[require]
GLSL >= 1.10

[vertex shader]
uniform vec4 arg0;
varying mat3 mat;

void main()
{
	gl_Position = gl_Vertex;

	mat3 m1 = mat3(arg0.x,    arg0.y, 0.0,
		       arg0.z,    arg0.x, 0.0,
		       0.0,       0.0,    arg0.w);
	mat3 m2 = mat3(arg0.x);

	mat = m1 - m2;
}

[fragment shader]
uniform vec3 arg1;
varying mat3 mat;

void main()
{
	gl_FragColor = vec4(mat * arg1.xyz, 0.0);
}

[test]
uniform vec4 arg0 -2.0 1.0 -1.0 1.0
uniform vec3 arg1 1.0 0.0 0.3
draw rect -1 -1 2 2
probe rgba 1 1 0.0 1.0 0.9 0.0