Added support for more bone weights in GLTF2

code/AssetLib/glTF2/glTF2Importer.cpp

@@ -970,21 +970,29 @@ static void BuildVertexWeightMapping(Mesh::Primitive &primitive, std::vector<std
     struct Weights {
         float values[4];
     };
-    Weights *weights = nullptr;
-    attr.weight[0]->ExtractData(weights);
+    Weights **weights = new Weights*[attr.weight.size()];
+    for (size_t w = 0; w < attr.weight.size(); ++w) {
+        attr.weight[w]->ExtractData(weights[w]);
+    }
 
     struct Indices8 {
         uint8_t values[4];
     };
     struct Indices16 {
         uint16_t values[4];
     };
-    Indices8 *indices8 = nullptr;
-    Indices16 *indices16 = nullptr;
+    Indices8 **indices8 = nullptr;
+    Indices16 **indices16 = nullptr;
     if (attr.joint[0]->GetElementSize() == 4) {
-        attr.joint[0]->ExtractData(indices8);
+        indices8 = new Indices8*[attr.joint.size()];
+        for (size_t j = 0; j < attr.joint.size(); ++j) {
+            attr.joint[j]->ExtractData(indices8[j]);
+        }
     } else {
-        attr.joint[0]->ExtractData(indices16);
+        indices16 = new Indices16 *[attr.joint.size()];
+        for (size_t j = 0; j < attr.joint.size(); ++j) {
+            attr.joint[j]->ExtractData(indices16[j]);
+        }
     }
     //
     if (nullptr == indices8 && nullptr == indices16) {
@@ -993,17 +1001,26 @@ static void BuildVertexWeightMapping(Mesh::Primitive &primitive, std::vector<std
         return;
     }
 
-    for (size_t i = 0; i < num_vertices; ++i) {
-        for (int j = 0; j < 4; ++j) {
-            const unsigned int bone = (indices8 != nullptr) ? indices8[i].values[j] : indices16[i].values[j];
-            const float weight = weights[i].values[j];
-            if (weight > 0 && bone < map.size()) {
-                map[bone].reserve(8);
-                map[bone].emplace_back(static_cast<unsigned int>(i), weight);
+    for (size_t w = 0; w < attr.weight.size(); ++w) {
+        for (size_t i = 0; i < num_vertices; ++i) {
+            for (int j = 0; j < 4; ++j) {
+                const unsigned int bone = (indices8 != nullptr) ? indices8[w][i].values[j] : indices16[w][i].values[j];
+                const float weight = weights[w][i].values[j];
+                if (weight > 0 && bone < map.size()) {
+                    map[bone].reserve(8);
+                    map[bone].emplace_back(static_cast<unsigned int>(i), weight);
+                }
             }
         }
     }
 
+    for (size_t w = 0; w < attr.weight.size(); ++w) {
+        delete[] weights[w];
+        if(indices8)
+            delete[] indices8[w];
+        if (indices16)
+            delete[] indices16[w];
+    }
     delete[] weights;
     delete[] indices8;
     delete[] indices16;