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renderer-native: Swap then await earlier flips.

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Rendering the next frame (which mostly happens as part of the flush done
in swap buffers) is a task that the GPU can complete independently of
the CPU having to wait for previous page flips. So reverse their order
to get the GPU started earlier, with the aim of greater GPU-CPU
parallelism.
This commit is contained in:
Daniel van Vugt 2018-02-15 15:27:26 +08:00
parent 67917db45f
commit 6e415353e3
1 changed files with 6 additions and 6 deletions
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12
src/backends/native/meta-renderer-native.c
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@ -1854,18 +1854,18 @@ meta_onscreen_native_swap_buffers_with_damage (CoglOnscreen *onscreen,
frame_info = g_queue_peek_tail (&onscreen->pending_frame_infos);
frame_info->global_frame_counter = renderer_native->frame_counter;
/*
* Wait for the flip callback before continuing, as we might have started the
* animation earlier due to the animation being driven by some other monitor.
*/
wait_for_pending_flips (onscreen);
update_secondary_gpu_state_pre_swap_buffers (onscreen);
parent_vtable->onscreen_swap_buffers_with_damage (onscreen,
rectangles,
n_rectangles);
/*
* Wait for the flip callback before continuing, as we might have started the
* animation earlier due to the animation being driven by some other monitor.
*/
wait_for_pending_flips (onscreen);
renderer_gpu_data = meta_renderer_native_get_gpu_data (renderer_native,
render_gpu);
switch (renderer_gpu_data->mode)