Hi all,
I've been playing with bytemaps (see the latest LuaMetaFun manual) and I
have come across a problem when I create more than 15 bytemaps. This
came about as part of a bigger project where I create a large bytemap
and then make smaller bytemaps with the data from the large bytemap.
I've made a MWE below
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\startMPpage
i := 1;
for x = 1 upto 5:
for y := 1 upto 5:
newbytemap i of (250,250,3);
setbytemap i to (floor(uniformdeviate(255) +
1),floor(uniformdeviate(255) + 1),floor(uniformdeviate(255) + 1));
fill
unitsquare xyscaled (250,250) shifted ((x) * 255, (y) *255)
withbytemap i;
i := i + 1;
endfor;
endfor;
\stopMPpage
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
The MWE above is for a 5 X 5 grid of randomly generated colours and you
can see that the last 10m squares are black. Changing x or y to 3 will
give 15 coloured squares, but a 4 X 4 grid and above gives black
squares above 15 coloured squares. I can't see anything wrong with the
code so I'm wondering if it is a bug.
Any advice would be gratefully received. I'm running the latest update
on a mac mini M1.
Thanks
Best Wishes
Keith
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