vec3 reflect(const vec3 &i, const vec3 &n)

{

    return i - 2.0f * dot(n, i) * n;

}

//cubeMap
glGenTextures(1, &m_TexID);

glBindTexture(GL_TEXTURE_CUBE_MAP, m_TexID);

glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_LINEAR);

glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);

glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_GENERATE_MIPMAP, GL_TRUE);

//-x
glTexImage2D(GL_TEXTURE_CUBE_MAP_NEGATIVE_X , 0, GL_RGBA8, NegX.getWidth(), NegX.getHeight(), 0, GL_RGBA, GL_UNSIGNED_BYTE, NegX.getData());
//x
glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X , 0, GL_RGBA8, PosX.getWidth(), PosX.getHeight(), 0, GL_RGBA, GL_UNSIGNED_BYTE, PosX.getData());
//y
glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_Y , 0, GL_RGBA8, PosY.getWidth(), PosY.getHeight(), 0, GL_RGBA, GL_UNSIGNED_BYTE, PosY.getData());
//-y
glTexImage2D(GL_TEXTURE_CUBE_MAP_NEGATIVE_Y , 0, GL_RGBA8, NegY.getWidth(), NegY.getHeight(), 0, GL_RGBA, GL_UNSIGNED_BYTE, NegY.getData());
//z
glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_Z , 0, GL_RGBA8, PosZ.getWidth(), PosZ.getHeight(), 0, GL_RGBA, GL_UNSIGNED_BYTE, PosZ.getData());
//-z
glTexImage2D(GL_TEXTURE_CUBE_MAP_NEGATIVE_Z , 0, GL_RGBA8, NegZ.getWidth(), NegZ.getHeight(), 0, GL_RGBA, GL_UNSIGNED_BYTE, NegZ.getData());

glBindTexture(GL_TEXTURE_CUBE_MAP, 0);