Questions tagged [opengl]

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.

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23 views

2.81 Render an armature like OpenGL in 2.79

Is it possible to render armature bones in 2.81, like it was in 2.79 with OpenGL?
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35 views

Integrated Graphics Requirments for Newer Laptops?

I'm buying a 10th Gen Intel Core, HP laptop. The specs say it only has an Intel Graphics Coprocessor. Will it run blender 2.8? https://www.amazon.com/2020-HP-Touchscreen-Premium-Laptop/dp/B081SM57RY/...
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17 views

Get Image Position in Image Editor for drawing lines with bgl

I am trying to draw some guide-lines on top of my image in my image-view using bgl. But when I draw the coordinates of my shape/line is relative to the screen/view when I actually want what I draw to ...
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27 views

Render order of triangles is wrong with custom draw handler

Example code from GPU Shader Module (gpu) "Mesh with Random Vertex Colors" renders faces in wrong/weird order, what might be the cause? ...
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31 views

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 ...
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10 views

Opengl script not rendering in 3D_View

On running Blender2.79- Bgl/Blf scripting template "Operator_modal_draw",nothing renders in VIEW_3D . context.area.type == 'VIEW_3D' There are no Errors nor any output on the Console.How to ...
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11 views

Opengl Gpu module import error's

In Blender2.79 (Windows10/64bit-Exe application) On running the sample Opengl/Gpu script - 3D Lines with Single Color on a Gpu which supports Opengl 3.1,Blender doesn't recognise the builtin Opengl ...
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58 views

Opengl 3.3 drivers blender 2.81

I use blender 2.81 at start, I get this error, the drivers are updated through the driver pack solution. Some may say that the graphics card is not suitable and needs to be updated. But if I use ...
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2answers
58 views

Blender 2.81 with Nvidia Quadro 2000m

I recently installed Blender - the latest update. Never before used this software. I have a relative old PC, HP 8560w with a quadro 2000m graphic card. My first problem was an error with "no open GL" ...
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1answer
143 views

How to make voronoi move like living ants?

In Twitter link below, I saw this work by Joe Gatling a few days ago. His voronoi moves like live bugs. How do you create that in Blender? Moving ants with voronoi. Edit. I'm back. I've just ...
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32 views

Why does Blender's front view point in the negative Y direction?

When switching to the Right view in Blender, the X axis points into the screen. When switching to the Top view the Z axis points into the screen. If we switch to the Front view, then the Y axis ...
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1answer
39 views

2D 'POST_VIEW' drawing with gpu.types.GPUShader(vertex_shader, fragment_shader)

I can use gpu.shader.from_builtin("2D_UNIFORM_COLOR") to draw a square to a view (the nodeview), and give it a single color, but I want to use a custom shader. Does ...
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1answer
32 views

Blender 2.8 render farm on DL380 Gen9 w/ Virtual Shared Graphics Acceleration

We're looking to upgrade our render farm from 2.79 to 2.80 using a Tesla M10, Quadro P6000, or Quadro RTX6000 and enabling Virtual Shared Graphics Acceleration on DL380 Gen9 – We're trying to meet the ...
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79 views

Opening blender,black tab,error message A graphics card an driver with support for OpenGL 3.3 or higher is required

I have downloaded Blender off Steam and when i try to open it, it it opens with the tabs I describe further down. I have updated my drivers via the control panel and my graphics card supports OpenGL 4....
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1answer
28 views

Blender 2.8 sometime I can not open my blender file by OpenGL 3.3 Error

Sometimes I can not open my blender file. I save the blender file and then I can not open it in next time. But I can open other blender file. graphic driver is latest ver Blender file is broken ? I ...
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24 views

Blender crashes randomly while using - OpenGL issue

I've been experiencing one particular problem for over two years without a solution. When using Blender (even just navigation in GUI), it randomly crashes. When I look to the Events Viewer, I get ...
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34 views

Rendering Grease Pencil objects on headless, no GPU render farm machines in Blender 2.8

