32 bit color LCD ?

jpeyton

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why do you need 32-bit color?
 

zephyrprime

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They all support 32bit color but they can't display that many colors because of their physical limitations. Don't worry about it.
 

dc5

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does that mean if you have an lcd, it's useless setting it to 32 bit in the video properties? just go back to 16 bit?
 

zephyrprime

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No, it's not useless. They can still show more than 16bit. The LCD's of several years ago were 18bit. The new ones are probably a few bits better but still short of 24bit. And by the way, there's no difference between 24bit and 32bit. The extra 8 bits is just for either alpha channel or it's unused.
 
Jan 31, 2002
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Originally posted by: zephyrprime
And by the way, there's no difference between 24bit and 32bit. The extra 8 bits is just for either alpha channel or it's unused.

32-bit is used to fit the "power of two" system that video cards :heart: so much, and zephyrprime is right - it's either alphachannel, unused, or Matrox Gigacolor. 10x10x10x2 bits RGBA, allowing for +1 billion colours. :D

- M4H
 

NightCrawler

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Oct 15, 2003
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Originally posted by: zephyrprime
No, it's not useless. They can still show more than 16bit. The LCD's of several years ago were 18bit. The new ones are probably a few bits better but still short of 24bit. And by the way, there's no difference between 24bit and 32bit. The extra 8 bits is just for either alpha channel or it's unused.

Yes but what will 32 bit icons that use the alpha channel look like on a 24 bit LCD screen ?
 

DaveSimmons

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Aug 12, 2001
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Originally posted by: NightCrawler
Yes but what will 32 bit icons that use the alpha channel look like on a 24 bit LCD screen ?
In Windows (XP) 32-bit icons are 24 bits of color (8 each R,G,B) plus 8 bits of alpha (transparency).
 

zephyrprime

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Yes but what will 32 bit icons that use the alpha channel look like on a 24 bit LCD screen ?
The video card or windows will perform the alpha overlays and in the end, only 24bit color remains. Alpha does not exist at the point where the monitor enters into the display process.