Dave Arnold wrote:
1) The new CFF rasterizer automatically increases the weight of fonts at small sizes, in order to maintain contrast and improve readability. To do this, it assumes the system is adjusting gamma for text (as Werner mentioned earlier). In most displays, I find a compromise of gamma 1.8 is best, but anything down to 1.4 should look ok. Your screen shot shows that that linearized blending is not being used on the text. That is, gamma adjustment is not being done, and your gamma is 1.0. Using gamma 1.0 has several negative effects on anti-aliasing; one is to make black-on-white text look heavier. So, we are effectively darkening the text twice. I don't know if this is a Fedora issue or a LibreOffice issue. FreeType does have a control to disable darkening, and that might help work around the issue if you can't get the system to do gamma adjustment.
Yes, your assumption is correct. X.org defaults to 1.0 gamma and any screenshot results in 1.0 gamma. Setting my X.org gamma to 1.8 makes my screen look like the surface of the sun. Not a good option.
[snip]
Please let me know if you have any questions. Thanks.
After further investigation I see that this has been discussed here previously as well as at Gnome. Thanks for your patience. I've updated the bug against the font with our findings. Hopefully everyone understands the issue now as this has been ongoing since the CFF engine was defaulted on.
_______________________________________________ Freetype mailing list [email protected] https://lists.nongnu.org/mailman/listinfo/freetype
