Your best bet is to recreate your driver as a KMS driver. This should be relatively straightforward -- lots of helpers exist to cover your use-case. Perhaps the "tiny" drivers are appropriate. Also a quick search reveals this:
https://xilinx-wiki.atlassian.net/wiki/spaces/A/pages/18842520/Xilinx+DRM+KMS+driver which suggests that a driver already exists, although I don't see it upstream. -ilia On Wed, Dec 25, 2019 at 4:04 AM Oleg Gavrilchenko <gavrilche...@avionica.spb.ru> wrote: > > Thank you for answer! I wathed kmscube example. I want to clarify some > things. I have system on ARM(Xilinx ZYNQ). It is not have GPU, there is > only DDR framebuffer, which display through HDMI via FPGA logic. > I wrote for it small fbdev driver. Programs may read/write this > framebuffer through /dev/fb0. That is all. I not write DRM and KMS > support for this device. > I try use OSMesa with this framebuffer, and it work fine. > Should I add support DRM or KMS support on my driver for OpenGL work right? > > On 12/25/19 6:10 AM, Ilia Mirkin wrote: > > Not specific to swrast, but there's a "drm" platform via gbm (or a gbm > > platform with drm output? I'll never remember). You should be able to > > use this to output directly to a kms output. An example of such an > > application is kmscube -- it's more geared to hardware accel, but I > > don't see any reason why it wouldn't work with swrast. See > > https://cgit.freedesktop.org/mesa/kmscube . I don't think there's any > > integration with fbdev, but I also don't see why such an integration > > would be precluded from existing -- however you're better off with > > kms, as that's the supported thing. > > > > On Mon, Dec 23, 2019 at 6:01 AM Oleg Gavrilchenko > > <gavrilche...@avionica.spb.ru> wrote: > >> Hi! Sorry for my English, it is not my first language(Russian). > >> > >> I can ask. How MESA display image in case of use full software > >> rendering? What does interface it use? > >> It use /dev/fbX, drm or otherwise method? > >> > >> _______________________________________________ > >> mesa-dev mailing list > >> mesa-dev@lists.freedesktop.org > >> https://lists.freedesktop.org/mailman/listinfo/mesa-dev > > _______________________________________________ > > mesa-dev mailing list > > mesa-dev@lists.freedesktop.org > > https://lists.freedesktop.org/mailman/listinfo/mesa-dev > > _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-dev
