Add support for EXT_accessor_additional_types

CHANGES.md

@@ -1,5 +1,11 @@
 # Change Log
 
+### Not Released Yet
+
+##### Additions :tada:
+
+- Added support for `EXT_accessor_additional_types` in `AccessorView`.
+
 ### v0.41.0 - 2024-11-01
 
 ##### Breaking Changes :mega:

CesiumGltf/generated/include/CesiumGltf/AccessorSpec.h

@@ -30,9 +30,17 @@ struct CESIUMGLTF_API AccessorSpec : public CesiumGltf::NamedObject {
 
     static constexpr int32_t UNSIGNED_SHORT = 5123;
 
+    static constexpr int32_t INT = 5124;
+
     static constexpr int32_t UNSIGNED_INT = 5125;
 
+    static constexpr int32_t INT64 = 5134;
+
+    static constexpr int32_t UNSIGNED_INT64 = 5135;
+
     static constexpr int32_t FLOAT = 5126;
+
+    static constexpr int32_t DOUBLE = 5130;
   };
 
   /**

CesiumGltf/include/CesiumGltf/AccessorView.h

@@ -449,16 +449,36 @@ createAccessorView(
         model,
         accessor,
         std::forward<TCallback>(callback));
+  case Accessor::ComponentType::INT:
+    return ::CesiumGltf::CesiumImpl::createAccessorView<TCallback, int32_t>(
+        model,
+        accessor,
+        std::forward<TCallback>(callback));
   case Accessor::ComponentType::UNSIGNED_INT:
     return ::CesiumGltf::CesiumImpl::createAccessorView<TCallback, uint32_t>(
         model,
         accessor,
         std::forward<TCallback>(callback));
+  case Accessor::ComponentType::INT64:
+    return ::CesiumGltf::CesiumImpl::createAccessorView<TCallback, int64_t>(
+        model,
+        accessor,
+        std::forward<TCallback>(callback));
+  case Accessor::ComponentType::UNSIGNED_INT64:
+    return ::CesiumGltf::CesiumImpl::createAccessorView<TCallback, uint64_t>(
+        model,
+        accessor,
+        std::forward<TCallback>(callback));
   case Accessor::ComponentType::FLOAT:
     return ::CesiumGltf::CesiumImpl::createAccessorView<TCallback, float>(
         model,
         accessor,
         std::forward<TCallback>(callback));
+  case Accessor::ComponentType::DOUBLE:
+    return ::CesiumGltf::CesiumImpl::createAccessorView<TCallback, double>(
+        model,
+        accessor,
+        std::forward<TCallback>(callback));
   default:
     return callback(AccessorView<AccessorTypes::SCALAR<float>>(
         AccessorViewStatus::InvalidComponentType));

CesiumGltf/src/Accessor.cpp

@@ -39,9 +39,14 @@ Accessor::computeByteSizeOfComponent(int32_t componentType) noexcept {
   case CesiumGltf::Accessor::ComponentType::SHORT:
   case CesiumGltf::Accessor::ComponentType::UNSIGNED_SHORT:
     return 2;
+  case CesiumGltf::Accessor::ComponentType::INT:
   case CesiumGltf::Accessor::ComponentType::UNSIGNED_INT:
   case CesiumGltf::Accessor::ComponentType::FLOAT:
     return 4;
+  case CesiumGltf::Accessor::ComponentType::INT64:
+  case CesiumGltf::Accessor::ComponentType::UNSIGNED_INT64:
+  case CesiumGltf::Accessor::ComponentType::DOUBLE:
+    return 8;
   default:
     // TODO Print a warning here!
     return 0;