Andro

Hi everyone, working with jit.gl.pix again (its been a while), converting shadertoy to jit.gl.pix is throwing me an error I can't figure out.

I just pasted the code as the rest of my patch is pretty messy right now.

uvR.x = uv.x * 1.0 - rand(iTime) * 0.02 * 0.8; // -- INVALID LEFT HAND EXPRESSION !

Why can't I just cast uvR.x to another number ??

return fract(sin(iTime)*10000);//normally * 1e4

uvB.y = uv.y * 1.0 + rand(iTime) * 0.02 * 0.8; // -- INVALID LEFT HAND EXPRESSION !

Param iMouse (0,0);// mouse position in pixels

Hi everyone, working with jit.gl.pix again (its been a while), converting shadertoy to jit.gl.pix is throwing me an error I can't figure out.
I just pasted the code as the rest of my patch is pretty messy right now.
The problem seems to be :
uvR.x = uv.x * 1.0 - rand(iTime) * 0.02 * 0.8;   // -- INVALID LEFT HAND EXPRESSION !

Why can't I just cast uvR.x to another number ??
Any and all help appreciated !

// random float generator
rand (iTime) {
    return fract(sin(iTime)*10000);//normally * 1e4
}

 mainImage (in1 , iTime ) {
    uv = norm;

    uvR.x = uv.x * 1.0 - rand(iTime) * 0.02 * 0.8;   // -- INVALID LEFT HAND EXPRESSION !
    uvB.y = uv.y * 1.0 + rand(iTime) * 0.02 * 0.8;  // -- INVALID LEFT HAND EXPRESSION !

	}
//do not delete these params !
Param iTime (0.);//incoming timer
Param iMouse (0,0);// mouse position in pixels
Param someMod (0.0);

jit-gl-pix-codebox-invalid-left-hand-expression-simple-problem

AFAIK you can't do that in gl.pix. You will have to do something like:

uvR.x = uv.x * 1.0 – rand(iTime) * 0.02 * 0.8; // — INVALID LEFT HAND EXPRESSION !

uvR = vec(uv.x * 1.0 – rand(iTime) * 0.02 * 0.8, uvR.y, uvR.z);

uvR  = vec(uv.x * 1.0 – rand(iTime) * 0.02 * 0.8,  uvR.y,  uvR.z);


Hi Ullrich, thank you so much ! That worked like a charm :)

jit.gl.pix codebox invalid left-hand expression (simple problem)