#include <d3d11.h>
#include <d3d12.h>
#include <dxgi1_6.h>
#include <dxgidebug.h>

#include "Bild.h"
#include "d3dx12.h"
#include "DLLRegister.h"
#include "DX12Buffer.h"
#include "DX12CommandQueue.h"
#include "DX12PixelShader.h"
#include "DX12Shader.h"
#include "DX12Textur.h"
#include "DX12VertexShader.h"
#include "Fenster.h"
#include "Globals.h"
#include "GraphicsApi.h"
#include "Kam3D.h"
#include "Model3D.h"
#include "Model3DList.h"
#include "Shader.h"
#include "TexturList.h"
#include "TexturModel.h"
#include "Welt3D.h"

using namespace Framework;

DirectX12::DirectX12()
    : GraphicsApi(DIRECTX12),
      debug(0),
      device(0),
      infoQueue(0),
      directCommandQueue(0),
      copyCommandQueue(0),
      computeCommandQueue(0),
      swapChain(0),
      rtvHeap(0),
      dsvHeap(0),
      shaderBufferHeap(0),
      depthBuffer(0),
      backBufferIndex(0),
      tearing(0),
      viewPort(0),
      allowedRenderArea(0),
      vertexBufferView(0),
      indexBufferView(0),
      signature(0),
      pipeline(0),
      texturModel(0),
      uiTextur(0),
      texturRegister(new TexturList()),
      vertexShader(0),
      pixelShader(0)
{
    for (int i = 0; i < 2; i++)
        backBuffer[i] = 0;
}

DirectX12::~DirectX12()
{
    if (directCommandQueue)
    {
        directCommandQueue->flush();
        directCommandQueue->release();
    }
    if (copyCommandQueue)
    {
        copyCommandQueue->flush();
        copyCommandQueue->release();
    }
    if (computeCommandQueue)
    {
        computeCommandQueue->flush();
        computeCommandQueue->release();
    }
    if (depthBuffer) depthBuffer->Release();
    if (dsvHeap) dsvHeap->Release();
    if (shaderBufferHeap) shaderBufferHeap->Release();
    if (vertexShader) vertexShader->release();
    if (pixelShader) pixelShader->release();
    texturRegister->release();
    if (uiTextur) uiTextur->release();
    if (texturModel) texturModel->release();
    if (pipeline) pipeline->Release();
    if (signature) signature->Release();
    delete indexBufferView;
    delete vertexBufferView;
    delete allowedRenderArea;
    delete viewPort;
    for (int i = 0; i < 2; i++)
    {
        if (backBuffer[i]) backBuffer[i]->Release();
    }
    if (rtvHeap) rtvHeap->Release();
    if (swapChain) swapChain->Release();
    if (infoQueue) infoQueue->Release();
    if (device)
    {
        device->Release();
        getDLLRegister()->releaseDLL("dxgi.dll");
        getDLLRegister()->releaseDLL("d3d12.dll");
    }
    if (debug) debug->Release();
}

typedef HRESULT(__stdcall* CreateDXGIFactory2Function)(UINT, REFIID, void**);

typedef HRESULT(__stdcall* D3D12CreateDeviceFunction)(
    IDXGIAdapter*, D3D_FEATURE_LEVEL, REFIID, void**);

typedef HRESULT(__stdcall* D3D12GetDebugInterfaceFunction)(REFIID, void**);

typedef HRESULT(__stdcall* DXGIGetDebugInterface1Function)(
    UINT Flags, REFIID riid, _COM_Outptr_ void** pDebug);

void DirectX12::initialize(
    WFenster* fenster, Vec2<int> backBufferSize, bool fullScreen)
{
    if (device)
        return GraphicsApi::initialize(fenster, backBufferSize, fullScreen);
    GraphicsApi::initialize(fenster, backBufferSize, fullScreen);

    HINSTANCE dxgiDLL = getDLLRegister()->ladeDLL("dxgi.dll", "dxgi.dll");
    if (!dxgiDLL)
    {
        WMessageBox(fenster->getFensterHandle(),
            new Text("Fehler"),
            new Text("dxgi.dll konnte nicht gefunden werden."),
            MB_ICONERROR);
        return;
    }
    HINSTANCE d3d12DLL = getDLLRegister()->ladeDLL("d3d12.dll", "d3d12.dll");
    if (!d3d12DLL)
    {
        getDLLRegister()->releaseDLL("dxgi.dll");
        WMessageBox(fenster->getFensterHandle(),
            new Text("Fehler"),
            new Text("DirectX 12 konnte nicht gefunden werden."),
            MB_ICONERROR);
        return;
    }
    CreateDXGIFactory2Function createFactory
        = (CreateDXGIFactory2Function)GetProcAddress(
            dxgiDLL, "CreateDXGIFactory2");
    if (!createFactory)
    {
        getDLLRegister()->releaseDLL("dxgi.dll");
        getDLLRegister()->releaseDLL("d3d12.dll");
        WMessageBox(fenster->getFensterHandle(),
            new Text("Fehler"),
            new Text("Der Einstiegspunkt CreateDXGIFactory2 fon DXGI konnte "
                     "nicht gefunden werden."),
            MB_ICONERROR);
        return;
    }
    D3D12CreateDeviceFunction createDevice
        = (D3D12CreateDeviceFunction)GetProcAddress(
            d3d12DLL, "D3D12CreateDevice");
    if (!createDevice)
    {
        getDLLRegister()->releaseDLL("dxgi.dll");
        getDLLRegister()->releaseDLL("d3d12.dll");
        WMessageBox(fenster->getFensterHandle(),
            new Text("Fehler"),
            new Text("Der Einstiegspunkt D3D12CreateDevice fon DirectX 12 "
                     "konnte nicht gefunden werden."),
            MB_ICONERROR);
        return;
    }
    PFN_D3D12_SERIALIZE_VERSIONED_ROOT_SIGNATURE d3d12svrsf
        = (PFN_D3D12_SERIALIZE_VERSIONED_ROOT_SIGNATURE)GetProcAddress(
            d3d12DLL, "D3D12SerializeVersionedRootSignature");
    PFN_D3D12_SERIALIZE_ROOT_SIGNATURE d3d12srsf
        = (PFN_D3D12_SERIALIZE_ROOT_SIGNATURE)GetProcAddress(
            d3d12DLL, "D3D12SerializeRootSignature");
    bool debugDXGI = 0;
#ifdef _DEBUG
    IDXGIInfoQueue* dxgiInfoQueue;
    if (debugDX)
    {
        D3D12GetDebugInterfaceFunction getDebugInterface
            = (D3D12GetDebugInterfaceFunction)GetProcAddress(
                d3d12DLL, "D3D12GetDebugInterface");
        if (SUCCEEDED(getDebugInterface(__uuidof(ID3D12Debug), (void**)&debug)))
            debug->EnableDebugLayer();
        DXGIGetDebugInterface1Function dxgiDebugInterface
            = (DXGIGetDebugInterface1Function)GetProcAddress(
                dxgiDLL, "DXGIGetDebugInterface1");
        if (SUCCEEDED(dxgiDebugInterface(
                0, __uuidof(IDXGIInfoQueue), (void**)&dxgiInfoQueue)))
            debugDXGI = 1;
    }
#endif
    IDXGIFactory6* factory;
    UINT createFactoryFlags = 0;
#if defined(_DEBUG)
    if (debugDX && debugDXGI) createFactoryFlags = DXGI_CREATE_FACTORY_DEBUG;
#endif
    HRESULT res = createFactory(
        createFactoryFlags, __uuidof(IDXGIFactory6), (void**)&factory);
    if (FAILED(res))
    {
        getDLLRegister()->releaseDLL("dxgi.dll");
        getDLLRegister()->releaseDLL("d3d12.dll");
        std::cout << "ERROR: createFactory returned " << res << "\n";
        WMessageBox(fenster->getFensterHandle(),
            new Text("Fehler"),
            new Text("createFactory ist Fehlgeschlagen."),
            MB_ICONERROR);
        return;
    }
    IDXGIAdapter1* adapter = 0;
    for (UINT adapterID = 0; DXGI_ERROR_NOT_FOUND
                             != factory->EnumAdapterByGpuPreference(adapterID,
                                 DXGI_GPU_PREFERENCE_HIGH_PERFORMANCE,
                                 __uuidof(IDXGIAdapter1),
                                 (void**)&adapter);
         ++adapterID)
    {
        DXGI_ADAPTER_DESC1 desc;
        adapter->GetDesc1(&desc);

