On 10/06/2015 10:56 PM, Grazvydas Ignotas wrote:
Hi,
For the general problem of slow X, we might be able to still use fbturbo on top of omapdrm's fb emulation. That was working at last year's gamescom, on TI's old 3.8 kernel.
I've done a bit of research on using glamor, and there's not a lot of info out there. Apart from a mention of "GLES2 port on PVR545 platform" on the glamor site, there weren't any details on what and how they were using it.
I did find a bit of info on using it on the rpi, where they seem to run it on top of xserver-xorg-video-modesetting (Driver "modesetting" in the xorg.conf), so I decided to give that a try. Glamor doesn't seem to work out of the box with the version in debian, but using the modesetting driver alone turned out to be a lot more usable then the omap one, without massive lag when dragging a window.
I've done a bit of benchmarking using the last few tests of x11perf ( x11perf -comppixwin500 -getimagexy500 -shmgetxy500 -shmputxy500 -putimagexy500 -deepcopyplane500 -copyplane500 -copypixpix500 -scroll500 )
Probably not that useful, but it does give a slightly more objective indication of the speed of the various drivers.
omap/modeset/turbo running on the 4.2 hns drm kernel, turbo4.3 on the normal 4.3-rc4
results are ops/sec 500x500 omap modeset turbo turbo4.3 Scroll 182.0 186.0 4110.0 4190.0 Copy Pixmap 115.0 4670.0 5020.0 4970.0 Copy 1bit 420.0 758.0 768.0 806.0 Copy nbit 30.9 310.0 257.0 260.0 PutImage 1.0 1.0 22.2 22.4 ShmPutImage 1.0 21.6 21.1 20.7 ShmGetImage 1.3 1.3 21.4 21.5 GetImage 1.3 1.3 19.9 20.3 Composite 165.0 1540.0 2060.0 2070.0