From 976d9ef43c6eb431a1963a2e5857c100eeacd952 Mon Sep 17 00:00:00 2001
From: Fernando Sahmkow <fsahmkow27@gmail.com>
Date: Thu, 26 Sep 2019 08:46:22 -0400
Subject: NvFlinger: Don't swap buffers if a frame is missing and always
 trigger event in sync gpu.

---
 src/core/hle/service/nvflinger/nvflinger.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/core/hle/service/nvflinger/nvflinger.cpp b/src/core/hle/service/nvflinger/nvflinger.cpp
index 86a90526c..3c08ac9a3 100644
--- a/src/core/hle/service/nvflinger/nvflinger.cpp
+++ b/src/core/hle/service/nvflinger/nvflinger.cpp
@@ -203,7 +203,9 @@ void NVFlinger::Compose() {
 
         if (!buffer) {
             // There was no queued buffer to draw, render previous frame
-            system.GPU().SwapBuffers({});
+            auto& gpu = system.GPU();
+            // Always trigger on sync GPU.
+            trigger_event = !gpu.IsAsync();
             continue;
         }
 
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