Bug 143576 - Red hatch has faded colors in Skia/GTK3 for a sphere (3D object). Anti-aliasing involved
Summary: Red hatch has faded colors in Skia/GTK3 for a sphere (3D object). Anti-aliasi...
Status: UNCONFIRMED
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: Impress (show other bugs)
Version:
(earliest affected)
Inherited From OOo
Hardware: All All
: medium normal
Assignee: Not Assigned
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2021-07-28 09:14 UTC by Telesto
Modified: 2021-08-05 18:30 UTC (History)
1 user (show)

See Also:
Crash report or crash signature:

Attachments
Comparison Screenshot (204.99 KB, application/pdf)
2021-07-28 09:14 UTC, Telesto 		Details
View All Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description Telesto 2021-07-28 09:14:12 UTC 
Description:
Red hatch has faded colors in Skia/GTK3 compared to GDI for a sphere (3D object). GDI matches my expectations

Steps to Reproduce:
1. Open attachment 173897 [details] (on Windows with Skia)
2. Press F5.. 
3. Switch to GDI and press F5 again.. compare

Actual Results:
Faded colers

Expected Results:
GDI looks


Reproducible: Always


User Profile Reset: No



Additional Info:
Found in
Version: 7.3.0.0.alpha0+ (x64) / LibreOffice Community
Build ID: 2a151d1d5bc055d5e0011460b6ec42ea9f34f880
CPU threads: 4; OS: Windows 6.3 Build 9600; UI render: Skia/Raster; VCL: win
Locale: nl-NL (nl_NL); UI: en-US
Calc: CL

Fine in
Version: 7.0.0.0.beta1+ (x64)
Build ID: 2891e91a513520d68ea2b8c59c14335861a15253
CPU threads: 4; OS: Windows 6.3 Build 9600; UI render: Skia/Raster; VCL: win
Locale: nl-NL (nl_NL); UI: en-US
Calc: CL
Comment 1 Telesto 2021-07-28 09:14:33 UTC 
Created attachment 173908 [details]
Comparison Screenshot
Comment 2 Buovjaga 2021-08-04 16:03:30 UTC 
There is a new crash regression for this file: bug 143728
Comment 3 Telesto 2021-08-05 17:53:34 UTC 
Hmm.. apparently anti-aliasing being responsible for the color shift. Turned off it's OK. Turned on it's getting bad
Comment 4 Buovjaga 2021-08-05 18:16:40 UTC 
(In reply to Telesto from comment #3)
> Hmm.. apparently anti-aliasing being responsible for the color shift. Turned
> off it's OK. Turned on it's getting bad

So is it really a regression or a case of the setting with different versions you tried? I didn't see any difference when aliasing was on in 7.0 repo oldest
Comment 5 Telesto 2021-08-05 18:30:06 UTC 
(In reply to Buovjaga from comment #4)
> So is it really a regression or a case of the setting with different
> versions you tried? I didn't see any difference when aliasing was on in 7.0
> repo oldest

Well you're right.. Also seen in
LibreOffice 3.5.7.2 
Build ID: 3215f89-f603614-ab984f2-7348103-1225a5b