[Mesa-dev] [PATCH 02/11] i965: Add missing BRW_NEW_BATCH dirty bit to Gen6+ clip state atoms.

[Eric Anholt]

On Sun,  8 Jan 2012 14:43:51 -0800, Kenneth Graunke <kenneth at whitecape.org> wrote:
> Without MI_SET_CONTEXT, there's no guarantee that another program hasn't
> reprogram the GPU's clip state since our last batch.  We need to submit
> it every time.
> 
> Found by inspection.

BRW_NEW_CONTEXT is the flag for "we might have lost our context because
everything got reprogrammed."

BRW_NEW_BATCH is the flag for "we have to program it again with a new
batch for other reasons (e.g. relocations ensuring that your buffer is
present).

The intent was that when we get MI_SET_CONTEXT, we just stop flagging
BRW_NEW_CONTEXT per batch.
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