Special Blender-managed cursor drawing for HMD view

Since OSes only draw one cursor, we need to draw our own cursor for both
eyes.
Note that the interaction coordinates are still incorrect as they ignore
the split screen. Will fix that separately.

1 files changed, 33 insertions, 0 deletions

diff --git a/source/blender/windowmanager/intern/wm_operators.c b/source/blender/windowmanager/intern/wm_operators.c
index 663f59c270c..2ff5c40212b 100644
--- a/source/blender/windowmanager/intern/wm_operators.c
+++ b/source/blender/windowmanager/intern/wm_operators.c
@@ -4203,6 +4203,36 @@ static void WM_OT_hmd_view_toggle(wmOperatorType *ot)
 	ot->invoke = wm_hmd_view_toggle_invoke;
 }
 
+static void hmd_session_cursor_draw(bContext *C, int mx, int my, void *UNUSED(customdata))
+{
+	wmWindowManager *wm = CTX_wm_manager(C);
+	wmWindow *win = CTX_wm_window(C);
+	GLUquadricObj *qobj;
+
+	if (wm->hmd_view.hmd_win != win || !win->screen->is_hmd_running) {
+		/* only hmd window */
+		return;
+	}
+	WM_cursor_modal_set(win, CURSOR_NONE);
+
+	if (mx > (win->sizex / 2)) {
+		mx -= win->sizex / 2;
+	}
+
+	qobj = gluNewQuadric();
+
+	UI_ThemeColor(TH_TEXT_HI);
+
+	glPushMatrix();
+	glTranslatef(mx, my, 0.0f);
+
+	gluQuadricDrawStyle(qobj, GLU_FILL);
+	gluDisk(qobj, 0.0f, 4.0f, 16, 1);
+
+	glPopMatrix();
+	gluDeleteQuadric(qobj);
+}
+
 static int hmd_session_toggle_poll(bContext *C)
 {
 	wmWindowManager *wm = CTX_wm_manager(C);
@@ -4279,6 +4309,7 @@ static int hmd_session_toggle_invoke(bContext *C, wmOperator *UNUSED(op), const
 		WM_window_fullscreen_toggle(hmd_win, false, true);
 		WM_device_HMD_state_set(U.hmd_settings.device, false);
 		hmd_session_disable_viewlocks(wm);
+		WM_cursor_modal_restore(hmd_win);
 	}
 	else {
 		/* start session */
@@ -4289,6 +4320,8 @@ static int hmd_session_toggle_invoke(bContext *C, wmOperator *UNUSED(op), const
 			WM_device_HMD_IPD_set(U.hmd_settings.custom_ipd);
 		}
 		hmd_session_prepare_screen(hmd_win);
+
+		WM_paint_cursor_activate(wm, NULL, hmd_session_cursor_draw, NULL);
 	}
 
 	return OPERATOR_FINISHED;