On Fri, Oct 16, 2015 at 12:09:52AM +0100, Emil Velikov wrote: > Hi Christian, > > I'm glad to see Thierry's work revived. Hopefully this will soon be > the basis of many more drivers. > > On 11 October 2015 at 16:09, Christian Gmeiner > <christian.gmei...@gmail.com> wrote: > > This commit adds a generic renderonly driver library, which fullfille > > the requirements for tegra and etnaviv. As a result it is possible to > > run unmodified egl software directly (without any compositor) on > > supported devices. > > > > In every use case we import a dumb buffer from scanout gpu into > > the renderonly gpu. > > > > If the scanout hardware does support the used tiling format from the > > renderonly gpu, a driver can define a function which is used to 'setup' > > the needed tiling on that imported buffer. This functions gets called > > during rendertarget resource creation. > > > > If the scanout hardware does not support the used tiling format we need > > to create an extra rendertarget resource for the renderonly gpu. > > During XXX we blit the renderonly rendertarget onto the imported dumb > > buffer. > > > I'd assume you meant to add something over the XXX here :-P > > But seriously some people might not be too happy with the blit onto > dumb buffer. Personally I ok, esp. since we don't have anything better > atm. > > That aside, there are a few minor nitpicks below. With those sorted I > believe the patch is good to land.
I'd prefer if at least the Tegra part wasn't merged just yet. We know that it only works in a restricted set of use-cases. So until we figure it out all the way I don't think it makes sense to have this code in Mesa yet. I suppose the renderonly part could go in, though I do have some reservations about the architecture. I'll try to comment on that in a separate email because this subthread lacks some of the necessary context. Thierry
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