I haven't access to the target-system right now, but I made a short try at
home... I changed the functions "bgrx_converter" and "xrgb_converter"
in fl_draw_image and I have now the "wrong colors" like on the target-system.
So if I do the same on the target-system, then maybe I will have the correct
colors there.
Thanks for you help guys!
> > @ Nikita Egorov: What were your special workarounds?
> >
> > I want to use Pixmap and Bitmap (32bit)... It seems that somewhere the 4
> > bytes (alpha-chanel included) are changed. Both pixmap and bitmap are
> > shown in the wrong colors. But if i want to show white, it is yellow...
> > For me that is a hint, that alphachanel is also exchanged with the
> > color-bytes.
> >
> > Does anyone of you have an idea, where i have to make the change? I'm no
> > very familiar with this "deep inside code" (but i hope one day i will be
>
> 1) Sorry, I don't remember what exactly things were changed :-( I'll try to
> explain. I was faced with the problem when I was making port FLTK to DirectFB
> and I made a lot changes to expose correctly the colors . Alas, all these
> changes worked unstable. Then I've removed all these fixes and I've made my
> own version of DirectFB which supports twisted bytes. Though some features
> remain in FLTK-DirectFB port. Thus, all these changes were removed from
> original sources of FLTK.
>
> 2) I would recommend you try to change the xxx_converter() functions in
> src/fl_draw_image.cxx. These functions are used to convert the image data
> before the image will be put via XPutImage() (lines 522, 535 ). I suppose it
> might be rgbx_coverter() or xbgr_converter() (line 314). Try to change bytes
> order (ABGR=>GRBA) here or write your own simple function(s).
>
> I hope experienced FLTK developers will correct me if it need. Or they'll
> give you other wise council.
>
> PS To reverse bytes within word/dword as fast as possible you can use
> PowerPC's commands stwbrx/lwbrx. I've wrapped they into functions like that
> (GCC):
>
> static inline void store_le32( u32 *addr, u32 val) {
> __asm__ __volatile__("stwbrx %1,0,%2;n" : "=m" (*addr) :
> "r" (val), "r" (addr));
> }
> See lines about 890 in
> http://git.directfb.org/?p=ports/FLTK_1.x-DirectFB.git;a=blob;f=FL/xutils.h
>
_______________________________________________
fltk mailing list
[email protected]
http://lists.easysw.com/mailman/listinfo/fltk
