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Bug 1377 - SDL_image 1.2.11 corrupts png of PseudoClass type 8bit
Summary: SDL_image 1.2.11 corrupts png of PseudoClass type 8bit
Status: RESOLVED FIXED
Alias: None
Product: SDL_image
Classification: Unclassified
Component: misc (show other bugs)
Version: unspecified
Hardware: x86_64 Linux
: P2 critical
Assignee: Sam Lantinga
QA Contact: Sam Lantinga
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2012-01-17 22:46 UTC by alien
Modified: 2012-01-19 20:20 UTC (History)
0 users

See Also:

Attachments
Sample image (1.30 KB, image/png)
2012-01-18 04:53 UTC, Sam Lantinga 		Details
SDL_image-1.2.11-png_channels.patch (597 bytes, patch)
2012-01-18 14:21 UTC, alien 		Details | Diff
View All Add an attachment (proposed patch, testcase, etc.)

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Description alien 2012-01-17 22:46:56 UTC 
see https://bugs.mageia.org/show_bug.cgi?id=4175

i fear this may have been the problematic change: (unsure)
http://hg.libsdl.org/SDL_image/rev/ea460af4ceff
Comment 1 Sam Lantinga 2012-01-18 04:53:50 UTC 
Created attachment 781 [details]
Sample image

AL13N

i think this is the one
Comment 2 alien 2012-01-18 14:21:26 UTC 
Created attachment 785 [details]
SDL_image-1.2.11-png_channels.patch

when looking a the differences between a patch we carried in the 1.2.10 and the 1.2.11; i noted a difference in it, and after fixing that, it seemed to work.

since this is about a 256c png image it should be 1byte, not 3, thus this solves it for me.

thanks alot of the assistance. since i'm a mageia packager, i'm adding the patch to our SDL_image build.
Comment 3 Sam Lantinga 2012-01-19 20:20:17 UTC 
Fixed, thanks!
http://hg.libsdl.org/SDL_image/rev/7036dd36a22f