#vertex

void main() {
    gl_TexCoord[0] = gl_MultiTexCoord0;
    gl_Position = ftransform();
}

#fragment

uniform sampler2D tex;

void main() {
    vec4 c = texture2D(tex, vec2(gl_TexCoord[0]));
    c *= c;
    gl_FragColor = c * c;
}