Fixed: compositing in IMAGERGB when canvas has a semi-transparent alpha channel and a color with semi transparent alpha are used.

1 files changed, 5 insertions, 4 deletions

diff --git a/html/en/func/color.html b/html/en/func/color.html
index 9ec9928..8efd8a4 100644
--- a/html/en/func/color.html
+++ b/html/en/func/color.html
@@ -52,12 +52,13 @@ cd.DecodeColor(color: lightuserdata) -&gt; (r, g, b: number) [in Lua]</pre>
 
 cd.EncodeAlpha(color: lightuserdata, alpha: number) -&gt; (color: lightuserdata) [in Lua]</pre>
     <p>Returns the given color coded with the alpha information. ATENTION: At the 
-      moment only the Win32 with GDI+ and the IMAGERGB drivers support alpha 
-      components in color coding. Se in <a href="../drv/gdiplus.html">Windows Using 
-        GDI+ Base Driver</a> and <a href="../drv/irgb.html">IMAGERGB driver</a>. The 
+      moment only the <a href="../drv/gdiplus.html">Win32 with GDI+</a>, the
+	<a href="../drv/xrender.html">XRender</a> and the <a href="../drv/irgb.html">IMAGERGB</a> 
+	drivers support alpha components in color coding. The 
       internal representation of the component is inverted, because the default value 
       must be 0 and opaque for backward compatibility, so you should use the <strong>cdDecodeAlpha</strong>
-      function ot the <strong>cdAlpha</strong> macro to retrieve the alpha component.</p>
+      function or the <strong>cdAlpha</strong> macro to retrieve the alpha component. 
+	0 is transparent, 255 is opaque.</p>
     <pre class="function"><span class="mainFunction">unsigned char <a name="cdDecodeAlpha">cdDecodeAlpha</a>(long int color) [in C]</span>
 
 cd.DecodeAlpha(color: lightuserdata) -&gt; (a: number) [in Lua]</pre>