From 30dfc8e0aca9c02f37c0d5c609021db51a3223a6 Mon Sep 17 00:00:00 2001
From: Yuxuan Shui <yshuiv7@gmail.com>
Date: Wed, 22 Apr 2020 20:20:22 +0100
Subject: [PATCH] driver: enable xrender-sync-fence on NVIDIA driver

Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
---
 src/backend/driver.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/backend/driver.c b/src/backend/driver.c
index e3b263a8..34406bfc 100644
--- a/src/backend/driver.c
+++ b/src/backend/driver.c
@@ -16,6 +16,7 @@
 void apply_driver_workarounds(struct session *ps, enum driver driver) {
 	if (driver & DRIVER_NVIDIA) {
 		setenv("__GL_YIELD", "usleep", true);
+		ps->o.xrender_sync_fence = true;
 	}
 }