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.
14 class ResizeEffect : public Effect {
17 std::string effect_type_id() const override { return "ResizeEffect"; }
18 std::string output_fragment_shader() override;
20 // We want processing done pre-filtering and mipmapped,
21 // in case we need to scale down a lot.
22 bool needs_texture_bounce() const override { return true; }
23 bool needs_mipmaps() const override { return true; }
24 AlphaHandling alpha_handling() const override { return INPUT_PREMULTIPLIED_ALPHA_KEEP_BLANK; }
26 bool changes_output_size() const override { return true; }
27 bool sets_virtual_output_size() const override { return false; }
28 void get_output_size(unsigned *width, unsigned *height, unsigned *virtual_width, unsigned *virtual_height) const override;
36 #endif // !defined(_MOVIT_RESIZE_EFFECT_H)