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Re: Functions in ftcolor.c not defined
From: |
Werner LEMBERG |
Subject: |
Re: Functions in ftcolor.c not defined |
Date: |
Mon, 20 Sep 2021 11:02:24 +0000 (UTC) |
> To invoke this issue I use a function*
> FT_Palette_Set_Foreground_Color* in my source code (in the
> attachment).
This function has a special purpose and doesn't work for normal fonts.
You have to have colour glyphs to make this work. Typically such
fonts contains emojis, and they have a 'CPAL' table.
> The aim of my work is to show a text on an OLED display. This works
> but it looks ugly. Half of a text is not visible and there is a
> black background that I can't change.
Please bear in mind that in general FreeType doesn't produce colour
but coverage values. For example, if a pixel value is 0x80, it means
that the corresponding colour (whatever it is) covers this pixel by
50%. You have to blend this with the colour(s) you want.
Werner