[weston] linux-dmabuf: align DMABUF exposed formats with EGL supported formats

[Daniel Stone]

Hi Vincent,

On 22 November 2016 at 09:14, Vincent ABRIOU <vincent.abriou at st.com> wrote:
> This was not my understanding of the EGL extension.
> In that case I agree it still make sense.
> I will then propose a new implementation to take into account your comment.

The EGL extension is to advertise all formats which can be natively
imported by the EGL stack, and then bound directly to a sampler. The
YUV cases, where we import as a format like R/RG and then do
colourspace conversion in a user-provided shader, do not meet this
criteria.

Cheers,
Daniel