9 gl_Position = gl_Vertex;
17 /* The interpolated x at the pixels next to the window bounds will
18 * be just > 0.0 or < 1.0 by 1/width. Correct for that.
20 float adjusted_x = x * (1.0 + 1.0 / 256.0);
21 gl_FragColor = vec4(asin(adjusted_x) / 3.1415926 + 0.5);
26 relative probe rgba (0.0, 0.5) (0.0, 0.0, 0.0, 0.0)
27 relative probe rgba (0.1464, 0.5) (0.25, 0.25, 0.25, 0.25)
28 relative probe rgba (0.5, 0.5) (0.5, 0.5, 0.5, 0.5)
29 relative probe rgba (0.8535, 0.5) (0.75, 0.75, 0.75, 0.75)
30 relative probe rgba (1.0, 0.5) (1.0, 1.0, 1.0, 1.0)