MiSTer FPGA Forum

Is this not legit?? And the lies continues, right Ryuoken? Stop deceiving people. All you have there is a raspberry pi. Of course Laxer3A is legit. He's had sources for several fpga ps1 pieces available on github https://github.com/Laxer3a for a long time. And once he started working with a couple other people, like ultraembedded https://github.co...

The scaler filter was really only meant to implement scaling filters that are up to 4 taps like lanczos2 or bicubic interpolation. We're just lucky that you can make a scanline effect by darkening the phases corresponding to the center of the pixel. But there are a few ways to calculate scanlines. (1) Use a gaussian (bell curve) profile for the fil...

I'm still looking at this. Your script does a lot more than I thought it would :) So the thing is that you are effectively taking filters with above full brightness and mapping that back into the 0.0-1.0 range. So for example a 130% brightness 50% scanline because, after your conversion, a 100% brightness 65% scanline filter. That's fine of course,...

I put a set of filters on github, with the script I used. I do not have any actual science to back up what I did. I basically took the point on the curves where the slope started to decrease, and replace from that point on with curve from the top portion of a logistic function. https://github.com/ash2hub/Filters_MiSTer/tree/bright_phl/Filters/Scan...

Right now, all of the brighter scanlines have a brightness boost applied. This has several effects (1) The image is brighter overall (2) Scanlines become thinned (the dark part is thinner) when the color is close to max (3) The bright, center portion of the scanline will clip to 255 for bright or saturated colors. (1) and (2) were desired and (3) i...

There are two issues: (1) Scanlines don't work at 2x integer scaling because at 2x the scaler ends up darkening both upscaled pixels by the same amount due to symmetry. (2) Everything is too sharp in ao486 because of the double-scanned nature of VGA, Similar to the SNES core's 512 wide output for 256 wide video modes. Both of those issues can be fi...