Add AlwaysOnTop toggle, allowing single display mode

README.md

@@ -51,7 +51,7 @@ Windows-only solution currently, but there are other solutions on Linux like Mon
 
 ## Base Installation
 
-- Get a multi-display configuration setup (see notes)
+- A multi-display configuration setup (see notes) will be the most compatible, but single displays can be used. Some mods or games may not work with a single display
 - Install SteamVR
 - Download the [latest release](https://github.com/oneup03/VRto3D/releases/latest) and copy the `vrto3d` folder to your `Steam\steamapps\common\SteamVR\drivers` folder
 - Edit the `Steam\steamapps\common\SteamVR\drivers\vrto3d\resources\settings\default.vrsettings` as needed
@@ -60,8 +60,16 @@ Windows-only solution currently, but there are other solutions on Linux like Mon
 - Run SteamVR at least once to verify that you see a Headset window. This is usually not needed before running games.
 	- The Headset window must be on your primary 3D display
 - Try launching a VR game
-- Drag everything besides the headset view to your second display
-- Make the game's window in focus on your second display for control input to work
+- Multi-Display setups:
+	- Drag everything besides the headset view to your second display
+	- Make the headset window in focus on your primary display
+	- Make the game's window in focus on your second display for control input to work
+- Single Display setup:
+	- Make the headset window in focus on your display
+	- Press `Ctrl+F8` to toggle locking the headset window to the foreground
+	- Use `Alt+Tab` to switch to the game window
+	- If the headset window went completely black, this game isn't compatible in single display mode
+	- To quit, `Alt+Tab` to the SteamVR Status window and close it with `Alt+F4`
 - Adjust Depth with `Ctrl+F3` and `Ctrl+F4`
 - Adjust Convergence with `Ctrl+F5` and `Ctrl+F6`
 - Save all Depth & Convergence settings with `Ctrl+F7`
@@ -98,6 +106,7 @@ Windows-only solution currently, but there are other solutions on Linux like Mon
 	- Having 3DVision enabled will crash DX12 games
 	- Make sure your game runs on old drivers with 3D disabled before attempting to get it working with VRto3D
 	- If you get a black screen while trying to run SteamVR + 3DVision, you may have to hard reset
+	- Only Multi-Display setups will work due to 3DVision needing to always be fullscreen to activate
 - Complete the Base Installation section
 - If you want full resolution per eye, enable DSR 4x in Nvidia Control Panel -> Manage 3D Settings
 - Modify the `window_width` and `window_height` in `Steam\steamapps\common\SteamVR\drivers\vrto3d\resources\settings\default.vrsettings` to match your fullscreen resolution

vrto3d/src/hmd_device_driver.cpp

@@ -425,9 +425,25 @@ vr::DriverPose_t MockControllerDeviceDriver::GetPose()
 void MockControllerDeviceDriver::PoseUpdateThread()
 {
 	static int sleep_time = (int)(floor(1000.0 / stereo_display_component_->GetConfig().display_frequency));
-	static int sleep_counter = 0;
+	static int height_sleep = 0;
+	static int top_sleep = 0;
+	static bool always_on_top = false;
+	static HWND vr_window;
+	static HWND top_window;
+
 	while ( is_active_ )
 	{
+		// Keep VR display always on top for 3D rendering
+		if (always_on_top) {
+			top_window = GetTopWindow(GetDesktopWindow());
+			if (vr_window != NULL && vr_window != top_window) {
+				SetWindowPos(vr_window, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE);
+			}
+			else {
+				vr_window = FindWindow(NULL, L"Headset Window");
+			}
+		}
+
 		// Inform the vrserver that our tracked device's pose has updated, giving it the pose returned by our GetPose().
 		vr::VRServerDriverHost()->TrackedDevicePoseUpdated( device_index_, GetPose(), sizeof( vr::DriverPose_t ) );
 
@@ -451,13 +467,21 @@ void MockControllerDeviceDriver::PoseUpdateThread()
 		if ((GetAsyncKeyState(VK_CONTROL) & 0x8000) && (GetAsyncKeyState(VK_F7) & 0x8000)) {
 			SaveDepthConv();
 		}
+		// Ctrl+F8 Toggle Always On Top
+		if ((GetAsyncKeyState(VK_CONTROL) & 0x8000) && (GetAsyncKeyState(VK_F8) & 0x8000) && top_sleep == 0) {
+			top_sleep = stereo_display_component_->GetConfig().sleep_count_max;
+			always_on_top = !always_on_top;
+		}
+		else if (top_sleep > 0) {
+			top_sleep--;
+		}
 		// Ctrl+F9 Toggle HMD height
-		if ((GetAsyncKeyState(VK_CONTROL) & 0x8000) && (GetAsyncKeyState(VK_F9) & 0x8000) && sleep_counter == 0) {
-			sleep_counter = stereo_display_component_->GetConfig().sleep_count_max;
+		if ((GetAsyncKeyState(VK_CONTROL) & 0x8000) && (GetAsyncKeyState(VK_F9) & 0x8000) && height_sleep == 0) {
+			height_sleep = stereo_display_component_->GetConfig().sleep_count_max;
 			stereo_display_component_->SetHeight();
 		}
-		else if (sleep_counter > 0) {
-			sleep_counter--;
+		else if (height_sleep > 0) {
+			height_sleep--;
 		}
 
 		// Check User binds