#30229 [Opn->Ver]: (imagerectangle + alpha level > 0) = color bug

ID: 30229 Updated by: pajoye@php.net Reported By: a25617 at alunos dot det dot ua dot pt -Status: Open +Status: Verified Bug Type: GD related Operating System: Windows XP PHP Version: Irrelevant -Assigned To: +Assigned To: pajoye New Comment: Got the fix, will commit asap. --Pierre Previous Comments: ------------------------------------------------------------------------ [2004-09-25 15:21:46] a25617 at alunos dot det dot ua dot pt Description: ------------ When using a transparency level above zero, drawing a rectangle will produce 4 dots in the corners. I think this is because the 4 lines of the rectangle are drawn and the corners will be overridden 2 times making the color on the corners darker than the rest. Reproduce code: --------------- <?php $im = imagecreatetruecolor(100, 100); $bg = imagecolorallocate($im, 250, 250, 250); $blue = imagecolorallocatealpha($im, 150, 150, 255, 60); imagefilledrectangle($im, 0, 0, 100, 100, $bg); imagerectangle($im, 20, 20, 80, 80, $blue); imagepng($im); imagedestroy($im); ?> Expected result: ---------------- And grayed backgrounded image 100x100 with a blue rectangle 60x60 in the middle. Actual result: -------------- Everything is ok except the corners of the rectangle are darker. In some complex examples like drawing gantt or bar charts that bug stands out even more. ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=30229&edit=1