[PATCH] r3xx-r5xx: fix texturing with small macrotiled pixmaps

[Marek Olšák]

When ColorTiling is enabled, macrotiled small pixmaps cannot be used as
textures because of MACRO_SWITCH. The attached patch fixes that and this
issue is well described in the commit message. Please review.

This also fixes some piglit tests for r300g with ColorTiling enabled, e.g.
glean/readPixSanity and shaders/fp-fog among others. (The
texturing/texredefine test fails due to a flush missing somewhere, but the
driver now passes more tests than without ColorTiling.)

This fix is only for r300. I am not sure whether there is the same issue on
non-r300 GPUs too.

Also can ColorTiling be enabled by default on KMS now?

-Marek
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