Most shaders see a huge improvement with 4K and higher resolutions. Brighter displays, better color depth and higher refresh rates are all beneficial for CRT emulation.
TVL = Television lines. Basically, this was used as a measurement of a TV’s resolution back in the day.
A higher TVL means greater phosphor density and more pronounced scanlines.
I think the parameters for the reflection shader should be similar. Guest-SM is designed to be used with the mask.
Yep, I used the color bars test pattern in 240p Test Suite and gradually reduced the strength of the scanlines until they were no longer visible over the brightest colors, then gradually increased the strength of the scanlines until they were all visible again.
For the blur, I just used a variety of sources and eyeballed it. Below 3.00, black lines lose a lot of sharpness and a lot of details in pixel art won’t look right. Above 4.00 starts looking too sharp and anything above 5.00 looks like nearest neighbor- this also depends on the sharpness of the display being used, though.
For color, make sure the display you’re using is calibrated and then check out Dogway’s grading shader. Syh posted a link a few posts up.
Scanline type - you can select this in the parameter options. Type 2 is recommended for high TVL and type 0 for low TVL. Use scanline1 and scanline2 for large adjustments and beam_min and beam_max for additional fine-tuning.
For brightness, you can use a light meter or a smartphone app that measures light and use the white screen in Fudoh’s 240p test suite. You can also eyeball it- you just want to make sure that white is actually white and not gray.
Gray ramp, color bars and PLUGE are all useful for adjusting brightness, color levels, contrast and gamma. You can press “start” at any point to bring up the help screen in Fudoh’s 240p Test Suite.
Bear in mind that display specs/calibration WILL affect the min/max parameter settings. With better contrast and color depth you can reduce the scanline strength even further before they disappear over the brightest colors, and more brightness means you can increase the scanline strength more. I’m not sure, but I think display resolution will also affect this.