Merge branch 'master' into master

code/AssetLib/FBX/FBXConverter.cpp

@@ -917,8 +917,10 @@ void FBXConverter::ConvertModel(const Model &model, aiNode *parent, aiNode *root
         } else if (line) {
             const std::vector<unsigned int> &indices = ConvertLine(*line, root_node);
             std::copy(indices.begin(), indices.end(), std::back_inserter(meshes));
-        } else {
+        } else if (geo) {
             FBXImporter::LogWarn("ignoring unrecognized geometry: ", geo->Name());
+        } else {
+            FBXImporter::LogWarn("skipping null geometry");
         }
     }
 

code/AssetLib/XGL/XGLLoader.cpp

@@ -250,7 +250,7 @@ void XGLImporter::ReadWorld(XmlNode &node, TempScope &scope) {
 		}
 	}
 
-	aiNode *const nd = ReadObject(node, scope, true);
+	aiNode *const nd = ReadObject(node, scope);
 	if (!nd) {
 		ThrowException("failure reading <world>");
 	}
@@ -296,16 +296,13 @@ aiLight *XGLImporter::ReadDirectionalLight(XmlNode &node) {
 }
 
 // ------------------------------------------------------------------------------------------------
-aiNode *XGLImporter::ReadObject(XmlNode &node, TempScope &scope, bool skipFirst/*, const char *closetag */) {
+aiNode *XGLImporter::ReadObject(XmlNode &node, TempScope &scope) {
 	aiNode *nd = new aiNode;
 	std::vector<aiNode *> children;
 	std::vector<unsigned int> meshes;
 
 	try {
 		for (XmlNode &child : node.children()) {
-
-			skipFirst = false;
-
 			const std::string &s = ai_stdStrToLower(child.name());
 			if (s == "mesh") {
 				const size_t prev = scope.meshes_linear.size();

code/AssetLib/XGL/XGLLoader.h

@@ -185,7 +185,7 @@ private:
     void ReadWorld(XmlNode &node, TempScope &scope);
     void ReadLighting(XmlNode &node, TempScope &scope);
     aiLight *ReadDirectionalLight(XmlNode &node);
-    aiNode *ReadObject(XmlNode &node, TempScope &scope, bool skipFirst = false/*, const char *closetag = "object"*/);
+    aiNode *ReadObject(XmlNode &node, TempScope &scope);
     bool ReadMesh(XmlNode &node, TempScope &scope);
     void ReadMaterial(XmlNode &node, TempScope &scope);
     aiVector2D ReadVec2(XmlNode &node);

code/AssetLib/glTF2/glTF2Importer.cpp

@@ -1337,6 +1337,17 @@ std::unordered_map<unsigned int, AnimationSamplers> GatherSamplers(Animation &an
         }
 
         auto& animsampler = anim.samplers[channel.sampler];
+
+        if (!animsampler.input) {
+            ASSIMP_LOG_WARN("Animation ", anim.name, ": Missing sampler input. Skipping.");
+            continue;
+        }
+
+        if (!animsampler.output) {
+            ASSIMP_LOG_WARN("Animation ", anim.name, ": Missing sampler output. Skipping.");
+            continue;
+        }
+
         if (animsampler.input->count > animsampler.output->count) {
             ASSIMP_LOG_WARN("Animation ", anim.name, ": Number of keyframes in sampler input ", animsampler.input->count, " exceeds number of keyframes in sampler output ", animsampler.output->count);
             continue;