Re: How to calculate the size of FT_RENDER_POOL for 240x320 LCD

[Alexei Podtelezhnikov]

On Wed, Dec 21, 2022 at 3:48 AM ricky rocky <rickyrocky.ble@gmail.com> wrote:
> I saw an info that, can reduce 16kB -> 4kB, but I don't know if that will 
> cause any bug when rendering.

Go ahead and  try it. It is surprising for me that you cannot afford
16kB while you want TrueType fonts, which are typically >100kB.
FreeType library compiled is typically 700kB. Font rendering is a very
computationally expensive task. Somehow I doubt that the rendering
pool is a place to conserve resources. I suggest that you look
elsewhere, or explain better why 16kB is multiplied  or, otherwise,
very critical to you.

As for your basic typography questions, I suggest
https://learn.microsoft.com/en-us/typography/opentype/spec/ttch01

Best,
Alexei