Questions about OpenGL (Open Graphics Library) OpenGL is an API used to render real-time 2D and 3D graphics. Blender uses OpenGL for drawing the user interface, 3D view, and the game engine.
Questions tagged [opengl]
263 questions
14
votes
4 answers
What version of OpenGL does Blender use?
I know that Blender makes extremely heavy use of OpenGL. What version of OpenGL does Blender use, and how difficult would it be to port it over to OpenGL ES?
fouric
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3
votes
1 answer
Custom GLSL Filter for Viewport
Is it possible to add my custom GLSL filter to 3d viewport? Like my custom SSAO or custom fog based on depth and normal passes.
I want to add my custom SSAO filter to a 3d viewport form here…
mifth
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3
votes
0 answers
blg module not being detected
i just started using bgl with blender scripting
and it's giving this error "AttributeError: module 'bgl' has no attribute 'GL_MODELVIEW_MATRIX"
i just checked on API documentation and it's supposed to be there
any idea?
import bgl
'''code from API…
XIWEI ZHOU
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- 1
2
votes
3 answers
Warning! Legacy WGL is unable to select between different OpenGL versions
I was using blender 2.76b on a Windows 7 Ultimate, and nothing really weird showed up when I opened blender and the cmd window appeared, before the blender window appeared.
I updated it to 2.77a, and now in the cmd window, it says:
Warning! Legacy…
Yubin Lee
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2
votes
1 answer
How does Blender implement flat shading non-planar polygons?
Following up on my recent question on ComputerGraphics.SE — how is flat shading of non-planar polygons implemented in Blender?
If polygons are rendered using GL_TRIANGLE_FAN in OpenGL, one approach would be to upload a single normal vector for every…
Ailurus
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2
votes
1 answer
Hide smoke domain objects in OpenGL quick render
Is it possible to hide the domain object for a smoke simulation in an openGL quick render without hiding the smoke?
The domain can be distracting in preview renders even when rendered as a wireframe.
Toggling the visibility of the domain hides the…
gandalf3
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- 1,133
1
vote
1 answer
blender with openGL 1.3 or lower
is there a way to bypass this openGL support, i just need to run this program on low spec computer in purpose.
or maybe there's another suggestion about what program that i can use with OprnGL 1.3
best regards~
reckless
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1
vote
0 answers
Blender Won't Open because it says I need OpenGL 3.3
I've recently wanted to get back into using blender for some fun art projects, but anytime I try and install the program and run it, I run into issues. The last time I used it was in December of 2020, so I know it's updated, but I'm pretty sure my…
Tyler Berkeley
- 11
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1
vote
1 answer
GeForce GTX 760: Unsupported Graphics Card or Driver
I recently installed Blender on my desktop to dip my feet into 3D modeling and printing.
The computer has an AMD A10-5800K CPU with integrated graphics, which does not support OpenGL. I recieved the “Open GL 3.3” error when trying to run blender.
I…
ddainwood
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1
vote
0 answers
Blender 2.81 OpenGL 3.3 Error
So recently I got a new computer since my old one was pretty bad and I needed an upgrade. This PC is incredibly fast and powerful but for some reason it's having trouble running Blender 2.81. I've seen other cases similar to mine but there is…
Braden Thomas
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1
vote
1 answer
Blender 2.8 refuses to run on my PC
When I try to run Blender 2.8, I get the error "Device init failed: 0x80070490"
My Windows 10 PC has the following graphics card:
NVIDIA GeForce GTX 960
According to the geforce.com site, the OpenGL version on this card is 4.4, which should be…
O.T.Vinta
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1
vote
0 answers
Is there a way to make Blender 2.8 STOP checking my OpenGL version?
My OpenGL version is just fine, but when Blender checks, it gets a bad result because I'm running via Remote Desktop. This wasn't too bad in previous versions because Blender only checked once on startup--so I could start Blender at my console and…
Charles Jenkins
- 207
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1
vote
1 answer
Blender throws Error: Exception_Access_Violation when Duet Display installed
As the title suggests, Blender would throw Error: Exception_Access_Violationand not load when I have Duet Display installed. Duet works fine with or without Blender, but Blender will only work when Duet is not installed. I've read about this problem…
Microbob
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0
votes
2 answers
Animate properties in GLSL shading
I'm new in this community.
My name is Francesco and I am passionate about Blender.
I hope to learn well.
I have a problem I can not solve...
I wish animate the alpha channel and all the material properties (and textures) of an object and then render…
0
votes
0 answers
OpenGl and Blender
Dear Blender Community,
The goal is object coordinates.
OpenGL provides information about view coordinates, normalized device coordinates, clip coordinates, eye coordinates, and object coordinates.
The OpenGL matrices:
The final object…
Miles Taylor
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