*

2025-05-13 02:50:08 +03:00
parent 20b4502be5
commit 9af2bb814e
102 changed files with 259423 additions and 2 deletions
@@ -0,0 +1,118 @@
+#ifndef Submesh_h__
+#define Submesh_h__
+
+#include <vector>
+#include "LEngine.h"
+#include "d3d11_types.h"
+#include <memory>
+#include "d3dx12.h"
+
+enum class MeshTopology {
+	TriangleList,
+	TriangleStrip,
+	LineList,
+	LineStrip
+};
+
+class Submesh {
+public:
+	typedef uint32_t index_count_t;
+	typedef uint32_t index_t;
+	typedef std::vector<index_t> index_array_t;
+
+	Submesh() 
+		:_indexCount(0)
+	{
+
+	}
+	ID3D12ResourcePtr GetIndexBuffer() const{
+		return _indexBuffer;
+	}
+
+	MeshTopology GetTopology() const{
+		return _topology;
+	}
+
+	D3D12_INDEX_BUFFER_VIEW GetIndexBufferView()
+	{
+		return _indexBufferView;
+	}
+
+	void Set(index_array_t indices, MeshTopology topology) {
+		_indexCount = indices.size();
+		_topology = topology;
+		_indexBuffer = nullptr;
+
+		if (_indexCount == 0) {
+			return;
+		}
+
+		D3D11_BUFFER_DESC desc = { 0 };
+		D3D11_SUBRESOURCE_DATA data = { 0 };
+
+		//index buffer
+		desc.Usage = D3D11_USAGE_DEFAULT;
+		desc.ByteWidth = sizeof(indices[0]) * indices.size();
+		desc.BindFlags = D3D11_BIND_INDEX_BUFFER;
+		desc.CPUAccessFlags = 0;
+		desc.MiscFlags = 0;
+
+		data.pSysMem = &indices[0];
+		data.SysMemPitch = 0;
+		data.SysMemSlicePitch = 0;
+
+		auto renderer = LEngine::Instance()->GetRenderer();
+		auto device = renderer->GetDevice();
+		auto cmdList = renderer->BeginCommandList();
+
+		//create temporal upload resource
+		ComPtr<ID3D12Resource> uploadBuffer;
+		device->CreateCommittedResource(&CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_UPLOAD),
+			D3D12_HEAP_FLAG_ALLOW_ALL_BUFFERS_AND_TEXTURES,
+			&CD3DX12_RESOURCE_DESC::Buffer(desc.ByteWidth),
+			D3D12_RESOURCE_STATE_GENERIC_READ, nullptr, IID_PPV_ARGS(&uploadBuffer));
+
+
+		//upload data to temporal resource
+		void* p;
+		uploadBuffer->Map(0, nullptr, &p);
+		memcpy(p, &indices[0], desc.ByteWidth);
+		uploadBuffer->Unmap(0, nullptr);
+
+		device->CreateCommittedResource(&CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_DEFAULT),
+			D3D12_HEAP_FLAG_NONE,
+			&CD3DX12_RESOURCE_DESC::Buffer(desc.ByteWidth),
+			D3D12_RESOURCE_STATE_COPY_DEST,
+			nullptr,
+			IID_PPV_ARGS(&_indexBuffer));
+
+
+		_indexBufferView.BufferLocation = _indexBuffer->GetGPUVirtualAddress();
+		_indexBufferView.SizeInBytes = desc.ByteWidth;
+		_indexBufferView.Format = DXGI_FORMAT_R32_UINT;
+
+
+		cmdList->CopyBufferRegion(_indexBuffer.Get(), 0, uploadBuffer.Get(), 0, desc.ByteWidth);
+
+		CD3DX12_RESOURCE_BARRIER barriers[1] = {
+			CD3DX12_RESOURCE_BARRIER::Transition(_indexBuffer.Get(),
+			D3D12_RESOURCE_STATE_COPY_DEST, D3D12_RESOURCE_STATE_INDEX_BUFFER)
+		};
+
+
+		cmdList->ResourceBarrier(1, barriers);
+		renderer->EndCommandList();
+		renderer->WaitCommandsQueue();
+	}
+	index_count_t GetIndicesCount() const {
+		return _indexCount;
+	}
+private:
+	index_count_t _indexCount;
+	MeshTopology _topology;
+	ID3D12ResourcePtr _indexBuffer;
+	D3D12_INDEX_BUFFER_VIEW _indexBufferView;
+};
+
+typedef std::shared_ptr<Submesh> SubmeshPtr;
+#endif // Submesh_h__