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output: refactor frame submission API

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This is necessary for direct scan-out and other upcoming features. This patch
changes the output API to look like the wl_surface API.

Outputs now have some double-buffered state: the frame to be submitted
(currently only wlr_renderer frames are supported) and the damaged region.
To attach a pending frame, use wlr_output_attach_render. To set the pending
damaged region, use wlr_output_set_damage.

To submit the pending state, call wlr_output_commit. This will submit the
pending frame to the backend.

To migrate from the old API to the new one:

- Replace wlr_output_make_current calls by wlr_output_attach_render
- Replace wlr_output_swap_buffers calls by wlr_output_set_damage and
  wlr_output_commit
This commit is contained in:
Simon Ser 2019-04-22 12:42:37 +03:00 • committed by Drew DeVault
parent 56ceed38bf
commit 23e37e7b1d
12 changed files with 115 additions and 74 deletions
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4
examples/simple.c
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@ -56,12 +56,12 @@ void output_frame_notify(struct wl_listener *listener, void *data) {
sample->dec = inc;
}
wlr_output_make_current(sample_output->output, NULL);
wlr_output_attach_render(sample_output->output, NULL);
glClearColor(sample->color[0], sample->color[1], sample->color[2], 1.0);
glClear(GL_COLOR_BUFFER_BIT);
wlr_output_swap_buffers(sample_output->output, NULL, NULL);
wlr_output_commit(sample_output->output);
sample->last_frame = now;
}