        if (desc.Flags & DXGI_ADAPTER_FLAG_SOFTWARE)
        {
            // Don't select the Basic Render Driver adapter.
            continue;
        }

        // Check to see if the adapter supports Direct3D 12, but don't create
        // the actual device yet.
        if (SUCCEEDED(createDevice(adapter,
                D3D_FEATURE_LEVEL_12_1,
                _uuidof(ID3D12Device),
                nullptr)))
        {
            char buff[256] = {};
            printf_s(buff,
                L"Direct3D Adapter (%u): VID:%04X, PID:%04X - %ls\n",
                adapterID,
                desc.VendorId,
                desc.DeviceId,
                desc.Description);
            std::cout << buff;
            break;
        }
    }
    if (!adapter)
    {
        if (FAILED(factory->EnumWarpAdapter(
                _uuidof(IDXGIAdapter1), (void**)&adapter)))
            std::cout << "ERROR: WARP12 not available. Enable the 'Graphics "
                         "Tools' optional feature";
    }
    if (!adapter)
    {
        factory->Release();
        getDLLRegister()->releaseDLL("dxgi.dll");
        getDLLRegister()->releaseDLL("d3d12.dll");
        WMessageBox(fenster->getFensterHandle(),
            new Text("Fehler"),
            new Text("Es wurde keine passende Grafigkarte gefunden."),
            MB_ICONERROR);
        return;
    }
    res = createDevice(adapter,
        D3D_FEATURE_LEVEL_12_1,
        __uuidof(ID3D12Device5),
        (void**)&device);
    adapter->Release();
    if (FAILED(res))
    {
        factory->Release();
        getDLLRegister()->releaseDLL("dxgi.dll");
        getDLLRegister()->releaseDLL("d3d12.dll");
        std::cout << "ERROR: createDevice returned " << res << "\n";
        WMessageBox(fenster->getFensterHandle(),
            new Text("Fehler"),
            new Text("createDevice ist Fehlgeschlagen."),
            MB_ICONERROR);
        return;
    }
    D3D12_FEATURE_DATA_D3D12_OPTIONS5 featureSupportData = {};
    device->CheckFeatureSupport(D3D12_FEATURE_D3D12_OPTIONS5,
        &featureSupportData,
        sizeof(featureSupportData));
    if (featureSupportData.RaytracingTier < D3D12_RAYTRACING_TIER_1_0)
    {
        device->Release();
        factory->Release();
        getDLLRegister()->releaseDLL("dxgi.dll");
        getDLLRegister()->releaseDLL("d3d12.dll");
        std::cout << "ERROR: Raytracing is not available\n";
        WMessageBox(fenster->getFensterHandle(),
            new Text("Fehler"),
            new Text("Raytracing ist nicht verfügbar. DirectX12 kann nicht "
                     "verwendet werden."),
            MB_ICONERROR);
        return;
    }
    res = device->QueryInterface(__uuidof(ID3D12InfoQueue), (void**)&infoQueue);
    if (SUCCEEDED(res))
    {
        if (debugDX)
        {
            infoQueue->SetBreakOnSeverity(
                D3D12_MESSAGE_SEVERITY_CORRUPTION, TRUE);
            infoQueue->SetBreakOnSeverity(D3D12_MESSAGE_SEVERITY_ERROR, TRUE);
            infoQueue->SetBreakOnSeverity(D3D12_MESSAGE_SEVERITY_WARNING, TRUE);
        }

        // Suppress individual messages by their ID
        D3D12_MESSAGE_ID DenyIds[] = {
            // D3D12_MESSAGE_ID_CLEARRENDERTARGETVIEW_MISMATCHINGCLEARVALUE, //
            // I'm really not sure how to avoid this message.
            D3D12_MESSAGE_ID_MAP_INVALID_NULLRANGE, // This warning occurs when
                                                    // using capture frame while
                                                    // graphics debugging.
            D3D12_MESSAGE_ID_UNMAP_INVALID_NULLRANGE, // This warning occurs
                                                      // when using capture
                                                      // frame while graphics
                                                      // debugging.
        };

        D3D12_INFO_QUEUE_FILTER NewFilter = {};
        NewFilter.DenyList.NumSeverities = 0; //_countof( Severities );
        NewFilter.DenyList.pSeverityList = 0; // Severities;
        NewFilter.DenyList.NumIDs = _countof(DenyIds);
        NewFilter.DenyList.pIDList = DenyIds;

        infoQueue->PushStorageFilter(&NewFilter);
    }

    directCommandQueue = new DX12DirectCommandQueue(device);
    copyCommandQueue = new DX12CopyCommandQueue(device);
    computeCommandQueue = new DX12ComputeCommandQueue(device);

    IDXGIFactory5* fac5 = 0;
    factory->QueryInterface(__uuidof(IDXGIFactory5), (void**)&fac5);
    if (fac5)
    {
        res = fac5->CheckFeatureSupport(
            DXGI_FEATURE_PRESENT_ALLOW_TEARING, &tearing, sizeof(tearing));
        if (FAILED(res)) tearing = 0;
        fac5->Release();
    }

