Re: [Mesa-dev] Difference between TransformFeedback Gallium <-> Vulkan (V3D)

2019-08-26 Thread Marek Olšák
On Mon, Aug 26, 2019 at 6:51 PM Jason Ekstrand wrote: > On Mon, Aug 26, 2019 at 6:43 AM Daniel Stone wrote: > >> Hi Andreas, >> >> On Sun, 25 Aug 2019 at 21:11, Andreas Bergmeier >> wrote: >> > For a few weeks now I am working on implementing Vulkan for VideoCore 6 >> AKA 42 (using V3D/DRM). Do

Re: [Mesa-dev] Difference between TransformFeedback Gallium <-> Vulkan (V3D)

2019-08-26 Thread Dave Airlie
On Tue, 27 Aug 2019 at 09:03, Andreas Bergmeier wrote: > > > Be warned that the way the Intel streamout hardware works is really weird. > > It's designed from the perspective of something walking a buffer and trying > > to figure out which outputs to grab. This is completely backwards (or > >

Re: [Mesa-dev] Difference between TransformFeedback Gallium <-> Vulkan (V3D)

2019-08-26 Thread Andreas Bergmeier
> Be warned that the way the Intel streamout hardware works is really weird. It's designed from the perspective of something walking a buffer and trying to figure out which outputs to grab. This is completely backwards (or inside-out, whichever is weirder) from the API which is written from the p

Re: [Mesa-dev] Difference between TransformFeedback Gallium <-> Vulkan (V3D)

2019-08-26 Thread Jason Ekstrand
On Mon, Aug 26, 2019 at 6:43 AM Daniel Stone wrote: > Hi Andreas, > > On Sun, 25 Aug 2019 at 21:11, Andreas Bergmeier > wrote: > > For a few weeks now I am working on implementing Vulkan for VideoCore 6 > AKA 42 (using V3D/DRM). Don't hold you breath ;) > > Great! I can't say much about the spec

Re: [Mesa-dev] Difference between TransformFeedback Gallium <-> Vulkan (V3D)

2019-08-26 Thread Daniel Stone
Hi Andreas, On Sun, 25 Aug 2019 at 21:11, Andreas Bergmeier wrote: > For a few weeks now I am working on implementing Vulkan for VideoCore 6 AKA > 42 (using V3D/DRM). Don't hold you breath ;) Great! I can't say much about the specifics of VideoCore hardware, but at least for some of the common

[Mesa-dev] Difference between TransformFeedback Gallium <-> Vulkan (V3D)

2019-08-25 Thread Andreas Bergmeier
For a few weeks now I am working on implementing Vulkan for VideoCore 6 AKA 42 (using V3D/DRM). Don't hold you breath ;) Currently I am trying to understand what is necessary or how to interact with V3D. So I am looking at TransformFeedback because it interacts with quite a few other parts of the