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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questions with no upvoted or accepted answers
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Per-Vertex lighting in GLSL?
How can I achieve per-vertex lighting (like in single/multi-texture shading) in GLSL with all of the other GLSL features (like buffer shadows, texture layers, etc.)? Bonus points if it can be done in ...
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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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PyOpenGL and VBO Indexes
Long story short, I'm trying to do a modal handler that draws using OpenGL into the viewport. Immediate mode through BGL works fine, but is dog slow. I tried using VBOs through BGL but there seems to ...
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How to use bgl?
I want to render simple lines on the 3D viewport through a modal operator but not using glBegin/End because those commands are deprecated in opengl 3.3 and will not be avaliable on 2.8 leaving me ...
4
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Viewport widgets with draw handler
Is it possible to create viewport widgets with draw handler?
I have an operator which produces simple mesh geometry, I use operator redo properties panel to edit the result as shown in animation ...
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3
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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 ...
- 51
3
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Rendering with OpenGL in Blender does not show the intended rendered image or animation
I am trying to render animations and images fast using the OpenGL feature in Blender but even though I want it to render a fully rendered image or animation, it only renders the solid image, or the ...
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How do I use Bgl?
So my question is:
I understand nothing about openGl api, that's super confuse to me, Where do I start?
I did get that I need to append a callback to a draw handler and remove it to enable/disable my ...
3
votes
1
answer
480
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How to apply two different materials in Blender Internal on front faces and back faces, *while involving transparency*
Basically, I want to see through the transparent front faces to the opaque back faces. This isn't the same as flipping all normals and executing backface culling because I want the front faces to be ...
3
votes
1
answer
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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 ...
3
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How to correctly export from blender to opengl with a texture?
I am learning opengl from here and we are given an obj file for blender of crysis nanosuit.
When I load this with opengl, it just loads fine. But then I imported the file to blender and added some ...
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3
votes
1
answer
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Can I use Blender on Intel HD 530 dedicating an Nvidia GPU to Cycles?
I'm trying to specify the build for a new PC, my current one is 5 years old and starting to show its age. It's going to be a multi-use machine for Gaming, Virtualisation, Coding, Blender and possibly ...
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3
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Could not Render Loaded Texture in 3D View by bgl module
I wrote below scripts to render texture already loaded by blender.
However, no images are rendered on 3D View.
This code works correctly when I run this script on blender 2.70.
But, this script ...
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3
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.blend file size much larger after OpenGL Render
I am working on a detailed dialogue scene that is 600 mb. It is a very complex scene, with each part in single layers. I know that is a very big file size, but what my machine can handle it. What ...
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Dashed Lines GLSL Even Sizing
I'm working on a dashed line shader in a Blender add-on and my aim is to get all lines, regardless of length, to have the same sized dashes and dash spacing.
GPU shaders are relatively new to me so I ...
- 83