Mercurial > molko
diff libcore/core/texture.h @ 184:c92957c3b82b
core: add texture_set_(alpha|color)_mod functions
Apply either an alpha transparency modulation or a color on the texture.
| author | David Demelier <markand@malikania.fr> |
|---|---|
| date | Mon, 02 Nov 2020 18:35:44 +0100 |
| parents | 5d1b7d123401 |
| children | f37b8e95aaaa |
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--- a/libcore/core/texture.h Mon Nov 02 13:42:51 2020 +0100 +++ b/libcore/core/texture.h Mon Nov 02 18:35:44 2020 +0100 @@ -65,6 +65,26 @@ texture_ok(const struct texture *tex); /** + * Apply an alpha modulation (aka transparency). + * + * \pre texture_ok(tex) + * \param tex the texture + * \param alpha the alpha (0-255) + */ +bool +texture_set_alpha_mod(struct texture *tex, unsigned int alpha); + +/** + * Apply a color modulation (for every pixel). + * + * \pre texture_ok(tex) + * \param tex the texture to modify + * \param color the color + */ +bool +texture_set_color_mod(struct texture *tex, unsigned long color); + +/** * Simple texture drawing. * * \pre tex != NULL