+ Vector3 fixed_position;
+ bool use_fixed_pos = false;
+
+ TextureCube irradiance;
+ const Program &irradiance_shprog;
+ Framebuffer irradiance_fbo;
+ const Program &specular_shprog;
+ std::vector<Framebuffer> specular_fbos;
+ ProgramData prefilter_shdata;
+ const Mesh &fullscreen_mesh;
+