#28949 [NEW]: imagetruecolortopalette - colors in palette are missing and filled with white

From: Date: Mon, 28 Jun 2004 16:27:21 +0000
Subject: #28949 [NEW]: imagetruecolortopalette - colors in palette are missing and filled with white
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-61441@lists.php.net to get a copy of this message 
From:             vkary at web dot de
Operating system: WinXP & Linux
PHP version:      4.3.7
PHP Bug Type:     GD related
Bug description:  imagetruecolortopalette - colors in palette are missing and filled with white

Description:
------------
When trying to reduce a true color image to a palette image with for
example 16 or 32 colors, many colors are missing from the palette and
filled with white color instead.

Reproduce code:
---------------
<?php
$src_im = imagecreatefromjpeg ("ara.jpg");

imagetruecolortopalette ($src_im, false, 16);

Header("Content-type: image/png");
imagepng($src_im);
?>

Expected result:
----------------
The color palette should have exactly the number of colors specified in
imagetruecolortopalette (16 for example) an the color reduced image should
look like this:(created with PHP 4.3.2, GD-Lib 2.0.12)

http://www.textilenetwork.de/php/ara16_4_3_2.png

The color palette for the image above:

http://www.textilenetwork.de/php/ara16_4_3_2_pal.png

or for 32 colors:

http://www.textilenetwork.de/php/ara32_4_3_2.png
http://www.textilenetwork.de/php/ara32_4_3_2_pal.png


Actual result:
--------------
The images and color palettes with PHP 4.3.6: (& PHP 4.3.7)

http://www.textilenetwork.de/php/ara16_4_3_6.png
http://www.textilenetwork.de/php/ara16_4_3_6_pal.png

http://www.textilenetwork.de/php/ara32_4_3_6.png
http://www.textilenetwork.de/php/ara32_4_3_6_pal.png


-- 
Edit bug report at http://bugs.php.net/?id=28949&edit=1
-- 
Try a CVS snapshot (php4):  http://bugs.php.net/fix.php?id=28949&r=trysnapshot4
Try a CVS snapshot (php5):  http://bugs.php.net/fix.php?id=28949&r=trysnapshot5
Fixed in CVS:               http://bugs.php.net/fix.php?id=28949&r=fixedcvs
Fixed in release:           http://bugs.php.net/fix.php?id=28949&r=alreadyfixed
Need backtrace:             http://bugs.php.net/fix.php?id=28949&r=needtrace
Need Reproduce Script:      http://bugs.php.net/fix.php?id=28949&r=needscript
Try newer version:          http://bugs.php.net/fix.php?id=28949&r=oldversion
Not developer issue:        http://bugs.php.net/fix.php?id=28949&r=support
Expected behavior:          http://bugs.php.net/fix.php?id=28949&r=notwrong
Not enough info:            http://bugs.php.net/fix.php?id=28949&r=notenoughinfo
Submitted twice:            http://bugs.php.net/fix.php?id=28949&r=submittedtwice
register_globals:           http://bugs.php.net/fix.php?id=28949&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=28949&r=php3
Daylight Savings:           http://bugs.php.net/fix.php?id=28949&r=dst
IIS Stability:              http://bugs.php.net/fix.php?id=28949&r=isapi
Install GNU Sed:            http://bugs.php.net/fix.php?id=28949&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=28949&r=float

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