+ Mixer::Output output;
+ GLuint vao, program_num;
+ GLuint position_vbo, texcoord_vbo;
+ movit::ResourcePool *resource_pool = nullptr;
+ int current_width = 1, current_height = 1;
+ bool should_grab = false;
+ unsigned grab_x, grab_y;
+ Mixer::Output grab_output; // Should nominally be the same as output.