Yves Degoyon wrote:
ola,
i always thought, pdp uses short as datatype, which gives you far better resolution. otoh, this means that you need 6 bytes per pixel (datasize=2bytes)
err, 1,5*datasize = 1,5*2 is not really 6, mas bien 3.
oops, sorry; my math is getting rusty...
of course you are right that one pdp-pixel is still less than one Gem RGBA pixel.
but the point is not this ( not the size of the data ), but how many data you process in a loop,
do i read this correctly as: how many data is processed in the entire loop (e.g. the size of the image)? that's what i meant with "loops are much faster with less data"; i haven't said that loops are faster when you process bytes instead of shorts.
actually more than 2 times less.
now again my math strikes me. if one pixel takes 3 bytes in pdp and 4 bytes in Gem, then an image of 100x100 pixels has 30000 bytes in pdp and 40000 bytes in Gem. so its 25% less data and not 50% (however, with a better resolution)
mfg.asdr IOhannes