Resizing PNG-24 images causes all alpha channel transparency to be lost and transparent pixels to be turned black
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	• bzimport
	Aug 2 2007, 10:54 PM

Description

Author: t.laqua

Description:
When a PNG-24 image using alpha channel transparency is resized (i.e. thumbnailed), all transparent areas are turned black - transparency is lost.

Known issue w/ PHP-GD, Patch attached.

-Tim Laqua

Version: 1.11.x
Severity: normal
URL: http://www.poxwiki.com/Sandbox

Details

Reference: bz10783

Event Timeline

• bzimport raised the priority of this task from to Medium.Nov 21 2014, 9:50 PM

• bzimport added a project: MediaWiki-File-management.

• bzimport set Reference to bz10783.

• bzimport added a subscriber: Unknown Object (MLST).

• bzimport created this task.Aug 2 2007, 10:54 PM

t.laqua wrote:

Bitmap.php Patch f/ PNG-24 Alpha Trans fix

Attached:

Bitmap.diff1 KBDownload

t.laqua wrote:

Patched.

t.laqua wrote:

Fixed in r25023.

• Gilles added a project: Multimedia.Dec 4 2014, 10:49 AM

• Gilles moved this task from Untriaged to Done on the Multimedia board.

	F4079: Bitmap.diff
	Nov 21 2014, 9:50 PM

Resizing PNG-24 images causes all alpha channel transparency to be lost and transparent pixels to be turned blackClosed, ResolvedPublicActions

Description

Details

Event Timeline

Resizing PNG-24 images causes all alpha channel transparency to be lost and transparent pixels to be turned black
Closed, ResolvedPublic
Actions