Timeline for Why replicating the higher bits of RGB565 when converting to RGBA8888?
Current License: CC BY-SA 4.0
5 events
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| Oct 15, 2022 at 9:37 | comment | added | Dwayne Robinson |
"Incidentally this is the same as N*0xff/0x1f" Note it differs for values {3,7,24,28} which yield {24,57,198,231} with bit replication but {25,58,197,230} for round(N*255/31). All other values are the same (using floor or ceil instead of causes more error). So, it's a quite close approximation. However floor(N*33/4) does exactly match for all N with bit replication.
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| Oct 25, 2018 at 9:33 | history | edited | PaulHK | CC BY-SA 4.0 |
added 50 characters in body
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| Oct 25, 2018 at 2:11 | history | edited | PaulHK | CC BY-SA 4.0 |
edited body
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| Oct 25, 2018 at 2:10 | vote | accept | wip | ||
| Oct 25, 2018 at 2:03 | history | answered | PaulHK | CC BY-SA 4.0 |