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Fixes rgbgfx linkage issues with old libpng (pre 1.4.2)

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This commit is contained in:
Francisco Requena
2016-12-17 04:04:45 +01:00
parent a079a69b7c
commit 0a8401741d
1 changed files with 4 additions and 0 deletions
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4
src/gfx/makepng.c
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@@ -163,7 +163,11 @@ input_png_file(struct Options opts, struct PNGImage *img)
* Also unfortunately, this sets it at 8 bit, and I can't find any
* option to reduce to 2 or 1 bit.
*/
#if PNG_LIBPNG_VER < 10402
png_set_dither(img->png, palette, colors, colors, NULL, 1);
#else
png_set_quantize(img->png, palette, colors, colors, NULL, 1);
#endif
if (!has_palette) {
png_set_PLTE(img->png, img->info, palette, colors);