So the card arrived today, and I've spent the afternoon experimenting. Fortunately, getting it work wasn't too hard. The results so far are largely what I expected. For testing, I captured a second of uncompressed 8-bit quicktime uncompressed YUV using BlackMagic's software, of which five consecutive frames were analysed. The video was of the windows 10 desktop with default W10 wallpaper. The program I wrote tests only for temporal dithering, I will make something for spatial dithering but that's a slightly trickier task.
|intel integrated graphics||i5 6400||DisplayPort (DP)||Ditherig set to 'No Dithering'||No temportal dithering detected|
|intel integrated graphics||i5 6400||DP||Ditherig set to 'Spatial (default)'||No temportal dithering detected|
|intel integrated graphics||i5 6400||DP||Ditherig set to 'Spatial Temporal 1'||Temporal dithering detected|
|GT210||not sure which drivers||HDMI||Temporal Dithering Detected|
|GTX 1060||latest drivers||HDMI||Temporal Dithering Detected|
|GTX660||driver: 388.13||DP||Temporal dithering detected|
|GT720||Driver 341.74||HDMI||Temporal Dithering Detected|
|AMD firepro W700||latest drivers||Temporal dithering detected|
I am somewhat confident these results are right, I was surprised that ditherig/intel actually worked as I've had discomfort using a setup like this - but the results match ditherig's settings. Also no surprise that the 1060 dithered.
There's quite a lot of things for me to test: Different ports/computers, recording text, different software, cards and operating systems. Will keep you all updated.
edit by: @Slacor to include table