lib for rendering circle in sdl.v

Render circle

    sdl.set_render_draw_color(ren, 0, 0, 0, 255)
    sdl.render_clear(ren)

    cfx.fill_circle(ren, 200, 300, 100, 0xff0000ff)
    cfx.draw_circle(ren, 300, 200, 100, 0x00ffffff)

    sdl.render_present(ren)

    sdl.delay(1000/60)