From 31a43b93900e9305b293b711452bfb1b5a4a177d Mon Sep 17 00:00:00 2001
From: sonninnos <tony@pihaus.org>
Date: Sun, 12 Jun 2022 10:56:43 +0300
Subject: [PATCH] (D3D11/12) Reduce lag with WaitForVBlank

---
 gfx/drivers/d3d11.c | 8 ++++++++
 gfx/drivers/d3d12.c | 7 +++++++
 2 files changed, 15 insertions(+)

diff --git a/gfx/drivers/d3d11.c b/gfx/drivers/d3d11.c
index 1747ba26d8..522a94d9f2 100644
--- a/gfx/drivers/d3d11.c
+++ b/gfx/drivers/d3d11.c
@@ -2374,6 +2374,14 @@ static bool d3d11_gfx_frame(
 #endif
 
    DXGIPresent(d3d11->swapChain, d3d11->swap_interval, present_flags);
+
+   if (vsync)
+   {
+      IDXGIOutput *pOutput;
+      DXGIGetContainingOutput(d3d11->swapChain, &pOutput);
+      DXGIWaitForVBlank(pOutput);
+   }
+
    Release(rtv);
 
    return true;
diff --git a/gfx/drivers/d3d12.c b/gfx/drivers/d3d12.c
index e5cb894e7a..7c202dec87 100644
--- a/gfx/drivers/d3d12.c
+++ b/gfx/drivers/d3d12.c
@@ -2660,6 +2660,13 @@ static bool d3d12_gfx_frame(
 #endif
    DXGIPresent(d3d12->chain.handle, sync_interval, present_flags);
 
+   if (vsync)
+   {
+      IDXGIOutput *pOutput;
+      DXGIGetContainingOutput(d3d12->chain.handle, &pOutput);
+      DXGIWaitForVBlank(pOutput);
+   }
+
    return true;
 }