unsigned *virtual_width, unsigned *virtual_height) const;
void set_gl_state(GLuint glsl_program_num, const std::string &prefix, unsigned *sampler_num);
+ virtual void inform_added(EffectChain *chain) { this->chain = chain; }
enum Direction { HORIZONTAL = 0, VERTICAL = 1 };
private:
+ EffectChain *chain;
int input_width, input_height;
int input_slice_size, output_slice_size;
Direction direction;