I'll just leave this here...

[Dan Korneff]

sick!! Gonna use this to add some Easter Eggs to my plugins

[Christoph Hart]

@UrsBollhalder It's all laid out in the docs:

1. Load a shader file.
2. Render it in the paint routine of a scriptpanel.

A example snippet is not very helpful because it requires the shader file to be in the script repo. I have added the ability of using base64 encoded strings, but it's not the most transparent way to learn how to use shaders in HISE.

Make sure to enable OpenGL in HISE (it's not the plugin OpenGL flag but a new one inside the Development settings).

[d.healey]

@Christoph-Hart Should we be migrating to the codegen_rewrite branch now or sticking with scriptnode?

[Christoph Hart]

Yes it's now at a point where people can test drive the new stuff - but I wouldn't use it in a real project at the moment.

BTW the editor used for the GLSL code will be the new default code editor (I'm holding off with replacing the old code editor for HiseScript until all kinks are sorted out), so any feedback about quirks when editing GLSL code are welcome - there are still many small bugs, it's rather difficult to create a code editor almost from scratch...

[A Former User]

@Christoph-Hart That makes sense. I’ll give it a go tonight...

[A Former User]

@Christoph-Hart So... I am obviously missing something...
The shader.glsl script sits in the right column under my onControl Callback and in the script folder... OpenGL is enabled in the Settings, flag set for plugin (if needed)...

Content.makeFrontInterface(600, 500);

const var pnlShader = Content.getComponent("pnlShader");

const var shader = Content.createShader("shader");

//shader.setBlendFunc(true, shader.GL_ONE, shader.GL_ONE);


pnlShader.setPaintRoutine(function(g)
{
	g.applyShader("shader", [0, 0, this.getWidth(), this.getHeight()]);
    
});

[Christoph Hart]

Are there any compile errors in the console? What's the shader code?

[A Former User]

@Christoph-Hart It compiles without errors and the shader code is the example code in the docs:

void main() // must be named `main()` without parameters
{
    // Normalized pixel coordinates (from 0 to 1)
    vec2 uv = fragCoord/iResolution.xy;

    // Time varying pixel color
    vec3 col = 0.5 + 0.5*cos(iTime+uv.xyx+vec3(0,2,4));

    // Output to screen
    fragColor = pixelAlpha * vec4(col,1.0);
}

[Christoph Hart]

Are you on Windows or mac?

This shader stuff is beyond awesome. Check out this 3D keyboard prototype:

[A Former User]

@Christoph-Hart Ok. This is killing me!!! Why doesn't it work on my system! You have to drop me a bone I can gnaw on a bit at least... Do you have any idea why it isn't working? Beacuse this looks just crazy awesome!! And on a scale of 1 to 10, how unwise is it to start working on the codegen rewrite branch if I plan to release a plugin by the end of the year?

[Christoph Hart]

I haven‘t tested it on macOS yet, so maybe something‘s off there. I‘ll take a look later this day.

And yes you can definitely use the latest branch for a project that will be published in a few months - this branch is likely to be the master branch by then. Its just risky to switch an existing project to the newest branch (especially if you‘re using the old scriptnode stuff).

[A Former User]

@Christoph-Hart Hey Christoph. Awesome. Thank you! Well, no scriptnode so far. It’s on the to-do list. I was busy working on a granular processor and an Euclidean Sequencer... so... I might just risk it...

[Christoph Hart]

Please check again, I noticed that Intel HD graphic cards do not support the #line directive, so I deactivated this.

[A Former User]

@Christoph-Hart No luck so far... I was already getting excited!

[Christoph Hart]

I added a getOpenGLStatistics method to the shader class - it needs to render the shader once before it returns something useful though, so you need to add it after the applyShader function in the paint routine (and the script panel needs to be visible on the screen):

g.applyShader(shader, [0, 0, this.getWidth(), this.getHeight()]);
Console.print(shader.getOpenGLStatistics()));

Can you post the output, maybe this will give a glue.

[A Former User]

@Christoph-Hart said in I'll just leave this here...:

I added a getOpenGLStatistics method to the shader class - it needs to render the shader once before it returns something useful though, so you need to add it after the applyShader function in the paint routine (and the script panel needs to be visible on the screen):

g.applyShader(shader, [0, 0, this.getWidth(), this.getHeight()]);
Console.print(shader.getOpenGLStatistics()));

Can you post the output, maybe this will give a glue.

I put the getOpenGLStatistics after the applyShader line as instructed.

Now. The output seems to be a bit inconsistent... I get this normally:

then occasionally, after hitting compile a few more times, I do get the following:

[lalalandsynth]

hmm, can anyone explain what this is ? How can I make graphics using this ?

[A Former User]

@lalalandsynth Have a look at the Art of Code YouTube channel... link in docs! It’s not yet working on my system but that channel shows off some impressive stuff you can make with shader code!

[Christoph Hart]

Ah that gl_fc stuff is helpful - I had it myself on macOS. I‘ll push a fix in a few hours...

[A Former User]

@Christoph-Hart 🥳🥳🥳