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javispedro |
2009-10-19
, 07:33
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Posts: 2,355 |
Thanked: 5,249 times |
Joined on Jan 2009
@ Barcelona
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#21
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Originally Posted by Jack6428
Well, after seeing Nokia claiming the gadget has 1GiB RAM, you'd feel that way too
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2009-10-19
, 12:43
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Posts: 47 |
Thanked: 21 times |
Joined on Oct 2009
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#22
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So does this mean that the N900's screen CAN display 16M but is restricted to 65K by the OS?
Please excuse my noobishness.
Please excuse my noobishness.
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2009-10-19
, 13:37
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Posts: 156 |
Thanked: 239 times |
Joined on Sep 2009
@ Finland
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#23
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Most cheap tft screens (based on tn-techonoly) to my understanding are actually limited to 18-bit (262144) colors even from the hardware side (I don't know exactly what kind of screen is on the N900). But yeah, seems like N900 is limited to 16-bit (65536) from OS.
Last edited by DeeGee; 2009-10-19 at 13:39.
Last edited by DeeGee; 2009-10-19 at 13:39.
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2009-10-19
, 17:00
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Posts: 270 |
Thanked: 303 times |
Joined on Sep 2009
@ Serbia, Belgrade
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#24
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We should sue Nokia. 
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2009-10-19
, 17:21
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Posts: 3,404 |
Thanked: 4,474 times |
Joined on Oct 2005
@ Germany
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#25
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See it positive.
You won't notice much difference at this high resolution with proper dithering, but the stuff is faster and needs less RAM.
This still does not prevent the camera from taking 24 bit photos (does it?).
You won't notice much difference at this high resolution with proper dithering, but the stuff is faster and needs less RAM.
This still does not prevent the camera from taking 24 bit photos (does it?).
__________________
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2009-10-19
, 17:25
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Posts: 97 |
Thanked: 18 times |
Joined on Oct 2009
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#26
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does maemo only surport 64k colours then
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2009-10-19
, 17:38
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Posts: 3,404 |
Thanked: 4,474 times |
Joined on Oct 2005
@ Germany
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#27
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Originally Posted by danielwilson
No, it has nothing to do with Maemo. Maemo could use more, if the display had more color depth.
does maemo only surport 64k colours then
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2009-10-19
, 17:56
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Posts: 97 |
Thanked: 18 times |
Joined on Oct 2009
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#28
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Originally Posted by pycage
so why can't nokia n900 use 16m colours then if it has it
No, it has nothing to do with Maemo. Maemo could use more, if the display had more color depth.
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2009-10-19
, 18:25
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Posts: 1,559 |
Thanked: 1,786 times |
Joined on Oct 2009
@ Boston
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#29
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Here's my interpretation. I'm sure someone will correct me where i'm wrong:
-the color display panel only supports 18 bit color in reality
-it's easier to work with byte-sized data (16 bits = 2 bytes; 18 bits not so much)
-therefore the frame buffer (memory that stores image of what's on screen) is set to 16 bits
-Maemo 5 device called N900 displays 16 bit color
In theory, it could support 18 bit color, but in practice i'm guessing it's not worth it. Increasing the framebuffer to 24 bit would increase by 50% the size of it and the bandwidth and processing requirements for handling it, and then it would only get 2 bits actual increase, anyway.
-the color display panel only supports 18 bit color in reality
-it's easier to work with byte-sized data (16 bits = 2 bytes; 18 bits not so much)
-therefore the frame buffer (memory that stores image of what's on screen) is set to 16 bits
-Maemo 5 device called N900 displays 16 bit color
In theory, it could support 18 bit color, but in practice i'm guessing it's not worth it. Increasing the framebuffer to 24 bit would increase by 50% the size of it and the bandwidth and processing requirements for handling it, and then it would only get 2 bits actual increase, anyway.
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2009-10-19
, 18:40
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Posts: 4 |
Thanked: 2 times |
Joined on Oct 2009
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#30
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AFAIK, the beagleboard supports 24 bit colour, and uses omap3, so the n900 probably does too. OpenGL ES (3D acceleration) only works at 16bit colour depth though, and this is probably the reason why this is the colour depth used. Plus the screen will only be 18bit depth at the most anyway like all TN TFT panels. I somehow doubt they put an IPS or PVA panel in a phone...