nanogui: Thread: problems with colors in Nano-X, nxlib and Fltk-UTF8-1.1.6

Hello,

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

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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> 
> 

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