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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.6 $ -->
<!-- splitted from ./en/functions/image.xml, last change in rev 1.36 -->
<refentry id="function.imagealphablending">
<refnamediv>
<refname>imagealphablending</refname>
<refpurpose>Set the blending mode for an image</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<methodsynopsis>
<type>bool</type><methodname>imagealphablending</methodname>
<methodparam><type>resource</type><parameter>image</parameter></methodparam>
<methodparam><type>bool</type><parameter>blendmode</parameter></methodparam>
</methodsynopsis>
<para>
<function>imagealphablending</function> allows for two different
modes of drawing on truecolor images. In blending mode, the
alpha channel component of the color supplied to all drawing function,
such as <function>imagesetpixel</function> determines how much of the
underlying color should be allowed to shine through. As a result, gd
automatically blends the existing color at that point with the drawing color,
and stores the result in the image. The resulting pixel is opaque. In
non-blending mode, the drawing color is copied literally with its alpha channel
information, replacing the destination pixel. Blending mode is not available
when drawing on palette images.
If <parameter>blendmode</parameter> is &true;, then blending mode is enabled, otherwise
disabled.
&return.success;
</para>
¬e.gd.2;
</refsect1>
</refentry>
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