Request for sponsered development...

[Christian Weiß]

Petr,

to a certain extent, yes, VirtualGL is doing that.

However, VirtualGL is using VNC as the transport medium but I'd like to have a tighter integration with the Xorg architecture, otherwise Windows are bound the the VNC client space. Moreover, compression/decompression is handled by the CPU and I'd have this handled by the GPU (application and client side). But it's a good start and I've already contacted those folks.

In order to get all this closer into Xorg, here's what I have in mind: for rendering I'd like to use a TESLA board with an render pipeline written OpenCL or CUDA. Within a post-processing step the frame buffer (which is actually an off-screen buffer in OpenCL's global space) is compressed and picked-up by a GLX driver in user space. From what I read, AIGLX has the means transferring pixmap images directly to an GLX extension (GLX_pixmaptotexture or something) within the graphics driver. I'd use AIGLX to pass the image directly through to the (DRI) driver an let a pixel shader decompress the image. This way it goes effectively to the frame buffer of the clients X-server. 

Since AIGLX is a Fedora project, I hope that anyone here is able to provide me with further technical information about the protocol and the architecture - haven't found anything so far. As mentioned, whatever comes out of this I'll gladly contribute to the project.

Christian.

-----Original Message-----
From: devel-bounces at lists.fedoraproject.org [mailto:devel-bounces at lists.fedoraproject.org] On Behalf Of Petr Pisar
Sent: Dienstag, 08. März 2011 09:58
To: devel at lists.fedoraproject.org
Subject: Re: Request for sponsered development...

On 2011-03-06, Christian Weiß <christian.weisz at spoc.at> wrote:
> Consider an installation of about ~600 low budget thin-clients (with
> almost no 3D support from the graphics chip) running as X-Terminals.
> Those thin-client stations are serviced by a host computer for 25-30
> stations each. This infrastructure should be the basis of an
> architectural/interior planning system with serious demands in terms
> of 3D rendering. It's all clear that the client hardware will not be
> able to provide the power, so it comes down to a server-based
> rendering approach. Therefore some of ATI's or Nvidia's latest boards
> should be attached to the host computers forming a CUDA cluster for
> their terminals. So, the question is: how to get the image to the
> client? 

This is already addressed by VirtualGL project
<http://www.virtualgl.org/>.

-- Petr

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