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Subject: Re: Upside down

Re: Upside down

From: [IDC]Dragon <idc-dragon_at_gmx.de>
Date: Thu, 11 Dec 2003 16:16:19 +0100 (MET)

> Not being a rockbox hacker (no time), this is just what I saw with a
> quick glance of the LCD driver code:
>
> lcd_write(true, LCD_SET_COM_OUTPUT_SCAN_DIRECTION + 8); /* mirror
> vertical: 1 */
>
> So, appearently the LCD can read the data in reverse, which negates
> having to bitswap everything before you display it.

Not quite, this only changes the X readout direction, would mirror the
display. The bitswapping is still the required downside, but we already have a
table for that (needed in the MPEG code)

Jörg

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Received on 2003-12-11

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