[require]
GLSL >= 1.20

[vertex shader file]
glsl-mvp.vert

[fragment shader]
#version 120
void main()
{
   const float x = fract(1.7);
   const float y = fract(6.0);
   const float z = fract(-1.7); /* should be 0.3 */
   gl_FragColor = vec4(x, y, z, 1.0);
}

[test]
clear color 0.0 0.0 0.0 0.0
clear
ortho
draw rect 10 10 10 10
probe rgb 15 15 0.7 0.0 0.3