code: func (c *Canvas) MakeTriangles(t pixel.Triangles) pixel.TargetTriangles {
  	return &canvasTriangles{
  		GLTriangles: NewGLTriangles(c.shader.s, t),
  		dst:         c,
  	}
  }
docs: // MakeTriangles creates a specialized copy of the supplied Triangles that draws onto this Canvas.
  //
  // TrianglesPosition, TrianglesColor and TrianglesPicture are supported.