Merge pull request #1414 from CesiumGS/fix-lod-fade

Fix LOD dithering artifacts

Author: kring

CHANGES.md

@@ -8,6 +8,7 @@
 
 ##### Fixes :wrench:
 
+- Fixed an issue with pixel dithering artifacts that could appear on tilesets.
 - Fixed an issue where DynamicPawn could get stuck after interrupting a flight from `UCesiumFlyToComponent`.
 
 ### v2.5.0 - 2024-05-01

Content/Materials/Layers/ML_DitherFade.uasset

@@ -3568,8 +3568,6 @@ void UCesiumGltfComponent::UpdateFade(float fadePercentage, bool fadingIn) {
  return;
  }
 
- fadePercentage = glm::clamp(fadePercentage, 0.0f, 1.0f);
-
  UCesiumMaterialUserData* pCesiumData =
  BaseMaterial->GetAssetUserData<UCesiumMaterialUserData>();
 
@@ -3582,10 +3580,12 @@ void UCesiumGltfComponent::UpdateFade(float fadePercentage, bool fadingIn) {
  return;
  }
 
+ fadePercentage = glm::clamp(fadePercentage, 0.0f, 1.0f);
+
  for (USceneComponent* pChild : this->GetAttachChildren()) {
  UCesiumGltfPrimitiveComponent* pPrimitive =
  Cast<UCesiumGltfPrimitiveComponent>(pChild);
- if (!pPrimitive || !pPrimitive->GetMaterials().Num()) {
+ if (!pPrimitive || pPrimitive->GetMaterials().IsEmpty()) {
  continue;
  }