ID: 39273 Updated by: [EMAIL PROTECTED] Reported By: seth at pricepages dot org -Status: Open +Status: Feedback Bug Type: GD related Operating System: Mac 10.4 PHP Version: 5.1.6 New Comment:
Please try using this CVS snapshot: http://snaps.php.net/php5.2-latest.tar.gz For Windows: http://snaps.php.net/win32/php5.2-win32-latest.zip Previous Comments: ------------------------------------------------------------------------ [2006-10-27 04:17:23] seth at pricepages dot org Description: ------------ imagecopyresampled() should be copying the alpha channel, but it doesn't seem to be doing so. This is a palette based source image being copied to a true color image. If you use imagecopy() instead, the image copies as expected (mostly). Reproduce code: --------------- <?php $small = imagecreatefrompng('http://leopold.sage.wisc.edu/test.png'); $width = 300; $height = 300; $srcW = imagesx($small); $srcH = imagesy($small); $img = imagecreatetruecolor($width, $height); //Make a transparent canvas $trans = imagecolorresolve($img,255,255,255); imagecolortransparent($img, $trans); imagealphablending($img, false); imagefilledrectangle( $img, 0, 0, $width, $height, $trans); //This shouldn't *need* to be on, but it does imagealphablending($img, true); //One of these works, the other doesn't //imagecopy($img, $small, 0,0, 0,0, $srcW, $srcH); imagecopyresized($img, $small, 0,0, 0,0, $width, $height, $srcW, $srcH); header('Content-Type: image/png'); imagepng($img); ?> Expected result: ---------------- An enlarged, pixellated, mostly transparent, image. Actual result: -------------- A black, opaque, image. ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=39273&edit=1