    DXGI_SWAP_CHAIN_DESC1 swapChainDesc = {};
    swapChainDesc.Width = backBufferSize.x;
    swapChainDesc.Height = backBufferSize.y;
    swapChainDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
    swapChainDesc.Stereo = FALSE;
    swapChainDesc.SampleDesc = {1, 0};
    swapChainDesc.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
    swapChainDesc.BufferCount = 2;
    swapChainDesc.Scaling = DXGI_SCALING_STRETCH;
    swapChainDesc.SwapEffect = DXGI_SWAP_EFFECT_FLIP_DISCARD;
    swapChainDesc.AlphaMode = DXGI_ALPHA_MODE_IGNORE;
    swapChainDesc.Flags = tearing ? DXGI_SWAP_CHAIN_FLAG_ALLOW_TEARING : 0;
    IDXGISwapChain1* tmpSwapChain;
    res = factory->CreateSwapChainForHwnd(directCommandQueue->getQueue(),
        fenster->getFensterHandle(),
        &swapChainDesc,
        0,
        0,
        &tmpSwapChain);
    if (FAILED(res))
    {
        factory->Release();
        std::cout << "ERROR: CreateSwapChainForHwnd returned " << res << "\n";
        WMessageBox(fenster->getFensterHandle(),
            new Text("Fehler"),
            new Text("CreateSwapChainForHwnd ist Fehlgeschlagen."),
            MB_ICONERROR);
        return;
    }
    res = tmpSwapChain->QueryInterface(
        __uuidof(IDXGISwapChain4), (void**)&swapChain);
    tmpSwapChain->Release();
    if (FAILED(res))
    {
        factory->Release();
        std::cout << "ERROR: QueryInterface returned " << res << "\n";
        WMessageBox(fenster->getFensterHandle(),
            new Text("Fehler"),
            new Text("QueryInterface ist Fehlgeschlagen."),
            MB_ICONERROR);
        return;
    }
    factory->MakeWindowAssociation(
        fenster->getFensterHandle(), DXGI_MWA_NO_ALT_ENTER);

    D3D12_DESCRIPTOR_HEAP_DESC rtvhdesc = {};
    rtvhdesc.NumDescriptors = 2; // back buffer count
    rtvhdesc.Type = D3D12_DESCRIPTOR_HEAP_TYPE_RTV;
    res = device->CreateDescriptorHeap(
        &rtvhdesc, __uuidof(ID3D12DescriptorHeap), (void**)&rtvHeap);
    if (FAILED(res))
    {
        factory->Release();
        std::cout << "ERROR: CreateDescriptorHeap returned " << res << "\n";
        WMessageBox(fenster->getFensterHandle(),
            new Text("Fehler"),
            new Text("CreateDescriptorHeap ist Fehlgeschlagen."),
            MB_ICONERROR);
        return;
    }

    auto rtvDescriptorSize = device->GetDescriptorHandleIncrementSize(
        D3D12_DESCRIPTOR_HEAP_TYPE_RTV);
    D3D12_CPU_DESCRIPTOR_HANDLE rtvHandle(
        rtvHeap->GetCPUDescriptorHandleForHeapStart());

    for (int i = 0; i < 2; i++)
    {
        ID3D12Resource* backBuffer;
        res = swapChain->GetBuffer(
            i, __uuidof(ID3D12Resource), (void**)&backBuffer);
        if (FAILED(res))
        {
            factory->Release();
            std::cout << "ERROR: GetBuffer returned " << res << "\n";
            WMessageBox(fenster->getFensterHandle(),
                new Text("Fehler"),
                new Text("GetBuffer ist Fehlgeschlagen."),
                MB_ICONERROR);
            return;
        }

        device->CreateRenderTargetView(backBuffer, nullptr, rtvHandle);

        this->backBuffer[i] = backBuffer;

        rtvHandle.ptr += rtvDescriptorSize;
    }

    viewPort = new D3D12_VIEWPORT();
    viewPort->Width = (float)this->backBufferSize.x;
    viewPort->Height = (float)this->backBufferSize.y;
    viewPort->MinDepth = 0.0f;
    viewPort->MaxDepth = 1.0f;
    viewPort->TopLeftX = 0.0f;
    viewPort->TopLeftY = 0.0f;

    allowedRenderArea = new D3D12_RECT();
    allowedRenderArea->left = 0;
    allowedRenderArea->top = 0;
    allowedRenderArea->right = LONG_MAX;
    allowedRenderArea->bottom = LONG_MAX;

    texturModel = new TexturModel(this);

    Bild* renderB = new Bild(1);
    renderB->setAlpha3D(1);
    renderB->neuBild(this->backBufferSize.x, this->backBufferSize.y, 0);
    uiTextur = createOrGetTextur("_f_Render_Bild", renderB);

    texturModel->setSize(Vec2<float>(2.f, 2.f));
    texturModel->setTextur(dynamic_cast<Textur*>(uiTextur->getThis()));

    vertexBufferView = new D3D12_VERTEX_BUFFER_VIEW();
    vertexBufferView->StrideInBytes = sizeof(Vertex3D);

    indexBufferView = new D3D12_INDEX_BUFFER_VIEW();
    indexBufferView->Format = DXGI_FORMAT_R32_UINT;

    D3D12_CLEAR_VALUE optimizedClearValue = {};
    optimizedClearValue.Format = DXGI_FORMAT_D32_FLOAT;
    optimizedClearValue.DepthStencil = {1.0f, 0};
    CD3DX12_HEAP_PROPERTIES heapProp
        = CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_DEFAULT);
    CD3DX12_RESOURCE_DESC heapDesc = CD3DX12_RESOURCE_DESC::Tex2D(DXGI_FORMAT_D32_FLOAT,
        this->backBufferSize.x,
        this->backBufferSize.y,
        1,
        0,
        1,
        0,
        D3D12_RESOURCE_FLAG_ALLOW_DEPTH_STENCIL);
    res = device->CreateCommittedResource(&heapProp,
        D3D12_HEAP_FLAG_NONE,
        &heapDesc,
        D3D12_RESOURCE_STATE_DEPTH_WRITE,
        &optimizedClearValue,
        __uuidof(ID3D12Resource),
        (void**)&depthBuffer);
    if (FAILED(res))
    {
        factory->Release();
        std::cout << "ERROR: CreateCommittedResource returned " << res << "\n";
        WMessageBox(fenster->getFensterHandle(),
            new Text("Fehler"),
            new Text("CreateCommittedResource ist Fehlgeschlagen."),
            MB_ICONERROR);
        return;
    }

    D3D12_DESCRIPTOR_HEAP_DESC dsvHeapDesc = {};
    dsvHeapDesc.NumDescriptors = 1;
    dsvHeapDesc.Type = D3D12_DESCRIPTOR_HEAP_TYPE_DSV;
    dsvHeapDesc.Flags = D3D12_DESCRIPTOR_HEAP_FLAG_NONE;
    res = device->CreateDescriptorHeap(
        &dsvHeapDesc, __uuidof(ID3D12DescriptorHeap), (void**)&dsvHeap);
    if (FAILED(res))
    {
        factory->Release();
        std::cout << "ERROR: CreateDescriptorHeap returned " << res << "\n";
        WMessageBox(fenster->getFensterHandle(),
            new Text("Fehler"),
            new Text("CreateDescriptorHeap ist Fehlgeschlagen."),
            MB_ICONERROR);
        return;
    }

    D3D12_DEPTH_STENCIL_VIEW_DESC dsv = {};
    dsv.Format = DXGI_FORMAT_D32_FLOAT;
    dsv.ViewDimension = D3D12_DSV_DIMENSION_TEXTURE2D;
    dsv.Texture2D.MipSlice = 0;
    dsv.Flags = D3D12_DSV_FLAG_NONE;

    device->CreateDepthStencilView(
        depthBuffer, &dsv, dsvHeap->GetCPUDescriptorHandleForHeapStart());

