From 8682ec207eca12fc4a6787f06bb3397ee4a9bfe5 Mon Sep 17 00:00:00 2001
From: Geoffrey McRae <geoff@hostfission.com>
Date: Wed, 4 May 2022 10:23:42 +1000
Subject: [PATCH] [host] dxgi: check for invalid usage of d3d12 & downsampling

---
 host/platform/Windows/capture/DXGI/src/d3d12.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/host/platform/Windows/capture/DXGI/src/d3d12.c b/host/platform/Windows/capture/DXGI/src/d3d12.c
index 83adcb0e..54d5ffcd 100644
--- a/host/platform/Windows/capture/DXGI/src/d3d12.c
+++ b/host/platform/Windows/capture/DXGI/src/d3d12.c
@@ -91,6 +91,14 @@ static bool d3d12_create(struct DXGIInterface * intf)
   if (!d3d12)
     return false;
 
+  if (dxgi->downsampleLevel > 0)
+  {
+    DEBUG_WARN("The D3D12 backend does not support downsampling yet");
+    dxgi->downsampleLevel = 0;
+    dxgi->targetWidth     = dxgi->width;
+    dxgi->targetHeight    = dxgi->height;
+  }
+
   if (dxgi->debug)
   {
     D3D12GetDebugInterface_t D3D12GetDebugInterface = (D3D12GetDebugInterface_t)