Set sprite overflow flag if we completely consume sprite rendering capacity for the line even if there is nothing left to draw. This graphical corruption in the vertical stretching scroll section. Needs hardware confirmation.

#version 110

attribute vec2 pos;
varying vec2 texcoord;
uniform float width;

void main()
{
	gl_Position = vec4(pos, 0.0, 1.0);
	texcoord = sign(pos) * vec2(width/1024.0, 240.0/-512.0) + vec2(width/1024.0, 240.0/512.0);
}