TAA subpixel jitter makes rasterized HDR specular highlights oscillate
per frame. The old RGB min/max neighborhood clamp re-clamped the
converged history against jitter-driven extremes every frame, leaving a
periodic residual that the bloom threshold then amplified into visible
glow pulsing on static models.
- TAA: replace the RGB AABB clamp with YCoCg variance clipping
(history clamped toward the stable neighborhood mean +/- 1.25 sigma,
intersected with the min/max box as a ghosting upper bound)
- Bloom extract: 5-tap cross prefilter before the threshold spreads
surviving 1px jitter energy over a ~4x4 footprint so the glow no
longer pulses
atdunbg