antonovsyannikov / pyopengl_examples_savetofile

Several examples of how to use PyOpenGL for off-screen rendering and saving rendered image to file. 3 methods are used: using GLUT hidden window, using WGL to create context with default buffer, as well as creation of OpenGL Framebuffer Object by hands and display results with anti-aliasing in the interactive window .

PyOpenGL_Examples_SaveToFile

Several examples of how to use PyOpenGL for off-screen rendering and saving rendered image to file. 3 methods are used: using GLUT hidden window, using WGL to create context with default buffer, as well as creation of OpenGL Framebuffer Object by hands and display results with anti-aliasing in the interactive window .

Important! PyOpenGL 3.1.1 have a bug!

When you just import WGL, glReadPixels() starts to crash with

ctypes.ArgumentError: argument 7: : wrong type

Go to [package dir]\OpenGL\raw\WGL_types.py , find the following lines

HANDLE = POINTER(None)  # /home/mcfletch/pylive/OpenGL-ctypes/src/wgl.h:60
# TODO: figure out how to make the handle not appear as a void_p within the code...
HANDLE.final = True

replace by

HANDLE = UINT64 # for x64, UINT32 for x86
HANDLE.final = True

=======

OpenGL_Offscreen_FBO.py

Offscreen rendering using manually created OpenGL Framebuffer Object

OpenGL_Offscreen_FBO_standalone.py

Offscreen rendering using manually created OpenGL Framebuffer Object Standalone code - not using LibGL from this repository

OpenGL_Offscreen_GLUT.py

Offscreen rendering using GLUT hidden window

OpenGL_Offscreen_GLUT_standalone.py

Offscreen rendering using GLUT hidden window Standalone code - not using LibGL from this repository

OpenGL_Offscreen_WGL.py

Offscreen rendering using WGL default buffers with hidden window

OpenGL_Offscreen_WGL_standalone.py

Offscreen rendering using WGL default buffers with hidden window Standalone code - not using LibGL from this repository

OpenGL_Window_FBO_AA.py

Render using manually created OpenGL Framebuffer Object Then resize rendered image with anti-aliasing and display it in the window Use mouse to rotate the view

OpenGL_Window_GLUT.py

Simple GLUT-based init and double-buffered OpenGL rendering Use keys to rotate the view

OpenGL_Window_Simple.py

Standard double-buffered OpenGL rendering Using WGL SwapBuffers() to show rendered result in the main window Use mouse to rotate the view

OpenGL_Window_WGL_AA.py

Render using default WGL buffers in the second hidden window Then resize rendered image with anti-aliasing and display it in the window Use mouse to rotate the view

pyopengl_examples_savetofile's Issues

ModuleNotFoundError: No module named 'PFD

hello，An error occurred while running the program，“ModuleNotFoundError: No module named 'PFD'”，what is PFD？How do I install it?
thanks~

OpenGL_Offscreen_GLUT_standalone not working on Linux

Hi,
I am trying the OpenGL_Offscreen_GLUT_standalone.py script on a Linux pc.
However, glutHideWindow() makes the offscreen rendering NOT work for me.
According to this post , rendering to a hidden window has no effects at all w/o a framebufferobject.
Therefore, I am wondering why and how this script works for you?

Cheers,
Changgong

How to use these scripts for linux

I want to do some rendering on Slurm based cluster that run linux. I cannot open a window as there is no x11 server. Can you suggest ways in which I can use your scripts in linux. More specifically alternatives to these packages:

from LibGL.Win32 import *
from LibGL.Context import *
from LibGL.Buffers import *