Like many other posters, my company has been running into problems when trying to render Blender 2.8 scenes on headless, no GPU render machines. We are using AWS Thinkbox Deadline. We are able to get ...
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16 views

Exporting MTL File from Blender to Render in OpenGL

I recently started using Blender to create 3D models for a game I'm programming with OpenGL and GLFW. However, I'm experiencing a lot of difficulties exporting and using Material Library Files (.mtl) ...
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1answer
48 views

Can't try Blender 2.8 due graphic card and/or driver

this post may seem repetitive but among many with this kind of issue none of them can help me. I already updated both drivers (Intel and Radeon) and BIOS, installed Radeon ProRender + libraries and ...
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0answers
20 views

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 ...
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57 views

Blender 2.8 refuses to launch with OpenGL error even though GPU driver supports 3.3 and is up to date

Blender refuses to launch and displays this error: I have a Geforce GTX 970 and the drivers are up to date. NVIDIA specs confirm that GTX 970 supports OpenGL 4.4 (https://www.geforce.com/hardware/...
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14 views

Can Opengl in Blender 2.79 render specular highlights?

I am working on a documentary and chose Blender as my motion graphic software, but just now I figured out that the final Opengl render is a bit different from what is shown in the viewport. The reason ...
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1answer
43 views

Blender failing to open saves using cycles render. (OpenGL 3.3 or higher error)

I have been trying to get back into blender but most of my saves aren't opening. I get the "Blender - unsupported Graphics card. the graphics card needs OpenGL 3.3..." If i save the file as Eevee they ...
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64 views

How can I draw multiple OpenGL primitives with the GPU module?

Is it possible to draw multiple types of Opengl draw methods inside the same shader batch? Based on the the GPU module documentation, please see the code below. For instance I have this line. <...
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1answer
45 views

How to highlight a polygon or a vertex under the pointer in Python?

I am trying to figure out how to highlight a polygon or a vertex that could be under the mouse pointer in Python for 2.80. The highlighting is just a visual indication. I realize that I will be ...
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35 views

Accessing OpenGL Render result pixels

I'm currently attempting to reach the pixel information of a Render Result. For performance reasons I do not want to save the file, only to render it, using Viewport Rendering. The Render Result image ...
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223 views

Blender won't open on windows 10 32 bit

this week I installed windows 10 32 bits on my old laptop because i was bored of linux but I could not install windows 10 64 bits for some reason. I installed blender but I got this message ...
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1answer
928 views

ERROR: A Graphics card and driver with support for OpenGL 3.3 or higher is required

I can't execute newest Blender 2.80, it says that I need a graphics card that supports openGL 3.3 or higher Processor Description AMD A6-3670 APU with Radeon(tm) HD Graphics, 2695MHz BIOS Version: ...
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403 views

Opengl 3.3 in blender 2.8

I have Intel i3 processor with Intel hd3000 graphics. Will blender 2.8 work ? Or I need to install opengl 3.3? Will that work on this graphic card?
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2answers
465 views

How to Save OpenGL Viewport Animation in Blender 2.8?

I am able to create the viewport animation, and then play it back from the render menu, but there doesn't appear to be any option to save it. When I render from the camera I have, it saves to the path ...
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9 views

“Light preview” window - Blender crashed [duplicate]

When the preview window (proprieties editor - light) of the light source settings is open and I change the settings of the light source, a system error crashes: "The NVIDIA OpenGL driver lost ...
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2answers
563 views

What happened to OpenGL render? Why has EEVEE been so slow at files?

I just spent days rendering something in 2.80, and it's got some problems, so I'll need to re-render. The thing is I don't even need anything but OpenGL rendering for this, but OpenGL along with the ...
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81 views

Blender 2.8 worked on windows 10 1803 but not in 1903?

I installed it about 5 months ago and it worked fine until i updated windows to 1903. there were already big changes in blender 2.8 so i redownloaded it but program said that my graphics card doesn't ...
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211 views

Blender 2.8 render farm commandline cycles without opengl 3.3

I used Blender 2.79 for some projects and rendered them on a cluster with 160 cores (Windows Server 2008 R2). No opengl 3.3 available works fine... Now I tried to upgrade to 2.8. I was able to get ...
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26 views

How do I find the final pose matrix for every bone to send to the shader?

