Re: How to fetch the implicit sync fence for a GPU buffer?

2023-06-02 Thread Michel Dänzer
On 6/1/23 23:15, Hoosier, Matt wrote: > Hi, > >   > > In the past there has been writing about Wayland’s model using implicit > synchronization of GPU renderbuffers and KMS commits [1] [2]. > >   > > It would sometimes be nice to do that waiting explicitly in a compositor > before enqueueing

Re: How to fetch the implicit sync fence for a GPU buffer?

2023-06-02 Thread Simon Ser
On Friday, June 2nd, 2023 at 12:29, Michel Dänzer wrote: > > I’m wondering whether there’s an API -- maybe something analogous to > > drmPrimeHandleToFD() – that allows userspace to fetch a waitable fence fd > > for a dmabuf? > > A dma-buf fd itself can serve this purpose; it polls as readable