uniform Colors
{
	vec4 top_left;
	vec4 top_right;
	vec4 bottom_left;
	vec4 bottom_right;
};

#pragma MSP stage(vertex)
layout(location=0) in vec4 position;
void main()
{
	gl_Position = position;
	passthrough;
}

#pragma MSP stage(fragment)
layout(location=0) out vec4 frag_color;
void main()
{
	frag_color = (position.x>0 ? position.y>0 ? top_right : bottom_right :
		position.y>0 ? top_left : bottom_left);
}

/* Expected output: vertex
layout(location=0) in vec4 position;
layout(location=0) out vec4 _vs_out_position;
void main()
{
	gl_Position = position;
	_vs_out_position = position;
}
*/

/* Expected output: fragment
layout(binding=23) uniform Colors
{
	vec4 top_left;
	vec4 top_right;
	vec4 bottom_left;
	vec4 bottom_right;
};
layout(location=0) out vec4 frag_color;
layout(location=0) in vec4 _vs_out_position;
void main()
{
	frag_color = _vs_out_position.x>0.0?(_vs_out_position.y>0.0?top_right:bottom_right):_vs_out_position.y>0.0?top_left:bottom_left;
}
*/