Questions tagged [python-moderngl]
46 questions
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vote
1 answer
How to create surface from 3-D numpy array in Pyopengl?
I have created a 3-d numpy array consisting of X, Y, and Z axis coordinates. Now I am trying to create a surface using these points in opengl but all I have got success is in creating wire model something like this below . Can anyone suggest changes…
AKS
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1
vote
1 answer
PyQt5 choose the latest OpenGL version available
I write an application in PyQt5. I want to use the latest OpenGL version available. I want some backward compatibility as well.
Currently I have:
fmt = QtOpenGL.QGLFormat()
fmt.setVersion(3, 3)
fmt.setProfile(QtOpenGL.QGLFormat.CoreProfile)
However…
Szabolcs Dombi
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0
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Python moderngl and PIL with big image (14000x9600) only loads red channel
I am trying to load big .png files (~10-16 MB, 14000x9600) with PIL. When I load them into a texture I can only use one color channel (I try 3 or 4 and it tells me it doesn't match in size).
The part handling this is:
from PIL import Image`
img =…
Senfguerkli
- 3
- 1
0
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How do i fix a datasize mismatch error in moderngl
I have been working on a pixel-style game using pygame, and wanted to add a crt filter using glsl filters. Now, the code is set up, but doesn't work. Everytime i run it, it throws a datasize mismatch error like this:
File…
PizzerLover123
- 39
- 3
0
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1 answer
Moderngl: Render VAO with multiple shaders
I'm doing some stuff with 2D opengl rendering.
Is there a way to render a vertex array object but have the data be passed through multiple shaders? For example, a shader that applies a normal map to the texture, and then a shader that blurs the…
DaNubCoding
- 320
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1 answer
Why are half my uniforms missing when initializing a compute shader using python modernGL?
Here is the problem: I'm creating a compute shader in python for radiative transfer using modernGL. But upon creation, it does not contain all the uniforms I declare in the shader code.
Here is my (simplified) python code:
# Creation of the…
Azireo
- 145
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0
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1 answer
Pip can't build wheels for pyproject.toml projects because it can't find "--plat-name."
I'm trying to install moderngl using pip. Of course,
python -m pip install moderngl
It failed to build wheels for moderngl and one of its dependencies, glcontext. In both cases, it gave me the same error message:
error: --plat-name must be one of…
David Cleland
- 13
- 5
0
votes
1 answer
How to get render data from (headless) context in ModernGL
After creating a headless context with
ctx = create_context(standalone=True)
ctx.viewport = (0, 0, 500, 500)
and creating a vertex array, I wish to get the image data of vao.render(). Is there any way to do this?
Edit: Actually, I'm not sure how to…
MichaelT572
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content[0][2] must be an attribute not NoneType moderngl
I am trying to test the following simple example wherein I pass something to the vertex shader and read its output to print.
import moderngl
import numpy as np
import struct
vertex_shader_source = '''
#version 330
in vec3 attPosition;
…
WillyWonka
- 91
- 1
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0
votes
1 answer
Ensuring endianness in moderngl buffers
I'm trying to learn moderngl for Python and I want to know if there is a way to make certain that when I read/write to a buffer (uniform or shader storage), the endianness agrees between guest and host devices. I have the following minimal…
user2649681
- 750
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0
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0 answers
How to resize/move Window while executing other scripts/functions? moderngl-window and pyglet
My goal:
Write a class that plots something after creating a window and using vao.render(mode=moderngl.PATCHES) only when an update() method is called, in order to update a dynamic VBO. imshow by matplotlib is just toooo slow.
The issue:
Based on…
Breno
- 748
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python ModernGL pixel perfect textures
I am using ModernGL to render a 2D texture with pixel perfect precision. My image contains a series of boxes which are 1 px wide, but when I render them, some of the edges are wider than others. I am using orthographic projection which should give…
00728M
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0
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Minus values of distortion coefficients cause broken images with OpenGL Vertex Shader
I'm working with python moderngl to generate a simulated scene views from point clouds made from Digital Elevation Model and airborne photos.
I implemented a camera model based on OpenCV in GLSL Vertex Shader and it works well usually.
However, some…
0kam
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- 1
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2 answers
moderngl headless hello world gives unexpected results
I'm running into a very strange issue with moderngl latest version when running in headless mode. The following code should give me a triangle that touches the edges of the viewport on the right and on the top, but instead the right and top vertices…
Jochemspek
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-1
votes
1 answer
Freezing Python moderngl application with PyInstaller
I am attempting to create an executable program out of a Python project that uses moderngl. Here is a minimal example that just creates a window and waits til it's quit:
import moderngl as mgl
import pygame as pg
pg.init()
screen =…
user2649681
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