nanogui: Palette or TrueColor?
Subject:
RE: RE: Re: [nanogui] Palette or TrueColor?
From:
linuxhh ####@####.####
Date:
15 Dec 2001 03:03:28 -0000
Message-Id: <20011215030018.11507.qmail@sina.com>
----- Original Message -----
From:linuxhh ####@####.####
To:'Greg Haerr' ####@####.####
Subject:RE: Re: [nanogui] Palette or TrueColor?
Date:Sat, 15 Dec 2001 10:15:44 +0800
>----- Original Message -----
>From:"Greg Haerr" ####@####.####
>To:"linuxhh" ####@####.####
>Subject:Re: [nanogui] Palette or TrueColor?
>Date:Sat, 8 Dec 2001 01:23:45 +0800
> >: 1. Because this LCD only have 4096 color, how can I deal with the pallette of
> >MicroWindow?
> >: 2. There isn't any code to manage the 12BPP besides in "drivers blin12.c".
> >Can I regard my platform as 256 color( 8BPP palette ) or 4096 color( 12BPP
> >444TrueColor )?
> >
> >I think the best approach is to set up the framebuffer for 444 truecolor,
> >and then use the ioctl functions in drivers/scr_fb.c to set up the internal
> >linux palette. In this way, Microwindows will see the framebuffer as truecolor,
> >rather than a > 256 color palette.
> >
>I have try to set up the framebuffer for 444 truecolor. But how can i define RGB2PIXEL444 in "device.h"?
>#define RGB2PIXEL444(r,g,b) \n > ((((r) & 0x0f) << 8) | (((g) & 0x0f) << 4) | ((b) & 0x0f))
>or
>use high order of RGB color?
>
Another question: if i use 444 truecolor then
"psd->pixtype = TRUECOLOR444"
When I use GdSetPalette to set my palettte,
if(psd->pixtype != MWPF_PALETTE)
return;
will return my request. How can i do?
>
> >Please send me the completed 12bpp driver if you get this working.
>
>Ok, i will clean up my code then send to you. :)
>Now code is very tousy.
> >
> >Regards,
> >
> >Greg
> >
> >
> >
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