pinterf/AviSynthPlus v3.7.6pre-r4529 on GitHub

20260220 3.7.5.r4529 (pre 3.7.6)

Fix Colorbars inaccurate 10+ bit, by using ground truth linear RGB, similarly to ColorBarsHD.
Full refactoring.
update doc: https://avisynthplus.readthedocs.io/en/latest/avisynthdoc/corefilters/colorbars.html
Histogram "color" and "color2" (Vectorscope modes)
- full refactoring.
- Drawing is now matrix and color range aware. target positions (75%) +-I and +Q.
- add individual overlay options:
  added matrix, graticule, targets, axes, iq, iq_lines, circle
  parameters
- Fix: copy alpha from clip, initialize alpha to zero in the histogram area.
- Accurate pixel positioning and scaling to the active histogram area,
  limited/full range aware.
- update doc: https://avisynthplus.readthedocs.io/en/latest/avisynthdoc/corefilters/histogram.html

Fix r4504 regression YUV->RGBP bit-depth changing full-scale SSE2/AVX2 bug (exchanged G,B storage)
"Layer" YUV mul/add/subtract/lighten/darken: refactor chroma placement calculation, allowing SIMD optimization in the main frame processing
"Layer" YUV/RGBP mul/add/subtract/lighten/darken: refactor function dispatchers, add AVX2 path (LLVM/clangcl recommended)
Fix C-only vertical resampling code which added more rounding than needed (regression since pre-3.7.5 20250427)
Invert: per-plane processing for planar formats, use C even in AVX2, proper chroma inversion
New: AddAlphaPlane opacity parameter
New: ResetMask opacity parameter
rstdoc: document "opacity" in AddAlphaPlane and ResetMask
rstdoc: detail Layer "use_chroma" and opacity
Overlay "Blend": more speed, but keep accuracy, use float only where really needed
Layer: use YV16 internally for YUY2 (lessen source code bloat)