1--TEST-- 2Bug #47946 (ImageConvolution overwrites background) 3--DESCRIPTION-- 4The expected image has black pixel artifacts, what is another issue, though 5(perhaps #40158). 6--SKIPIF-- 7<?php 8if (!extension_loaded('gd')) die('skip gd extension not available'); 9?> 10--FILE-- 11<?php 12function array_flatten($array) 13{ 14 $tempArray = array(); 15 16 foreach ($array as $value) { 17 if (is_array($value)) { 18 $tempArray = array_merge($tempArray, array_flatten($value)); 19 } else { 20 $tempArray[] = $value; 21 } 22 } 23 24 return $tempArray; 25} 26 27function makeFilter($resource, $matrix, $offset = 1.0) 28{ 29 $divisor = array_sum(array_flatten($matrix)); 30 if ($divisor == 0) { 31 $divisor = .01; 32 } 33 return imageconvolution($resource, $matrix, $divisor, $offset); 34} 35 36$edgeMatrix = array(array(1, 0, 1), array(0, 5, 0), array(1, 0, 1)); 37 38$im = imagecreatetruecolor(40, 40); 39imagealphablending($im, false); 40imagefilledrectangle($im, 0, 0, 39, 39, 0x7fffffff); 41imagefilledellipse($im, 19, 19, 20, 20, 0x00ff00); 42imagesavealpha($im, true); 43makeFilter($im, $edgeMatrix); 44 45require_once __DIR__ . '/func.inc'; 46test_image_equals_file(__DIR__ . '/bug47946_exp.png', $im); 47?> 48===DONE=== 49--EXPECT-- 50The images are equal. 51===DONE=== 52
