[Bug 76919] Random junk at the bottom of non-multiple-of-4 compressed textures (original or mipmapped)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=76919

--- Comment #1 from Tapani Pälli <lemody at gmail.com> ---
I don't know details of the problem here but I got interested and went to read
the spec ..

EXT_texture_compression_s3tc specification states in "Implementation Note":

"If the width or height is not a multiple of four, there will be 4x4 blocks at
the edge of the image that contain "extra" texels that are not part of the
image."

I'm not sure though what should happen if one samples/reads such texel.

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