[Nouveau] [PATCH] nvfx: restore BEGIN_RING usage

[Xavier Chantry]

On Mon, Dec 20, 2010 at 10:46 PM, Michel Hermier
<michel.hermier at gmail.com> wrote:
> Just for my personnal information, how did you benchmarked ? By juging the fps ?
>

These 3 games have built-in benchmark/demo system so I just used it.

20 dec : no patch
840 frames 6.6 seconds 126.4 fps 3.0/7.9/60.0/2.7 ms
931 frames 15.2444695 seconds 61.0713283 fps, one-second fps
min/avg/max: 34 71 135 (44 seconds)
9.655401 / 29.729643 / 113.846779 fps -- Score = 29.773331
rand[1490382222]

20 dec : begin ring patch
840 frames 6.7 seconds 126.2 fps 4.0/7.9/59.0/2.7 ms
931 frames 15.4498180 seconds 60.2596096 fps, one-second fps
min/avg/max: 33 70 133 (44 seconds)
9.668166 / 29.757431 / 117.643478 fps -- Score = 29.799963
rand[1490382222]

I usually see a variation of 0.5 - 1 fps between consecutive runs.

I don't know if nvfx is more performant on nv40 / pci express, so
anyone with the hardware is also welcome to test.

> If you have the binaries could you also comparbinary size (for
> reference/culture)
>

I cannot see a difference, but I don't usually look at binary size so
feel free to check.