Creates a graphics shader that can paint an image on a 3D object.
Opacity
— The opacity of the 3D object. Ranges from 0 (fully transparent) to 1 (fully opaque).The image is stretched across the vertices of the 3D object. Unless the vertices form a rectangle whose aspect ratio matches the image’s, the image will be deformed.
This shader ignores lighting.
Keywords: draw, glsl, graphics, opengl, paint, scenegraph, texture