[Mesa-dev] [PATCH] radeonsi: Synchronize a streamout write after read hazard.

[Marek Olšák]

Reviewed-by: Marek Olšák <marek.olsak at amd.com>

Marek

On Mon, Apr 11, 2016 at 4:04 PM, Bas Nieuwenhuizen
<bas at basnieuwenhuizen.nl> wrote:
> Signed-off-by: Bas Nieuwenhuizen <bas at basnieuwenhuizen.nl>
> ---
>  src/gallium/drivers/radeonsi/si_descriptors.c | 6 ++++++
>  1 file changed, 6 insertions(+)
>
> diff --git a/src/gallium/drivers/radeonsi/si_descriptors.c b/src/gallium/drivers/radeonsi/si_descriptors.c
> index cf898fd..a2c096f 100644
> --- a/src/gallium/drivers/radeonsi/si_descriptors.c
> +++ b/src/gallium/drivers/radeonsi/si_descriptors.c
> @@ -936,6 +936,12 @@ static void si_set_streamout_targets(struct pipe_context *ctx,
>                                  SI_CONTEXT_VS_PARTIAL_FLUSH;
>         }
>
> +       /* All readers of the streamout targets need to be finished before we can
> +        * start writing to the targets.
> +        */
> +       if (num_targets)
> +               sctx->b.flags |= SI_CONTEXT_PS_PARTIAL_FLUSH;
> +
>         /* Streamout buffers must be bound in 2 places:
>          * 1) in VGT by setting the VGT_STRMOUT registers
>          * 2) as shader resources
> --
> 2.8.0
>
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