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b5d2cbe027
We have to properly initialize `pxl` before using it. Fix ported from <https://github.com/libgd/libgd/pull/559>.
50 lines
1.2 KiB
PHP
50 lines
1.2 KiB
PHP
--TEST--
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Bug #47946 (ImageConvolution overwrites background)
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--SKIPIF--
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<?php
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if (!extension_loaded('gd')) die('skip gd extension not available');
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if (!GD_BUNDLED && version_compare(GD_VERSION, '2.2.5', '<=')) die('skip upstream fix not yet released');
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?>
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--FILE--
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<?php
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function array_flatten($array)
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{
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$tempArray = array();
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foreach ($array as $value) {
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if (is_array($value)) {
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$tempArray = array_merge($tempArray, array_flatten($value));
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} else {
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$tempArray[] = $value;
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}
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}
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return $tempArray;
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}
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function makeFilter($resource, $matrix, $offset = 1.0)
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{
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$divisor = array_sum(array_flatten($matrix));
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if ($divisor == 0) {
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$divisor = .01;
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}
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return imageconvolution($resource, $matrix, $divisor, $offset);
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}
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$edgeMatrix = array(array(1, 0, 1), array(0, 5, 0), array(1, 0, 1));
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$im = imagecreatetruecolor(40, 40);
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imagealphablending($im, false);
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imagefilledrectangle($im, 0, 0, 39, 39, 0x7fffffff);
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imagefilledellipse($im, 19, 19, 20, 20, 0x00ff00);
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imagesavealpha($im, true);
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makeFilter($im, $edgeMatrix);
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require_once __DIR__ . '/func.inc';
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test_image_equals_file(__DIR__ . '/bug47946_exp.png', $im);
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?>
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===DONE===
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--EXPECT--
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The images are equal.
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===DONE===
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