Yves Degoyon wrote:
ola,
hi
i would also be interested in which context "RGBA" is twice as heavy as "YUV" (with respect to Gem/pdp)
it's as simple as have shown dumb+dumber :
thanks for the compliment.
in RGBA format, a pixel is represented by 4x(data size) in YUV planar 4:2:2 format, it is represented by : 1Y + 1/4*U +1/4*V = 1,5*(data size )
of course, loops are much faster with YUV 4:2:2
actually my point was about "datasize" in Gem and pdp. in Gem's RGBA format, each pixel is represented by 4 bytes (datasize=1byte)
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)
of course loops are much faster with less data.
i like the way people always argue here.
me too. please note that i don't say that pdp is bad or worse than Gem or something. but most likely i don't prove anything with this remark.
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