SDL_RenderDrawLinesF

Draw a series of connected lines on the current rendering target at subpixel precision.

Syntax

int SDL_RenderDrawLinesF(SDL_Renderer * renderer,
                         const SDL_FPoint * points,
                         int count);

renderer	The renderer which should draw multiple lines.
points	The points along the lines
count	The number of points, drawing count-1 lines

Return 0 on success, or -1 on error

This function is available since SDL 2.0.10.