SDL, sloped pixel lines

[klausvdl]

Would you mind explaining of what you mean by "Sloped lines are rendered without pixel scaling"?
Perhaps by posting two example images. One showing sloped line with pixel scaling and one without.

This is a screenshot from a window with the physical size of 960 x 540.
The logical size was set to 320 x 180, so each rendered pixel has internally to be scaled up (3 x).
But the thin lines are rendered by SDL's own line renderer and unfortunately the pixels are not scaled up.
The thick lines are rendered with the new procedure.

line demo.jpg