Core XR Support [part 4]: Blender-side changes (+ the remaining bits)

Changes for the higher level, more Blender specific side of the implementation.

Main additions:
* WM-XR: Layer tying Ghost-XR to the Blender specific APIs/data
* wmSurface API: drawable, non-window container (manages Ghost-OpenGL and GPU context)
* DNA/RNA for initial management of VR session settings
* Utility batch & config file for using the Oculus runtime (Windows only)

Differential Revision: https://developer.blender.org/D6193

1 files changed, 36 insertions, 0 deletions

diff --git a/source/blender/windowmanager/intern/wm_operators.c b/source/blender/windowmanager/intern/wm_operators.c
index 6bafbed9804..1e6455da9c9 100644
--- a/source/blender/windowmanager/intern/wm_operators.c
+++ b/source/blender/windowmanager/intern/wm_operators.c
@@ -3470,6 +3470,39 @@ static void WM_OT_stereo3d_set(wmOperatorType *ot)
 
 /** \} */
 
+#ifdef WITH_OPENXR
+static int wm_xr_session_toggle_exec(bContext *C, wmOperator *UNUSED(op))
+{
+  wmWindowManager *wm = CTX_wm_manager(C);
+
+  /* Lazy-create xr context - tries to dynlink to the runtime, reading active_runtime.json. */
+  if (wm_xr_context_ensure(C, wm) == false) {
+    return OPERATOR_CANCELLED;
+  }
+
+  wm_xr_session_toggle(C, wm->xr.context);
+
+  return OPERATOR_FINISHED;
+}
+
+static void WM_OT_xr_session_toggle(wmOperatorType *ot)
+{
+  /* identifiers */
+  ot->name = "Toggle VR Session";
+  ot->idname = "WM_OT_xr_session_toggle";
+  ot->description =
+      "Attempt to open a view for use with virtual reality headsets, or close it if already "
+      "opened";
+
+  /* callbacks */
+  ot->exec = wm_xr_session_toggle_exec;
+
+  /* XXX INTERNAL just to hide it from the search menu by default, an Add-on will expose it in the
+   * UI instead. Not meant as a permanent solution. */
+  ot->flag = OPTYPE_INTERNAL;
+}
+#endif /* WITH_OPENXR */
+
 /* -------------------------------------------------------------------- */
 /** \name Operator Registration & Keymaps
  * \{ */
@@ -3511,6 +3544,9 @@ void wm_operatortypes_register(void)
   WM_operatortype_append(WM_OT_call_panel);
   WM_operatortype_append(WM_OT_radial_control);
   WM_operatortype_append(WM_OT_stereo3d_set);
+#ifdef WITH_OPENXR
+  WM_operatortype_append(WM_OT_xr_session_toggle);
+#endif
 #if defined(WIN32)
   WM_operatortype_append(WM_OT_console_toggle);
 #endif