oh, hi! i haven't been on here in a while and just saw this discussion 🙂 i have a bit of experience in glsl, originally for live art projects and the last many years for 2d image processing in webgl. it's really not too tough to play around with in that context. it's on my to-do list to port my react.js components for hotswapping shaders to Om.Next so hopefully will get to that early next year

here's the javascript version if you want to take a look: https://github.com/Sophia-Gold/WebGL-Convolution-Shaders

currently the easiest way to import glsl is as string literals (requires es6). you can see all the ones i use in that demo in this file: https://github.com/Sophia-Gold/WebGL-Convolution-Shaders/blob/master/convolution.glsl.js

these are all really simple ones in that they're all one-pass, i.e. no VBOs

@sophiago: oh awesome! 😄

Theres this thing called 'gamma'

A clj lib

That compiles sexps to glsl 😮

But also i think w/ regl.party and watching for a new spec you can hotswap shaders pretty well it seems like

But om.next hotswapping sounds p cool

oh, i think i took a look at gamma a while back!

i was thinking of writing cljs wrappers for glsl, but now probably not

regl.party seems more along the lines of three.js, no?

as in a real 3d library?

Nah its just a quick way to do webgl without calling the gl funcs

The basic example will immediately make sense if u check it out! On phone so hard to link haha 😅

http://regl.party/examples here

As u can see it just says the geom in the buffers and the shaders

Declaratively

Instead of creatShader shaderSource etc

it's quite a higher level of abstraction i think. webgl is based on opengles, not the desktop version. so 3d stuff like that is quite a lot of work

Mm no it actually is just straight webgl api

Yeah opengles just does buffers and shaders

Its similar to the core profile desktop api

But yeah diff from the oldskool glBegin stuff

The 3d happens because of the transform in the shader

oh i guess they're just importing models in some? and have fairly complex shaders going on?

Yeah the model is require('bunny')

Lolol

3d transform comes from gl-mat

Theyre using libraries i gueds

*guess

But regl itself is fairly low-level for sure

Its equivalent to the gles api but in object form rather than stateful list of procedural function calls

well, it's not that tough to sync event loops and such. more what's difficult is just drawing anything in 3d of significant complexity

i mostly use it as a rasterization api

Oh yeah was looking at the blur convolution

i think there's a lot of potential to accelerate just regular 2d graphics

Definitely, and thats what im into too

yeah, a nice gaussian blur is really impossible to do in the browser

on the cpu i mean

I think 3d is just a choice in the shader, ultimately its a 2d view

it slows things down unbearably

Yeah

I was implementing webgl in c++ to use in react native

Which is why been doing this lately

gl-react is nice to do convolutions in a component if you've seen it

https://gl-react-cookbook.surge.sh

We're trying to get it to run on react-native 😅

Live art is cool -- was it like at a bar / club over some music

My roommate is trying to do that atm w quil

nah, i actually wasn't doing much live performance. but really into max/msp and generative art so nothing was rendered ahead of time

that's when i learned glsl

😮

Cool max/msp!

yeah i remember them having a clojure object and being like, "clojure...lol what's that?"

Hahaha

that was in like 2009

Nice!!

Thats p awesome, have u been doing clojure since

Im rly new to clj

not that long actually. but i knew scheme for quite a while before

Mostly the gfx ive done is c/cpp and recently doing a bunch of js / objc / java for work cuz rn

Oh i see yeah like racket?

not racket

i use guile these days

O cool

Guile's website is nice

it's pretty bare bones

Speaking if live gfx do u wanna see this thing i made once 😮

sure

https://youtu.be/4LV8jJMeuRA

Its like live lua coding of a c engine but u can grab and edit objs visually

Its for games i guess

I rly rly wanna redo in cljs

Cljs is so much better suited for this sort of thing by like 4x

cool, sprites!

Wheee

i wrote a little sprite library for js i used a whole bunch

https://github.com/Sophia-Gold/spriteAnimation.js

i made it to interactively timewarp videos...this turned out to be the best solution. so it can handle pretty large spritesheets (.5-3mb jpegs usually) at 30fps

i couldn't do infinite scroll or anything, but at least three to a page running at that size

and displaying in 720 resolution usually

oic -- the canvas api for drawing?

i've never actually used it haha

btw what did / do you use guile for? curious about that

it seems like has really quick bindings for C

oh i never used scheme for any production code. just prototyping algorithms and playing with interpreters and such

you should look into canvas if you're doing any web graphics

just the 2d api is gpu accellerated

oh -- i like directly writing shaders haha but i'll check it out

i'm doing the cljs / js stuff in the context of rn so canvas isn't available

ah i see

you might think this is cool

http://iquilezles.org/www/material/nvscene2008/nvscene2008.htm

it's a diff way of rendering 3d

that involves no transformations

it just evaluates a distance function that describes a smooth surface :thinking_face:

pretty nifty

oh wow

yeah you can do really weird stuff like twisting and repeating things to infinity and all this stuff

cuz of the math

it's nice for 'live art' type stuff looks like

I'm working through the "living clojure" book atm

haven't heard of that

it's really nice!

the author had a podcast interview which made me wanna check it out

cool

http://hanselminutes.com/464/living-clojure-with-carin-meier

i'm exhausted and at least need to finish speccing up this project i've been trying to push a commit on today 😕

haha cool! i'm probs gonna be on this slack for a bit to ask cljs qs whenever i get stuck on this book

loving this community

yeah it's great. everyone is very helpful

Indeed, this is the nicest community I have ever seen

😄