notgne2/tuxpaint-pencil-sharpener
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Gamma corrected '255' was coming out as '254.999985', so wrapping gamma-to-linear conversion in a ceil() call to avoid turning white into off-white (e.g., when loading an 800x600-window image into a 640x480-window Tux Paint; see Pere's email from this week).

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This commit is contained in:
William Kendrick 2011-07-25 17:00:55 +00:00
parent 451bd23460
commit 915e234f20
1 changed files with 4 additions and 4 deletions
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8
src/tuxpaint.c
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@ -22,7 +22,7 @@
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
(See COPYING.txt) (See COPYING.txt)
June 14, 2002 - June 24, 2011 June 14, 2002 - July 25, 2011
*/ */
@ -9256,9 +9256,9 @@ static SDL_Surface *thumbnail2(SDL_Surface * src, int max_x, int max_y,
ta = ta / tmp; ta = ta / tmp;
#ifdef GAMMA_CORRECTED_THUMBNAILS #ifdef GAMMA_CORRECTED_THUMBNAILS
tr = pow(tr, gamma_invert); tr = ceil(pow(tr, gamma_invert));
tg = pow(tg, gamma_invert); tg = ceil(pow(tg, gamma_invert));
tb = pow(tb, gamma_invert); tb = ceil(pow(tb, gamma_invert));
#endif #endif
if (keep_alpha == 0 && s->format->Amask != 0) if (keep_alpha == 0 && s->format->Amask != 0)