    D3D12_DESCRIPTOR_HEAP_DESC sbheapDesc = {};
    sbheapDesc.NumDescriptors = 6;
    sbheapDesc.Type = D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV;
    sbheapDesc.Flags = D3D12_DESCRIPTOR_HEAP_FLAG_SHADER_VISIBLE;
    res = device->CreateDescriptorHeap(
        &sbheapDesc, __uuidof(ID3D12DescriptorHeap), (void**)&shaderBufferHeap);
    if (FAILED(res))
    {
        factory->Release();
        std::cout << "ERROR: CreateDescriptorHeap returned " << res << "\n";
        WMessageBox(fenster->getFensterHandle(),
            new Text("Fehler"),
            new Text("CreateDescriptorHeap ist Fehlgeschlagen."),
            MB_ICONERROR);
        return;
    }

    vertexShader
        = new DX12VertexShader(device, copyCommandQueue, directCommandQueue);
    vertexShader->setCompiledByteArray(
        (unsigned char*)DX12VertexShaderBytes, sizeof(DX12VertexShaderBytes));
    vertexShader->erstelleConstBuffer(sizeof(Mat4<float>) * 2, 0);
    vertexShader->erstelleConstBuffer(sizeof(Mat4<float>) * 128, 1);

    pixelShader
        = new DX12PixelShader(device, copyCommandQueue, directCommandQueue);
    pixelShader->setCompiledByteArray(
        (unsigned char*)DX12PixelShaderBytes, sizeof(DX12PixelShaderBytes));
    pixelShader->erstelleConstBuffer(sizeof(float) * 4, 2);
    pixelShader->erstelleConstBuffer(sizeof(float) * 3, 3);
    pixelShader->erstelleConstBuffer(sizeof(int) * 2, 4);

    D3D12_INPUT_ELEMENT_DESC inputLayout[] = {
        {"POSITION",
         0, DXGI_FORMAT_R32G32B32_FLOAT,
         0, D3D12_APPEND_ALIGNED_ELEMENT,
         D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0},
        {"TEXCOORD",
         0, DXGI_FORMAT_R32G32_FLOAT,
         0, D3D12_APPEND_ALIGNED_ELEMENT,
         D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0},
        {"NORMAL",
         0, DXGI_FORMAT_R32G32B32_FLOAT,
         0, D3D12_APPEND_ALIGNED_ELEMENT,
         D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0},
        {"KNOCHEN_ID",
         0, DXGI_FORMAT_R32_UINT,
         0, D3D12_APPEND_ALIGNED_ELEMENT,
         D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0},
        {"KNOCHEN_ID",
         0, DXGI_FORMAT_R32_UINT,
         0, D3D12_APPEND_ALIGNED_ELEMENT,
         D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0}
    };

    vertexShader->erstelleInputLayout(inputLayout, 5);

    D3D12_FEATURE_DATA_ROOT_SIGNATURE featureData = {};
    featureData.HighestVersion = D3D_ROOT_SIGNATURE_VERSION_1_1;
    if (FAILED(device->CheckFeatureSupport(
            D3D12_FEATURE_ROOT_SIGNATURE, &featureData, sizeof(featureData))))
        featureData.HighestVersion = D3D_ROOT_SIGNATURE_VERSION_1_0;

    D3D12_ROOT_SIGNATURE_FLAGS rootSignatureFlags
        = D3D12_ROOT_SIGNATURE_FLAG_ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT
        | D3D12_ROOT_SIGNATURE_FLAG_DENY_HULL_SHADER_ROOT_ACCESS
        | D3D12_ROOT_SIGNATURE_FLAG_DENY_DOMAIN_SHADER_ROOT_ACCESS
        | D3D12_ROOT_SIGNATURE_FLAG_DENY_GEOMETRY_SHADER_ROOT_ACCESS;

    D3D12_DESCRIPTOR_RANGE1 range[2];
    range[0].NumDescriptors = 5;
    range[0].BaseShaderRegister = 0;
    range[0].RegisterSpace = 0;
    range[0].RangeType = D3D12_DESCRIPTOR_RANGE_TYPE_CBV;
    range[0].OffsetInDescriptorsFromTableStart
        = D3D12_DESCRIPTOR_RANGE_OFFSET_APPEND;
    range[0].Flags = D3D12_DESCRIPTOR_RANGE_FLAG_NONE;
    range[1].NumDescriptors = 1;
    range[1].BaseShaderRegister = 0;
    range[1].RegisterSpace = 0;
    range[1].RangeType = D3D12_DESCRIPTOR_RANGE_TYPE_SRV;
    range[1].OffsetInDescriptorsFromTableStart
        = D3D12_DESCRIPTOR_RANGE_OFFSET_APPEND;
    range[1].Flags = D3D12_DESCRIPTOR_RANGE_FLAG_NONE;

    D3D12_ROOT_PARAMETER1 rootParameters[1];
    rootParameters[0].ParameterType
        = D3D12_ROOT_PARAMETER_TYPE_DESCRIPTOR_TABLE;
    rootParameters[0].ShaderVisibility = D3D12_SHADER_VISIBILITY_ALL;
    rootParameters[0].DescriptorTable.NumDescriptorRanges = 2;
    rootParameters[0].DescriptorTable.pDescriptorRanges = range;

    D3D12_STATIC_SAMPLER_DESC sampler = {};
    sampler.Filter = D3D12_FILTER_MIN_MAG_MIP_POINT;
    sampler.AddressU = D3D12_TEXTURE_ADDRESS_MODE_BORDER;
    sampler.AddressV = D3D12_TEXTURE_ADDRESS_MODE_BORDER;
    sampler.AddressW = D3D12_TEXTURE_ADDRESS_MODE_BORDER;
    sampler.MipLODBias = 0;
    sampler.MaxAnisotropy = 0;
    sampler.ComparisonFunc = D3D12_COMPARISON_FUNC_NEVER;
    sampler.BorderColor = D3D12_STATIC_BORDER_COLOR_TRANSPARENT_BLACK;
    sampler.MinLOD = 0.0f;
    sampler.MaxLOD = D3D12_FLOAT32_MAX;
    sampler.ShaderRegister = 0;
    sampler.RegisterSpace = 0;
    sampler.ShaderVisibility = D3D12_SHADER_VISIBILITY_PIXEL;

    D3D12_VERSIONED_ROOT_SIGNATURE_DESC rootSignatureDescription;
    rootSignatureDescription.Version = D3D_ROOT_SIGNATURE_VERSION_1_1;
    rootSignatureDescription.Desc_1_1.NumParameters = 1;
    rootSignatureDescription.Desc_1_1.pParameters = rootParameters;
    rootSignatureDescription.Desc_1_1.NumStaticSamplers = 1;
    rootSignatureDescription.Desc_1_1.pStaticSamplers = &sampler;
    rootSignatureDescription.Desc_1_1.Flags = rootSignatureFlags;

