Bug 468276 - doesn't dither background
Summary: doesn't dither background
Keywords:
Status: CLOSED RAWHIDE
Alias: None
Product: Fedora
Classification: Fedora
Component: plymouth
Version: rawhide
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Ray Strode [halfline]
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2008-10-23 20:34 UTC by Bill Nottingham
Modified: 2014-03-17 03:16 UTC (History)
5 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2008-10-27 17:00:52 UTC
Type: ---
Embargoed:

Attachments (Terms of Use)

Description Bill Nottingham 2008-10-23 20:34:54 UTC 
Description of problem:

Best example is comparing the Solar plugin booted with vga=794 vs. vga=795;
with vga=794 it's pretty banded.

Version-Release number of selected component (if applicable):

plymouth-0.6.0-0.2008.10.21.2.fc10.x86_64
Comment 1 Ray Strode [halfline] 2008-10-23 21:39:36 UTC 
This is with solar or spinfinity?

We definitely dither gradients.
Comment 2 Bill Nottingham 2008-10-24 00:18:34 UTC 
I noticed it with solar. I'm not sure spinfinity uses enough colors to matter.
Comment 3 Ray Strode [halfline] 2008-10-24 13:31:09 UTC 
So what's probably going on here is solar uses a background image, while spinfinity uses a dithered generated gradient.

We should either dither the background image or give it a lot of alpha and overlay it on a gradient.
Comment 4 Charlie Brej 2008-10-25 18:08:55 UTC 
Patch submitted:
http://lists.freedesktop.org/archives/plymouth/2008-October/000006.html

Before: http://www.cs.man.ac.uk/~brejc8/temp/dither1.jpg
After : http://www.cs.man.ac.uk/~brejc8/temp/dither2.jpg
Comment 5 Ray Strode [halfline] 2008-10-27 17:00:52 UTC 
This is building in koji now... Thanks Charlie!
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