From: christopher dot bertram at yahoo dot de
Operating system: Win Xp, Win Vista x64
PHP version: 5.2.5
PHP Bug Type: GD related
Bug description: brocken transparency of imagearc in truecolorimages using
blendingmode
Description:
------------
the imagearc and imagefilledarc functions don't seem to support images
using truecolor and alphablending.
In the following example I don't need alphablending, but I require it to
use other images as background.
Reproduce code:
---------------
<?php
//outputs strange image
$img = imagecreatetruecolor(100, 100);
//works fine using palette image instead
//$img = imagecreate(100, 100);
imagesavealpha($img, true);
imagealphablending($img, true);
$transparent = imagecolorallocatealpha($img, 255, 255, 255, 80);
//make the background transparent
imagefill($img, 0, 0, $transparent);
$color = imagecolorallocatealpha($img, 0, 255, 0, 100);
imagefilledarc($img, 49, 49, 100, 100, 0 , 359, $color, IMG_ARC_PIE);
header('content-type: image/png');
imagepng($img);
?>
Expected result:
----------------
Same result as using the paletteimage version.
Actual result:
--------------
Strange looking arcs and filled arcs.
--
Edit bug report at http://bugs.php.net/?id=43828&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=43828&r=trysnapshot44
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=43828&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=43828&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=43828&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=43828&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=43828&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=43828&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=43828&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=43828&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=43828&r=support
Expected behavior: http://bugs.php.net/fix.php?id=43828&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=43828&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=43828&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=43828&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=43828&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=43828&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=43828&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=43828&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=43828&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=43828&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=43828&r=mysqlcfg
