From 9826e04eca69d04b64258d26983410bd2470f607 Mon Sep 17 00:00:00 2001 From: Daniel Stone Date: Tue, 30 Oct 2018 12:56:53 +0000 Subject: [PATCH] vulkan/wsi/wayland: Respect non-blocking AcquireNextImage If the client has requested that AcquireNextImage not block at all, with a timeout of 0, then don't make any non-blocking calls. This will still potentially block infinitely given a non-infinte timeout, but the fix for that is much more involved. Signed-off-by: Daniel Stone Cc: mesa-stable@lists.freedesktop.org Cc: Chad Versace Cc: Jason Ekstrand Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=108540 Acked-by: Jason Ekstrand Reviewed-by: Chad Versace Reviewed-by: Eric Engestrom --- src/vulkan/wsi/wsi_common_wayland.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/src/vulkan/wsi/wsi_common_wayland.c b/src/vulkan/wsi/wsi_common_wayland.c index ad65384..cf978ea 100644 --- a/src/vulkan/wsi/wsi_common_wayland.c +++ b/src/vulkan/wsi/wsi_common_wayland.c @@ -774,9 +774,14 @@ wsi_wl_swapchain_acquire_next_image(struct wsi_swapchain *wsi_chain, } } - /* This time we do a blocking dispatch because we can't go - * anywhere until we get an event. + /* We now have to do a blocking dispatch, because all our images + * are in use and we cannot return one until the server does. However, + * if the client has requested non-blocking ANI, then we tell it up front + * that we have nothing to return. */ + if (info->timeout == 0) + return VK_NOT_READY; + int ret = wl_display_roundtrip_queue(chain->display->wl_display, chain->display->queue); if (ret < 0) -- 2.7.4