How Can I Solve OpenGL.error.NullFunctionError?

[RafesiA]

Hi!
First of all, I really apprecitate developers who making Genesis.

What I Ran

I encounted unexpected error when I trying example in documentaion 'Camera Sensor' Basic Usage:

import genesis as gs

gs.init(backend=gs.gpu)
scene = gs.Scene()
scene.add_entity(morph=gs.morphs.Plane())

# Add a camera sensor
camera = scene.add_sensor(
    gs.sensors.RasterizerCameraOptions(
        res=(512, 512),
        pos=(3.0, 0.0, 2.0),
        lookat=(0.0, 0.0, 0.5),
        fov=60.0,
    )
)

scene.build(n_envs=1)
scene.step()

# Read rendered image
data = camera.read()
print(data.rgb.shape)  # (512, 512, 3) for single env

Here's what i got

Log Output

[Genesis] [14:24:41] [INFO] │┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉ Genesis ┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉│
[Genesis] [14:24:41] [INFO] ╰─────────────────────────────────────────────────────────────────────────────────────╯
[Genesis] [14:24:41] [INFO] Running on [NVIDIA GeForce RTX 3070 Ti] with backend gs.cuda. Device memory: 8.00 GB.
[Genesis] [14:24:41] [DEBUG] [GsTaichi] version 4.6.0, llvm 20.1.0, commit 72f02b06, win, python 3.13.11
[Genesis] [14:24:41] [DEBUG] [GsTaichi] Starting on arch=cuda
[Genesis] [14:24:41] [DEBUG] [GsTaichi] Enabling pure kernels for fast cache mode.
[Genesis] [14:24:41] [DEBUG] [GsTaichi] Enabling GsTaichi dynamic array type to avoid scene-specific compilation.
[Genesis] [14:24:41] [INFO] 🚀 Genesis initialized. 🔖 version: 0.3.13, 🎨 theme: dark, 🌱 seed: None, 🐛 debug: False, 📏 precision: 32, 🔥 performance: False, 💬 verbose: DEBUG
[Genesis] [14:24:42] [INFO] Scene <e1da7a0> created.
[Genesis] [14:24:42] [INFO] Adding <gs.RigidEntity>. idx: 0, uid: <03288b7>, morph: <gs.morphs.Plane>, material: <gs.materials.Rigid>.
[Genesis] [14:24:42] [DEBUG] Preprocessed file (`.gsd`) found in cache for geom idx 0.
[Genesis] [14:24:42] [INFO] Building scene <e1da7a0>...
[Genesis] [14:24:42] [DEBUG] Materializing kernel ext_arr_to_ndarray_matrix_c20_0 in AutodiffMode.NONE...
[Genesis] [14:24:42] [DEBUG] Materializing kernel fill_ndarray_c2_0 in AutodiffMode.NONE...
[Genesis] [14:24:42] [DEBUG] Materializing kernel ext_arr_to_ndarray_c18_0 in AutodiffMode.NONE...
[Genesis] [14:24:42] [DEBUG] Materializing kernel ndarray_matrix_to_ext_arr_c10_0 in AutodiffMode.NONE...
[Genesis] [14:24:42] [DEBUG] Materializing kernel kernel_init_vert_fields_c226_0 in AutodiffMode.NONE...
[Genesis] [14:24:42] [DEBUG] Materializing kernel kernel_init_vvert_fields_c228_0 in AutodiffMode.NONE...
[Genesis] [14:24:42] [DEBUG] Constraint solver time constant not specified. Using default value (`0.02`).
[Genesis] [14:24:42] [DEBUG] Materializing kernel kernel_init_geom_fields_c230_0 in AutodiffMode.NONE...
[Genesis] [14:24:42] [DEBUG] Materializing kernel kernel_init_vgeom_fields_c234_0 in AutodiffMode.NONE...
[Genesis] [14:24:42] [DEBUG] Materializing kernel kernel_init_link_fields_c220_0 in AutodiffMode.NONE...