    ID3DBlob* rootSignature;
    ID3DBlob* error;
    res = D3DX12SerializeVersionedRootSignature(&rootSignatureDescription,
        featureData.HighestVersion,
        &rootSignature,
        &error,
        d3d12svrsf,
        d3d12srsf);
    if (FAILED(res))
    {
        factory->Release();
        std::cout << "ERROR: D3DX12SerializeVersionedRootSignature returned "
                  << res << "\n";
        WMessageBox(fenster->getFensterHandle(),
            new Text("Fehler"),
            new Text(
                "D3DX12SerializeVersionedRootSignature ist Fehlgeschlagen."),
            MB_ICONERROR);
        if (error) error->Release();
        return;
    }

    res = device->CreateRootSignature(0,
        rootSignature->GetBufferPointer(),
        rootSignature->GetBufferSize(),
        __uuidof(ID3D12RootSignature),
        (void**)&signature);
    if (FAILED(res))
    {
        factory->Release();
        std::cout << "ERROR: CreateRootSignature returned " << res << "\n";
        WMessageBox(fenster->getFensterHandle(),
            new Text("Fehler"),
            new Text("CreateRootSignature ist Fehlgeschlagen."),
            MB_ICONERROR);
        return;
    }
    rootSignature->Release();

    D3D12_RASTERIZER_DESC rdesc;
    rdesc.FillMode = D3D12_FILL_MODE_SOLID;
    rdesc.CullMode = D3D12_CULL_MODE_BACK;
    rdesc.FrontCounterClockwise = 0;
    rdesc.DepthBias = 0;
    rdesc.DepthBiasClamp = 0.f;
    rdesc.SlopeScaledDepthBias = 0.f;
    rdesc.DepthClipEnable = 1;
    rdesc.MultisampleEnable = 0;
    rdesc.AntialiasedLineEnable = 0;
    rdesc.ForcedSampleCount = 0;
    rdesc.ConservativeRaster = D3D12_CONSERVATIVE_RASTERIZATION_MODE_OFF;

    D3D12_GRAPHICS_PIPELINE_STATE_DESC psoDesc = {};
    psoDesc.InputLayout = {vertexShader->zInputLayout(),
        (unsigned)vertexShader->getInputLayoutSize()};
    psoDesc.pRootSignature = signature;
    psoDesc.VS = {vertexShader->getCompiledShader(),
        (unsigned __int64)vertexShader->getCompiledLength()};
    psoDesc.PS = {pixelShader->getCompiledShader(),
        (unsigned __int64)pixelShader->getCompiledLength()};
    psoDesc.RasterizerState = rdesc;
    psoDesc.BlendState = CD3DX12_BLEND_DESC(D3D12_DEFAULT);
    psoDesc.DepthStencilState.DepthEnable = FALSE;
    psoDesc.DepthStencilState.StencilEnable = FALSE;
    psoDesc.SampleMask = UINT_MAX;
    psoDesc.PrimitiveTopologyType = D3D12_PRIMITIVE_TOPOLOGY_TYPE_TRIANGLE;
    psoDesc.NumRenderTargets = 1;
    psoDesc.RTVFormats[0] = DXGI_FORMAT_R8G8B8A8_UNORM;
    psoDesc.SampleDesc.Count = 1;

    D3D12_CPU_DESCRIPTOR_HANDLE sbHeapHandle
        = shaderBufferHeap->GetCPUDescriptorHandleForHeapStart();
    unsigned int incr = device->GetDescriptorHandleIncrementSize(
        D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
    D3D12_CONSTANT_BUFFER_VIEW_DESC desc;
    vertexShader->getViewDesc(0, desc);
    device->CreateConstantBufferView(&desc, sbHeapHandle);
    res = device->GetDeviceRemovedReason();
    sbHeapHandle.ptr += incr;
    vertexShader->getViewDesc(1, desc);
    device->CreateConstantBufferView(&desc, sbHeapHandle);
    sbHeapHandle.ptr += incr;
    pixelShader->getViewDesc(2, desc);
    device->CreateConstantBufferView(&desc, sbHeapHandle);
    sbHeapHandle.ptr += incr;
    pixelShader->getViewDesc(3, desc);
    device->CreateConstantBufferView(&desc, sbHeapHandle);
    sbHeapHandle.ptr += incr;
    pixelShader->getViewDesc(4, desc);
    device->CreateConstantBufferView(&desc, sbHeapHandle);
    sbHeapHandle.ptr += incr;

    uiTextur->updateTextur();

    D3D12_SHADER_RESOURCE_VIEW_DESC vd;
    vd.Format = DXGI_FORMAT_B8G8R8A8_UNORM;
    vd.ViewDimension = D3D12_SRV_DIMENSION_TEXTURE2D;
    vd.Shader4ComponentMapping = D3D12_DEFAULT_SHADER_4_COMPONENT_MAPPING;
    vd.Texture2D.MipLevels = 1;
    vd.Texture2D.MostDetailedMip = 0;
    vd.Texture2D.PlaneSlice = 0;
    vd.Texture2D.ResourceMinLODClamp = 0;
    device->CreateShaderResourceView(
        ((DX12Textur*)uiTextur)->getResource(), &vd, sbHeapHandle);

    directCommandQueue->execute();

    res = device->CreateGraphicsPipelineState(
        &psoDesc, __uuidof(ID3D12PipelineState), (void**)&pipeline);
    if (FAILED(res))
    {
        factory->Release();
        std::cout << "ERROR: CreatePipelineState returned " << res << "\n";
        WMessageBox(fenster->getFensterHandle(),
            new Text("Fehler"),
            new Text("CreatePipelineState ist Fehlgeschlagen."),
            MB_ICONERROR);
        return;
    }

    factory->Release();
}

void DirectX12::update()
{
    if (!device || !swapChain || !directCommandQueue) return;
    directCommandQueue->flush();
    copyCommandQueue->flush();
    computeCommandQueue->flush();
    modelList->removeAll();
    HINSTANCE dxgiDLL = getDLLRegister()->ladeDLL("dxgi.dll", "dxgi.dll");
    if (!dxgiDLL)
    {
        WMessageBox(fenster->getFensterHandle(),
            new Text("Fehler"),
            new Text("dxgi.dll konnte nicht gefunden werden."),
            MB_ICONERROR);
        return;
    }
    CreateDXGIFactory2Function createFactory
        = (CreateDXGIFactory2Function)GetProcAddress(
            dxgiDLL, "CreateDXGIFactory2");
    if (!createFactory)
    {
        getDLLRegister()->releaseDLL("dxgi.dll");
        WMessageBox(fenster->getFensterHandle(),
            new Text("Fehler"),
            new Text("Der Einstiegspunkt CreateDXGIFactory2 fon DXGI konnte "
                     "nicht gefunden werden."),
            MB_ICONERROR);
        return;
    }
    DXGI_SWAP_CHAIN_DESC swapChainDesc = {};
    HRESULT res = swapChain->GetDesc(&swapChainDesc);
    if (FAILED(res))
    {
        getDLLRegister()->releaseDLL("dxgi.dll");
        std::cout << "ERROR: GetDesc returned " << res << "\n";
        WMessageBox(fenster->getFensterHandle(),
            new Text("Fehler"),
            new Text("GetDesc ist Fehlgeschlagen."),
            MB_ICONERROR);
        return;
    }
    IDXGIFactory4* factory;
    UINT createFactoryFlags = 0;
#if defined(_DEBUG)
    createFactoryFlags = DXGI_CREATE_FACTORY_DEBUG;
#endif
    res = createFactory(
        createFactoryFlags, __uuidof(IDXGIFactory4), (void**)&factory);
    if (FAILED(res))
    {
        getDLLRegister()->releaseDLL("dxgi.dll");
        std::cout << "ERROR: createFactory returned " << res << "\n";
        WMessageBox(fenster->getFensterHandle(),
            new Text("Fehler"),
            new Text("createFactory ist Fehlgeschlagen."),
            MB_ICONERROR);
        return;
    }
    for (int i = 0; i < 2; ++i)
    {
        backBuffer[i]->Release();
        backBuffer[i] = 0;
    }
    res = swapChain->ResizeBuffers(2,
        backBufferSize.x,
        backBufferSize.y,
        swapChainDesc.BufferDesc.Format,
        swapChainDesc.Flags);
    backBufferIndex = swapChain->GetCurrentBackBufferIndex();

