diff options
| author | artemp <artem@mapnik.org> | 2014-11-21 11:28:56 +0100 |
|---|---|---|
| committer | artemp <artem@mapnik.org> | 2014-11-21 11:28:56 +0100 |
| commit | 4af232dcf347723969aad01d7347ff2cdd8cf575 (patch) | |
| tree | 7e011fc019f7272b215f06897d892b1589310d83 /platform | |
| parent | 1e9b6611cc9a7aff0dc62c02f8ea49b38e8bfd78 (diff) | |
| download | qtlocation-mapboxgl-4af232dcf347723969aad01d7347ff2cdd8cf575.tar.gz | |
image_readers: premultiply alpha
Diffstat (limited to 'platform')
| -rw-r--r-- | platform/default/png_reader.cpp | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/platform/default/png_reader.cpp b/platform/default/png_reader.cpp index e9f38a9d3d..507db715a4 100644 --- a/platform/default/png_reader.cpp +++ b/platform/default/png_reader.cpp @@ -157,6 +157,7 @@ void png_reader<T>::read(unsigned x0, unsigned y0, unsigned w, unsigned h, char double gamma; if (png_get_gAMA(png_ptr, info_ptr, &gamma)) png_set_gamma(png_ptr, 2.2, gamma); + png_set_alpha_mode(png_ptr, PNG_ALPHA_PREMULTIPLIED, 2.2); if (x0 == 0 && y0 == 0 && w >= width_ && h >= height_) { |