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Abort scanout_update_pending event when possible

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We don't need to wait for a non-TearFree scanout update before scanning
out from the screen pixmap or before flipping, as the scanout update
won't be visible anyway. Instead, just abort it.

(Ported from amdgpu commit 36d01989cd842588f12fdae5b2cba5fdcf9c91dd)
Acked-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Michel Dänzer
2018-07-10 18:45:51 +02:00
committed by Michel Dänzer
parent 290291a115
commit 05390ae36a
1 changed files with 8 additions and 4 deletions
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12
src/drmmode_display.c
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@@ -986,8 +986,8 @@ done:
if (drmmode_crtc->scanout[scanout_id].pixmap &&
fb != radeon_pixmap_get_fb(drmmode_crtc->
scanout[scanout_id].pixmap)) {
drmmode_crtc_wait_pending_event(drmmode_crtc, pRADEONEnt->fd,
drmmode_crtc->scanout_update_pending);
radeon_drm_abort_entry(drmmode_crtc->scanout_update_pending);
drmmode_crtc->scanout_update_pending = 0;
drmmode_crtc_scanout_free(drmmode_crtc);
} else if (!drmmode_crtc->tear_free) {
drmmode_crtc_scanout_destroy(drmmode,
@@ -3190,8 +3190,12 @@ Bool radeon_do_pageflip(ScrnInfoPtr scrn, ClientPtr client,
extents);
radeon_cs_flush_indirect(crtc->scrn);
drmmode_crtc_wait_pending_event(drmmode_crtc, pRADEONEnt->fd,
drmmode_crtc->scanout_update_pending);
if (drmmode_crtc->scanout_update_pending) {
drmmode_crtc_wait_pending_event(drmmode_crtc, pRADEONEnt->fd,
drmmode_crtc->flip_pending);
radeon_drm_abort_entry(drmmode_crtc->scanout_update_pending);
drmmode_crtc->scanout_update_pending = 0;
}
}
if (crtc == ref_crtc) {