[Mesa-dev] [PATCH 11/11] egl/wayland: Use linux-dmabuf interface for buffers

[Daniel Stone]

Hey Emil,

On 3 July 2017 at 13:36, Emil Velikov <emil.l.velikov at gmail.com> wrote:
> Not familiar with the linux-dmabuf protocol - Dan, any ideas if we can
> "get away" w/o using u_vector?

What would you suggest instead of u_vector?

When the client connects, for each format, it will receive a series of
'modifier' events, advertising one modifier supported for that format.
The number of events which will be received for each format is not
known beforehand. I need to later use these as an array of uint64_t,
one per format, to hand to the driver in
DRIImage->createImageWithModifiers(), so the driver can decide which
modifier to use.

Given that, what would you use instead? My understanding of u_vector
vs. u_dynarray is that u_dynarray should be used for dynamic
grow/shrink, and u_vector pretty much just for append-only. I couldn't
find anything else except open-coding my own malloc() / realloc() /
num_elements / array_length implementation, which seemed worse.

Cheers,
Dan