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Fix HDMI nVidia Color Space problem
For several years, the nVidia drivers, when connected via a digital-only HDMI connection, have had a problem where the color space used is often set incorrectly. Blacks look dark grey instead of black, greys look washed out, and whites don't appear to be white. I found out the problem - it's an nVidia driver issue where it uses a "16-235" color space, instead of a "0-255" color space, and there's no way in the NVIDIA Control Panel to fix it.
It is most noticeable on your desktop (where blacks are washed out), on the iRacing loading screen (where it shows the track image being loaded, on the right where the image fades to black, it's very washed out, and fades to dark grey instead of black), and in the sim (the dashboard, the steering wheel, and even colors of objects, are all washed out, or look like a sheen of dark grey has been placed on top).
The fix is to use a program called NV_RGBFullRangeToggle
http://blog.metaclassofnil.com/wp-content/uploads/...2/08/NV_RGBFullRangeToggle.zip
This will allow you to use the Full Range of RGB everywhere, including in-game and on-desktop.
- Extract it
- Right click the NV_RGBFullRangeToggle.exe file
- Choose "Run as administrator"
- Click "Set Full Range (0-255)"
- Restart when prompted
- (IMPORTANT!) After installing any updated drivers, you'll need to run this utility again and restart, to re-enable the full range.
Step 1 Pic 1: nVidia RGB Full/Limited Range Toggler - Opening Screen
Step 1 Pic 2: nVidia RGB Full/Limited Range Toggler - Full Range Set
Once you reboot, you may notice that things look better; blacks are truly black, there is no longer a "dark grey sheen", and contrasts appear clearer.
I found this program (and details about it) at a Guru3D post, titled "Tip for nVidia users using HDMI and getting accurate color format", located here:
http://forums.guru3d.com/showthread.php?t=371214
The post said:
Cita
This is only for nVidia users who are using HDMI on their display.
If you're display supports Full RGB, which most do, you may notice you aren't getting the right colors and the blacks don't seem so black and the whites don't seem so white. This is because despite under Display->Adjust Desktop Color Settings your digital color format being set at RGB, its actually by default set at Limited RGB, not Full. And you will see there is no option for Full RGB. Don't use ycbcr444 as it will oversaturate reds and magentas.
Full RGB is available only under Video->Adjust Video Color Settings, but this doesn't affect your games, applications, etc. Only videos.
The trick to enable Full RGB for everything is a reg hack, and luckily you can use a tool to do instead. Find it here (link)
You must use this tool every time you install a new driver.
Next, complain to nVidia to let this be a option in future drivers here: (link)
The two links within that post, are below.Also, I found the original blog post from the person who created this program (including source code):
http://blog.metaclassofnil.com/?p=83
Note: If the links are no longer valid, and you need a copy of this program, just let me know in a PM, and I'll send it to you.
Fuente: members.iracing.com
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