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Re: Rendering glyph outline and normal to matching bitmaps
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From: |
Alexei Podtelezhnikov |
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Subject: |
Re: Rendering glyph outline and normal to matching bitmaps |
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Date: |
Sat, 9 May 2020 12:51:56 -0400 |
On Sat, May 9, 2020 at 12:37 PM Timo Suoranta <address@hidden> wrote:
>
> I render glyph twice, first to get bitmap of 'normal' glyph, and second to
> get bitmap with outline stroke.
> I need to combine these to a single two-channel bitmap.
> But the bitmaps have different sizes. How do can I render normal and outline
> to matching bitmaps?
> Or would it be possible to get such two-channel bitmap directly with freetype?
>
> Thanks!
The top-left corner offsets for each bitmap are provided in
FT_GlyphSlot->bitmap_left and FT_GlyphSlot->bitmap_top. If you
correctly use those, you can trivially blend the bitmaps onto a target
surface using whatever color you prefer.