[Bug 21561] UMS: Audio curves display corrupted in Audacity with radeon and EXA on RV670

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=21561

Dave Airlie <airlied at freedesktop.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Audio curves display        |UMS: Audio curves display
                   |corrupted in Audacity with  |corrupted in Audacity with
                   |radeon and EXA on RV670     |radeon and EXA on RV670

--- Comment #40 from Dave Airlie <airlied at freedesktop.org> 2010-04-15 23:29:23 PDT ---
Just to add my analysis to this for posterity.

This is a UMS bug only, it could happen with KMS, its just extremely unlikely.

When we emit the solid vertices in KMS, we don't have to flush the whole
indirect buffer when we run out of VBO space, we just create a new VBO and
continue from there, adding a new VBO to the current IB involves writing
7+7+5+11+10 = 40 dwords to the IB. We currently leave a buffer of 1024 dwords
in the command stream, so that is quite a lot of VBOs.

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