layout(std430, binding=0) buffer coord3d {
	vec4 vertex[];
}  ; // No local name for this one

layout(std430, binding=1) buffer vel3d {
	vec4 velocity[];
}  ; // No local name for this one

layout(local_size_x=8) in;

void main(){
	velocity[gl_LocalInvocationID.x].y -= 0.01;
	vertex[gl_LocalInvocationID.x] += velocity[gl_LocalInvocationID.x];
	if(vertex[gl_LocalInvocationID.x].y < -5.0){
		velocity[gl_LocalInvocationID.x].y *= -1.1;
		vertex[gl_LocalInvocationID.x].y = -5;
	}
}