#version 120
varying vec3 f_coord;
varying vec3 f_material;
uniform sampler2D nv_t_diffuse;
 
void main(void) {
	float w = f_material.x;
	float remmod  = floor( w / 16 + 0.5 );
	float modulus = w - remmod * 16;

	gl_FragColor = texture2D(nv_t_diffuse, vec2((fract(f_coord.x) + modulus ), ( fract(f_coord.z) + remmod) )  / 16.0);

//	gl_FragColor = texture2D(nv_t_diffuse, vec2((fract(f_coord.z - f_coord.x) + modulus ), ( fract(-f_coord.y) + remmod) )  / 16.0);
}