| 376 | /* write a line of alpha channel data text */ |
| 377 | |
| 378 | int makealpha8(FILE **alpha8,char *fname,int *pal) |
| 379 | { |
| 380 | unsigned char alpha[256]; |
| 381 | char hex[513]; |
| 382 | int i; |
| 383 | |
| 384 | if (*alpha8==NULL) { |
| 385 | *alpha8=fopen("alpha8.dat","wt"); |
| 386 | if (*alpha8==NULL) return 0; |
| 387 | } |
| 388 | for (i=0;i<256;i++) alpha[i]=(unsigned char)(pal[i]>>24); |
| 389 | hexify(alpha,256,hex); |
| 390 | fprintf(*alpha8,"%s\n%s\n",fname,hex); |
| 391 | return 1; |
| 392 | } |
| 393 | |
| 394 | /* unpack a DXT packed color */ |
| 395 |