st/nine: Fix crash NineDevice9_CreateAdditionalSwapChain

When no window is specified, we should revert to the focus window.

This deserves more tests however (what if the device swapchain is
already using the focus window ?)

Fixes crash for FFXIV

Signed-off-by: Axel Davy <axel.davy@ens.fr>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>

diff --git a/src/gallium/state_trackers/nine/device9.c b/src/gallium/state_trackers/nine/device9.c
index e4ac61a..3752c63 100644 (file)
--- a/src/gallium/state_trackers/nine/device9.c
+++ b/src/gallium/state_trackers/nine/device9.c
@@ -711,6 +711,10 @@ NineDevice9_CreateAdditionalSwapChain( struct NineDevice9 *This,
 
     user_assert(pPresentationParameters, D3DERR_INVALIDCALL);
 
+    /* TODO: this deserves more tests */
+    if (!pPresentationParameters->hDeviceWindow)
+        pPresentationParameters->hDeviceWindow = This->params.hFocusWindow;
+
     hr = ID3DPresentGroup_CreateAdditionalPresent(This->present, pPresentationParameters, &present);
 
     if (FAILED(hr))