3d rendering Issue:

[ramayanbindas]

Intent: We are trying only to display 3d objects with their default parameters
Output: But it only showing a black screen after execution.

System: Linux operating system: Fedora Linux 39 (Workstation Edition), browser: Firefox version 120

from vpython import *
from sys import exit

def menu():
    print('1. Curve')
    print('2. Sphere')
    print('3. Cone')
    print('4. Arrow')
    print('5. Rings')
    print('6. Cylinder')

ch = "y"
while ch != "n":
    scene = canvas()
    menu()

    choice = int(input('Enter choice: '))
    if choice == 1:
        curve()
    elif choice == 2:
        sphere()
    elif choice == 3:
        cone()
    elif choice == 4:
        arrow()
    elif choice == 5:
        ring()
    elif choice == 6:
        cylinder()
    else:
        print('Invalid choice')

    ch = input('Do you want to continue (y/n)? ').lower()
    scene.delete()

exit()

Tried to resolve this issue: By passing some parameters, by redrawing the screen, updating the screen etc.

[BruceSherwood]

What Python are you using? From the installation instructions at vpython.org: The vpython module currently works with Python versions 3.8, 3.9, and 3.10. (We are working on a release for 3.11)

[ramayanbindas]

Python version: 10

…

On Wed, 21 Feb 2024, 10:36 pm BruceSherwood, ***@***.***> wrote: What Python are you using? From the installation instructions at vpython.org: The vpython module currently works with Python versions 3.8, 3.9, and 3.10. (We are working on a release for 3.11) — Reply to this email directly, view it on GitHub <#182 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ARMMQS7CLF7ZH6LPHLFAQZLYUYSQRAVCNFSM6AAAAABDTCNQAKVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMYTSNJXGMZDQOBRG4> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[BruceSherwood]

Try running this Web VPython program: tinyurl.com/vporbit. If it fails, it could be that WebGL2 is not available in your browser. Go to https://get.webgl.org/
You should see a rotating wire frame box.
Next, go to https://browserleaks.com/webgl
and report whether both WebGL and WebGL2 are checked True.

[nd-thang]

I also have the same problem, I have some smartphone devices, on the device with WebGL_Unmasked_Renderer value as Mali-..., it does not display block, spheres, text,... but only displays the trajectory (see attached video https://files.catbox.moe/qyluvx.mp4), it works normally on the devices with WebGL_Unmasked_Renderer: ANGLE

[nd-thang]

@BruceSherwood could you help to check my above comment?

[BruceSherwood]

I know nothing about the issues you mention. I'll mention that you might run https://get.webgl.org/webgl2/ to see whether your device does or doesn't support WebGL2 in the browser; VPython uses WebGL2.

[nd-thang]

@BruceSherwood My phone has WebGL2 supported, there is some kind of graphics type can not be rendered like text, box, sphere,... Its happens on both Chrome, Firefox. I have some other devices which also happens are has WebGL_Unmasked_Renderer: Mali-xyz

AtomicSolid-VPython

Bounce-VPython

BillboardingText

[BruceSherwood]

Sorry, but I am unable to debug the problems you have encountered. I've never heard of anyone else seeing the problems you see.