[Genesis] [14:24:43] [DEBUG] Constraint solver time constant not specified. Using default value (`0.02`).
[Genesis] [14:24:43] [DEBUG] Materializing kernel kernel_init_joint_fields_c224_0 in AutodiffMode.NONE...
[Genesis] [14:24:43] [DEBUG] Materializing kernel kernel_init_entity_fields_c236_0 in AutodiffMode.NONE...
[Genesis] [14:24:43] [DEBUG] Materializing kernel sdf_kernel_init_geom_fields_c142_0 in AutodiffMode.NONE...
[Genesis] [14:24:43] [DEBUG] Materializing kernel kernel_update_geoms_c264_0 in AutodiffMode.NONE...
[Genesis] [14:24:43] [DEBUG] Materializing kernel kernel_update_verts_for_geoms_c266_0 in AutodiffMode.NONE...
[Genesis] [14:24:43] [DEBUG] Materializing kernel ext_arr_to_ndarray_c18_1 in AutodiffMode.NONE...
[Genesis] [14:24:43] [DEBUG] Materializing kernel kernel_collider_clear_c152_0 in AutodiffMode.NONE...
[Genesis] [14:24:43] [DEBUG] Materializing kernel ext_arr_to_matrix_c24_0 in AutodiffMode.NONE...
[Genesis] [14:24:43] [DEBUG] Materializing kernel ext_arr_to_matrix_c24_1 in AutodiffMode.NONE...
[Genesis] [14:24:43] [DEBUG] Materializing kernel ext_arr_to_matrix_c24_2 in AutodiffMode.NONE...
[Genesis] [14:24:43] [DEBUG] Materializing kernel ext_arr_to_matrix_c24_3 in AutodiffMode.NONE...
[Genesis] [14:24:43] [DEBUG] Materializing kernel ext_arr_to_matrix_c24_4 in AutodiffMode.NONE...
[Genesis] [14:24:43] [DEBUG] Materializing kernel kernel_update_geoms_render_T_c244_0 in AutodiffMode.NONE...
[Genesis] [14:24:43] [DEBUG] Materializing kernel kernel_update_vgeoms_c272_0 in AutodiffMode.NONE...
[Genesis] [14:24:43] [DEBUG] Materializing kernel kernel_update_vgeoms_render_T_c246_0 in AutodiffMode.NONE...
[Genesis] [14:24:43] [DEBUG] Using offscreen rendering OpenGL device: NVIDIA GeForce RTX 3070 Ti/PCIe/SSE2
[Genesis] [14:24:43] [DEBUG] Materializing kernel kernel_get_state_c292_0 in AutodiffMode.NONE...
[Genesis] [14:24:43] [INFO] Compiling simulation kernels...
[Genesis] [14:24:43] [DEBUG] Materializing kernel kernel_step_1_c382_0 in AutodiffMode.NONE...
[Genesis] [14:24:44] [DEBUG] Materializing kernel add_equality_constraints_c198_0 in AutodiffMode.NONE...
[Genesis] [14:24:44] [DEBUG] Materializing kernel kernel_update_geom_aabbs_c270_0 in AutodiffMode.NONE...
[Genesis] [14:24:44] [DEBUG] Materializing kernel add_inequality_constraints_c200_0 in AutodiffMode.NONE...
[Genesis] [14:24:44] [DEBUG] Materializing kernel func_solve_init_c206_0 in AutodiffMode.NONE...
[Genesis] [14:24:44] [DEBUG] Materializing kernel func_solve_body_c208_0 in AutodiffMode.NONE...
[Genesis] [14:24:44] [DEBUG] Materializing kernel func_update_qacc_c212_0 in AutodiffMode.NONE...
[Genesis] [14:24:44] [DEBUG] Materializing kernel func_update_contact_force_c210_0 in AutodiffMode.NONE...
[Genesis] [14:24:44] [DEBUG] Materializing kernel kernel_step_2_c384_0 in AutodiffMode.NONE...
[Genesis] [14:24:44] [DEBUG] Materializing kernel kernel_set_state_c294_0 in AutodiffMode.NONE...
