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