Re: A few questions about the new SDF render

[Anuj Verma]

Hello Zhuyie,

> 1. From the comments in ftsdf.c, [...]

The implementation only supports single channel SDF. So the documentation

for ` FT_RENDER_MODE_SDF ` is correct. Thanks though, the comment might

need some editing.

> 2. Are there any tutorials about [...]

The output is a pretty basic SDF, there is a comment on how to convert the output

values to unsigned pixel values (https://gitlab.freedesktop.org/freetype/freetype/-/blob/master/include/freetype/freetype.h#L3324).

As for tutorial, you can use the `ftsdf` demo program implementation in the shaders.

It should work exactly the same. https://gitlab.freedesktop.org/freetype/freetype-demos/-/blob/master/src/ftsdf.c#L598

Thanks,

Anuj