What graphics API are used in gl, glcore, gl1, sdl2, xvideo and x11 ? Which are the more faster ? Thanks for reply.
OpenGL compatibility profile (v2.0+), OpenGL core profile (v3.3+), OpenGL v1 (legacy, fixed-function), respectively. Dunno what graphics APIs are actually used in xvideo and x11, but I believe they’re both 2D-accel-only.
Generally, glcore is your best bet if your GPU supports it. GL is the default for compatibility with older hardware but glcore is better if you can run it. gl1 is only for extreme legacy support.