Skeletal pixels now bypass the internal temporal accumulato

neo/engine/opengl/gl_d3d12raylight.cpp

@@ -5399,6 +5399,10 @@ float3 EstimateRayTracedSpecularReflection(
 R"(
 float3 ApplyRealisticOutputCurve(float3 color)
 {
+    color.r = ((color.r == color.r) && abs(color.r) < 65504.0) ? color.r : 0.0;
+    color.g = ((color.g == color.g) && abs(color.g) < 65504.0) ? color.g : 0.0;
+    color.b = ((color.b == color.b) && abs(color.b) < 65504.0) ? color.b : 0.0;
+
     // Final photographic shoulder only: it does not change light radius or
     // attenuation, but it prevents intense local lights/specular/bloom from
     // clipping into a flat white patch. Values below 1.0 are left untouched.
@@ -5935,6 +5939,18 @@ void TemporalAccumCS(uint3 dispatchThreadId : SV_DispatchThreadID)
     float4 history = gHistoryTex.Load(int3(pixel, 0));
     float historyCount = (gFrameIndex == 0u) ? 0.0 : clamp(history.a, 0.0, 63.0);
 
+    // This temporal accumulator has no reprojection/object history validation.
+    // Animated characters can inherit the previous frame's wall/background color
+    // at the same screen pixel, which shows up as grey path-trace-only dirt even
+    // though the current G-buffer is clean. Keep skeletal pixels current-frame
+    // and let the following geometry-aware spatial pass do the filtering.
+    if (isSkeletal)
+    {
+        gTemporalOutTex[pixel] = raw;
+        gHistoryOutTex[pixel] = float4(raw.rgb, 0.0);
+        return;
+    }
+
     if (historyCount <= 0.0)
     {
         gTemporalOutTex[pixel] = raw;
@@ -5952,8 +5968,6 @@ void TemporalAccumCS(uint3 dispatchThreadId : SV_DispatchThreadID)
     // current-frame weight so the accumulator does not leave obvious trails.
     float currentWeight = max(1.0 / (historyCount + 1.0), 0.035);
     currentWeight = max(currentWeight, saturate(relChange * 0.24));
-    if (isSkeletal)
-        currentWeight = max(currentWeight, 0.25);
     currentWeight = saturate(currentWeight);
 
     float3 resolved = lerp(historyColor, max(raw.rgb, 0.0), currentWeight);