uniform sampler2D tex;

void main()
{
	const vec3 invgamma3 = vec3(1.0 / 2.2);
	vec3 texel = texture2D(tex, gl_TexCoord[0].st).xyz;

	gl_FragColor.rgb = pow(texel, invgamma3);
	gl_FragColor.a = 1.0;
}