    auto rtvDescriptorSize = device->GetDescriptorHandleIncrementSize(
        D3D12_DESCRIPTOR_HEAP_TYPE_RTV);
    D3D12_CPU_DESCRIPTOR_HANDLE rtvHandle(
        rtvHeap->GetCPUDescriptorHandleForHeapStart());

    for (int i = 0; i < 2; i++)
    {
        ID3D12Resource* backBuffer;
        res = swapChain->GetBuffer(
            i, __uuidof(ID3D12Resource), (void**)&backBuffer);
        if (FAILED(res))
        {
            getDLLRegister()->releaseDLL("dxgi.dll");
            factory->Release();
            std::cout << "ERROR: GetBuffer returned " << res << "\n";
            WMessageBox(fenster->getFensterHandle(),
                new Text("Fehler"),
                new Text("GetBuffer ist Fehlgeschlagen."),
                MB_ICONERROR);
            return;
        }

        device->CreateRenderTargetView(backBuffer, nullptr, rtvHandle);

        this->backBuffer[i] = backBuffer;

        rtvHandle.ptr += rtvDescriptorSize;
    }
    getDLLRegister()->releaseDLL("dxgi.dll");

    delete viewPort;
    viewPort = new D3D12_VIEWPORT();
    viewPort->Width = (float)this->backBufferSize.x;
    viewPort->Height = (float)this->backBufferSize.y;
    viewPort->MinDepth = 0.0f;
    viewPort->MaxDepth = 1.0f;
    viewPort->TopLeftX = 0.0f;
    viewPort->TopLeftY = 0.0f;

    depthBuffer->Release();

    D3D12_CLEAR_VALUE optimizedClearValue = {};
    optimizedClearValue.Format = DXGI_FORMAT_D32_FLOAT;
    optimizedClearValue.DepthStencil = {1.0f, 0};
    CD3DX12_HEAP_PROPERTIES heapProps
        = CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_DEFAULT);
    CD3DX12_RESOURCE_DESC heapDesc
        = CD3DX12_RESOURCE_DESC::Tex2D(DXGI_FORMAT_D32_FLOAT,
            this->backBufferSize.x,
            this->backBufferSize.y,
            1,
            0,
            1,
            0,
            D3D12_RESOURCE_FLAG_ALLOW_DEPTH_STENCIL);
    res = device->CreateCommittedResource(&heapProps,
        D3D12_HEAP_FLAG_NONE,
        &heapDesc,
        D3D12_RESOURCE_STATE_DEPTH_WRITE,
        0,
        __uuidof(ID3D12Resource),
        (void**)&depthBuffer);
    if (FAILED(res))
    {
        factory->Release();
        std::cout << "ERROR: CreateCommittedResource returned " << res << "\n";
        WMessageBox(fenster->getFensterHandle(),
            new Text("Fehler"),
            new Text("CreateCommittedResource ist Fehlgeschlagen."),
            MB_ICONERROR);
        return;
    }

    D3D12_DEPTH_STENCIL_VIEW_DESC dsv = {};
    dsv.Format = DXGI_FORMAT_D32_FLOAT;
    dsv.ViewDimension = D3D12_DSV_DIMENSION_TEXTURE2D;
    dsv.Texture2D.MipSlice = 0;
    dsv.Flags = D3D12_DSV_FLAG_NONE;

    device->CreateDepthStencilView(
        depthBuffer, &dsv, dsvHeap->GetCPUDescriptorHandleForHeapStart());

    if (uiTextur) uiTextur->release();

    Bild* renderB = new Bild(1);
    renderB->setAlpha3D(1);
    renderB->neuBild(this->backBufferSize.x, this->backBufferSize.y, 0);
    uiTextur = createOrGetTextur("_f_Render_Bild", renderB);

    texturModel->setTextur(dynamic_cast<Textur*>(uiTextur->getThis()));

    factory->Release();
}

void DirectX12::beginFrame(bool fill2D, bool fill3D, int fillColor)
{
    D3D12_RESOURCE_BARRIER barrier;
    ZeroMemory(&barrier, sizeof(barrier));
    barrier.Type = D3D12_RESOURCE_BARRIER_TYPE_TRANSITION;
    barrier.Flags = D3D12_RESOURCE_BARRIER_FLAG_NONE;
    barrier.Transition.pResource = this->backBuffer[backBufferIndex];
    barrier.Transition.StateBefore = D3D12_RESOURCE_STATE_PRESENT;
    barrier.Transition.StateAfter = D3D12_RESOURCE_STATE_RENDER_TARGET;
    barrier.Transition.Subresource = D3D12_RESOURCE_BARRIER_ALL_SUBRESOURCES;

    directCommandQueue->getCommandList()->ResourceBarrier(1, &barrier);

    if (fill2D) uiTextur->zBild()->setFarbe(fillColor);
    if (fill3D)
    {
        float color[4];
        // Setup the color to clear the buffer.
        color[0] = ((fillColor >> 16) & 0xFF) / 255.f; // R
        color[1] = ((fillColor >> 8) & 0xFF) / 255.f;  // G
        color[2] = (fillColor & 0xFF) / 255.f;         // B
        color[3] = ((fillColor >> 24) & 0xFF) / 255.f; // A

        auto rtvDescriptorSize = device->GetDescriptorHandleIncrementSize(
            D3D12_DESCRIPTOR_HEAP_TYPE_RTV);
        D3D12_CPU_DESCRIPTOR_HANDLE rtv
            = rtvHeap->GetCPUDescriptorHandleForHeapStart();
        rtv.ptr += rtvDescriptorSize * backBufferIndex;

        directCommandQueue->getCommandList()->OMSetRenderTargets(1, &rtv, 0, 0);
        directCommandQueue->getCommandList()->ClearRenderTargetView(
            rtv, color, 0, 0);
    }
    int lc[] = {0, 0};
    pixelShader->füllConstBuffer((char*)lc, 4, sizeof(int) * 2);
}

