I need to tightly control the RGB values going out of the Intel NUC. Putting a custom FPGA HDMI inline tester between the NUC and my display, I can see the graphics card isn't always putting out the RGB value I send. The Intel Graphics Control panel is modifying things, it appears. Tested this by modifying brightness and contrast sliders in the Intel Graphics control pane. How can I turn off all corrections being done by any software so that I get the exact RGB output that I send to the graphics card? I have a NUCi3DNB.
No, I don't want to control using an FPGA. That's how I measure to values coming out of the HDMI port.
I want the Intel NUC to output RGB values directly as I send them and not modify them within the driver or any other software. For example if I send 64,64,64 the graphics card can output 64,63,63 because of color, brightness, or contrast tweaks the Intel graphics control panel or driver is forcing.
Don't understand how this is out of scope. Ignore the FPGA inline tester. Has nothing to do with the Intel NUC modifying RGB values.
It's an Intel integrated graphics card in an Intel NUC. Can't be more in scope than this.