PImage txtr;
PShape shp;

void setup() {
  size(512, 256, P3D);
  txtr = loadImage("txtr.png");
  shp = createShape(BOX, 128);
  shp.setStroke(0);
  shp.setTexture(txtr);
  shp.translate(384, 128, 0);
}

void draw() {
  background(0xff007fff);
  image(txtr, 0, 0, 256, 256);
  shape(shp);
}