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(stb.c) Resize atlas when printable characters dont fit

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This commit is contained in:
Higor Eurípedes 2015-07-16 11:37:08 -03:00
parent d10bb24328
commit e4da044c99
1 changed files with 15 additions and 0 deletions
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15
gfx/drivers_font_renderer/stb.c
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@ -18,6 +18,7 @@
#include <file/file_path.h>
#include "../../general.h"
#include "../../file_ops.h"
#include <ctype.h>
#define STB_TRUETYPE_IMPLEMENTATION
#define STB_RECT_PACK_IMPLEMENTATION
@ -63,6 +64,8 @@ static bool font_renderer_stb_create_atlas(stb_font_renderer_t *self,
stbtt_packedchar chardata[256];
self->atlas.width = self->atlas.height = 512;
alloc_atlas:
self->atlas.buffer = (uint8_t*)calloc(self->atlas.height, self->atlas.width);
if (!self->atlas.buffer)
@ -87,6 +90,18 @@ static bool font_renderer_stb_create_atlas(stb_font_renderer_t *self,
g->draw_offset_y = c->yoff;
g->width = c->x1 - c->x0;
g->height = c->y1 - c->y0;
/* make sure important characters fit */
if (isprint(i) && !isspace(i) && (!g->width || !g->height))
{
/* increase atlas by 20% in all directions */
self->atlas.width *= 1.2;
self->atlas.height *= 1.2;
free(self->atlas.buffer);
goto alloc_atlas;
break;
}
}
return true;