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Commit 42624ea8 authored by Nicolai Hähnle's avatar Nicolai Hähnle
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st/mesa: use base level size as "guess" when available

When an applications specifies mip levels _before_ setting a mipmap texture
filter, we will initially guess a single texture level. When the second level
image is created, we try to allocate the full texture -- however, we get the
base level size guess wrong if that size is odd. This leads to yet another
re-allocation of the texture later during st_finalize_texture.

Even worse, this re-allocation breaks a (reasonable) assumption made by
st_generate_mipmaps, because the re-allocation in the finalization call will
again allocate a single-level pipe texture (based on the non-mipmap texture
filter!). As a result, mipmap generation fails in interesting ways.

All of this can be avoided by just using the fact that we already know the
size of the base level.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=95529


Cc: 12.0 <mesa-stable@lists.freedesktop.org>
Reviewed-by: default avatarBrian Paul <brianp@vmware.com>
parent a1e69930
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