generate method

dynamic generate([ dynamic builder, dynamic output ])

Implementation

generate([builder, output]) {
  var texture = this.value;

  if (!texture || texture.isTexture != true) {
    throw ('TextureNode: Need a three.js texture.');
  }

  var type = this.getNodeType(builder);

  var textureProperty = super.generate(builder, type);

  if (output == 'sampler2D' || output == 'texture2D') {
    return textureProperty;
  } else if (output == 'sampler') {
    return textureProperty + '_sampler';
  } else {
    var nodeData = builder.getDataFromNode(this);

    var snippet = nodeData.snippet;

    if (snippet == undefined) {
      var uvSnippet = this.uv.build(builder, 'vec2');
      var bias = this.bias;

      var biasSnippet = null;

      if (bias != null) {
        biasSnippet = bias.build(builder, 'float');
      }

      snippet = builder.getTexture(textureProperty, uvSnippet, biasSnippet);

      nodeData.snippet = snippet;
    }

    return builder.format(snippet, 'vec4', output);
  }
}