Function colorSyntaxTest

test/features/read-color-texture.js:6–151

(mode)

describe('features: read color texture');

function colorSyntaxTest(mode) {
  const gpu = new GPU({ mode });
  const createTexture = gpu.createKernel(
    function(value) {
      this.color(
        value[this.thread.y][this.thread.x],
        value[this.thread.y][this.thread.x],
        value[this.thread.y][this.thread.x],
        value[this.thread.y][this.thread.x]
      );
    }
  )
    .setOutput([4, 4])
    .setGraphical(true)
    .setPipeline(true);

  const readRTexture = gpu.createKernel(
    function(texture) {
      const pixel = texture[this.thread.y][this.thread.x];
      return pixel.r;
    }
  )
    .setOutput([4, 4]);

  const readGTexture = gpu.createKernel(
    function(texture) {
      const pixel = texture[this.thread.y][this.thread.x];
      return pixel.g;
    }
  )
    .setOutput([4, 4]);

  const readBTexture = gpu.createKernel(
    function(texture) {
      const pixel = texture[this.thread.y][this.thread.x];
      return pixel.b;
    }
  )
    .setOutput([4, 4]);

  const readATexture = gpu.createKernel(
    function(texture) {
      const pixel = texture[this.thread.y][this.thread.x];
      return pixel.a;
    }
  )
    .setOutput([4, 4]);

  const texture = createTexture([
    [.01,.02,.03,.04],
    [.05,.06,.07,.08],
    [.09,.10,.11,.12],
    [.13,.14,.15,.16]
  ]);
  const resultR = readRTexture(texture);
  const resultG = readGTexture(texture);
  const resultB = readBTexture(texture);
  const resultA = readATexture(texture);