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gallivm: Fix mipfiltering with negative lod bias.
authorJosé Fonseca <jfonseca@vmware.com>
Sat, 8 May 2010 22:16:38 +0000 (23:16 +0100)
committerJosé Fonseca <jfonseca@vmware.com>
Sat, 8 May 2010 22:29:05 +0000 (23:29 +0100)
In particular, don't use the clamped lod to compute level + 1, or
lod in [-1, 0] range will actually interpolate with level 1.

This makes Mipfilter DCT pass 100%.


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