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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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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Custom shader script in compositor (de-linearize depth buffer)

Some months ago I wrote a minimal opengl 2.5d game engine with pre-rendered backgrounds (such old Resident evil, Alone in the dark and Final fantasy games). Depth is managed through a grayscale image ...
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20 views

How to run Blender on the discontinued Intel 4 Series Express Chipset Family?

is there any way to run Blender on the discontinued Intel 4 Series Express Chipset Family or will I have to fin
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13 views

quick preview animation with animated material?

I am looking for a poor man's render of an animation in order to evaluate blocking, timing, camera movements etc. without the "cost" of a full render. I found Is there a way to make a quick ...
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15 views

How do I recognize normal map type? whether it's +Y or -Y?

I downloaded some free models with textures as zip file. How do I know the normal maps used in it are directX type or opengl type? The models look very similar/slightly different when I flip the green ...
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2answers
107 views

Preview in viewport using OpenGL shader

I am trying to apply a custom shader (OpenGL, but if that's not possible I can learn OSL) to a STL. I will not use any lights, cameras, I'm not going to render it eventually. I would like to have the ...
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2answers
243 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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65 views

Blender 2.83 OpenGL 3.3 Error

i'm trying to use Blender 2.83 in my laptop but i have the classic problem " a graphics card and driver with support for OpenGl 3.3 or higher" but i have a GT 540M that supposedly is OpenGL 4.6, i ...
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27 views

Why isn't ambient occlusion rendering on objects closer to the camera?

In Blender2.79, Opengl renderer, on trying to render an animation in the viewport with ambient occlusion enabled for quick "outlines", blender renders outlines on the monkey head (farther from camera) ...
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1answer
23 views

OpenGL freezes and turns off blender

I've encountered this behavior several times that blender put random black and white points on the blender window then a message box appears and says "Too many errors occurred. Application must close ...
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1answer
513 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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26 views

Fast streaming camera view to video for linux (v4l) system device

What i'm trying to achieve is to stream an arbitrary camera view in blender to a v4l device. What i've done so far After reading the community post about streaming the Eevee view on Windows and linux, ...
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53 views

Joint GPU Shader Module and Viewport Rendering

Running one of the examples provided in the GPU Shader Module documentation works as expected. For example: ...
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1answer
187 views

Blender 2.8.2 Crashes on Startup (Windows10) - Not enough video memory?

Update: Also tried 2.78 - It seemingly gets little bit further but still hungs up before accessing the program. I just installed Blender 2.82a off the Windows64 installer on my brand new PC and it ...
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72 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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1answer
362 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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1answer
13k views

Where is openGL render options in 2.8?

Here what options in 2.7x: Where is OpenGL render options in 2.8?
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15 views

Is there a way to render depth buffer into a texture with GPU/bgl python modules?

I need to render depth buffer of Blender's scene into a texture to further use it my shaders. I tried using the common OpenGL recipes for doing that, but none of them worked as it seems there is ...
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16 views

Order of operations when calculating object transform matrix (matrix_world, viewport channels, OpenGL model matrix)

With its Python API, Blender allows us to directly assign the transforms of objects, using matrix_world attribute. Under the hood Blender renders objects via ...
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0answers
14 views

Rendering depth buffer to texture using BGL fails on FBO drawing

I am writing a custom render engine for a level editor addon with GPU / bgl modules. I need to render a depth buffer to texture to later use in my shaders. I tried the way it is usually done with ...
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1answer
78 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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29 views

New GraphicCard - No compatible GPU found

I ought a new graphic card - (GTX 1660 Super) for my win7 PC. I Installed the newest driver, but blender 2.82 doesn´t allow me to use OpenGL. Only CUDA. I´m lost...
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1answer
120 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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4answers
3k 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
36 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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37 views

I need a handler for render_complete but with OpenGL render

Is there a handler to execute a function after an OpenGL render (after the whole animation is rendered). Because this script ...
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1answer
102 views

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 “...
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1answer
147 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
894 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
3k 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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2answers
142 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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1answer
84 views

Higher Resolution Viewport Render

I'm trying to render a black/white wireframe image of my scene and have perfected how I'd like it to look in the shading viewport, but I can't figure out how to save out that viewport at high ...
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1answer
410 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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29 views

GTX+Radeon in Blender - It's possible? [duplicate]

I'm a long-time Blender user and my projects are becoming more and more complex and I was thinking in buying a new GPU. Now I'm using a GTX 970 V1 Windforce and a Intel Xeon X5660. A lot of people ...
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1answer
71 views

How to draw RGBA 2D image in 3d_view with gpu module (or without)?

I just copied and pasted from https://docs.blender.org/api/current/gpu.html#d-image: ...
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0answers
289 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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1answer
103 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
931 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
218 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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169 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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0answers
22 views

How does Blender render with flat shading without duplicating vertices [duplicate]

When applying a flat shading on a mesh in OpenGL effectively means that you need to duplicate certain vertices to split the normals. However in Blender the number of vertices in a mesh ...
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44 views

Why is UV mapped texture not visible on workbench in B.2.8?

I made a simple factory building with two materials. One material [factory_floor_material] is assigned to the floor of the factory. One material [factory_wall_material] is assigned to the walls of ...
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1answer
57 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
35 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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0answers
62 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
341 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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77 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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19 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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34 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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275 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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