diff --git a/src/nvtt/CubeSurface.cpp b/src/nvtt/CubeSurface.cpp
index 2b42a89..004a02b 100644
--- a/src/nvtt/CubeSurface.cpp
+++ b/src/nvtt/CubeSurface.cpp
@@ -844,6 +844,8 @@ Vector3 CubeSurface::Private::applyCosinePowerFilter(const Vector3 & filterDir,
     return color;
 }
 
+
+
 #include "nvthread/ParallelFor.h"
 
 struct ApplyAngularFilterContext {
@@ -1023,6 +1025,20 @@ CubeSurface CubeSurface::fastResample(int size, EdgeFixup fixupMethod) const
 }
 
 
+void CubeSurface::_irradianceFilter(int size, EdgeFixup fixupMethod) {
+    *this = irradianceFilter(size, fixupMethod);
+}
+
+void CubeSurface::_cosinePowerFilter(int size, float cosinePower, EdgeFixup fixupMethod) {
+    *this = cosinePowerFilter(size, cosinePower, fixupMethod);
+}
+
+void CubeSurface::_fastResample(int size, EdgeFixup fixupMethod) {
+    *this = fastResample(size, fixupMethod);
+}
+
+
+
 void CubeSurface::toLinear(float gamma)
 {
     if (isNull()) return;
diff --git a/src/nvtt/nvtt.h b/src/nvtt/nvtt.h
index 1ca48ae..4b09bca 100644
--- a/src/nvtt/nvtt.h
+++ b/src/nvtt/nvtt.h
@@ -664,6 +664,10 @@ namespace nvtt
 
         NVTT_API CubeSurface fastResample(int size, EdgeFixup fixupMethod) const;
 
+        // Jai doesn't support non-pod structs as return types, so expose some other function to do the same, but operate in place:
+        NVTT_API void _irradianceFilter(int size, EdgeFixup fixupMethod);
+        NVTT_API void _cosinePowerFilter(int size, float cosinePower, EdgeFixup fixupMethod);
+        NVTT_API void _fastResample(int size, EdgeFixup fixupMethod);
 
         // Spherical Harmonics:
         NVTT_API void computeLuminanceIrradianceSH3(float sh[9]) const;