void DirectX12::renderObject(Model3D* zObj)
{
    Mat4<float> trans = Mat4<float>::identity();
    zObj->zModelData()->zDXVertexBuffer()->copieren();
    zObj->zModelData()->zDXIndexBuffer()->copieren();
    int anz = zObj->errechneMatrizen(trans, matrixBuffer);
    if (vertexShader)
        vertexShader->füllConstBuffer(
            (char*)matrixBuffer, 1, sizeof(Mat4<float>) * anz);
    float matirialBuffer[3]; // light factors (phong model)
    matirialBuffer[0] = zObj->getAmbientFactor();
    matirialBuffer[1] = zObj->getDiffusFactor();
    matirialBuffer[2] = zObj->getSpecularFactor();
    if (pixelShader)
        pixelShader->füllConstBuffer(
            (char*)matirialBuffer, 3, sizeof(float) * 3);
    unsigned int offset = 0;
    unsigned int es
        = (unsigned)zObj->zModelData()->zDXVertexBuffer()->getElementLength();
    Model3DTextur* zTextur = zObj->zTextur();
    int ind = 0;
    zObj->beforeRender(this, vertexShader, pixelShader);
    for (auto i = zObj->zModelData()->getPolygons(); i; i++)
    {
        if (zObj->needRenderPolygon(ind))
        {
            Textur* t = zTextur->zPolygonTextur(ind);
            // if( t &&t->brauchtUpdate() )
            //     t->updateTextur();
            DXGI_FORMAT f = DXGI_FORMAT_R32_UINT;
            if (zObj->zModelData()->zDXIndexBuffer()->getElementLength() == 2)
                f = DXGI_FORMAT_R16_UINT;
            if (zObj->zModelData()->zDXIndexBuffer()->getElementLength() == 1)
                f = DXGI_FORMAT_R8_UINT;
            indexBufferView->Format = f;
            if (t)
            {
                /*ID3D11ShaderResourceView *v[ 3 ];
                v[ 0 ] = *(DX11Textur *)t;
                v[ 1 ] = *diffuseLights;
                v[ 2 ] = *pointLights;
                d3d11Context->PSSetShaderResources( 0, 3, v );
                d3d11Context->DrawIndexed( indexBuffer->getElementAnzahl(), 0, 0
                );*/
                directCommandQueue->getCommandList()->SetPipelineState(
                    pipeline);
                directCommandQueue->getCommandList()->SetGraphicsRootSignature(
                    signature);
                directCommandQueue->getCommandList()->SetDescriptorHeaps(
                    1, &shaderBufferHeap);
                directCommandQueue->getCommandList()
                    ->SetGraphicsRootDescriptorTable(0,
                        shaderBufferHeap->GetGPUDescriptorHandleForHeapStart());
                directCommandQueue->getCommandList()->RSSetViewports(
                    1, viewPort);
                directCommandQueue->getCommandList()->RSSetScissorRects(
                    1, allowedRenderArea);
                auto rtvDescriptorSize
                    = device->GetDescriptorHandleIncrementSize(
                        D3D12_DESCRIPTOR_HEAP_TYPE_RTV);
                D3D12_CPU_DESCRIPTOR_HANDLE rtv
                    = rtvHeap->GetCPUDescriptorHandleForHeapStart();
                rtv.ptr += rtvDescriptorSize * backBufferIndex;
                directCommandQueue->getCommandList()->OMSetRenderTargets(
                    1, &rtv, 0, 0);
                indexBufferView->SizeInBytes
                    = zObj->zModelData()->zDXIndexBuffer()->getElementAnzahl()
                    * zObj->zModelData()->zDXIndexBuffer()->getElementLength();
                indexBufferView->BufferLocation
                    = ((DX12Buffer*)zObj->zModelData()->zDXIndexBuffer())
                          ->zBuffer()
                          ->GetGPUVirtualAddress();
                directCommandQueue->getCommandList()->IASetIndexBuffer(
                    indexBufferView);
                vertexBufferView->SizeInBytes
                    = zObj->zModelData()->zDXVertexBuffer()->getElementAnzahl()
                    * zObj->zModelData()->zDXVertexBuffer()->getElementLength();
                vertexBufferView->BufferLocation
                    = ((DX12Buffer*)zObj->zModelData()->zDXVertexBuffer())
                          ->zBuffer()
                          ->GetGPUVirtualAddress();
                directCommandQueue->getCommandList()->IASetVertexBuffers(
                    0, 1, vertexBufferView);
                directCommandQueue->getCommandList()->IASetPrimitiveTopology(
                    D3D_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
                directCommandQueue->getCommandList()->DrawIndexedInstanced(
                    zObj->zModelData()->zDXIndexBuffer()->getElementAnzahl(),
                    1,
                    0,
                    0,
                    0);
            }
            else
            {
                /*d3d11Context->RSSetState( meshRS );
                ID3D11ShaderResourceView *v[ 3 ];
                v[ 0 ] = *(DX11Textur *)defaultTextur;
                v[ 1 ] = *diffuseLights;
                v[ 2 ] = *pointLights;
                d3d11Context->PSSetShaderResources( 0, 3, v );
                d3d11Context->DrawIndexed( indexBuffer->getElementAnzahl(), 0, 0
                ); d3d11Context->RSSetState( texturRS );*/
                // directCommandQueue->getCommandList()->DrawIndexedInstanced(
                // indexBuffer->getElementAnzahl(), 1, 0, 0, 0 );
            }
        }
        ind++;
    }
    zObj->afterRender(this, pixelShader, vertexShader);
}

// Überprüft, ob eine Kugel in dem Sichtbaren Raum der Welt liegt und gezeichnet
// werden muss
//  pos: Der Mittelpunkt der Kugel
//  radius: Der Radius der Kugel
//  dist: Einen Zeiger auf einen float, in dem das quadrat des Abstands zur
//  Kammeraposition gespeichert wird, falls diese Funktion true zurückgiebt und
//  der Zeiger nicht 0 ist
bool DirectX12::isInFrustrum(
    const Vec3<float>& pos, float radius, float* dist) const
{
    for (int i = 0; i < 6; i++)
    {
        if (frustrum[i] * pos + radius < 0) return 0;
    }
    if (dist) *dist = kamPos.abstand(pos);
    return 1;
}

void DirectX12::renderKamera(Kam3D* zKamera)
{
    directCommandQueue->getCommandList()->RSSetViewports(
        1, (D3D12_VIEWPORT*)zKamera->zViewPort());

    Mat4<float> tmp = zKamera->getProjectionMatrix() * zKamera->getViewMatrix();

    frustrum[0].x = tmp.elements[3][0] + tmp.elements[0][0];
    frustrum[0].y = tmp.elements[3][1] + tmp.elements[0][1];
    frustrum[0].z = tmp.elements[3][2] + tmp.elements[0][2];
    frustrum[0].w = tmp.elements[3][3] + tmp.elements[0][3];

    frustrum[1].x = tmp.elements[3][0] - tmp.elements[0][0];
    frustrum[1].y = tmp.elements[3][1] - tmp.elements[0][1];
    frustrum[1].z = tmp.elements[3][2] - tmp.elements[0][2];
    frustrum[1].w = tmp.elements[3][3] - tmp.elements[0][3];

    frustrum[2].x = tmp.elements[3][0] - tmp.elements[1][0];
    frustrum[2].y = tmp.elements[3][1] - tmp.elements[1][1];
    frustrum[2].z = tmp.elements[3][2] - tmp.elements[1][2];
    frustrum[2].w = tmp.elements[3][3] - tmp.elements[1][3];

    frustrum[3].x = tmp.elements[3][0] + tmp.elements[1][0];
    frustrum[3].y = tmp.elements[3][1] + tmp.elements[1][1];
    frustrum[3].z = tmp.elements[3][2] + tmp.elements[1][2];
    frustrum[3].w = tmp.elements[3][3] + tmp.elements[1][3];

