C:\SDLMAME>sdlmame64 -video accel -rd opengles2 -mt 005C:\SDLMAME>sdlmame64 -video accel -rd direct3d -mt 005C:\SDLMAME>sdlmame64 -video accel -rd software -mt 005C:\SDLMAME>sdlmame64 -video accel -rd opengl -mt 005