dshallenberger Posted July 26, 2006 Share Posted July 26, 2006 I'm trying to combine 2 images, based on what the user chooses. There are 4 backgrounds, and 4 characters, and the user can choose which bkg and which character they want. I have a png of each of these 8 graphics. When the user chooses their combo, I have a working script that combines those two images together, but the alpha of the top png isn't coming through. It just put black pixels anywhere there was alpha other than 0 or 100.I ended up just treating it like a transparent gif and selecting a color to be transparent, and it works great, but I'm getting jagged edges, and I would love the soft shadows I can get with an alpha png.Here's my current php script:[code]<?header ("Content-type: image/png"); $background = imagecreatefrompng($_POST['bkg']);$overlay = imagecreatefrompng($_POST['char']);imagecolortransparent($overlay,imagecolorat($overlay,0,0));$insert_x = imagesx($overlay);$insert_y = imagesy($overlay);imagecopymerge($background,$overlay,0,0,0,0,$insert_x,$insert_y,100);imagepng($background);?>[/code]I've seen transparency functions within gd that seem to allow use of the alpha of the png, but I can't get them to work with imagecopymerge. I'm sure it's me doing something wrong, but I don't know what. I hope my explanation above is clear.Anyone here have an idea of how I can accomplish this.Thanks,Dan Link to comment https://forums.phpfreaks.com/topic/15731-gd-transparent-png-question/ Share on other sites More sharing options...
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