[PATCH 6/7] d3d11: Allow creating UAVs for structured buffers with NULL description.

[Józef Kucia]

Signed-off-by: Józef Kucia <jkucia at codeweavers.com>
---
 dlls/d3d11/tests/d3d11.c | 25 +++++++++++++++++++++++++
 dlls/d3d11/view.c        | 27 +++++++++++++++++++++++++++
 2 files changed, 52 insertions(+)

diff --git a/dlls/d3d11/tests/d3d11.c b/dlls/d3d11/tests/d3d11.c
index 9a20b8b..2ffad87 100644
--- a/dlls/d3d11/tests/d3d11.c
+++ b/dlls/d3d11/tests/d3d11.c
@@ -9245,6 +9245,9 @@ static void test_create_unordered_access_view(void)
     U(uav_desc).Buffer.NumElements = 64;
     U(uav_desc).Buffer.Flags = 0;
 
+    hr = ID3D11Device_CreateUnorderedAccessView(device, (ID3D11Resource *)buffer, NULL, &uav);
+    ok(hr == E_INVALIDARG, "Got unexpected hr %#x.\n", hr);
+
     expected_refcount = get_refcount((IUnknown *)device) + 1;
     hr = ID3D11Device_CreateUnorderedAccessView(device, (ID3D11Resource *)buffer, &uav_desc, &uav);
     ok(SUCCEEDED(hr), "Failed to create unordered access view, hr %#x.\n", hr);
@@ -9261,6 +9264,28 @@ static void test_create_unordered_access_view(void)
     ID3D11UnorderedAccessView_Release(uav);
     ID3D11Buffer_Release(buffer);
 
+    buffer_desc.MiscFlags = D3D11_RESOURCE_MISC_BUFFER_STRUCTURED;
+    buffer_desc.StructureByteStride = 4;
+
+    hr = ID3D11Device_CreateBuffer(device, &buffer_desc, NULL, &buffer);
+    ok(SUCCEEDED(hr), "Failed to create a buffer, hr %#x.\n", hr);
+
+    hr = ID3D11Device_CreateUnorderedAccessView(device, (ID3D11Resource *)buffer, NULL, &uav);
+    ok(SUCCEEDED(hr), "Got unexpected hr %#x.\n", hr);
+
+    memset(&uav_desc, 0, sizeof(uav_desc));
+    ID3D11UnorderedAccessView_GetDesc(uav, &uav_desc);
+
+    ok(uav_desc.Format == DXGI_FORMAT_UNKNOWN, "Got unexpected format %#x.\n", uav_desc.Format);
+    ok(uav_desc.ViewDimension == D3D11_UAV_DIMENSION_BUFFER, "Got unexpected view dimension %#x.\n",
+            uav_desc.ViewDimension);
+    ok(!U(uav_desc).Buffer.FirstElement, "Got unexpected first element %u.\n", U(uav_desc).Buffer.FirstElement);
+    ok(U(uav_desc).Buffer.NumElements == 256, "Got unexpected num elements %u.\n", U(uav_desc).Buffer.NumElements);
+    ok(!U(uav_desc).Buffer.Flags, "Got unexpected flags %u.\n", U(uav_desc).Buffer.Flags);
+
+    ID3D11UnorderedAccessView_Release(uav);
+    ID3D11Buffer_Release(buffer);
+
     texture2d_desc.Width = 512;
     texture2d_desc.Height = 512;
     texture2d_desc.SampleDesc.Count = 1;
diff --git a/dlls/d3d11/view.c b/dlls/d3d11/view.c
index 5e48965..18ec0a2 100644
--- a/dlls/d3d11/view.c
+++ b/dlls/d3d11/view.c
@@ -710,6 +710,33 @@ static HRESULT set_uav_desc_from_resource(D3D11_UNORDERED_ACCESS_VIEW_DESC *desc
 
     switch (dimension)
     {
+        case D3D11_RESOURCE_DIMENSION_BUFFER:
+        {
+            D3D11_BUFFER_DESC buffer_desc;
+            ID3D11Buffer *buffer;
+
+            if (FAILED(ID3D11Resource_QueryInterface(resource, &IID_ID3D11Buffer, (void **)&buffer)))
+            {
+                ERR("Resource of type BUFFER doesn't implement ID3D11Buffer.\n");
+                return E_INVALIDARG;
+            }
+
+            ID3D11Buffer_GetDesc(buffer, &buffer_desc);
+            ID3D11Buffer_Release(buffer);
+
+            if (buffer_desc.MiscFlags & D3D11_RESOURCE_MISC_BUFFER_STRUCTURED)
+            {
+                desc->Format = DXGI_FORMAT_UNKNOWN;
+                desc->ViewDimension = D3D11_UAV_DIMENSION_BUFFER;
+                desc->u.Buffer.FirstElement = 0;
+                desc->u.Buffer.NumElements = buffer_desc.ByteWidth / buffer_desc.StructureByteStride;
+                desc->u.Buffer.Flags = 0;
+                return S_OK;
+            }
+
+            return E_INVALIDARG;
+        }
+
         case D3D11_RESOURCE_DIMENSION_TEXTURE2D:
         {
             D3D11_TEXTURE2D_DESC texture_desc;
-- 
2.7.3