Conflict between loadShader() and p5 reference?

marcela · March 10, 2021, 5:34pm

Hi everyone!

I am trying to have a callback function triggered by a shader loading, but there seems to be something wrong. This is the suggested syntax in the reference:

loadShader(vertFilename, fragFilename, [callback], [errorCallback])

but when I try to add any extra arguments, I get this error:

> p5.js says: loadShader() was expecting no more than 2 arguments, but received 3.[https://github.com/processing/p5.js/wiki/Local-server]

Any clues to what’s going on?

I also haven’t found any examples or tests in the source code that use that callback function, which makes me think it might not have been tested a lot.

Thanks,
M

micuat · March 10, 2021, 7:00pm

It does seem to be implemented

github.com

processing/p5.js/blob/main/src/webgl/material.js

/**
 * @module Lights, Camera
 * @submodule Material
 * @for p5
 * @requires core
 */

import p5 from '../core/main';
import * as constants from '../core/constants';
import './p5.Texture';

/**
 * Loads a custom shader from the provided vertex and fragment
 * shader paths. The shader files are loaded asynchronously in the
 * background, so this method should be used in <a href="#/p5/preload">preload()</a>.
 *
 * For now, there are three main types of shaders. p5 will automatically
 * supply appropriate vertices, normals, colors, and lighting attributes
 * if the parameters defined in the shader match the names.
 *

This file has been truncated. show original

but I haven’t tested it. Did you try with the latest p5.js?

marcela · March 11, 2021, 12:11pm

I didn’t
Thank you!

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Conflict between loadShader() and p5 reference?

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