From 1e17e175949f1143007e25faf486c2dfbc9161d5 Mon Sep 17 00:00:00 2001
From: Xiao Qi <xiaoqi.loh@digipen.edu>
Date: Sat, 25 Feb 2023 23:32:51 +0800
Subject: [PATCH] Working commit, do byte based copy

---
 src/AssetMacros.h              | 18 ++++++++++++++++++
 src/Libraries/MeshCompiler.h   |  4 +++-
 src/Libraries/MeshCompiler.hpp | 23 ++++++++++++++++++++---
 src/main.cpp                   |  2 ++
 4 files changed, 43 insertions(+), 4 deletions(-)

diff --git a/src/AssetMacros.h b/src/AssetMacros.h
index 64154b6..8a5f081 100644
--- a/src/AssetMacros.h
+++ b/src/AssetMacros.h
@@ -30,6 +30,24 @@ enum class ACCESSOR_DATA_TYPE : int
 	FLOAT = 5126
 };
 
+constexpr size_t SizeOfType(ACCESSOR_DATA_TYPE type)
+{
+	switch(type)
+	{
+	case ACCESSOR_DATA_TYPE::BYTE:
+	case ACCESSOR_DATA_TYPE::U_BYTE:
+		return sizeof(char);
+	case ACCESSOR_DATA_TYPE::SHORT:
+	case ACCESSOR_DATA_TYPE::U_SHORT:
+		return sizeof(short);
+	case ACCESSOR_DATA_TYPE::U_INT:
+	case ACCESSOR_DATA_TYPE::FLOAT:
+		return sizeof(float);
+	default:
+		return 0;
+	}
+}
+
 enum class ACCESSOR_COMPONENT_TYPE : int
 {
 	SCALAR = 64 + 1,
diff --git a/src/Libraries/MeshCompiler.h b/src/Libraries/MeshCompiler.h
index 49fd876..64d27f6 100644
--- a/src/Libraries/MeshCompiler.h
+++ b/src/Libraries/MeshCompiler.h
@@ -44,7 +44,7 @@ namespace SH_COMP
     static BufferViewReference bufferViews;
     static BufferData buffer;
 
-  	static void LoadFromFile(AssetPath path, ModelRef asset) noexcept;
+  	static inline void LoadFromFile(AssetPath path, ModelRef asset) noexcept;
     static inline void ProcessModel(ModelData const&, ModelRef asset) noexcept;
     static inline void BuildHeaders(ModelRef asset) noexcept;
 
@@ -54,3 +54,5 @@ namespace SH_COMP
     static void LoadAndCompile(AssetPath path) noexcept;
 	};
 }
+
+#include "MeshCompiler.hpp"
diff --git a/src/Libraries/MeshCompiler.hpp b/src/Libraries/MeshCompiler.hpp
index d659d1a..9bceb96 100644
--- a/src/Libraries/MeshCompiler.hpp
+++ b/src/Libraries/MeshCompiler.hpp
@@ -118,13 +118,30 @@ namespace SH_COMP
   {
     auto const& accessor = (*accessors)[accessorID];
     auto const& view = (*bufferViews)[accessor.bufferView];
-    dst.resize(3484);
-    std::cout << "buffer line\n";
+    auto const typeIdentifier{ static_cast<ACCESSOR_DATA_TYPE>(accessor.componentType) };
+    auto const sizeIdentifier{ SizeOfType(typeIdentifier) };
+    if (sizeof(T) == sizeIdentifier)
+    {
+      dst.resize(accessor.count);
+      std::memcpy(
+        dst.data(),
+        buffer + view.byteOffset,
+        view.byteLength
+      );
+      return;
+    }
+
+    std::vector<std::byte> tempData(view.byteLength);
     std::memcpy(
-      dst.data(),
+      tempData.data(),
       buffer + view.byteOffset,
       view.byteLength
     );
+
+    for (auto i{0}; i < accessor.count; i += sizeIdentifier)
+    {
+	    
+    }
   }
 
   inline void MeshCompiler::BuildHeaders(ModelRef asset) noexcept
diff --git a/src/main.cpp b/src/main.cpp
index 62a9c00..ff6c6d1 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -57,6 +57,8 @@ int main(int argc, char* argv[])
 	}
 	
 	#else
+	(void)argc;
+	(void)argv;
 	SH_COMP::MeshCompiler::LoadAndCompile("racoon_tiny.gltf");
 	#endif