GLuint texnum;
int input_width, input_height, output_width, output_height;
int last_input_width, last_input_height, last_output_width, last_output_height;
GLuint texnum;
int input_width, input_height, output_width, output_height;
int last_input_width, last_input_height, last_output_width, last_output_height;