[Bug 91509] Depth render buffer corruption

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91509

--- Comment #4 from Roland Scheidegger <sroland at vmware.com> ---
As a quick hunch based on your observations and some quick look in the code, it
seems depth buffers need to be 128 byte aligned on r200 (and 64 byte on r100
though that's just based on the tile/untile code), but
radeon_alloc_renderbuffer_storage() only does it to 64 bytes: (pitch = ((cpp *
width + 63) & ~63) / cpp;)
Could you try out if increasing that to 128 byte alignment there would help?
For the heck of it I can't figure out though from where the window
depth/colorbuffers get their alignment, so I've no idea how that's calculated
there...
Not sure right now on color buffers neither...

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