Hello any advice would really be appreciated. I know there are lots of threads on this already but I have read many of them and I am still having trouble. I want to export a simple skeletal ...
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1answer
81 views

blf is a module or a parameter?

blf is a module or a parameter? I have read the documentation of blender, and I do not understand well what blf matters, or if it is only a parameter. I ...
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1answer
37 views

How do I make objects not renderable in OpenGL Render / overlays disabled on Blender 2.8?

I have some mesh that i do not want to be visible when disabling the overlays button but they still do so, in Blender 2.79 checking the Render only box was enough but here it doesnt work like that. ...
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157 views

Where are the settings to increase cycles threads?

I am trying to adapt the cycles render code to allow me to use the full threading power of my GPU (Radeon RX750 8Gb, 2048 OpenGL threads). There seems to be a limit from some time ago of 1024 threads, ...
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35 views

OpenGL texture painting

Does Blender 2.8 use OpenGL to store and project brush alphas like most modern software architectures do? Because I'm experiencing major brush stroke lag on low poly meshes with 4k textures.
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71 views

Blender not running with software opengl

I'm trying to run blender(2.80) from windows 2016 server with 2x nvidia tesla v100 and a matrox g200he3(?). When I try to run it(in RDP and VNC), I get the opengl version higher than 3.3 message. I ...
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3answers
2k views

Blender 2.8 How do i make objects with Render View disabled to not be visible on Viewport / OpenGL Rendering?

I have some objects which i do not want to be disible on the Viewport nor the OpenGL rendering previews, back in 2.79 it worked just fine by disabling render view on the outliner and enabling the '...
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1answer
45 views

What is the substitute for gpu.export_shader in Blender 2.80?

I am trying to export GLSL from Blender materials in a scene. This call appears to have been removed from module "gpu" in Blender's Python API as of 2.80. Is there any substitute? How should I proceed?...
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21 views

Can I access Blender's internal openGL state from bpy or bgl?

I am interested in building a custom scene exporter and for that it would be nice to be able to access Blender's openGL state directly. I'd like to, for instance, be able to access allocated VAOs, ...
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1answer
160 views

For Blender, which is the better language to learn - OpenGl or OSL? And why?

I have only yesterday started to learn OSL. Since OSL tutorials are scarce in Youtube, I am beginning to wonder if OSL is becoming obsolete as I get the impression that it is overshadowed by OpenGl. I ...
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2answers
110 views

Is there a fast way to render an obj+mtl file to PNG

I'm using command line blendering an obj+mtl file to PNG this question. However, it takes 2 seconds to render a scene. Is there a faster way to do so? Because, I need to render hundreds of output ...
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20 views

How to get and convert Blender 3d viewport to curve data [duplicate]

Searched a lot in python api of bgl and gpu modules. Is there a way to get curves (lines) separated by types of shading from camera projection of 3d Viewport gpengl? For example on image bleow ...
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62 views

Is it possible to run Blender 2.79 with this hardware and software configuration?

On my Mint 19, 32 bit, I've got this information: $ inxi -Gx shows the next lines... ...
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0answers
18 views

OpenGl Blender Python? Text based animation

I understand that blender uses opengl to render the 3d graphics. I need to try and achieve a 3d animation in the lightest way possible. Is there a way to get equivalent results as to what I've learnt ...
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2answers
13k views

Blender 2.8 Beta: OpenGL 3.3 Error?

Before I start, YES, I have done my own research - I know how annoying a repeat question is. Yet each answer is so specific to others... When I tried the beta 2.8 64 bit, it says "Blender requires a ...
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24 views

Why do I get a “Can’t detect 3D Hardware accelerated driver” error when opening Blender? [duplicate]

I downloaded Blender from the Windows App Store and I tried to open it. A message later appeared reading “Can’t detect 3D Hardware accelerated driver” It says I need OpenGL support 2.1 but I already ...