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Implement optional font rendering options

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The user can now choose antialiasing grayscale and subpixel and hinting
non, slight or full.
This commit is contained in:
Francesco Abbate
2020-12-04 16:15:54 +01:00
parent 549ac806e9
commit afda299fe4
4 changed files with 73 additions and 5 deletions
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src/renderer.c
+11 -2
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@@ -141,14 +141,23 @@ static GlyphSet* get_glyphset(RenFont *font, int codepoint) {
}
RenFont* ren_load_font(const char *filename, float size) {
RenFont* ren_load_font(const char *filename, float size, unsigned int renderer_flags) {
RenFont *font = NULL;
/* init font */
font = check_alloc(calloc(1, sizeof(RenFont)));
font->size = size;
font->renderer = FR_Renderer_New(FR_HINTING | FR_SUBPIXEL | FR_PRESCALE_X);
unsigned int fr_renderer_flags = 0;
if ((renderer_flags & RenFontAntialiasingMask) == RenFontSubpixel) {
fr_renderer_flags |= FR_SUBPIXEL;
}
if ((renderer_flags & RenFontHintingMask) == RenFontHintingSlight) {
fr_renderer_flags |= (FR_HINTING | FR_PRESCALE_X);
} else if ((renderer_flags & RenFontHintingMask) == RenFontHintingFull) {
fr_renderer_flags |= FR_HINTING;
}
font->renderer = FR_Renderer_New(fr_renderer_flags);
if (FR_Load_Font(font->renderer, filename)) {
free(font);
return NULL;