | 287 | fdivp |
6108 | IgorA | 288 | fstp dword[zinv] ;zinv = 1.0 / fz |
289 | PUT_PIXEL 0 |
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290 | PUT_PIXEL 1 |
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291 | PUT_PIXEL 2 |
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292 | PUT_PIXEL 3 |
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293 | PUT_PIXEL 4 |
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294 | PUT_PIXEL 5 |
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295 | PUT_PIXEL 6 |
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296 | PUT_PIXEL 7 |
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297 | add esi,2*NB_INTERP ;pz += NB_INTERP |
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6126 | IgorA | 298 | add edi,NB_INTERP*PSZB ;pp += NB_INTERP * PSZB |
6108 | IgorA | 299 | sub dword[n],NB_INTERP ;n -= NB_INTERP |
6111 | IgorA | 300 | fld dword[ndszdx] |
6108 | IgorA | 301 | fadd dword[s_z] |
302 | fstp dword[s_z] ;sz += ndszdx |
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6111 | IgorA | 303 | fld dword[ndtzdx] |
6108 | IgorA | 304 | fadd dword[t_z] |
305 | fstp dword[t_z] ;tz += ndtzdx |
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306 | jmp .cycle_2 |
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307 | align 4 |
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6134 | IgorA | 308 | .cycle_2_end: |
6108 | IgorA | 309 | fld dword[zinv] |
310 | fld st0 |
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311 | fmul dword[s_z] ;ss = (sz * zinv) |
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312 | fist dword[s] ;s = (int) ss |
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313 | fmul dword[fdzdx] |
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314 | fchs |
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315 | fadd dword[dszdx] |
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316 | fmul dword[zinv] |
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317 | fistp dword[dsdx] ;dsdx = (int)( (dszdx - ss*fdzdx)*zinv ) |
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318 | fmul dword[t_z] ;tt = (tz * zinv) |
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319 | fist dword[t] ;t = (int) tt |
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320 | fmul dword[fdzdx] |
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321 | fchs |
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322 | fadd dword[dtzdx] |
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323 | fmul dword[zinv] |
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324 | fistp dword[dtdx] ;dtdx = (int)( (dtzdx - tt*fdzdx)*zinv ) |
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325 | align 4 |
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326 | .cycle_3: ;while (n>=0) |
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6111 | IgorA | 327 | cmp dword[n],0 |
328 | jl .cycle_3_end |
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6108 | IgorA | 329 | PUT_PIXEL 0 |
330 | add esi,2 ;pz += 1 |
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6126 | IgorA | 331 | add edi,PSZB ;pp += PSZB |
6108 | IgorA | 332 | dec dword[n] |
6111 | IgorA | 333 | jmp .cycle_3 |
6108 | IgorA | 334 | align 4 |
6134 | IgorA | 335 | .cycle_3_end: |
6108 | IgorA | 336 | end if |
5175 | IgorA | 337 | } |
338 | |||
339 | |||
6134 | IgorA | 340 | proc ZB_fillTriangleMappingPerspective, zb:dword, p0:dword, p1:dword, p2:dword |
5153 | IgorA | 341 | locals |
342 | texture dd ? ;PIXEL * |
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5175 | IgorA | 343 | fdzdx dd ? ;float |
344 | fndzdx dd ? ;float |
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5187 | IgorA | 345 | ndszdx dd ? ;float |
346 | ndtzdx dd ? ;float |
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347 | zinv dd ? ;float |
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6113 | IgorA | 348 | f_z dd ? ;float - переменная отвечающая за геометрию текстуры |
349 | include 'ztriangle.inc' |
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5153 | IgorA | 350 | |
351 | |||
352 | |||
353 | |||
354 | |||
355 | |||
356 | ; bits) |
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357 | |||
358 | |||
359 | INTERP_STZ equ 1 |
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360 | |||
361 | |||
362 | { |
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363 | mov eax,[zb] |
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5187 | IgorA | 364 | mov eax,[eax+offs_zbuf_current_texture] |
365 | mov [texture],eax |
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366 | } |
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5153 | IgorA | 367 | |
368 | |||
369 | { |
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370 | local .end_0 |
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5187 | IgorA | 371 | mov eax,[z] |
372 | shr eax,ZB_POINT_Z_FRAC_BITS |
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373 | cmp ax,word[esi+2*_a] ;if (zz >= pz[_a]) |
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6126 | IgorA | 374 | jl .end_0 |
5187 | IgorA | 375 | ;edi = pp |
5922 | IgorA | 376 | mov word[esi+2*_a],ax ;пишем в буфер глубины новое значение |
6126 | IgorA | 377 | fild dword[z] |
5187 | IgorA | 378 | fld dword[s_z] |
379 | fdiv st0,st1 |
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380 | fistp dword[esp-4] ;s = (int) (s_z / (float) z) |
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6111 | IgorA | 381 | fld dword[t_z] |
382 | fdiv st0,st1 |
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383 | fistp dword[esp-8] ;t = (int) (t_z / (float) z) |
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384 | mov eax,dword[esp-8] |
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385 | and eax,0x3FC00000 |
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386 | or eax,dword[esp-4] |
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387 | shr eax,12 ;14 |
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388 | add eax,[texture] |
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389 | mov eax,[eax] |
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390 | stosd ;pp[_a] = texture[((t & 0x3FC00000) | s) >> 14] |
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391 | sub edi,4 |
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392 | .end_0: |
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5187 | IgorA | 393 | mov eax,[dzdx] |
5175 | IgorA | 394 | add [z],eax |
395 | fld dword[dszdx] |
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5187 | IgorA | 396 | fadd dword[s_z] |
397 | fstp dword[s_z] |
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398 | fld dword,[dtzdx] |
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399 | fadd dword[t_z] |
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400 | fstp dword[t_z] |
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401 | } |
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5153 | IgorA | 402 | |
403 | |||
6134 | IgorA | 404 | proc ZB_fillTriangleMappingPerspective, zb:dword, p0:dword, p1:dword, p2:dword |
5153 | IgorA | 405 | locals |
406 | texture dd ? ;PIXEL* |
||
407 | include 'ztriangle.inc' |
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408 | |||
409 | |||
410 |