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Add more debug information in font's bitmap images

This commit is contained in:
Francesco Abbate 2020-06-07 00:15:38 +02:00
parent b978873a58
commit e82d766c2b
3 changed files with 22 additions and 0 deletions
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3
lib/font_renderer/font_renderer.cpp
View File

@ -208,6 +208,9 @@ int FontRendererBakeFontBitmap(FontRenderer *font_renderer, int font_height,
glyph_info.yoff = -pad_y;
glyph_info.xadvance = (x_next - x) / subpixel_scale;
#ifdef FONT_RENDERER_DEBUG
glyph_info.ybaseline = pixels_height - 1 - y_baseline;
#endif
if (glyph_info.x1 > glyph_info.x0) {
glyph_lut_convolution(ren_buf, lcd_lut, cover_swap_buffer, glyph_info);
}

3
lib/font_renderer/font_renderer.h
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@ -11,6 +11,9 @@ extern "C" {
typedef struct {
unsigned short x0, y0, x1, y1;
float xoff, yoff, xadvance;
#ifdef FONT_RENDERER_DEBUG
int ybaseline;
#endif
} GlyphBitmapInfo;
struct FontRendererImpl;

16
src/renderer.c
View File

@ -152,6 +152,22 @@ void debug_bitmap_draw_rect(RenImage *image, GlyphBitmapInfo *glyph) {
c[y * w].g = c[y * w].g >> 1;
c[y * w].b = c[y * w].b >> 1;
}
c = image->pixels + glyph->ybaseline * w;
for (int x = x0 * subpixel; x < x1 * subpixel; x++) {
c[x].g = c[x].g >> 1;
c[x].r = c[x].r >> 1;
}
const int x_or = x0 - glyph->xoff, y_or = y0 - glyph->yoff;
c = image->pixels + y_or * w;
for (int x = x_or * subpixel; x < x1 * subpixel; x++) {
c[x].b = c[x].b >> 1;
c[x].r = c[x].r >> 1;
}
c = image->pixels + x_or * subpixel;
for (int y = y_or; y < y1; y++) {
c[y * w].b = c[y * w].b >> 1;
c[y * w].r = c[y * w].r >> 1;
}
}
#endif