nanogui: problems with colors in Nano-X, nxlib and Fltk-UTF8-1.1.6
Subject:
Re: [nanogui] problems with colors in Nano-X, nxlib and Fltk-UTF8-1.1.6
From:
####@####.####
Date:
9 Aug 2006 09:03:46 +0100
Message-Id: <E1GAj2V-0006mZ-Nv@www14.emo.freenet-rz.de>
Hi Greg,
the problem is solved!
In subdriver i used the wrong psi->rmask, psi->gmask and psi->bmask.
In the graphic driver function:
GetScreenInfo(PSD psd, PMWSCREENINFO psi) { ...
i replaced the
case MWPF_PALETTE:
psi->rmask = 0xff;
psi->gmask = 0xff;
psi->bmask = 0xff;
break;
through the
case MWPF_PALETTE:
psi->rmask = 0xff0000;
psi->gmask = 0x00ff00;
psi->bmask = 0x0000ff;
break;
... }
and all window colors works correct :)
But the image colors don't works correct after this change!!!
To patch the image problem i changed in
/engine/devdraw.c,
void GdArea(PSD psd, MWCOORD x, MWCOORD y, MWCOORD width, MWCOORD height, void *pixels, int pixtype)
{
...
case MWPF_TRUECOLOR888:
r = *PIXELS++;
g = *PIXELS++;
b = *PIXELS++;
gr_foreground = RGB2PIXEL888(r, g, b);
break;
through
case MWPF_TRUECOLOR888:
r = *PIXELS++;
g = *PIXELS++;
b = *PIXELS++;
gr_foreground = GdFindColor(psd, RGB2PIXEL888(r, g, b));
break;
...
}
Regards,
K
>
> iuse nano-X 0.91, nxlib 0.45 and fltk-utf8-1.1.6 on my embedded board.
> Myproblem is the wrong coloring of fltk applications.
> All fltk-apps(for instance "fltk hello app") are drawn with blue colors,
> thebackground is dark blue, the button is dark blue and text edit boxesare
> light blue.
>
> Mygraphic hardware has a hardware palette, a color lookup table with256
> colors each 24 bit (8 bit red , 8 bit green , 8 bit blue). Thescreen size
> is
> 640 x 480 pixel.
> Myself written graphic driver is specified for palletized graphichardware.
> It writes only color indexes into the memory
> e.g.: 1... 255.
>
>
> Thedriver PSD structure is set to:
> psd->pixtype= MWPF_PALETTE;
> psd->ncolors= 256;
> psd->size= 307200; //VGA 640 x 480
> psd->bpp= 24;
>
>
> Inthe graphic driver a Setpalette(...)function, fills the hardware lookup
> table with valid color values!The "nxview" application works absolutely
> correctwithout a coloring problem. But a fltk application is drawn with
> bluecolors?
> TheGdFindNearestColor(...) function gets already wrong color
> valuessupplied!
>
>
> Ithink the fltk palette differs from nano-X palette.
> Cananybody help my why only a fltk application is draw in blue colors???
>
>
>
>
> Regards
>
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