ds: emit undefined param warning once per descriptorset (#8862)

filament/src/ds/DescriptorSet.cpp

@@ -66,6 +66,7 @@ DescriptorSet& DescriptorSet::operator=(DescriptorSet&& rhs) noexcept {
         mDirty = rhs.mDirty;
         mValid = rhs.mValid;
         mSetAfterCommitWarning = rhs.mSetAfterCommitWarning;
+        mSetUndefinedParameterWarning = rhs.mSetUndefinedParameterWarning;
     }
     return *this;
 }
@@ -106,11 +107,12 @@ void DescriptorSet::commitSlow(DescriptorSetLayout const& layout,
     });
 
     auto const unsetValidDescriptors = layout.getValidDescriptors() & ~mValid;
-    if (UTILS_VERY_UNLIKELY(!unsetValidDescriptors.empty())) {
+    if (UTILS_VERY_UNLIKELY(!unsetValidDescriptors.empty() && !mSetUndefinedParameterWarning)) {
         unsetValidDescriptors.forEachSetBit([&](auto i) {
             LOG(WARNING) << (layout.isSampler(i) ? "Sampler" : "Buffer") << " descriptor " << i
                          << " of " << mName.c_str() << " is not set. Please report this issue.";
         });
+        mSetUndefinedParameterWarning = true;
     }
 }
 

filament/src/ds/DescriptorSet.h

@@ -110,6 +110,7 @@ private:
     mutable utils::bitset64 mValid;                         //  8
     backend::DescriptorSetHandle mDescriptorSetHandle;      //  4
     mutable bool mSetAfterCommitWarning = false;            //  1
+    mutable bool mSetUndefinedParameterWarning = false;     //  1
     utils::StaticString mName;                              // 16
 };