FreeType::getTextSize doesn't return correct height

[Moldoteck]

System information (version)

• OpenCV =>4.2.0
• FreeType2 contrib=>4.2.0
• Operating System / Platform => Win10
• Compiler => MVSC

Detailed description

Text height is not correct
.

Steps to reproduce

When calling this function with any text, any height, and zero thickness, I always get height equal to 1.
When calling this function with any text, any height, and thickness>0, I always get height equal to 2*thickness

const cv::Size newTextSize{ freeType->getTextSize("hello", 100, 0, &baseline) };
const cv::Size otherTextSize{ freeType->getTextSize("world", 100, 2, &baseline) };

[skaldesh]

I have a similar issue, where my text height is also not correct. I am drawing 1 letter onto a black image at position 0, 0 (top-left corner). The result looks like this:

getTextSize() returns for this example a height of 23.
With Gimp, I found out that the text is drawn 7 pixels too low.
fefont.txt: this is the font I used

[skaldesh]

I just realized that probably getTextSize() is working correct for me, but putText() is not. I'll have to open another issue