st/nine: Handle Window Occlusion

Apps can know if the window is occluded by checking for
specific error messages. The behaviour is different
for Device9 and Device9Ex.

This allow games to release the mouse and stop rendering
until the focus is restored.

In case of multiple swapchain we do care only of the device one.

Signed-off-by: Patrick Rudolph <[email protected]>
Reviewed-by: Axel Davy <[email protected]>

1 files changed, 23 insertions, 0 deletions

diff --git a/src/gallium/state_trackers/nine/swapchain9.c b/src/gallium/state_trackers/nine/swapchain9.c
index c8d3ca15890..5d05f1f4697 100644
--- a/src/gallium/state_trackers/nine/swapchain9.c
+++ b/src/gallium/state_trackers/nine/swapchain9.c
@@ -787,6 +787,19 @@ NineSwapChain9_Present( struct NineSwapChain9 *This,
     if (hr == D3DERR_WASSTILLDRAWING)
         return hr;
 
+    if (This->base.device->ex) {
+        if (NineSwapChain9_GetOccluded(This)) {
+            return S_PRESENT_OCCLUDED;
+        }
+    } else {
+        if (NineSwapChain9_GetOccluded(This)) {
+            This->base.device->device_needs_reset = TRUE;
+        }
+        if (This->base.device->device_needs_reset) {
+            return D3DERR_DEVICELOST;
+        }
+    }
+
     switch (This->params.SwapEffect) {
         case D3DSWAPEFFECT_FLIP:
             UNTESTED(4);
@@ -992,3 +1005,13 @@ NineSwapChain9_new( struct NineDevice9 *pDevice,
                           implicit, pPresent, pPresentationParameters,
                           pCTX, hFocusWindow, NULL);
 }
+
+BOOL
+NineSwapChain9_GetOccluded( struct NineSwapChain9 *This )
+{
+    if (This->base.device->minor_version_num > 0) {
+        return ID3DPresent_GetWindowOccluded(This->present);
+    }
+
+    return FALSE;
+}