[igt-dev] Non-dumb framebuffer tests

[Daniel Vetter]

On Fri, Jan 18, 2019 at 09:07:48AM +0000, Simon Ser wrote:
> Hi,
> 
> I've been wondering about tests with non-dumb framebuffers. From what I've
> understood, the create_bo_for_fb helper will use dumb framebuffers unless
> the format is tiling or a specific size/stride is requested or it's YUV.

Hm, maybe we need dumb_create2, like we have addfb2?

> This makes it so that some framebuffer type/usage combinations are not
> tested, especially for simple RGBA formats. For instance, cursor tests
> seem to always use dumb framebuffers.
> 
> Would it be useful to add GEM (or GBM?) framebuffer tests?

Yeah. I think longer-term we might want to have plug-in library for
allocating buffers on the various gpus, if things get too extreme. Pulling
in something like gbm is probably too much (and wont solve anything for
display-only drivers).

This also gets into areas where kms isn't all the well-specified, so
definitely good to have better tests for it.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch