#version 140

void main(void)
{
	gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;
	int depth = int(gl_Position.z);
	if (depth > 10000 || depth < 800) {
		depth = 0;
	}
	int red = 0;
	int blue = depth % 256;
	int green = depth / 256;
	float fRed = float(red) / 256;
	float fGreen = float(green) / 256;
	float fBlue = float(blue) / 256;
	gl_FrontColor = vec4(fRed, fGreen, fBlue, 1.0);
}