func (p PictureID) Paint(layer int16, pos XY) {
	renderer.command(cmdPicture, 4, 1, int16(p), layer, pos.X, pos.Y)
}
//////////////////////////////////////////////////////////////////////////////
Paint queues a GPU command to put a picture on the canvas.
package pixel
import (
	"github.com/cozely/cozely/color"
)
const (
	cmdPicture    = 1
	cmdPictureExt = 2
	cmdText       = 3
	cmdPoint      = 4
	cmdLines      = 5
	cmdTriangles  = 6
	cmdBox        = 7
)