> Question 1: is the cpu encoding the rendered buffer a bottleneck?
When using VGL_COMPRESS=jpeg it does use
a lot more cpu, hence a bottleneck. My feeling is jpeg compress is only
useful when the data is actually going thru network.
You could also use VGL_PROFILE to find out a bit more.
> Question 2: is it possible to do encoding on the GPU?
Possibly. I haven't looked at VirtualGL's code. But you can if
you use YUV transport, one could in theory use a shader to
encode/decoder YUV.
> Question 3: Is the intel card decoding using hardware?
I tried using VGL_COMPRESS=xv, and I assume on the intel card
it would be using XV (hence hardware) to decode and display the image.
It seems to give pretty good performance too. Though I personally mind a
little myself when using yuv or xv since the color is washed out a
little due to the nature of the format.
I also did notice when I use vglclient -gl, it does give a
lower cpu usage comparing without -gl.
Pigeon.
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