Francesco Abbate
f5ede27e91
Text looks more correct without the gamma correction. With gamma correction text looks too bold in dark mode and too light in light mode. This behavior is a sign that gamma correction is not the right thing to do. The problem is seen with gamma at 1.5 used previously but is even worst if a gamma value of 2.2, the theoretical value, is used.
55 lines
1.4 KiB
C
55 lines
1.4 KiB
C
#ifndef FONT_RENDERER_H
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#define FONT_RENDERER_H
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct {
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unsigned short x0, y0, x1, y1;
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float xoff, yoff, xadvance;
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} FR_Bitmap_Glyph_Metrics;
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typedef struct FR_Bitmap FR_Bitmap;
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struct FR_Impl;
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typedef struct FR_Impl FR_Renderer;
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enum {
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FR_HINTING = 1 << 0,
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FR_KERNING = 1 << 1,
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FR_SUBPIXEL = 1 << 2,
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FR_PRESCALE_X = 1 << 3,
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};
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typedef struct {
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uint8_t r, g, b;
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} FR_Color;
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typedef struct {
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int left, top, right, bottom;
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} FR_Clip_Area;
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FR_Renderer * FR_Renderer_New(unsigned int flags);
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void FR_Renderer_Free(FR_Renderer *);
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int FR_Load_Font(FR_Renderer *, const char *filename);
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FR_Bitmap* FR_Bitmap_New(FR_Renderer *, int width, int height);
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void FR_Bitmap_Free(FR_Bitmap *image);
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int FR_Get_Font_Height(FR_Renderer *, float size);
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int FR_Bake_Font_Bitmap(FR_Renderer *, int font_height,
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FR_Bitmap *image,
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int first_char, int num_chars, FR_Bitmap_Glyph_Metrics *glyph_info);
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void FR_Blend_Glyph(FR_Renderer *font_renderer,
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FR_Clip_Area *clip, int x, int y,
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uint8_t *dst, int dst_width,
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const FR_Bitmap *glyphs_bitmap,
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const FR_Bitmap_Glyph_Metrics *glyph, FR_Color color);
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#ifdef __cplusplus
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}
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#endif
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#endif
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