[Bug 89156] r300g: GL_COMPRESSED_RED_RGTC1 / ATI1N support broken

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89156

--- Comment #9 from Stefan Dösinger <stefandoesinger at gmx.at> ---
The reason why I am suspicious about the 3 bits precision and ATI1N is that
according to the GPU register docs TX_FMT_ATI1N is separated from TX_FMT_3_3_2
only by TX_FORMAT2.TXFORMAT_MSB. Is it possible that some code doesn't look at
TXFORMAT_MSB, thinks it sees TX_FMT_3_3_2 and sets up some other part of the
GPU to expect 3 bits of red data?

I'm skimming the code for something like this, so far I haven't found anything.

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