Just learned that my little visual cosine gradient generator tool (from 2015) is featured in this popular video tutorial (1.1M+ views) about artistic shader programming:

https://youtu.be/f4s1h2YETNY?t=971

The tool is still here:
https://dev.thi.ng/gradients/

If you want to use these gradients outside shaders (e.g. for dataviz purposes), the actual gradient functionality is also included in these two libraries:

https://thi.ng/color (TypeScript/JavaScript)

Related readme section with presets and code examples:
https://github.com/thi-ng/umbrella/blob/develop/packages/color/README.md#cosine-gradients

Clojure/ClojureScript version:
https://github.com/thi-ng/color/blob/master/src/gradients.org

RAAAAH! And we’re back in business.
#shader #coding #raymarching #4kintro #demoscene

New blog post: "The current technology is not ready for proper blending"

https://blog.pkh.me/p/43-the-current-technology-is-not-ready-for-proper-blending.html

Playing with #colors to illustrate my next blog post

I swear every time I open ShaderToy.com because I'm trying to figure out how to make a certain effect, I just end up spending the next 20 minutes admiring the insane shaders people create.

For example (dizzy warning) - https://www.shadertoy.com/embed/7lBXRG?gui=true&t=10&paused=false #3D #Shader

It's funny how simple and fast a basic raytracer can be.

I remember in my first year of IT school (2007-2008) when we had to implement one on CPU, and we had to wait several minutes for one picture to be rendered.

Of course this one is still very basic, but hey it's in real time baby

Dear #shader #graphics #programming community:

Where is the rendering error on my raymarched sphere grid coming from?

Farther away spheres distort in circular patterns when stacked. Dunno if it's caused by space repeating function running out of accuracy, and far away grid components starting to count in..

But it's kind of hard to do a grid without a repeating function!

Any ideas appreciated.

testing new wrinkle system on torso.
ultra fast fbm : )
#glsl #shader #raymarching

Got a pretty decent version of a wall sliding mechanic working and with animations playing

#gamedev #indiegame
#coding #dev #indiedev #unreal #madewithunreal #gaming #videogames #gameplay #3d #blender3d #UnreaEngine5 #animation #shader #nature #coding #conceptart

Some shaders I've made today

Can any #shader writing experts help me?

I have a large grid of things, each of which looks roughly like a white circle inside a black square.

I get a *big* Moiré effect when I zoom out. Averaging a grid of subsamples doesn't seem to help much.

Is there a better way of smoothing things out?

Anyone know if an XY lissajous oscilloscope GLSL #shader already exists?

and/or if it is nuts to try make one?

I read "Visualizing Complex Numbers Using GLSL" and created this based on that post:

https://www.shadertoy.com/embed/tfVXz1?paused=false

I like the tension between the sharp and the blurry. Sometimes one takes the lead, then the other strikes back. Like so many things in life.

New blog post: "Sharing everything I could understand about gradient noise"

https://blog.pkh.me/p/42-sharing-everything-i-could-understand-about-gradient-noise.html

I had a lot of fun making the WebGL demos, but it took me weeks of work. Boost are really appreciated if you enjoy it.

Any idea of how I could manipulate the way lights work on a ShaderGraph's shader in #unity ?

I'd like all my custom shaders to ignore the Y position of lights (since it's a top-down game).

I'd like to avoid this issue where the background texture is drawn on a tile behind all the others, but because it's farther from the point lights, it appears darker :S

I have been looking in to how to do a nice fog that spreads around the floor

#gamedev #indiegame
#coding #dev #indiedev #unreal #madewithunreal #gaming #videogames #gameplay #3d #blender3d #UnreaEngine5 #animation #shader #nature #coding

For those interested in 3D rendering techniques and frameworks, I'm very proud to inherit the reigns of Satin from the incredible Reza Ali.

I found out about Satin too late, as Reza had sunset the public repo after i had learned about it. Sadly it didnt get much traction for reasons I simply don't understand. Its incredibly well put together.

But due to some new opportunities, Reza kindly shared his internal updates - Satin Pro - and I want to help give it the community it deserves.

I'm trying to document Satin, and an ecosystem of examples, sample apps, and community at the Fabric project:

https://fabric-project.github.io

If you've seen my in progress node based VJ app 'v' - its built with Satin under the hood.

The first new addition to Satin is an attempt at a live coding environment, Velvet, allowing you to experiment with Satin rendering interactively.

That's pretty cool

I'm working on a #glsl #shader to play with arbitrary escape-time #fractals using distance estimation. The distance estimation requires a derivative, which can be computed automatically by using dual numbers.

Almost everything seems to work..
..except the inverse cosine .