DASR - Differential Adaptive Shimmer Reductor

Hi, this is a shader i've been working on lately with a precise purpose : reduce image instability such as shimmer, moiré patterns and noisy high-frequency like fireflyes while preserving as much real detail as possible.DASR is mainly designed for games and engines that do not provide any temporal reconstruction or advanced anti-aliasing solution or a too blurry TAA implementation.
Older or lightweight engines can often expose strong subpixel instability, crawling patterns and aliasing artifacts that are normally handled inside the rendering pipeline.This shader cannot replace a native TAA/temporal reconstruction solution, and it has the usual limitations of a post-process approach, It has no access to motion vectors, material information or the original rendering data available to engine-integrated solutions.However, for cases where those tools are not available, DASR aims to provide a way to improve image stability.The shader is still evolving, but it has reached a point where I think it is ready to be shared and tested.


Github : DASR

Could this shader help with reducing flickering/flashing in games? While I'm not diagnosed as photosensitive, I just don't like games that have a lot of fast flashing/flickering going on, like a lot of older NES/SNES games have on stuff like UI elements and characters. I would gladly trade-off a flicker-free experience with some latency.

if you mean big flash of lights that covers almost entirely the screen, probably not, if you mean little sparkle or too bright sprinkles, this shader will help to attenuate the effect, but the more you will reduce the flickering/shimmering the more ghosting will probably happen, try to tune up the amount of fps for history and the sliders related to ghosting, there could be a promising tradeoff.

keep in mind that i designed this shader while observing a specific problem occurring in train simulators under various light perspective, the shimmer and flickering i focused on minimizing were the so called "fireflyes" or "sparkle" and the little thin reflection that occur on the tracks or metal object borders

I meant like flashing elements like when characters getting hit or flashing UI elements. I don't mind some ghosting and will try out the shader later, thanks.

Tried the shader in Duckstation, there seems to be some compilation error.

my bad, when updating the code, instead of swapping two comments i duplicated the entire shader, solved now, thanks for the bug-report, tested on derail valley with reshade 6.7, working.