[require]
# Once gl_Vertex is changed to piglit_vertex, this test will work with
# GLSL ES 1.00 as well.
GLSL >= 1.10

[vertex shader]
#ifdef GL_ES
precision mediump float;
#endif

varying vec4 color;
varying float f;

void a()
{
	f = 0.5;
}

void main()
{
	gl_Position = gl_Vertex;

	f = 0.1;
	a();
	color.g = f++;
	color.rba = vec3(0.0);
}

[fragment shader]
#ifdef GL_ES
precision mediump float;
#endif

varying vec4 color;
varying float f;

void main()
{
	gl_FragColor = color;
}

[test]
clear color 0.5 0.5 0.5 0.5
clear
draw rect -1 -1 2 2
probe rgb 15 15 0.0 0.5 0.0