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From fa10114debafb2058789047704dbe2b21ce8df7e Mon Sep 17 00:00:00 2001
From: Leo Liu <leo.liu@amd.com>
Date: Tue, 19 Mar 2019 13:37:39 -0400
Subject: [PATCH] vl/dri3: remove the wait before getting back buffer
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

The wait here is unnecessary since we got a pool of back buffers,
and the wait for swap buffer will happen before the present pixmap,
at the same time the previous back buffer will be put back to pool
for reuse after the check for PresentIdleNotify event

Signed-off-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
---
 src/gallium/auxiliary/vl/vl_winsys_dri3.c | 18 +++---------------
 1 file changed, 3 insertions(+), 15 deletions(-)

diff --git a/src/gallium/auxiliary/vl/vl_winsys_dri3.c b/src/gallium/auxiliary/vl/vl_winsys_dri3.c
index 152d28e59fc..1558d832555 100644
--- a/src/gallium/auxiliary/vl/vl_winsys_dri3.c
+++ b/src/gallium/auxiliary/vl/vl_winsys_dri3.c
@@ -88,7 +88,6 @@ struct vl_dri3_screen
    uint64_t send_sbc, recv_sbc;
    int64_t last_ust, ns_frame, last_msc, next_msc;
 
-   bool flushed;
    bool is_different_gpu;
 };
 
@@ -570,11 +569,9 @@ vl_dri3_flush_frontbuffer(struct pipe_screen *screen,
    if (!back)
        return;
 
-   if (scrn->flushed) {
-      while (scrn->special_event && scrn->recv_sbc < scrn->send_sbc)
-         if (!dri3_wait_present_events(scrn))
-            return;
-   }
+   while (scrn->special_event && scrn->recv_sbc < scrn->send_sbc)
+      if (!dri3_wait_present_events(scrn))
+         return;
 
    rectangle.x = 0;
    rectangle.y = 0;
@@ -610,8 +607,6 @@ vl_dri3_flush_frontbuffer(struct pipe_screen *screen,
 
    xcb_flush(scrn->conn);
 
-   scrn->flushed = true;
-
    return;
 }
 
@@ -626,13 +621,6 @@ vl_dri3_screen_texture_from_drawable(struct vl_screen *vscreen, void *drawable)
    if (!dri3_set_drawable(scrn, (Drawable)drawable))
       return NULL;
 
-   if (scrn->flushed) {
-      while (scrn->special_event && scrn->recv_sbc < scrn->send_sbc)
-         if (!dri3_wait_present_events(scrn))
-            return NULL;
-   }
-   scrn->flushed = false;
-
    buffer = (scrn->is_pixmap) ?
             dri3_get_front_buffer(scrn) :
             dri3_get_back_buffer(scrn);
-- 
2.17.1