12 std::shared_ptr<Texture2d>
white;
13 std::shared_ptr<Texture2d>
black;
std::string pp_extract_frag_glsl
std::string pp_realize_frag_glsl
ShaderSource skybox_shader_source
ShaderSource default_shader_source
std::shared_ptr< Texture2d > white
std::shared_ptr< Texture2d > black
std::string pp_ping_pong_blur_frag_glsl