[Mesa-dev] [PATCH 8/8] i965: Flush pipeline on EndTransformFeedback.

[Eric Anholt]

On Tue, 13 Dec 2011 15:35:21 -0800, Paul Berry <stereotype441 at gmail.com> wrote:
> A common use case for transform feedback is to perform one draw
> operation that writes transform feedback output to a buffer, followed
> by a second draw operation that consumes that buffer as vertex input.
> Since vertex input is consumed at an earlier pipeline stage than
> writing transform feedback output, we need to flush the pipeline to
> ensure that the transform feedback output is completely written before
> the data is consumed.

Reviewed-by: Eric Anholt <eric at anholt.net>
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