diff --git a/src/d3d8/d3d8_device.cpp b/src/d3d8/d3d8_device.cpp index c3ad13965589..6528b636fce8 100644 --- a/src/d3d8/d3d8_device.cpp +++ b/src/d3d8/d3d8_device.cpp @@ -90,9 +90,21 @@ namespace dxvk { return E_FAIL; case D3DDEVINFOID_VCACHE: - // Docs say response should be S_FALSE, but we'll let D9VK - // decide based on the value of supportVCache. D3DX8 calls this. + // The query will return D3D_OK on Nvidia and D3DERR_NOTAVAILABLE on AMD/Intel + // in D3D9, however in the case of the latter we'll need to return a + // zeroed out query result and S_FALSE. This behavior has been observed both + // on modern native AMD drivers and D3D8-era native ATI drivers. res = GetD3D9()->CreateQuery(d3d9::D3DQUERYTYPE_VCACHE, &pQuery); + + if(FAILED(res)) { + if (DevInfoStructSize != sizeof(D3DDEVINFO_VCACHE)) + return D3DERR_INVALIDCALL; + + D3DDEVINFO_VCACHE vCacheDevInfo = {0}; + memcpy(pDevInfoStruct, &vCacheDevInfo, DevInfoStructSize); + return S_FALSE; + } + break; case D3DDEVINFOID_RESOURCEMANAGER: // May not be implemented by D9VK. diff --git a/src/d3d8/d3d8_device.h b/src/d3d8/d3d8_device.h index 33ea2bbc1889..22035e61a096 100644 --- a/src/d3d8/d3d8_device.h +++ b/src/d3d8/d3d8_device.h @@ -18,6 +18,13 @@ namespace dxvk { + typedef struct D3DDEVINFO_VCACHE { + DWORD Pattern; + DWORD OptMethod; + DWORD CacheSize; + DWORD MagicNumber; + } D3DDEVINFO_VCACHE; + class D3D8Interface; struct D3D8VertexShaderInfo;