layout(vertices=3) out;
in vec4 fca[];
out vec4 fct[];
uniform mat4 mvp;

void main(){
	int tesslv = 1;
	if((mvp * gl_in[gl_InvocationID].gl_Position).z < 10){
		tesslv = 7;
	}
	gl_TessLevelOuter[0] = tesslv;
	gl_TessLevelOuter[1] = tesslv;
	gl_TessLevelOuter[2] = tesslv;
	gl_TessLevelInner[0] = tesslv;
	gl_out[gl_InvocationID].gl_Position = gl_in[gl_InvocationID].gl_Position; // Possible to use synchronization
	fct[gl_InvocationID] = fca[gl_InvocationID];
}