From 120336ede59536e996cb3ca43cd4e0703effeb7f Mon Sep 17 00:00:00 2001
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From: Jeffy Chen <jeffy.chen@rock-chips.com>
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Date: Thu, 28 Oct 2021 12:47:09 +0800
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Subject: [PATCH 51/74] HACK: Use negative value for dynamic repaint window
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Support using negative value for a vblank based dynamic repaint window:
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When negative, repaint-window = vblank-duration - abs(repaint-window)
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Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
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---
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compositor/main.c | 2 +-
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libweston/compositor.c | 9 ++++++++-
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2 files changed, 9 insertions(+), 2 deletions(-)
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diff --git a/compositor/main.c b/compositor/main.c
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index c89598b..3ca4a0a 100644
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--- a/compositor/main.c
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+++ b/compositor/main.c
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@@ -1127,7 +1127,7 @@ weston_compositor_init_config(struct weston_compositor *ec,
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s = weston_config_get_section(config, "core", NULL, NULL);
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weston_config_section_get_int(s, "repaint-window", &repaint_msec,
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ec->repaint_msec);
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- if (repaint_msec < -10 || repaint_msec > 1000) {
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+ if (repaint_msec < -1000 || repaint_msec > 1000) {
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weston_log("Invalid repaint_window value in config: %d\n",
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repaint_msec);
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} else {
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diff --git a/libweston/compositor.c b/libweston/compositor.c
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index af69ab3..02cb51b 100644
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--- a/libweston/compositor.c
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+++ b/libweston/compositor.c
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@@ -3288,10 +3288,17 @@ weston_output_finish_frame(struct weston_output *output,
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output->frame_time = *stamp;
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- timespec_add_nsec(&output->next_repaint, stamp, refresh_nsec);
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+ /* HACK: Use negative value for dynamic repaint window */
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+ if (compositor->repaint_msec > 0)
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+ timespec_add_nsec(&output->next_repaint, stamp, refresh_nsec);
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+
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timespec_add_msec(&output->next_repaint, &output->next_repaint,
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-compositor->repaint_msec);
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msec_rel = timespec_sub_to_msec(&output->next_repaint, &now);
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+ if (msec_rel < 0) {
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+ output->next_repaint = now;
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+ msec_rel = 0;
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+ }
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if (msec_rel < -1000 || msec_rel > 1000) {
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static bool warned;
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--
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2.20.1
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