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Bug #78923 Artifacts when convoluting image with transparency
Submitted: 2019-12-07 10:57 UTC Modified: 2019-12-07 11:07 UTC
From: Assigned: cmb (profile)
Status: Closed Package: GD related
PHP Version: 7.3.12 OS: *
Private report: No CVE-ID: None
 [2019-12-07 10:57 UTC]
If gdImageConvolution() is applied to an image with a transparent
background, there can be black pixel artifacts (at the upper edge
of opaque parts, and at the top left of the image), what appears
to be a bug.

Test script:

Expected result:
No black pixels

Actual result:
Black pixel artifacts


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AllCommentsChangesGit/SVN commitsRelated reports
 [2019-12-07 10:58 UTC]
The following pull request has been associated:

Patch Name: ext/gd: fix new_a init error in gdImageConvolution()
On GitHub:
 [2019-12-07 11:07 UTC]
-Assigned To: +Assigned To: cmb
 [2019-12-07 11:10 UTC]
Automatic comment on behalf of
Log: Fix #78923: Artifacts when convoluting image with transparency
 [2019-12-07 11:10 UTC]
-Status: Assigned +Status: Closed
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