[PATCH vkd3d v2] vkd3d: Do not report a root signature version higher than requested.

[Rémi Bernon]

This fixes Shadow of the Tomb Raider crashing because of NULL root
signatures being passed since c002aee119b638d30eeb7cdc91099449ccafeafc.

Signed-off-by: Rémi Bernon <rbernon(a)codeweavers.com>
---
v2: Add related test cases.

 libs/vkd3d/device.c |  3 ++-
 tests/d3d12.c       | 18 ++++++++++++++++++
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/libs/vkd3d/device.c b/libs/vkd3d/device.c
index d30c447c..30cee112 100644
--- a/libs/vkd3d/device.c
+++ b/libs/vkd3d/device.c
@@ -2512,7 +2512,8 @@ static HRESULT STDMETHODCALLTYPE d3d12_device_CheckFeatureSupport(ID3D12Device *
                 return E_INVALIDARG;
             }

-            data->HighestVersion = D3D_ROOT_SIGNATURE_VERSION_1_1;
+            TRACE("Root signature requested %#x.\n", data->HighestVersion);
+            data->HighestVersion = min(data->HighestVersion, D3D_ROOT_SIGNATURE_VERSION_1_1);

             TRACE("Root signature version %#x.\n", data->HighestVersion);
             return S_OK;
diff --git a/tests/d3d12.c b/tests/d3d12.c
index 9fe47c6c..7bc8baef 100644
--- a/tests/d3d12.c
+++ b/tests/d3d12.c
@@ -1026,6 +1026,7 @@ static void test_check_feature_support(void)
     D3D_FEATURE_LEVEL max_supported_feature_level;
     D3D12_FEATURE_DATA_ARCHITECTURE architecture;
     D3D12_FEATURE_DATA_FORMAT_INFO format_info;
+    D3D12_FEATURE_DATA_ROOT_SIGNATURE root_signature;
     unsigned int expected_plane_count;
     ID3D12Device *device;
     DXGI_FORMAT format;
@@ -1213,6 +1214,23 @@ static void test_check_feature_support(void)
     trace("GPU virtual address bits per process: %u.\n",
             gpu_virtual_address.MaxGPUVirtualAddressBitsPerProcess);

+    root_signature.HighestVersion = D3D_ROOT_SIGNATURE_VERSION_1_0;
+    hr = ID3D12Device_CheckFeatureSupport(device, D3D12_FEATURE_ROOT_SIGNATURE,
+            &root_signature, sizeof(root_signature));
+    ok(hr == S_OK, "Failed to get root signature feature support, hr %#x.\n", hr);
+    ok(root_signature.HighestVersion == D3D_ROOT_SIGNATURE_VERSION_1_0,
+       "Unexpected %d root signature feature version returned.\n",
+       root_signature.HighestVersion);
+
+    root_signature.HighestVersion = D3D_ROOT_SIGNATURE_VERSION_1_1;
+    hr = ID3D12Device_CheckFeatureSupport(device, D3D12_FEATURE_ROOT_SIGNATURE,
+            &root_signature, sizeof(root_signature));
+    ok(hr == S_OK, "Failed to get root signature feature support, hr %#x.\n", hr);
+    ok(root_signature.HighestVersion == D3D_ROOT_SIGNATURE_VERSION_1_0 ||
+       root_signature.HighestVersion == D3D_ROOT_SIGNATURE_VERSION_1_1,
+       "Unexpected %d root signature feature version returned.\n",
+       root_signature.HighestVersion);
+
     refcount = ID3D12Device_Release(device);
     ok(!refcount, "ID3D12Device has %u references left.\n", (unsigned int)refcount);
 }
--
2.24.0.rc0