FBG – Lightweight C Linux framebuffer graphics with parallelism

Re:FBG – Lightweight C Linux framebuffer graphics with paral... by Vendan on Sunday June 17, 2018 @11:18PM (#17335804)

Yeah, but linux framebuffer can do a very optimal swap... Just make the "virtual buffer" twice as tall, and then swap which "half" is "active" with a panDisplay IOCTL... That's why memcpy is such a bad idea, cause there is a very cheap method that can prevent tearing and such.

[ Parent | on HN ]

Re:FBG – Lightweight C Linux framebuffer graphics with paral... by onirom on Monday June 18, 2018 @06:28AM (#17337070)

I am aware of those, this might land in a future update.

The library initial focus was just to get multiple cores to work for graphics task...

[ Parent | on HN ]

Re:FBG – Lightweight C Linux framebuffer graphics with paral... by pjmlp on Monday June 18, 2018 @04:44AM (#17336724)

Ah memories of swapping card registers for double buffering on MS-DOS.

Here is a tutorial about it, that I just googled for.

http://www.brackeen.com/vga/unchain.html

[ Parent | on HN ]

Re:FBG – Lightweight C Linux framebuffer graphics with paral... by v_lisivka on Monday June 18, 2018 @12:08PM (#17339328)

With CRT monitors, it was possible to swap buffer in the middle of the frame, to display different buffers in different areas of the screen. It was used on 16bit systems for fast scrolling and to display status line.

[ Parent | on HN ]