v4.8.1

v4.8.1:

HIGHLIGHTS:

• Bug fixes and improvements

DETAILS:

• REBLUR_SH: fixed mis-normalized weighted sum for diffSh and specSh in HistoryFix pass (the regression appeared after finding a better initial weight for the center pixel)
• REBLUR_SH: minor performance optimization in "Temporal Stabilization" pass
• REBLUR_SH: fixed "touching" of specSh.w in HistoryFix pass, which is "modified roughness" and must not be processed in any way