MeshAssembler.java 文件源码

public VertexAttribute[] getVertexAttributes() {
  if (attributes == null){
    this.attributes = new ArrayList<VertexAttribute>();
  }
  this.attributes.clear();

  if (isUsing(MeshVertexData.AttributeType.Position)) {
    attributes.add(new VertexAttribute(VertexAttributes.Usage.Position, 3, ShaderProgram.POSITION_ATTRIBUTE));
  }

  if (isUsing(MeshVertexData.AttributeType.Normal)) {
    attributes.add(new VertexAttribute(VertexAttributes.Usage.Normal, 3, ShaderProgram.NORMAL_ATTRIBUTE));
  }

  if (isUsing(MeshVertexData.AttributeType.TextureCord)) {
    attributes.add(new VertexAttribute(VertexAttributes.Usage.TextureCoordinates, 2, ShaderProgram.TEXCOORD_ATTRIBUTE+ "0"));
  }

  if (isUsing(MeshVertexData.AttributeType.Color)) {
    attributes.add(new VertexAttribute(VertexAttributes.Usage.ColorPacked, 4, ShaderProgram.COLOR_ATTRIBUTE));
  }

  return attributes.toArray(new VertexAttribute[attributes.size()]);
}