[require]
GLSL >= 1.20

[vertex shader file]
glsl-mvp.vert

[fragment shader]
/* This test requires version 1.20 because it depends on the new constant
 * expression rules added in 1.20.
 */
#version 120

/* All references to bad_constant_folding should be optimized away at compile
 * time.  If not, link errors will be generated, and the test will fail.
 */
void bad_constant_folding();

uniform float val;

void main()
{
	gl_FragColor = vec4(1.0, 0.0, 0.0, 0.0);

	if (false)
		bad_constant_folding();
	else if (degrees(0.0) != 0.0)
		bad_constant_folding();
	else if (radians(0.0) != 0.0)
		bad_constant_folding();
	else if (sqrt(0.0) != 0.0)
		bad_constant_folding();
	else if (sqrt(1.0) != 1.0)
		bad_constant_folding();
	else if (inversesqrt(1.0) != 1.0)
		bad_constant_folding();
	else if (exp(0.0) != 1.0)
		bad_constant_folding();
	else if (exp(1.0) <= 2.718)
		bad_constant_folding();
	else if (exp(1.0) >= 2.719)
		bad_constant_folding();
	else if (exp2(0.0) != 1.0)
		bad_constant_folding();
	else if (exp2(1.0) != 2.0)
		bad_constant_folding();
	else if (tan(0.0) != 0.0)
		bad_constant_folding();
	else if (log(1.0) != 0.0)
		bad_constant_folding();
	else if (log2(1.0) != 0.0)
		bad_constant_folding();
	else if (sin(0.0) != 0.0)
		bad_constant_folding();
	else if (cos(0.0) != 1.0)
		bad_constant_folding();
	else if (tan(0.0) != 0.0)
		bad_constant_folding();
	else if (asin(0.0) != 0.0)
		bad_constant_folding();
	else if (acos(1.0) != 0.0)
		bad_constant_folding();
	else if (atan(0.0) != 0.0)
		bad_constant_folding();
	else if (atan(1.0) <= (3.1415 / 4.0))
		bad_constant_folding();
	else if (atan(1.0) >= (3.1416 / 4.0))
		bad_constant_folding();
	else if (abs(1.0) != 1.0)
		bad_constant_folding();
	else if (abs(-1.0) != 1.0)
		bad_constant_folding();
	else if (sign(42.0) != 1.0)
		bad_constant_folding();
	else if (sign(-42.0) != -1.0)
		bad_constant_folding();
	else if (sign(0.0) != 0.0)
		bad_constant_folding();
#if 0
	/* The GLSL spec doesn't actually require that these be considered
	 * constant expressions, but any sensible implementation should
	 * evaluate them as constants and remove the calls to
	 * bad_constant_folding.
	 */
	else if (pow(val, 0.0) != 1.0)
		bad_constant_folding();
	else if (pow(1.0, val) != 1.0)
		bad_constant_folding();
#endif
	else
		gl_FragColor = vec4(0.0, 1.0, 0.0, 0.0);
}

[test]
clear color 0.3 0.3 0.3 0.0
clear
ortho
draw rect 10 10 10 10
probe rgb 15 15 0.0 1.0 0.0