1--TEST-- 2Bug #47946 (ImageConvolution overwrites background) 3--EXTENSIONS-- 4gd 5--SKIPIF-- 6<?php 7if (!GD_BUNDLED && version_compare(GD_VERSION, '2.2.5', '<=')) die('skip upstream fix not yet released'); 8?> 9--FILE-- 10<?php 11function array_flatten($array) 12{ 13 $tempArray = array(); 14 15 foreach ($array as $value) { 16 if (is_array($value)) { 17 $tempArray = array_merge($tempArray, array_flatten($value)); 18 } else { 19 $tempArray[] = $value; 20 } 21 } 22 23 return $tempArray; 24} 25 26function makeFilter($resource, $matrix, $offset = 1.0) 27{ 28 $divisor = array_sum(array_flatten($matrix)); 29 if ($divisor == 0) { 30 $divisor = .01; 31 } 32 return imageconvolution($resource, $matrix, $divisor, $offset); 33} 34 35$edgeMatrix = array(array(1, 0, 1), array(0, 5, 0), array(1, 0, 1)); 36 37$im = imagecreatetruecolor(40, 40); 38imagealphablending($im, false); 39imagefilledrectangle($im, 0, 0, 39, 39, 0x7fffffff); 40imagefilledellipse($im, 19, 19, 20, 20, 0x00ff00); 41imagesavealpha($im, true); 42makeFilter($im, $edgeMatrix); 43 44require_once __DIR__ . '/func.inc'; 45test_image_equals_file(__DIR__ . '/bug47946_exp.png', $im); 46?> 47--EXPECT-- 48The images are equal. 49
