[d3d8] Fix D3D8BatchBuffer::GetDesc

src/d3d8/d3d8_batch.h

@@ -27,15 +27,15 @@ namespace dxvk {
         UINT                                Length,
         DWORD                               FVF)
       : D3D8VertexBuffer(pDevice, nullptr, Pool, Usage)
-      , m_data(Length) {
+      , m_data(Length)
+      , m_fvf(FVF) {
     }
 
     HRESULT STDMETHODCALLTYPE Lock(
             UINT   OffsetToLock,
             UINT   SizeToLock,
             BYTE** ppbData,
             DWORD  Flags) {
-
       *ppbData = m_data.data() + OffsetToLock;
       return D3D_OK;
     }
@@ -44,6 +44,16 @@ namespace dxvk {
       return D3D_OK;
     }
 
+    HRESULT STDMETHODCALLTYPE GetDesc(D3DVERTEXBUFFER_DESC* pDesc) {
+      pDesc->Format = D3DFMT_VERTEXDATA;
+      pDesc->Type   = D3DRTYPE_VERTEXBUFFER;
+      pDesc->Usage  = m_usage;
+      pDesc->Pool   = m_pool;
+      pDesc->Size   = m_data.size();
+      pDesc->FVF    = m_fvf;
+      return D3D_OK;
+    }
+
     void STDMETHODCALLTYPE PreLoad() {
     }
 
@@ -57,6 +67,7 @@ namespace dxvk {
 
   private:
     std::vector<BYTE> m_data;
+    DWORD             m_fvf;
   };
 
   /**

src/d3d8/d3d8_buffer.h

@@ -63,7 +63,7 @@ namespace dxvk {
 
     D3DRESOURCETYPE STDMETHODCALLTYPE GetType() final { return D3DRTYPE_VERTEXBUFFER; }
 
-    HRESULT STDMETHODCALLTYPE GetDesc(D3DVERTEXBUFFER_DESC* pDesc) final {
+    HRESULT STDMETHODCALLTYPE GetDesc(D3DVERTEXBUFFER_DESC* pDesc) {
       HRESULT hr = GetD3D9()->GetDesc(reinterpret_cast<d3d9::D3DVERTEXBUFFER_DESC*>(pDesc));
       if (!FAILED(hr)) {
         pDesc->Pool = m_pool;