Running GLSL shaders in Grasshopper?

[wynott (Ryan Wynott)]

What would it take to make something like this a reality?

[diff-arch]

There is an experimental plug-in for Grasshopper called ghgl that lets you write custom shaders. You can install it through the PackageManager.

[laurent_delrieu]

Hello
@wynott is your question answered by @diff-arch, which mean you didn’t even try to search if this functionality even exist. Just use Shader and Grasshopper as keyword and you’ll find many example.

GhGL Discussion

Here’s a recording from the presentation today

GhShaderNodes

Using GhShaderNodes, Raytraced render (50 passes) and Intel denoiser. [20201118_shaderNodesBottle3] [20201118_shaderNodes3] bottle shader3.gh (11.9 KB) [20201118_shaderNodesBottle2] [20201118_shaderNodes2] bottle shader2.gh (25.0 KB)

GhGl shader respecting lights in the scene

Hi, Could someone help me to understand how I can modify the code in the GL Mesh Shader button to respect the lights in a scene? Or am I just missing how the GL Mesh Shader works? Thanks!

Crosshatch Shader GhGL

Hi, Has anyone created a crosshatching shader for ghgl? Is that something that is relatively straightforward? I know a bit of python, but haven’t really done anything in opengl. Thanks

Or is there a sort of question in your image? Like is it possible to output values from shader and use them in Grasshopper? From what I understand Shader only “discuss” internally in the graphic card. Could be cool if it was possible to reuse directly some algorithm. In this link I rewrote something from shader.

Ocean Wave Generation in Rhino

Cool this one seems quite simple to code. Because at the end it is interesting to be able to make it for “real”. Yes that was simple, [image] [sea-] Wavelength is Pi/2 units, if you need 50 waves you need to make a 50 * pi / 2 grid. Iterations is the number of frequency, the less the smoother. Speed is hardcoded, so play on time to move the wave. The period is PI because the speed is 2. Lower the iterations and grid size to tune the sea you want. ocean wave water shader.gh (13.7 KB)

[wynott (Ryan Wynott)]

I want to use the results of a compute shader further in GH.

Not interested in changing how the viewport looks.