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comparison tools/gfxconv.c @ 2021:c8c698bb99b6

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Calculate number of required bitplanes more correctly.
author Matti Hamalainen <ccr@tnsp.org>
date Thu, 25 Oct 2018 18:55:38 +0300
parents 09d548b08150
children eb6dafdd36dc
comparison
equal deleted inserted replaced
2020:57a2527ff63d 2021:c8c698bb99b6
1379 case DM_IMGFMT_IFF: 1379 case DM_IMGFMT_IFF:
1380 spec->compression = 1; 1380 spec->compression = 1;
1381 spec->nplanes = 0; 1381 spec->nplanes = 0;
1382 for (int n = 8; n >= 0;) 1382 for (int n = 8; n >= 0;)
1383 { 1383 {
1384 if (image->ncolors & (1 << n)) 1384 if ((image->ncolors - 1) & (1 << n))
1385 { 1385 {
1386 spec->nplanes = n; 1386 spec->nplanes = n + 1;
1387 break; 1387 break;
1388 } 1388 }
1389 else 1389 else
1390 n--; 1390 n--;
1391 } 1391 }