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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Is possible to draw over render image and save it?
I would like to draw on top of render image and save it. For example, I would like to draw a text or a line and then save the final image as PNG.
I was thinking to use something like this: Is it ...
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Why do (bgl) exceptions in modal crash blender
No matter what I type into the console, or execute from the text buffer, blender shows an error but continues on as usual. However, I recently noticed that many exceptions (involving bgl callbacks) ...
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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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Working in 3D stereo in the 3D view - hardware requirements?
I want to run out and buy a pair of active shutter 3D glasses so I can watch and adjust animations in the 3D viewport using time sequential mode, but the part about the graphics card supporting Quad ...
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Is the Network Render addon able to render with openGL?
I would like to render an openGL preview using my rendering network, but there is no such option in the rendering engines dropdown. What can I do?
I built the rendering network with "Network Render" ...
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Can I access the render screen size in a custom filter 2D in the game engine?
I am using Blender Game Engines Filter 2D to make a post effect with GLSL.
In an fragment shader applied on the frame buffer, I want to access the size in pixels of that buffer in GLSL.
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How to display the current frame number as part of the open GL render?
I'm amazed I can't find anything that displays the current frame which is helpful to study test timing and adjusting and knowing where it went wrong. Ideally I would like to show seconds and minutes ...
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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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How to blur part of the screen in the game engine?
I'm making an FPS game, and for some of my guns, i want to be able to zoom in so that i can see farther. This isn't the problem. What i really want is to make the rest of the screen (The part not ...
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How to access the window width/height inside a GLSL Shader?
Inside a Python script defining a GLSL shader used on the game engine, how do I access the width/height of the game window?
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White edge around objects with alpha
I have a simple texture, of a bush (for a billboard plane)
There are very annoying white artifacts around the edge of the plane.
I am using GLSL shading in the BGE.
UV/Image Editor ...
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Blender won't start - GPUShader: compile error - AWS Elastic Graphics [closed]
I am looking to run a Blender workload in Amazon Web Services (AWS). I am testing on a Windows Server image on a non-GPU compute resource. Instead of GPU I am attaching AWS Elastic Graphics to the ...
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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 ...
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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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How to draw shapes in the node editor with python bgl
I want to draw a diagram using shapes such as triangles and squares in the node editor. How can I do this?
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