[Bug 97305] Wrong values returned by GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT & GL_TEXTURE_BUFFER_OFFSET_ALIGNMENT randomly breaks stuff

[bugzilla-dae...@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97305

--- Comment #10 from Marek Olšák <maraeo at gmail.com> ---
(In reply to Ilia Mirkin from comment #9)
> (In reply to Marek Olšák from comment #5)
> > Pre-GCN cards require an alignment of 256 bytes for uniform buffers. GCN
> > cards only require 4 byte alignment there.
> > 
> > All other buffer binding points require 1, 2, or 4 bytes depending on the
> > texel size. It's really min(texel_size, 4).
> 
> That means that you have to return max(texel_size) for the
> GL_TEXTURE_BUFFER_OFFSET_ALIGNMENT. You only get one cap, and a texture
> buffer can be any offset.

That's what we already do.

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