Create a font from a file, using target resolutions (in DPI).
TTF_Font * TTF_OpenFontIndexDPI(const char *file, int ptsize, long index, unsigned int hdpi, unsigned int vdpi);| file | path to font file. |
| ptsize | point size to use for the newly-opened font. |
| index | index of the face in the font file. |
| hdpi | the target horizontal DPI. |
| vdpi | the target vertical DPI. |
Returns a valid TTF_Font, or NULL on error.
DPI scaling only applies to scalable fonts (e.g. TrueType).
Some .fon fonts will have several sizes embedded in the file, so the point size becomes the index of choosing which size. If the value is too high, the last indexed size will be the default.
Some fonts have multiple "faces" included. The index specifies which face to use from the font file. Font files with only one face should specify zero for the index.
When done with the returned TTF_Font, use TTF_CloseFont() to dispose of it.
This function is available since SDL_ttf 2.0.18.