Re: About freetype2 bitmap strike

[suzuki toshiya]

Hi,

Could you post your testing code written in C?
(please do not copy & paste it in your HTML email, please post as an attachment)

Regards,
mpsuzuki

P.S.
I hope you can reply to freetype@nongnu.org.
If you reply to me privately with no explanation why it is private, I will post 
it to the public list.
Thanks in advance!

On 2024/12/05 12:38, 大牙开心就好 via FreeType users wrote:
> Hi:
>     I use freetype2 to retrieve the bitmap data embedded in the font, 
> Using FT_LOAD_SBIS_ONLY.
> In the "simsun.ttf" font, some characters can be obtained while others cannot.
> Use "FontForge" software to view that these characters all contain bitmap data.
>
>
> for example:
>     characters "¤", its Unicode is 0x00A4，The bitmap data obtained 
> using freetype2 is consistent with the bitmap data viewed using FontForge software.
> As shown in the following figure.
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>     But, characters "A", its Unicode is 0x0041，Freetype2 cannot 
> obtain bitmap data. But using FontForge software, it can be seen that there is bitmap data.
>
> As shown in the following figure.
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> My test code：
>
> int ft_error;
>
> FT_Select_Size(face, 4);
>
> ft_error = FT_Load_Char(face, 0x00A4, FT_LOAD_RENDER | FT_LOAD_SBITS_ONLY | 
> FT_LOAD_MONOCHROME);
>
> ft_error is 0;
>
>  
>
> ft_error = FT_Load_Char(face, 0x0041, FT_LOAD_RENDER | FT_LOAD_SBITS_ONLY | 
> FT_LOAD_MONOCHROME);
>
> ft_error is 6;
>
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>     I found that the error occurred in tt_stit_decoder_load_image 
> function and returns NoBitmap.
>
> But use "FontForge" software open the "simsun.ttf" and view characters "A",We 
> can see that it has bitmap data.
>
> I don't know if this is a bug or some other reason, I hope to get your 
> help,Thank you.
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> My freetype2 version is V2.13.0, and the attachment is the "simsun. ttf" font.
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> 大牙开心就好
> 990087812@qq.com
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