2016-03-05 3:53 GMT+08:00 Rob Clark <[email protected]>: > On Fri, Mar 4, 2016 at 2:43 PM, Thomas Hellstrom <[email protected]> > wrote: >> On 03/04/2016 07:07 PM, Rob Clark wrote: >>> On Fri, Mar 4, 2016 at 12:59 PM, Rob Clark <[email protected]> wrote: >>>> So, I've been advocating that for android, gallium drivers use >>>> gralloc_drm_pipe, since with android it seems like you end up with >>>> both gralloc and libGL in the same process, and having both share the >>>> same pipe_screen avoids lots of headaches with multiple gem handles >>>> pointing to same underlying buffer. >>>> >>>> But the awkward thing is that gralloc_drm_pipe is using gallium APIs >>>> that aren't particularly intended to be used out-of-tree. Ie. not >>>> really stable APIs. At the time, the thing that made sense to me was >>>> to pull drm_gralloc into mesa. But at the time, there were no >>>> non-mesa users of drm_gralloc, which isn't really true anymore. >>>> >>>> Maybe what makes more sense now is to implement a gralloc state >>>> tracker, which exposes a stable API for drm_gralloc? It would mostly >>>> be a shim to expose gallium import/export/transfer APIs in a stable >>>> way, but would also be where the code that figures out which driver to >>>> use to create/get the pipe_screen. >>> and actually, we might just be able to use XA state tracker for this.. >>> I think it exposes all the necessary import/export/etc stuff that >>> gralloc would need.. >>> >>> BR, >>> -R >>> >> and it was created for a very similar purpose, except that we also >> needed some >> render functionality, enough to composite surfaces. > > right, and since we have the ability to import/export dmabuf handles, > I think it is a superset of what is needed. (gralloc is using blits > instead of flips for vmwgfx, for reasons I don't fully understand.. > but XA can do these blits and more, so we are still good there)
Hi Rob, Thank you for raising the problem though I don't fully understand the technical details. So you are planning to modify (or re-implement?) gralloc_drm_pipe to use the APIs of XA state tracker. Do I understand your words correctly? -- Chih-Wei Android-x86 project http://www.android-x86.org _______________________________________________ mesa-dev mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/mesa-dev