    frustrum[4].x = tmp.elements[2][0];
    frustrum[4].y = tmp.elements[2][1];
    frustrum[4].z = tmp.elements[2][2];
    frustrum[4].w = tmp.elements[2][3];

    frustrum[5].x = tmp.elements[3][0] - tmp.elements[2][0];
    frustrum[5].y = tmp.elements[3][1] - tmp.elements[2][1];
    frustrum[5].z = tmp.elements[3][2] - tmp.elements[2][2];
    frustrum[5].w = tmp.elements[3][3] - tmp.elements[2][3];

    for (int i = 0; i < 6; i++)
        frustrum[i].normalize();

    viewAndProj[0] = zKamera->getViewMatrix();
    viewAndProj[1] = zKamera->getProjectionMatrix();
    kamPos = zKamera->getWorldPosition();
    if (vertexShader)
        vertexShader->füllConstBuffer(
            (char*)viewAndProj, 0, sizeof(Mat4<float>) * 2);
    if (pixelShader)
        pixelShader->füllConstBuffer((char*)&kamPos, 2, sizeof(float) * 3);
    Welt3D* w = zKamera->zWelt();
    w->render([this](Model3D* obj) {
        if (isInFrustrum(obj->getPos(), obj->getRadius())) renderObject(obj);
    });
}

void DirectX12::presentFrame()
{
    directCommandQueue->getCommandList()->RSSetViewports(1, viewPort);

    viewAndProj[0] = Mat4<float>::identity();
    viewAndProj[1] = Mat4<float>::identity();
    if (vertexShader)
        vertexShader->füllConstBuffer(
            (char*)viewAndProj, 0, sizeof(Mat4<float>) * 2);

    uiTextur->updateTextur();

    if (fenster && !IsIconic(fenster->getFensterHandle()))
        renderObject(texturModel);

    D3D12_RESOURCE_BARRIER barrier;
    ZeroMemory(&barrier, sizeof(barrier));
    barrier.Type = D3D12_RESOURCE_BARRIER_TYPE_TRANSITION;
    barrier.Flags = D3D12_RESOURCE_BARRIER_FLAG_NONE;
    barrier.Transition.pResource = this->backBuffer[backBufferIndex];
    barrier.Transition.StateBefore = D3D12_RESOURCE_STATE_RENDER_TARGET;
    barrier.Transition.StateAfter = D3D12_RESOURCE_STATE_PRESENT;
    barrier.Transition.Subresource = D3D12_RESOURCE_BARRIER_ALL_SUBRESOURCES;

    directCommandQueue->getCommandList()->ResourceBarrier(1, &barrier);
    copyCommandQueue->execute();
    directCommandQueue->execute();

    swapChain->Present(0, 0);

    backBufferIndex = swapChain->GetCurrentBackBufferIndex();
}

Textur* DirectX12::createOrGetTextur(const char* name, Bild* b)
{
    if (!device)
    {
        if (b) b->release();
        return 0;
    }
    if (texturRegister->hatTextur(name))
    {
        Textur* ret = texturRegister->getTextur(name);
        if (b) ret->setBildZ(b);
        return ret;
    }
    Textur* ret = new DX12Textur(device, copyCommandQueue, directCommandQueue);
    if (b) ret->setBildZ(b);
    texturRegister->addTextur(dynamic_cast<Textur*>(ret->getThis()), name);
    ret->updateTextur();
    copyCommandQueue->execute();
    directCommandQueue->execute();
    return ret;
}

Bild* DirectX12::zUIRenderBild() const
{
    return uiTextur ? uiTextur->zBild() : 0;
}

bool DirectX12::isAvailable()
{
    HINSTANCE dxgiDLL = getDLLRegister()->ladeDLL("dxgi.dll", "dxgi.dll");
    if (!dxgiDLL) return 0;
    HINSTANCE d3d12DLL = getDLLRegister()->ladeDLL("d3d12.dll", "d3d12.dll");
    if (!d3d12DLL)
    {
        getDLLRegister()->releaseDLL("dxgi.dll");
        return 0;
    }
    CreateDXGIFactory2Function createFactory
        = (CreateDXGIFactory2Function)GetProcAddress(
            dxgiDLL, "CreateDXGIFactory2");
    if (!createFactory)
    {
        getDLLRegister()->releaseDLL("dxgi.dll");
        getDLLRegister()->releaseDLL("d3d12.dll");
        return 0;
    }
    D3D12CreateDeviceFunction createDevice
        = (D3D12CreateDeviceFunction)GetProcAddress(
            d3d12DLL, "D3D12CreateDevice");
    if (!createDevice)
    {
        getDLLRegister()->releaseDLL("dxgi.dll");
        getDLLRegister()->releaseDLL("d3d12.dll");
        return 0;
    }
#ifdef _DEBUG
    D3D12GetDebugInterfaceFunction getDebugInterface
        = (D3D12GetDebugInterfaceFunction)GetProcAddress(
            d3d12DLL, "D3D12GetDebugInterface");
    ID3D12Debug* debug = 0;
    getDebugInterface(__uuidof(ID3D12Debug), (void**)&debug);
    debug->EnableDebugLayer();
#endif
    IDXGIFactory4* factory;
    UINT createFactoryFlags = 0;
#ifdef _DEBUG
    createFactoryFlags = DXGI_CREATE_FACTORY_DEBUG;
#endif
    HRESULT res = createFactory(
        createFactoryFlags, __uuidof(IDXGIFactory4), (void**)&factory);
    if (FAILED(res))
    {
        getDLLRegister()->releaseDLL("dxgi.dll");
        getDLLRegister()->releaseDLL("d3d12.dll");
        return 0;
    }
    int index = 0;
    do
    {
        IDXGIAdapter1* current;
        res = factory->EnumAdapters1(index++, &current);
        if (res == S_OK)
        {
            DXGI_ADAPTER_DESC1 dxgiAdapterDesc1;
            current->GetDesc1(&dxgiAdapterDesc1);
            ID3D12Device5* device = 0;
            if ((dxgiAdapterDesc1.Flags & DXGI_ADAPTER_FLAG_SOFTWARE) == 0
                && SUCCEEDED(createDevice(current,
                    D3D_FEATURE_LEVEL_12_1,
                    __uuidof(ID3D12Device5),
                    (void**)&device)))
            {
                device->Release();
                current->Release();
                factory->Release();
#ifdef _DEBUG
                debug->Release();
#endif
                getDLLRegister()->releaseDLL("dxgi.dll");
                getDLLRegister()->releaseDLL("d3d12.dll");
                return 1;
            }
            current->Release();
        }
    } while (res != DXGI_ERROR_NOT_FOUND);
    factory->Release();
    getDLLRegister()->releaseDLL("dxgi.dll");
    getDLLRegister()->releaseDLL("d3d12.dll");
    return 0;
}

DXBuffer* DirectX12::createIndexBuffer()
{
    return new DX12IndexBuffer(
        sizeof(int), device, copyCommandQueue, directCommandQueue);
}

DXBuffer* DirectX12::createVertexBuffer()
{
    return new DX12VertexBuffer(
        sizeof(Vertex3D), device, copyCommandQueue, directCommandQueue);
}

DXBuffer* DirectX12::createStructuredBuffer(int eSize)
{
    throw "Sorry, support for structured buffers will come eventualy"; // TODO: support structured buffers
}