import sys sys.path.insert(0, '.') import xr_examples import xr_examples.hello_xr xr_examples.hello_xr Out[6]: from xr_examples.hello_xr.main import main main() 03/11/25 07:56:31.772 main INFO: Press any key to shutdown... 03/11/25 07:56:32.376 openxr_program INFO: Available Layers: (2) 03/11/25 07:56:32.390 openxr_program INFO: Instance RuntimeName=Acer XR Runtime RuntimeVersion=1.2.1001 03/11/25 07:56:32.391 openxr_program INFO: Available View Configuration Types: (1) 03/11/25 07:56:32.392 openxr_program INFO: Available Environment Blend Mode count : (1) 03/11/25 07:56:32.392 openxr_program INFO: Environment Blend Mode (1) : (Selected) 03/11/25 07:56:32.578 openxr_program INFO: Available reference spaces: 3 03/11/25 07:56:32.579 openxr_program INFO: System Properties: Name=SpatialLabs Display Driver VendorId=1282 03/11/25 07:56:32.580 openxr_program INFO: System Graphics Properties: MaxWidth=1920 MaxHeight=1080 MaxLayers=16 03/11/25 07:56:32.580 openxr_program INFO: System Tracking Properties: OrientationTracking=True PositionTracking=True 03/11/25 07:56:32.581 openxr_program INFO: Creating swapchain for view 0 with dimensions Width=1920 Height=1080 SampleCount=1 03/11/25 07:56:32.584 openxr_program INFO: Creating swapchain for view 1 with dimensions Width=1920 Height=1080 SampleCount=1 03/11/25 07:56:32.588 openxr_program INFO: XrEventDataSessionStateChanged: state 0->1 session=0x3000003 time=659513800 03/11/25 07:56:32.588 openxr_program INFO: XrEventDataSessionStateChanged: state 1->2 session=0x3000003 time=697457200 03/11/25 07:56:32.602 openxr_program INFO: XrEventDataSessionStateChanged: state 2->3 session=0x3000003 time=791657100 03/11/25 07:56:32.602 openxr_program INFO: XrEventDataSessionStateChanged: state 3->4 session=0x3000003 time=791660100 03/11/25 07:56:32.603 openxr_program INFO: XrEventDataSessionStateChanged: state 4->5 session=0x3000003 time=791660600 --------------------------------------------------------------------------- AssertionError Traceback (most recent call last) Cell In[8], line 1 ----> 1 main() File C:\cygwin64\home\goddard\ucsf\pyopenxr_examples\xr_examples\hello_xr\main.py:98, in main() 95 except xr.exception.SessionNotFocused: 96 # TODO: C++ code does not need this conditional. Why does python? 97 pass ---> 98 program.render_frame() 99 else: 100 # Throttle loop since xrWaitFrame won't be called. 101 time.sleep(0.250) File C:\cygwin64\home\goddard\ucsf\pyopenxr_examples\xr_examples\hello_xr\openxr_program.py:759, in OpenXRProgram.render_frame(self) 755 projection_layer_views = (xr.CompositionLayerProjectionView * 2)( 756 xr.CompositionLayerProjectionView(), 757 xr.CompositionLayerProjectionView()) 758 if frame_state.should_render: --> 759 if self.render_layer(frame_state.predicted_display_time, projection_layer_views, layer): 760 layers.append(byref(layer)) 762 xr.end_frame( 763 session=self.session, 764 frame_end_info=xr.FrameEndInfo( (...) 768 ), 769 ) File C:\cygwin64\home\goddard\ucsf\pyopenxr_examples\xr_examples\hello_xr\openxr_program.py:792, in OpenXRProgram.render_layer(self, predicted_display_time, projection_layer_views, layer) 790 return False # There are no valid tracking poses for the views. 791 assert view_count_output == view_capacity_input --> 792 assert view_count_output == len(self.config_views) 793 assert view_count_output == len(self.swapchains) 794 assert view_count_output == len(projection_layer_views) AssertionError: 03/11/25 07:56:45.321 ipkernel INFO: Exception in execute request: --------------------------------------------------------------------------- AssertionError Traceback (most recent call last) Cell In[8], line 1 ----> 1 main() File C:\cygwin64\home\goddard\ucsf\pyopenxr_examples\xr_examples\hello_xr\main.py:98, in main() 95 except xr.exception.SessionNotFocused: 96 # TODO: C++ code does not need this conditional. Why does python? 97 pass ---> 98 program.render_frame() 99 else: 100 # Throttle loop since xrWaitFrame won't be called. 101 time.sleep(0.250) File C:\cygwin64\home\goddard\ucsf\pyopenxr_examples\xr_examples\hello_xr\openxr_program.py:759, in OpenXRProgram.render_frame(self) 755 projection_layer_views = (xr.CompositionLayerProjectionView * 2)( 756 xr.CompositionLayerProjectionView(), 757 xr.CompositionLayerProjectionView()) 758 if frame_state.should_render: --> 759 if self.render_layer(frame_state.predicted_display_time, projection_layer_views, layer): 760 layers.append(byref(layer)) 762 xr.end_frame( 763 session=self.session, 764 frame_end_info=xr.FrameEndInfo( (...) 768 ), 769 ) File C:\cygwin64\home\goddard\ucsf\pyopenxr_examples\xr_examples\hello_xr\openxr_program.py:792, in OpenXRProgram.render_layer(self, predicted_display_time, projection_layer_views, layer) 790 return False # There are no valid tracking poses for the views. 791 assert view_count_output == view_capacity_input --> 792 assert view_count_output == len(self.config_views) 793 assert view_count_output == len(self.swapchains) 794 assert view_count_output == len(projection_layer_views) AssertionError: