<p dir="ltr">Bay Trail processors use Intel Gen7 graphics primarily, but hold over the VXD so that all Bay Trail chips can decode HD video even under moderate CPU load.</p>
<p dir="ltr">This is especially important on lower end Bay Trail chips where multitasking may strain the Gen7 GPU such that it can't decode heavily compressed video on its own. On higher end Bay Trail chips it is less necessary in my opinion - but may help when combining HD video with certain OpenGL scenarios. </p>
<p dir="ltr">There are also power benefits (tablets) but I don't have hard numbers there. </p>
<p dir="ltr">AFAIK there is no open source driver for VXD 392. Though I'm sure Imagination will be happy to hear your feedback ;)</p>
<p dir="ltr">Christopher Price<br>
ConsoleOS.com</p>
<div class="gmail_quote">On Jun 23, 2014 11:36 PM, "Jérémy Hervé" <<a href="mailto:jeremy.herve@gmail.com">jeremy.herve@gmail.com</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi,<br>
<br>
In Intel Atom E3800 Product Family Datasheet, ref. 538136, p. 291, is<br>
mentionned VXD 592.<br>
Googling on this term raise a PowerVR IP-Core.<br>
<br>
What this thing used for, in real-life ? (the 538136 explains that it decode<br>
VP8, the Imgtec <a href="http://www.imgtec.com/News/detail.asp?ID=597" target="_blank">http://www.imgtec.com/News/detail.asp?ID=597</a> page talks<br>
about lot of other decoding abilities, but where is it used ?)<br>
<br>
It appears on a Chromium-OS forum, talking about<br>
drivers/staging/vxd392/vxd_drv.c (absent from Linux source tree)<br>
<br>
Thanks,<br>
Jérémy Hervé,<br>
Nantes, France<br>
<br>
<br>
<br>
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