wined3d: Let GetRasterStatus return D3D_OK, again.

dlls/wined3d/swapchain.c

@@ -206,19 +206,46 @@ HRESULT CDECL wined3d_swapchain_get_raster_status(const struct wined3d_swapchain
         struct wined3d_raster_status *raster_status)
 {
     static BOOL warned;
+    LARGE_INTEGER counter, freq_per_sec;
+    LONGLONG freq_per_frame, freq_per_line;
+    struct wined3d_display_mode mode;
+
     /* No OpenGL equivalent */
     if (!warned)
     {
-        FIXME("swapchain %p, raster_status %p stub!\n", swapchain, raster_status);
+        FIXME("swapchain %p, raster_status %p semi-stub!\n", swapchain, raster_status);
         warned = TRUE;
     }
 
     /* Obtaining the raster status is a widely implemented but optional
      * feature. When this method returns OK StarCraft 2 expects the
-     * raster_status->InVBlank value to actually change over time. To prevent
-     * StarCraft 2 from running in an infinite loop at startup this method
-     * returns INVALIDCALL. */
-    return WINED3DERR_INVALIDCALL;
+     * raster_status->InVBlank value to actually change over time.
+     * And Endless Alice Crysis doesn't care even if this method fails.
+     * Thus this method returns OK and fakes raster_status by
+     * QueryPerformanceCounter. */
+
+    if (!QueryPerformanceCounter(&counter) || !QueryPerformanceFrequency(&freq_per_sec))
+        return WINED3DERR_INVALIDCALL;
+
+    if (FAILED(wined3d_swapchain_get_display_mode(swapchain, &mode)))
+        return WINED3DERR_INVALIDCALL;
+    if (mode.refresh_rate == DEFAULT_REFRESH_RATE)
+        mode.refresh_rate = 60;
+
+    freq_per_frame = freq_per_sec.QuadPart / mode.refresh_rate;
+    /* Assume 20 scan lines in the vertical blank */
+    freq_per_line = freq_per_frame / (mode.height + 20);
+    raster_status->scan_line = (counter.QuadPart % freq_per_frame) / freq_per_line;
+    if (raster_status->scan_line < mode.height)
+        raster_status->in_vblank = FALSE;
+    else
+    {
+        raster_status->scan_line = 0;
+        raster_status->in_vblank = TRUE;
+    }
+    TRACE("Returning fake value, in_vblank %u, scan_line %u.\n",
+          raster_status->in_vblank, raster_status->scan_line);
+    return WINED3D_OK;
 }
 
 HRESULT CDECL wined3d_swapchain_get_display_mode(const struct wined3d_swapchain *swapchain,