Qt-embedded-interest Archive, November 2007
Black stripes on widgets
Message 1 in thread
Hi,
I have ported qt-3.3.8 and konqueror3-2006 to MIPS with color depth
8bpp.
I facing a problem of having black uniformly spaced stripes through-out
the display, including buttons, labels and all the widgets.
It is observed everywhere, appearing uniformly spaced and occur as one
black pixel after every 3 or 4 pixels.
I tried modifying the ::blt() in qgfxraster_qws.cpp as below for every
memmove(), which helped in displaying some widgets proper (code snippet
is as below);
but not uniformly. if anybody have come across similar issue, or anybody
know where the Qlabel.Qcombobox and similar widgets are rendered,
request to share some pointers on this and is appriciated.
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int m;
unsigned int *uvram ;
unsigned int *vram;
if (plot) {
unsigned char *srcptr=srcline+(x-rx+srcoffs.x())*bytesPerPixel;
unsigned char *destptr = l + x*bytesPerPixel;
#if 1 // THIS IS THE CODE I HAVE MODIFIED TO
uvram = (unsigned int*)srcptr;
vram = (unsigned int*)destptr;
for (m = 0; m <( (x2-x+1) * bytesPerPixel)/4; m++){
*(vram++) = *(uvram++);
}
#else // THE ORGINAL CODE IS HERE
memmove(destptr, srcptr, (x2-x+1) * bytesPerPixel );
#endif
}
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Thanks and Regards,
Sebastian Rajan
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