Function testFilterShader

test/unit/webgl/p5.RendererGL.js:306–318

(target)

    suite('custom shaders', function() {
      function testFilterShader(target) {
        const fragSrc = `precision highp float;
        void main() {
          gl_FragColor = vec4(1.0, 1.0, 0.0, 1.0);
        }`;
        const s = target.createFilterShader(fragSrc);
        target.filter(s);
        target.loadPixels();
        assert.deepEqual(
          target.get(target.width/2, target.height/2),
          [255, 255, 0, 255]
        );
      }

      test('work with a 2D main canvas', function() {
        myp5.createCanvas(10, 10);