R-b
On Fri, Aug 02, 2019 at 12:12:52PM +0200, Boris Brezillon wrote:
> If the current FB matches the new one there's nothing to be done in
> panfrost_set_framebuffer_state(). By bailing out early in that case we
> avoid emitting new FB descriptors (the old ones are still valid).
>
> Signed-off-by: Boris Brezillon <boris.brezil...@collabora.com>
> ---
> src/gallium/drivers/panfrost/pan_context.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/src/gallium/drivers/panfrost/pan_context.c
> b/src/gallium/drivers/panfrost/pan_context.c
> index b63023a16cda..d442ae1f2433 100644
> --- a/src/gallium/drivers/panfrost/pan_context.c
> +++ b/src/gallium/drivers/panfrost/pan_context.c
> @@ -2365,6 +2365,10 @@ panfrost_set_framebuffer_state(struct pipe_context
> *pctx,
> bool is_scanout = panfrost_is_scanout(ctx);
> bool has_draws = job->last_job.gpu;
>
> + /* Bail out early when the current and new states are the same. */
> + if (util_framebuffer_state_equal(&ctx->pipe_framebuffer, fb))
> + return;
> +
> if (!ctx->wallpaper_batch && (!is_scanout || has_draws)) {
> panfrost_flush(pctx, NULL, PIPE_FLUSH_END_OF_FRAME);
> }
> --
> 2.21.0
>
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