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

[bugzilla-daemon at freedesktop.org]

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

--- Comment #9 from Ilia Mirkin <imirkin at alum.mit.edu> ---
(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.

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