[ft] How can I Minimize Heap Size in Freetype 2.6?

[TINTU THOMAS]

Hello ,

I was using freetype 2.4 version in my embedded application for rendering ttf files only. It uses about 12 KB heap size, when I set  FT_RENDER_POOL_SIZE to 4096 Bytes.
But in freetype 2.6 ,it takes around 20 KB heap size minimum. Here I could observe ,freetype 2.6 doesn't use raster_pool anymore.
So can you answer these...

1. What is the minimum heap size needed for freetype to rasterize ttf files as a binary image? (I don't need smoothing and gray shades)

2.How can I minimize heap size in freetype 2.6 for this purpose?

Regards,
Tintu Thomas