diff --git a/source/blender/gpu/metal/mtl_shader_generator.hh b/source/blender/gpu/metal/mtl_shader_generator.hh
index dc2a37a1fb6..930bc8a30c0 100644
--- a/source/blender/gpu/metal/mtl_shader_generator.hh
+++ b/source/blender/gpu/metal/mtl_shader_generator.hh
@@ -529,6 +529,7 @@ inline bool is_builtin_type(std::string type)
       {"uchar4", MTL_DATATYPE_UCHAR4},
       {"vec3_1010102_Unorm", MTL_DATATYPE_UINT1010102_NORM},
       {"vec3_1010102_Inorm", MTL_DATATYPE_INT1010102_NORM},
+      {"packed_float3", MTL_DATATYPE_PACKED_FLOAT3},
   };
   return (glsl_builtin_types.find(type) != glsl_builtin_types.end());
 }
diff --git a/source/blender/gpu/metal/mtl_shader_interface_type.hh b/source/blender/gpu/metal/mtl_shader_interface_type.hh
index da51e047d0f..501dd8acfae 100644
--- a/source/blender/gpu/metal/mtl_shader_interface_type.hh
+++ b/source/blender/gpu/metal/mtl_shader_interface_type.hh
@@ -50,6 +50,7 @@ enum eMTLDataType {
   MTL_DATATYPE_FLOAT2,
   MTL_DATATYPE_FLOAT3,
   MTL_DATATYPE_FLOAT4,
+  MTL_DATATYPE_PACKED_FLOAT3,
 
   MTL_DATATYPE_LONG,
   MTL_DATATYPE_LONG2,
@@ -128,6 +129,7 @@ inline uint mtl_get_data_type_size(eMTLDataType type)
       return 8;
 
     case MTL_DATATYPE_HALF3x2:
+    case MTL_DATATYPE_PACKED_FLOAT3:
       return 12;
 
     case MTL_DATATYPE_INT3:
@@ -229,6 +231,7 @@ inline uint mtl_get_data_type_alignment(eMTLDataType type)
     case MTL_DATATYPE_UINT3:
     case MTL_DATATYPE_UINT4:
     case MTL_DATATYPE_FLOAT3:
+    case MTL_DATATYPE_PACKED_FLOAT3:
     case MTL_DATATYPE_FLOAT4:
     case MTL_DATATYPE_LONG2:
     case MTL_DATATYPE_ULONG2: