Since we were just discussing this in IRC,
Reviewed-by: Chris Forbes <chr...@ijw.co.nz>
On Mon, Aug 4, 2014 at 6:54 PM, Kenneth Graunke <kenn...@whitecape.org> wrote:
> We have a CPU-side implementation of conditional rendering; it really
> should be done on the GPU. It's not necessarily that hard, but nobody
> has gotten to fixing it yet.
>
> Signed-off-by: Kenneth Graunke <kenn...@whitecape.org>
> ---
> src/mesa/drivers/dri/i965/brw_draw.c | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/src/mesa/drivers/dri/i965/brw_draw.c
> b/src/mesa/drivers/dri/i965/brw_draw.c
> index 4dae7d3..412c360 100644
> --- a/src/mesa/drivers/dri/i965/brw_draw.c
> +++ b/src/mesa/drivers/dri/i965/brw_draw.c
> @@ -539,6 +539,11 @@ void brw_draw_prims( struct gl_context *ctx,
>
> assert(unused_tfb_object == NULL);
>
> + if (ctx->Query.CondRenderQuery) {
> + perf_debug("Conditional rendering is implemented in software and may "
> + "stall. This should be fixed in the driver.\n");
> + }
> +
> if (!_mesa_check_conditional_render(ctx))
> return;
>
> --
> 2.0.2
>
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