Font:getWidth behavior depends on usedpiscale

[modcos]

In the latest versions of LÖVE, I noticed that the value of getWidth depends on usedpiscale, and it differs from previous versions of LÖVE. An example and results are shown below:

local s = {'Test', 'Hello'}

local function wrap(s)
      local font = love.graphics.getFont(96)
      local width = font:getWidth(s)
      print("Width:", width)

      local _, wrapped = font:getWrap(s, width)

      for _, v in ipairs(wrapped) do
            print(v)
      end
end

for _, v in ipairs(s) do
      wrap(v)
end

-- usedpiscale = true
Width: 23
Tes
t
Width: 30
Hello

-- usedpiscale = false
Width: 23
Test
Width: 29
Hello

[slime73]

What platform and love version are you using? love 12 supports app-aware DPI scaling on Windows, whereas love 11 and older don't (the app's backbuffer is scaled up instead by the operating system, in love 11 on Windows when the display's DPI scale is not 100%).

[modcos]

I am using the latest build of LOVE - commit a9fca2e.

On my Windows 10 system, the scaling is set to 200%, and I get the result shown above when usedpiscale = true.

However, if I set the system scaling to 100% or 300%, I get the correct results.