Module: wine Branch: master Commit: 6f5028337e6f3e1712bafaaa1a0a3bfb983850a3 URL: https://source.winehq.org/git/wine.git/?a=commit;h=6f5028337e6f3e1712bafaaa1... Author: Stefan Dösinger <stefan(a)codeweavers.com> Date: Thu Apr 5 12:59:13 2018 +0200 ddraw: Fix D3DEXECUTEDATA.dwSize handling. Signed-off-by: Stefan Dösinger <stefan(a)codeweavers.com> Signed-off-by: Henri Verbeet <hverbeet(a)codeweavers.com> Signed-off-by: Alexandre Julliard <julliard(a)winehq.org> --- dlls/ddraw/executebuffer.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/dlls/ddraw/executebuffer.c b/dlls/ddraw/executebuffer.c index 497287e..89d9ed3 100644 --- a/dlls/ddraw/executebuffer.c +++ b/dlls/ddraw/executebuffer.c @@ -610,6 +610,12 @@ static HRESULT WINAPI d3d_execute_buffer_SetExecuteData(IDirect3DExecuteBuffer * TRACE("iface %p, data %p.\n", iface, data); + if (data->dwSize != sizeof(*data)) + { + WARN("data->dwSize is %u, returning DDERR_INVALIDPARAMS.\n", data->dwSize); + return DDERR_INVALIDPARAMS; + } + /* Skip past previous vertex data. */ buffer->src_vertex_pos += buffer->data.dwVertexCount; @@ -693,12 +699,11 @@ static HRESULT WINAPI d3d_execute_buffer_SetExecuteData(IDirect3DExecuteBuffer * static HRESULT WINAPI d3d_execute_buffer_GetExecuteData(IDirect3DExecuteBuffer *iface, D3DEXECUTEDATA *data) { struct d3d_execute_buffer *buffer = impl_from_IDirect3DExecuteBuffer(iface); - DWORD dwSize; TRACE("iface %p, data %p.\n", iface, data); - dwSize = data->dwSize; - memcpy(data, &buffer->data, dwSize); + /* Tests show that dwSize is ignored. */ + memcpy(data, &buffer->data, sizeof(*data)); if (TRACE_ON(ddraw)) {