[Desktop-packages] [Bug 1988796] Re: Incorrect rendering triggered by cairo CAIRO_OPERATOR_SATURATE with subpixel positioning

2022-10-21 Thread Benjamin Gilbert
Verified fixed with libpixman-1-0 0.38.4-0ubuntu2. - The test program now reports "OK". - I also installed the openslide-tools package and visually confirmed that "openslide-write-png CMU-1.mrxs 2 10 1 1000 1000 out.png" produces corrupt output with the original package and reasonable

[Desktop-packages] [Bug 1988796] Re: Incorrect rendering triggered by cairo CAIRO_OPERATOR_SATURATE with subpixel positioning

2022-10-21 Thread Benjamin Gilbert
** Tags removed: verification-needed-focal ** Tags added: verification-done-focal -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to pixman in Ubuntu. https://bugs.launchpad.net/bugs/1988796 Title: Incorrect rendering triggered by cairo

[Desktop-packages] [Bug 1988796] Re: Incorrect rendering triggered by cairo CAIRO_OPERATOR_SATURATE with subpixel positioning

2022-10-17 Thread Benjamin Gilbert
Thanks for the help! -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to pixman in Ubuntu. https://bugs.launchpad.net/bugs/1988796 Title: Incorrect rendering triggered by cairo CAIRO_OPERATOR_SATURATE with subpixel positioning Status

[Desktop-packages] [Bug 1988796] Re: Incorrect rendering triggered by cairo CAIRO_OPERATOR_SATURATE with subpixel positioning

2022-10-14 Thread Benjamin Gilbert
Yup, the test program fails without the packages from the PPA and succeeds once they're installed. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to pixman in Ubuntu. https://bugs.launchpad.net/bugs/1988796 Title: Incorrect rendering

[Desktop-packages] [Bug 1988796] Re: Incorrect rendering triggered by cairo CAIRO_OPERATOR_SATURATE with subpixel positioning

2022-10-11 Thread Benjamin Gilbert
** Patch added: "Updated debdiff with dep3 headers added" https://bugs.launchpad.net/ubuntu/+source/pixman/+bug/1988796/+attachment/5623244/+files/2-0.38.4-0ubuntu2.debdiff -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to pixman in

[Desktop-packages] [Bug 1988796] Re: Incorrect rendering triggered by cairo CAIRO_OPERATOR_SATURATE with subpixel positioning

2022-10-11 Thread Benjamin Gilbert
[ Impact ] OpenSlide (libopenslide0 in Ubuntu) uses Cairo as its rendering backend, always with CAIRO_OPERATOR_SATURATE and sometimes with subpixel positioning (when reading certain file formats), and Cairo in turn invokes this code. As a result, some slides incorrectly render with large blank

[Desktop-packages] [Bug 1988796] Re: Incorrect rendering triggered by cairo CAIRO_OPERATOR_SATURATE with subpixel positioning

2022-09-05 Thread Benjamin Gilbert
This is a debdiff for the focal version of pixman, 0.38.4-0ubuntu1. I've built and installed this and verified that the test case now reports "OK". ** Patch added: "1-0.38.4-0ubuntu2.debdiff"

[Desktop-packages] [Bug 1988796] [NEW] Incorrect rendering triggered by cairo CAIRO_OPERATOR_SATURATE with subpixel positioning

2022-09-05 Thread Benjamin Gilbert
Public bug reported: pixman 0.38.4-0ubuntu1 in focal (and actually pixman 0.38.x generally) has a regression that causes incorrect rendering in some circumstances. This can be triggered by the use of cairo with CAIRO_OPERATOR_SATURATE and subpixel positioning, and causes OpenSlide