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backend/drm: export pending FB in export_dmabuf, if any

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This allows callers to grab the current frame right after committing it,
without having to incur a full vblank worth of latency.
This commit is contained in:
Simon Ser 2020-11-04 14:02:15 +01:00
parent 2934a72920
commit 1328477a82
1 changed files with 6 additions and 4 deletions
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10
backend/drm/drm.c
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@ -639,13 +639,15 @@ static bool drm_connector_export_dmabuf(struct wlr_output *output,
return false; return false;
} }
struct wlr_drm_plane *plane = crtc->primary; struct wlr_drm_fb *fb = &crtc->primary->queued_fb;
if (fb->type == WLR_DRM_FB_TYPE_NONE) {
if (plane->current_fb.type == WLR_DRM_FB_TYPE_NONE) { fb = &crtc->primary->current_fb;
}
if (fb->type == WLR_DRM_FB_TYPE_NONE) {
return false; return false;
} }
return export_drm_bo(plane->current_fb.bo, attribs); return export_drm_bo(fb->bo, attribs);
} }
struct wlr_drm_fb *plane_get_next_fb(struct wlr_drm_plane *plane) { struct wlr_drm_fb *plane_get_next_fb(struct wlr_drm_plane *plane) {