General > General Technical Chat
The EU is banning 8K TV's!!!
PlainName:
--- Quote from: james_s on November 10, 2022, 05:34:18 pm ---
--- Quote from: PlainName on November 10, 2022, 05:30:55 pm ---Isn't that what stuff like Cleartype is all about? They draw at the 15x15 virtual scale and map that to the 10x10 actual pixels.
--- End quote ---
My recollection was that Cleartype used subpixels, I never cared enough to look into the details though.
--- End quote ---
My main experience of it is to turn it off, but I think - simplistically - it works out where a line should go and then, if it's between pixels, it 'adjusts' them so the line kind of seems to go where it should.
tom66:
ClearType's intelligence is treating the subpixels of a pixel as usable for improving font clarity. This is because the human eye has poor chrominance resolution compared to its luminance resolution, so the colour variation at the edges of the character will generally not be distinguishable - of course, this depends on the display resolution, your eyesight and how far away you are from the monitor. It also only works on monitors with regular grids of subpixels, like LCDs, and those with square pixels. For CRTs with dot arrays, it doesn't work, and for some newer OLED displays as featured on some laptops now, it definitely doesn't work, because there's often not a 1:1 relation between the subpixels and the pixels any more (quite often 1 green pixel per 1 real pixel but alternating red and blue shared with adjacent pixels.)
I quite like it on 1080p monitors and below. For a 4K monitor the resolution is already high enough that it has no particular benefit, but it also doesn't really harm anything, so I've never bothered to turn it off.
https://en.wikipedia.org/wiki/Subpixel_rendering
Zero999:
--- Quote from: PlainName on November 10, 2022, 05:30:55 pm ---
--- Quote from: Zero999 on November 10, 2022, 05:26:46 pm ---
--- Quote from: PlainName on November 10, 2022, 12:19:30 pm ---So if there was 8K input it would look better than upscaled input despite you not being able to see the individual pixels?
--- End quote ---
Setting the scaling on software simply draws the interface larger, to compensate for the higher resolution. Suppose the dimensions of a character such as the letter o is 10 pixels by 10 at 100%. If the scaling is set to 150%, then it will draw the letter o at 15 by 15 pixels.
--- End quote ---
Isn't that what stuff like Cleartype is all about? They draw at the 15x15 virtual scale and map that to the 10x10 actual pixels.
--- End quote ---
It's got nothing to do with Cleartype. If you've got two screens, one with a higher resolution than another and draw the graphics on the higher resolution screen with proportionally more pixels larger, they will both be the same size, but the higher resolution monitor will look shaper.
PlainName:
--- Quote ---but the higher resolution monitor will look shaper
--- End quote ---
Even though you can't distinguish between pixels?
tooki:
--- Quote from: PlainName on November 10, 2022, 11:54:33 am ---
--- Quote ---At work, I have two 27” 4K displays, run with Windows at 150%
--- End quote ---
How is that much different? Instead of ramping up to 150% you could've just got a lower resolutions screen at the same size.
--- End quote ---
It’s the same “real estate” as a 2560x1440 display, but everything is rendered with 2.25x as many pixels. It’s a dramatic improvement in sharpness of both text and graphics. Altium looks glorious in 4K.
It feels like going from a dot matrix printer to a laser printer.
Bear in mind that it doesn’t cost any extra to go 4K: these displays were bought just for me and I got to choose, and there was basically no difference in cost.
As zero999 said, Windows display scaling (on apps that support this, which is nearly all) is done on the vector graphics (or with higher-resolution bitmaps). It’s not done by interpolating the 100% bitmap. (That is what windows does for old apps that don’t support scaling.)
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version