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vec4 evalLightmap( in sampler2D sampler, in vec3 inCoords, in vec4 rotScale, in vec3 offset )
{
    vec3 uTransform = vec3(rotScale.x, rotScale.y, offset.x);
    vec3 vTransform = vec3(rotScale.z, rotScale.w, offset.y);

    vec2 transfCoord = vec2( dot( uTransform, inCoords ), dot( vTransform, inCoords ) );

    vec4 value = texture( sampler, transfCoord.xy);

    return value;
}

vec4 evalIndirectLightmap( in sampler2D sampler, in vec3 inCoords, in vec4 rotScale, in vec3 offset )
{
    return evalLightmap( sampler, inCoords, rotScale, offset );
}

vec4 evalRadiosityLightmap( in sampler2D sampler, in vec3 inCoords, in vec4 rotScale, in vec3 offset )
{
    return evalLightmap( sampler, inCoords, rotScale, offset );
}

vec4 evalShadowLightmap( in sampler2D sampler, in vec3 inCoords, in vec4 rotScale, in vec3 offset )
{
    return evalLightmap( sampler, inCoords, rotScale, offset );
}