Environment () : graphics::Drawable(),
    mPixelShader(nullptr), mVertexShader(nullptr), mProgram(nullptr), mArray(nullptr), mBatchObject(nullptr), mVState(nullptr), mSState(nullptr)
{
    sys::File _ps("data/shaders/starscape.ps", "r");
    if (!_ps)
        throw "Could not open environment pixel shader";
    sys::File _vs("data/shaders/starscape.vs", "r");
    if (!_vs)
        throw "Could not open environment vertex shader";

    string s_ps;
    _ps.getFile(s_ps);
    string s_vs;
    _vs.getFile(s_vs);

    mPixelShader = new fgl::PixelShader(s_ps.c_str());
    mVertexShader = new fgl::VertexShader(s_vs.c_str());
    mProgram = new fgl::Program(mPixelShader, mVertexShader);

    vector<fgl::vec2> verts(4);
    verts[0] = fgl::vec2(-0.5, -0.5);
    verts[1] = fgl::vec2( 0.5, -0.5);
    verts[2] = fgl::vec2( 0.5,  0.5);
    verts[3] = fgl::vec2(-0.5,  0.5);

    vector<u8> indices(6);
    indices[0] = 0;
    indices[1] = 1;
    indices[2] = 2;
    indices[3] = 2;
    indices[4] = 3;
    indices[5] = 0;

    mArray = new fgl::VertexArray(verts.data(), 4, indices.data(), 6, sizeof(fgl::vec2), fgl::VertexArray::STATIC_WRITE);

    mVState = new fgl::VertexState(mArray);
    mVState->setProgram(mProgram);
    mVState->setProperty("position", 0, 2, fgl::F32);

    mSState = new fgl::ShaderState(mProgram);

    mBatchObject = new fgl::BatchObject;
    mBatchObject->attach(mVState);
    mBatchObject->attach(mSState);
}