// You may not change it after calling finalize(), since that could change the
// graph (need_linear_light() etc. depend on the border color you choose).
-#include <GL/glew.h>
+#include <epoxy/gl.h>
#include <string>
#include "effect.h"
virtual AlphaHandling alpha_handling() const;
virtual bool changes_output_size() const { return true; }
+ virtual bool sets_virtual_output_size() const { return false; }
+ virtual bool one_to_one_sampling() const { return true; }
virtual void get_output_size(unsigned *width, unsigned *height, unsigned *virtual_width, unsigned *virtual_height) const;
virtual void inform_input_size(unsigned input_num, unsigned width, unsigned height);