From d1120ace145bb3a2b0006659c128a4162df15985 Mon Sep 17 00:00:00 2001
From: assiduous <assiduous@diligentgraphics.com>
Date: Thu, 10 Dec 2020 21:57:10 -0800
Subject: GLTFLoader: added option to not load animation data and skin

---
 AssetLoader/interface/GLTFLoader.hpp          | 21 +++++++++++++--------
 AssetLoader/interface/GLTFResourceManager.hpp |  9 ++++++---
 2 files changed, 19 insertions(+), 11 deletions(-)

(limited to 'AssetLoader/interface')

diff --git a/AssetLoader/interface/GLTFLoader.hpp b/AssetLoader/interface/GLTFLoader.hpp
index aba68c3..91f4aef 100644
--- a/AssetLoader/interface/GLTFLoader.hpp
+++ b/AssetLoader/interface/GLTFLoader.hpp
@@ -284,7 +284,7 @@ struct Animation
 
 struct Model
 {
-    struct VertexAttribs0
+    struct VertexBasicAttribs
     {
         float3 pos;
         float3 normal;
@@ -292,7 +292,7 @@ struct Model
         float2 uv1;
     };
 
-    struct VertexAttribs1
+    struct VertexSkinAttribs
     {
         float4 joint0;
         float4 weight0;
@@ -300,8 +300,8 @@ struct Model
 
     enum BUFFER_ID
     {
-        BUFFER_ID_VERTEX0 = 0,
-        BUFFER_ID_VERTEX1,
+        BUFFER_ID_VERTEX_BASIC_ATTRIBS = 0,
+        BUFFER_ID_VERTEX_SKIN_ATTRIBS,
         BUFFER_ID_INDEX,
         BUFFER_ID_NUM_BUFFERS
     };
@@ -348,6 +348,10 @@ struct Model
 
         /// Optional resource cache usage info.
         ResourceCacheUseInfo* pCacheInfo = nullptr;
+
+        /// Whether to load animation and initialize skin attributes
+        /// buffer.
+        bool LoadAnimationAndSkin = true;
     };
     Model(IRenderDevice*    pDevice,
           IDeviceContext*   pContext,
@@ -383,11 +387,11 @@ struct Model
 
     Uint32 GetBaseVertex() const
     {
-        auto& VertBuff = Buffers[BUFFER_ID_VERTEX0];
-        VERIFY(!VertBuff.pSuballocation || VertBuff.pSuballocation->GetOffset() % sizeof(VertexAttribs0) == 0,
+        auto& VertBuff = Buffers[BUFFER_ID_VERTEX_BASIC_ATTRIBS];
+        VERIFY(!VertBuff.pSuballocation || VertBuff.pSuballocation->GetOffset() % sizeof(VertexBasicAttribs) == 0,
                "Allocation offset is not multiple of sizeof(VertexAttribs0)");
         return VertBuff.pSuballocation ?
-            static_cast<Uint32>(VertBuff.pSuballocation->GetOffset() / sizeof(VertexAttribs0)) :
+            static_cast<Uint32>(VertBuff.pSuballocation->GetOffset() / sizeof(VertexBasicAttribs)) :
             0;
     }
 
@@ -400,7 +404,8 @@ private:
                   Node*                  parent,
                   const tinygltf::Node&  gltf_node,
                   uint32_t               nodeIndex,
-                  const tinygltf::Model& gltf_model);
+                  const tinygltf::Model& gltf_model,
+                  bool                   LoadSkin);
 
     void LoadSkins(const tinygltf::Model& gltf_model);
 
diff --git a/AssetLoader/interface/GLTFResourceManager.hpp b/AssetLoader/interface/GLTFResourceManager.hpp
index bd3ea19..f42c975 100644
--- a/AssetLoader/interface/GLTFResourceManager.hpp
+++ b/AssetLoader/interface/GLTFResourceManager.hpp
@@ -82,7 +82,7 @@ public:
 
     RefCntAutoPtr<ITextureAtlasSuballocation> FindAllocation(const char* CacheId);
 
-    Uint32 GetResourceVersion()
+    Uint32 GetTextureVersion()
     {
         Uint32 Version = 0;
 
@@ -93,6 +93,11 @@ public:
         return Version;
     }
 
+    Uint32 GetBufferVersion(Uint32 Index) const
+    {
+        return m_BufferSuballocators[Index]->GetVersion();
+    }
+
     IBuffer* GetBuffer(Uint32 Index, IRenderDevice* pDevice, IDeviceContext* pContext)
     {
         return m_BufferSuballocators[Index]->GetBuffer(pDevice, pContext);
@@ -131,8 +136,6 @@ private:
     using TexAllocationsHashMapType = std::unordered_map<std::string, RefCntWeakPtr<ITextureAtlasSuballocation>>;
     std::mutex                m_TexAllocationsMtx;
     TexAllocationsHashMapType m_TexAllocations;
-
-    std::atomic_uint32_t m_ResourceVersion = {};
 };
 
 } // namespace GLTF
-- 
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