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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1answer
432 views

blender 2.8 beta doesn't find opengl

Blender 2.8 doesn't load on my windows 7 notebook. It only says several times: "Warning! Ignoring untested OpenGL context profile mask bits. Warning! OpenGL core profile not available." I already ...
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1answer
36 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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2answers
466 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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1answer
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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2answers
274 views

Bezier Curve TILT or Normal exporting

I am currently trying to make a rollercoaster in OpenGL. To do this, I prepared the track in Blender (following a Bezier curve) and exported it along with the curve as .obj files in OpenGL. My ...
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0answers
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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1answer
326 views

Python Opengl Render doesn't show texture

when I click opengl render button in the GUI of the 3D view, the rendered image contains texture. However, when I use python script to render the same thing, I only get solid image without texture. <...
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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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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
76 views

Is possible to keyframe a mask textures as a factor for two other textures in realtime?

Is possible to keyframe a mask textures as a factor for two other textures in realtime? I have set up a blender internal materials node setup, basically two distinct materials mixed with a Mix RGB ...
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0answers
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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59 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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1answer
117 views

How do you create a KX_PolygonMaterial?

I try to attach a PyOpenGL Shader to an object using the setCustomMaterial() command but It raises an error: 'KX_BlenderMaterial' object has no attribute '...
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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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1answer
410 views

Removing Anti-Aliasing from shadows in the BGE

How do I fix the anti-aliasing in edges of shadows in BGE?
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0answers
212 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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1answer
139 views

Banding artifact on open GL Render

I'm currently working on an animation openGL project, and i have this "banding" artifacts on gradient induced by spotlights (see picture below) I'm aware it seems to be because of 8bits precision ...
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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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1answer
513 views

Running Blender under Virtualbox

I setup a VirtualBox machine under Windows for dev related stuff (python, visual studio etc), everything works except that I cant run Blender :( it crashes with ...
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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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0answers
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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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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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
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
300 views

Blender 2.8 slow render under mesa-18.3.2 and xvfb

How I can profile timings in Blender 2.8 Eevee engine rendering process? I have blender 2.8 (nightly build) running inside docker container, with mesa-18.3.2 (build from sources) and gallium driver ...
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0answers
1k views

Does a model exporter embedding materials as GLSL scripts exist?

as described in Blender Shader in OpenGL/GLSL, it is possible to export the (unoptimized) GLSL code generated by Blender for a given material. Since the viewport can use such GLSL for real-time ...
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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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2answers
1k views

Visible seams on tangent normal maps

I'm having a small issue with visible seams on normal maps. The map was painted on Substance Painter and has no weirdness around seams. When I plug it into a Normal Map node set to Tangent Space this ...
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0answers
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
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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0answers
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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0answers
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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0answers
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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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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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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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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0answers
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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0answers
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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4answers
7k views

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?
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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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224 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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0answers
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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1answer
929 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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0answers
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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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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1answer
499 views

Lighting preview does not work in Blender 2.78?

It seems that the OpenGL light previews are not available in the material preview mode (neither cycles nor internal edit: only in cycles) with the most recent blender version. Was this intended or is ...