GhGL Shaders - a bunch of shaders to share

[crz_06]

Hi everyone,

I wanted to share a small collection of shaders that I recently put together into a single file. These shaders are a compilation of various versions I found online, contributed by talented individuals such as @stevebaer, @Mariusz_Hermansdorfe, and @jho. I’ve made some tweaks and modifications to them myself, and I’ve also created a few new ones with the help of chatgpt’s creative input.

Feel free to utilize these shaders in your projects, make adjustments according to your needs, and even contribute your own shaders to expand this collection. I’ll be adding more shaders in the upcoming days and weeks. I’ve found them to be more efficient in terms of execution speed compared to traditional methods.

To make use of these shaders, make sure you have the ‘ghgl’ (7.8.0) plugin installed via your package manager (Rhino 7)

Happy experimenting!

Shaders_combined.gh (192.5 KB)

[Quan_Li]

Thank you very much for sharing all these shaders!

The Fresnel Shader created by @jho shows tris along the surface.
I see those tris in your GH either.
Is it possible to repair it?

GL Mesh Shader component issue with transparency colors

Fresnel Shader is broke.gh (86.1 KB) I downloaded it from the Github link below. It was created by @jho. As the first picture shows, it shows many mesh face shapes in the viewport. Is this my end problem or this shader is broken? [image] [image]

[crz_06]

Here a update.
Modified for usability and added a new bunch of shaders. Feel free

MESH

• show Wireframe
• show Vertices
• show Shaded
• show Normal
• show Textured
• show Textured Shading
• show Zebra
• show Heightmap
• show Contour Fill
• show Contour Lines
• show Radial Gradient
• show Conical Gradient
• show Draft Angle
• show Edge Draw
• show Slope
• show Aspect
• show Toon 1
• show Toon 2
• show Half Tone
• show Two Sided
• show 3D Print Overhang
• show Fresnel
• show Sun Shading
• show Vertex Symbols

CURVES

• show 2 Directional Gradient - world
• show Simple 1 Directional Gradient - screen

shaders.zip (9.2 MB)

required GHGL 7.8.0 plugin (install via package manager), OpenGL shader support in Grasshopper

Credits to @stevebaer, @Mariusz_Hermansdorfe, @laurent_delrieu, @jho , and @crz_06. My appologizes if I forgot someone. All were modified by @crz_06 and main sources: GitHub - mcneel/ghgl: OpenGL shader support in Grasshopper or https://discourse.mcneel.com

[seg]

Thanks @crz_06
How to use a different vector instead of Z axis, in this case Camera direction

glmaps.gh (111.7 KB)

[crz_06]

@seg

ow to use a different vector instead of Z axis, in this case Camera direction

glmaps_edit_crz_06.gh (119.8 KB)
added variable vector. If you need real-time camera update change python accordingly or use external plugin to get you camera dir vector

[crz_06]

I case you didn’t know there is a ShowZBuffer command in rhino that toggles the display of a grayscale z-buffer bitmap with the same dimensions as the viewport.

[seg]

Thank you , works as expected

@crz_06

ShowZBuffer

Yes i know about it