TextureCubeFace face = TextureCube::enumerate_faces(i);
faces[i].fbo.attach(COLOR_ATTACHMENT0, env_tex, face, 0);
faces[i].fbo.attach(DEPTH_ATTACHMENT, depth_buf);
TextureCubeFace face = TextureCube::enumerate_faces(i);
faces[i].fbo.attach(COLOR_ATTACHMENT0, env_tex, face, 0);
faces[i].fbo.attach(DEPTH_ATTACHMENT, depth_buf);