1 #ifndef _MOVIT_RESIZE_EFFECT_H
2 #define _MOVIT_RESIZE_EFFECT_H 1
4 // An effect that simply resizes the picture to a given output size
5 // (set by the two integer parameters "width" and "height").
6 // Mostly useful as part of other algorithms.
12 class ResizeEffect : public Effect {
15 virtual std::string effect_type_id() const { return "ResizeEffect"; }
16 std::string output_fragment_shader();
18 // We want processing done pre-filtering and mipmapped,
19 // in case we need to scale down a lot.
20 virtual bool need_texture_bounce() const { return true; }
21 virtual bool needs_mipmaps() const { return true; }
22 virtual AlphaHandling alpha_handling() const { return INPUT_PREMULTIPLIED_ALPHA_KEEP_BLANK; }
24 virtual bool changes_output_size() const { return true; }
25 virtual void get_output_size(unsigned *width, unsigned *height, unsigned *virtual_width, unsigned *virtual_height) const;
31 #endif // !defined(_MOVIT_RESIZE_EFFECT_H)