Imagick::setImageMatte

I found this method is needed when creating a font / image mask, and needs to be set to false otherwise the mask won't take effect. Here is an example:<?php// Create objects$image = new Imagick('myImage.png');$watermark = new Imagick();$mask = new Imagick();$draw = new ImagickDraw();// Define dimensions$width = $image->getImageWidth();$height = $image->getImageHeight();// Create some palettes$watermark->newImage($width, $height, new ImagickPixel('grey30'));$mask->newImage($width, $height, new ImagickPixel('black'));// Watermark text$text = 'Copyright';// Set font properties$draw->setFont('Bookman-Demi');$draw->setFontSize(20);$draw->setFillColor('grey70');// Position text$draw->setGravity(Imagick::GRAVITY_SOUTHEAST);// Draw text on the watermark palette$watermark->annotateImage($draw, 10, 12, 0, $text);// Draw text on the mask palette$draw->setFillColor('white');$mask->annotateImage($draw, 11, 13, 0, $text);$mask->annotateImage($draw, 10, 12, 0, $text);$draw->setFillColor('black');$mask->annotateImage($draw, 9, 11, 0, $text);// This is apparently needed for the mask to work$mask->setImageMatte(false);// Apply mask to watermark$watermark->compositeImage($mask, Imagick::COMPOSITE_COPYOPACITY, 0, 0);// Overlay watermark on image$image->compositeImage($watermark, Imagick::COMPOSITE_DISSOLVE, 0, 0);// Set output image format$image->setImageFormat('png');// Output the new imageheader('Content-type: image/png');echo $image;?>