It seems you're missing a ; at the end of the line just above, according to the error!

Hello! On my computer it works as expected with the latest official and experimental (I'm on windows 10/geforce 2080TI, though I remember it worked for people with MacOS as well), the result does indeed appear white at the beginning but after a few seconds it should start showing the animated rainbow pattern. It's a bit of a quirky shader! Feel free to share screen captures/recordings on the derivative forum post forum.derivative.ca/t/introduction-to-glsl-in-touchdesigner-2019-11-01-08-32/111305/14

Thanks!

Hi! No this is older and before I got into TD, it was made in Houdini.

Did you try the provided files? Do they work for you? They're here derivative.ca/community-post/tutorial/introduction-glsl-touchdesigner - Otherwise it probably means you have an extra ; the error should tell you which line in the code

@@VincentHouze Thank you! Another question-What does one do when there are more than 1 buffer and code in Image and so on? :)

It would be pretty similar, instead of sampling the chop with texelFetch(chopSampler, int) you would sample the TOP with texelFetch(2DSampler, ivec2(coords), 0). You can create 2d coordinates using the instance number, same as in the last part of the workshop how I render the points x : TDInstanceId()%textureWidth and y: TDInstanceID()/textureWidth

Or maybe just this last example with lifetime and velocity, without the fluid thing. That would be awesome, Vincent.

@@0Budgetprod Added the example I'm showing at the end in the download at derivative.ca/community-post/tutorial/introduction-glsl-touchdesigner

Eight months late to your question but in case someone has the same issue in the future. I'm SUPER new to TouchDesigner and I forgot to turn on display and render for datto1 (DAT to inside geo1) and had the same issue. Struggled for a while before figuring it out.

OpenGL Shading Language (GLSL), is a high-level shading language with a syntax based on the C programming language. It was created by the OpenGL ARB (OpenGL Architecture Review Board) to give developers more direct control of the graphics pipeline without having to use ARB assembly language or hardware-specific languages. (from wikipedia)

Added the example I'm showing at the end in the download at derivative.ca/community-post/tutorial/introduction-glsl-touchdesigner

Hello, sorry the filming is sometimes showing the wrong thing (I think the blackboard makes some appearance later in the series), hopefully you can still understand!

tried that , could not really do what I wanted still, maybe with time, still miles away from the usual drag dropping TD simplicity. I dream of a glsl operator snippets.

Ha yes I thought it would be exclusive to the people who attended the paying workshop, it's very close from github.com/kamindustries/touchFluid or github.com/ancillarymagnet/touchfluids, might as well share it in a bit :)

Hello! This 3 tutorials mini series is from 2015 and pretty outdated, it refers to an older version of TD. Please check the 8 video playlist (Introduction to GLSL...) I posted recently if you're interested!

great! @@VincentHouze

I noticed the camera work wasn't ideal ;) file is already available, it's in the description of the first video of the series : drive.google.com/open?id=1OvdpSx8I1DdGtBI-fQQ8HGDA8ctWTFlI

Ok great, shit sorry , I shoud open my eyes a bit more. great example, quite clear, thx for teaching us. I just heard on chat about Touchdesigner that now even with demo version u can use c++... I was never able to run the cool stuff about physics you shared on Github, the good news is; we cannot stop progress! it should work now.

Hello, it's still on my github if you want to take a look - haven't touched it in years though! github.com/vinz9/vstvisframework

Hello, this is an experimental custom VST plugin - since then I've turned to using TouchDesigner, but it's still on github if you're curious, more info here www.foliativ.net/visualisation-framework-vst/

Merci monsieur. Very nice work. You should really consider making some art for the Image-Line's vst visualizer for ZGameEditor. I understood the company is capitalizing more and more on this part of their digital audio workstation (FL Studio 12.9). Plus, this visualisation host plugin seems to be used more and more for the past years, in most famous events like boiler rooms and stuff. And its potential has clearly not been fully developed yet. V13 of FLStudio is coming shortly, and the Belgian developing team is really easy to get in touch with; get your piece of this cake ;) .

Thanks and thanks for the tips! will check out ZGameEditor in more detail, luckily there are many cakes to get pieces of ;)

Good good good ! Can't wait to maybe see Vincent Houzé's Layers in my favorite visualization plugin :) . Check out the "buffer blender layer" and "import meshes option" in ZGEv, the possibilities are so numerous it's amazing.

Thank you!

Hey Nate, this was before I really go into real-time and was made with Houdini!

Thanks! It's fairly old now, more info and downloads here www.foliativ.net/cuda-fluid-and-particles-plugins/

+azuria sky I started a tutorial series too though it's very beginner oriented kzfaq.info/sun/PL5zzMHjnPWS2Vn1x9_lApTqwEJgK5AUi2 but there are other tutorials available by other people

+azuria sky Thanks! yes it's Touch