From 489f8fc0a86cd3acab806ec9bc6d72016202f769 Mon Sep 17 00:00:00 2001
From: Evan Hemsley <evan@moonside.games>
Date: Tue, 1 Sep 2026 15:47:10 -0700
Subject: [PATCH] GPU D3D12: Fix depth format sample count support check

---
 src/gpu/d3d12/SDL_gpu_d3d12.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/gpu/d3d12/SDL_gpu_d3d12.c b/src/gpu/d3d12/SDL_gpu_d3d12.c
index 9a263bbe0d..43015c820d 100644
--- a/src/gpu/d3d12/SDL_gpu_d3d12.c
+++ b/src/gpu/d3d12/SDL_gpu_d3d12.c
@@ -8372,6 +8372,13 @@ static bool D3D12_SupportsSampleCount(
     featureData.Flags = (D3D12_MULTISAMPLE_QUALITY_LEVEL_FLAGS)0;
 #endif
     featureData.Format = SDLToD3D12_TextureFormat[format];
+
+    if (IsDepthFormat(format)) {
+        featureData.Format = SDLToD3D12_DepthFormat[format];
+    } else {
+        featureData.Format = SDLToD3D12_TextureFormat[format];
+    }
+
     featureData.SampleCount = SDLToD3D12_SampleCount[sampleCount];
     res = ID3D12Device_CheckFeatureSupport(
         renderer->device,