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panfrost: Bail out early when new and current FB states are equal

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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.brezillon@collabora.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
This commit is contained in:
Boris Brezillon 2019-08-02 19:18:43 +02:00
parent 17d6ee2bd1
commit 8645afce4c
1 changed files with 4 additions and 0 deletions
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4
src/gallium/drivers/panfrost/pan_context.c
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@ -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);
}