[Genesis] [14:24:44] [DEBUG] Materializing kernel kernel_forward_kinematics_links_geoms_c254_0 in AutodiffMode.NONE...
[Genesis] [14:24:45] [DEBUG] Materializing kernel constraint_solver_kernel_clear_c196_0 in AutodiffMode.NONE...
[Genesis] [14:24:45] [INFO] Building visualizer...
[Genesis] [14:24:45] [DEBUG] Using offscreen rendering OpenGL device: NVIDIA GeForce RTX 3070 Ti/PCIe/SSE2
[Genesis] [14:24:45] [DEBUG] Materializing kernel kernel_step_1_c382_1 in AutodiffMode.NONE...
C:\Genesis\Genesis\.venv\Lib\site-packages\gstaichi\lang\ast\ast_transformers\call_transformer.py:244: DeprecationWarning: keyword.__init__ got an unexpected keyword argument 'ctx'. Support for arbitrary keyword arguments is deprecated and will be removed in Python 3.15.
  kwarg_node = ast.keyword(
torch.Size([1, 512, 512, 3])
[Genesis] [14:24:46] [INFO] 💤 Exiting Genesis and caching compiled kernels...
Exception ignored in atexit callback <function destroy at 0x000002E817E74180>:
Traceback (most recent call last):
  File "C:\Genesis\Genesis\hello\genesis\__init__.py", line 392, in destroy
    scene.destroy()
  File "C:\Genesis\Genesis\hello\genesis\engine\scene.py", line 307, in destroy
    self._sim.destroy()
  File "C:\Genesis\Genesis\hello\genesis\engine\simulator.py", line 210, in destroy
    self._sensor_manager.destroy()
  File "C:\Genesis\Genesis\hello\genesis\engine\sensors\sensor_manager.py", line 80, in destroy
    sensors_metadata.destroy()
  File "C:\Genesis\Genesis\hello\genesis\engine\sensors\camera.py", line 162, in destroy
    self.renderer.destroy()
  File "C:\Genesis\Genesis\hello\genesis\vis\rasterizer.py", line 158, in destroy
    camera_target.delete()
  File "C:\Genesis\Genesis\hello\genesis\ext\pyrender\renderer.py", line 342, in delete
    self._delete_main_framebuffer()
  File "C:\Genesis\Genesis\hello\genesis\ext\pyrender\renderer.py", line 1024, in _delete_main_framebuffer
    glDeleteFramebuffers(2, [self._main_fb, self._main_fb_ms])
  File "C:\Genesis\Genesis\.venv\Lib\site-packages\OpenGL\latebind.py", line 47, in __call__
    return self._finalCall( *args, **named )
  File "C:\Genesis\Genesis\.venv\Lib\site-packages\OpenGL\wrapper.py", line 788, in wrapperCall
    result = wrappedOperation(*cArguments)
  File "C:\Genesis\Genesis\.venv\Lib\site-packages\OpenGL\platform\baseplatform.py", line 495, in __call__
    raise error.NullFunctionError(
OpenGL.error.NullFunctionError: Attempt to call an undefined function glDeleteFramebuffers, check for bool(glDeleteFramebuffers) before calling

What I did

Checked OpenGL Version (OpenGL 4.6)
Installed PyOpenGL
Installed pyrender

My Envrionment

OS: Windows 11
GPU: RTX 3070 Ti
Python 3.13.11

Hope someone could solve my problem

Is there anything what i missed, please let me know!

[RafesiA]

OK I found fine example examples/sensors/camera_as_sensor.py.

.. And this error does not effect on camera sensor I guess ..