Отрисовать динамический массив примитивов

//--------------------------------------------------------------------------------------
// Create Direct3D device and swap chain
//--------------------------------------------------------------------------------------
HRESULT InitDevice()
{
    HRESULT hr = S_OK;
 
    RECT rc;
    GetClientRect( g_hWnd, &rc );
    UINT width = rc.right - rc.left;
    UINT height = rc.bottom - rc.top;
 
    UINT createDeviceFlags = 0;
#ifdef _DEBUG
    createDeviceFlags |= D3D11_CREATE_DEVICE_DEBUG;
#endif
 
    D3D_DRIVER_TYPE driverTypes[] =
    {
        D3D_DRIVER_TYPE_HARDWARE,
        D3D_DRIVER_TYPE_WARP,
        D3D_DRIVER_TYPE_REFERENCE,
    };
    UINT numDriverTypes = ARRAYSIZE( driverTypes );
 
    D3D_FEATURE_LEVEL featureLevels[] =
    {
        D3D_FEATURE_LEVEL_11_1,
        D3D_FEATURE_LEVEL_11_0,
        D3D_FEATURE_LEVEL_10_1,
        D3D_FEATURE_LEVEL_10_0,
    };
    UINT numFeatureLevels = ARRAYSIZE( featureLevels );
 
    for( UINT driverTypeIndex = 0; driverTypeIndex < numDriverTypes; driverTypeIndex++ )
    {
        g_driverType = driverTypes[driverTypeIndex];
        hr = D3D11CreateDevice( nullptr, g_driverType, nullptr, createDeviceFlags, featureLevels, numFeatureLevels,
                                D3D11_SDK_VERSION, &g_pd3dDevice, &g_featureLevel, &g_pImmediateContext );
 
        if ( hr == E_INVALIDARG )
        {
            // DirectX 11.0 platforms will not recognize D3D_FEATURE_LEVEL_11_1 so we need to retry without it
            hr = D3D11CreateDevice( nullptr, g_driverType, nullptr, createDeviceFlags, &featureLevels[1], numFeatureLevels - 1,
                                    D3D11_SDK_VERSION, &g_pd3dDevice, &g_featureLevel, &g_pImmediateContext );
        }
 
        if( SUCCEEDED( hr ) )
            break;
    }
    if( FAILED( hr ) )
        return hr;
 
    // Obtain DXGI factory from device (since we used nullptr for pAdapter above)
    IDXGIFactory1* dxgiFactory = nullptr;
    {
        IDXGIDevice* dxgiDevice = nullptr;
        hr = g_pd3dDevice->QueryInterface( __uuidof(IDXGIDevice), reinterpret_cast<void**>(&dxgiDevice) );
        if (SUCCEEDED(hr))
        {
            IDXGIAdapter* adapter = nullptr;
            hr = dxgiDevice->GetAdapter(&adapter);
            if (SUCCEEDED(hr))
            {
                hr = adapter->GetParent( __uuidof(IDXGIFactory1), reinterpret_cast<void**>(&dxgiFactory) );
                adapter->Release();
            }
            dxgiDevice->Release();
        }
    }
    if (FAILED(hr))
        return hr;
 
    // Create swap chain
    IDXGIFactory2* dxgiFactory2 = nullptr;
    hr = dxgiFactory->QueryInterface( __uuidof(IDXGIFactory2), reinterpret_cast<void**>(&dxgiFactory2) );
    if ( dxgiFactory2 )
    {
        // DirectX 11.1 or later
        hr = g_pd3dDevice->QueryInterface( __uuidof(ID3D11Device1), reinterpret_cast<void**>(&g_pd3dDevice1) );
        if (SUCCEEDED(hr))
        {
            (void) g_pImmediateContext->QueryInterface( __uuidof(ID3D11DeviceContext1), reinterpret_cast<void**>(&g_pImmediateContext1) );
        }
 
        DXGI_SWAP_CHAIN_DESC1 sd;
        ZeroMemory(&sd, sizeof(sd));
        sd.Width = width;
        sd.Height = height;
        sd.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
        sd.SampleDesc.Count = 1;
        sd.SampleDesc.Quality = 0;
        sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
        sd.BufferCount = 1;
 
        hr = dxgiFactory2->CreateSwapChainForHwnd( g_pd3dDevice, g_hWnd, &sd, nullptr, nullptr, &g_pSwapChain1 );
        if (SUCCEEDED(hr))
        {
            hr = g_pSwapChain1->QueryInterface( __uuidof(IDXGISwapChain), reinterpret_cast<void**>(&g_pSwapChain) );
        }
 
        dxgiFactory2->Release();
    }
    else
    {
        // DirectX 11.0 systems
        DXGI_SWAP_CHAIN_DESC sd;
        ZeroMemory(&sd, sizeof(sd));
        sd.BufferCount = 1;
        sd.BufferDesc.Width = width;
        sd.BufferDesc.Height = height;
        sd.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
        sd.BufferDesc.RefreshRate.Numerator = 60;
        sd.BufferDesc.RefreshRate.Denominator = 1;
        sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
        sd.OutputWindow = g_hWnd;
        sd.SampleDesc.Count = 1;
        sd.SampleDesc.Quality = 0;
        sd.Windowed = true;//false; //true
 
        hr = dxgiFactory->CreateSwapChain( g_pd3dDevice, &sd, &g_pSwapChain );
    }
 
    // Note this tutorial doesn't handle full-screen swapchains so we block the ALT+ENTER shortcut
    dxgiFactory->MakeWindowAssociation( g_hWnd, DXGI_MWA_NO_ALT_ENTER );
 
    dxgiFactory->Release();
 
    if (FAILED(hr))
        return hr;
 
    // Create a render target view
    ID3D11Texture2D* pBackBuffer = nullptr;
    hr = g_pSwapChain->GetBuffer( 0, __uuidof( ID3D11Texture2D ), reinterpret_cast<void**>( &pBackBuffer ) );
    if( FAILED( hr ) )
        return hr;
 
    hr = g_pd3dDevice->CreateRenderTargetView( pBackBuffer, nullptr, &g_pRenderTargetView );
    pBackBuffer->Release();
    if( FAILED( hr ) )
        return hr;
 
    g_pImmediateContext->OMSetRenderTargets( 1, &g_pRenderTargetView, nullptr );
 
    // Setup the viewport
    D3D11_VIEWPORT vp;
    vp.Width = (FLOAT)width;
    vp.Height = (FLOAT)height;
    vp.MinDepth = 0.0f;
    vp.MaxDepth = 1.0f;
    vp.TopLeftX = 0;
    vp.TopLeftY = 0;
    g_pImmediateContext->RSSetViewports( 1, &vp );
 
    // Compile the vertex shader
    ID3DBlob* pVSBlob = nullptr;
    hr = CompileShaderFromFile( L"Life.fx", "VS", "vs_4_0", &pVSBlob );
    if( FAILED( hr ) )
    {
        MessageBox( nullptr,
                    L"The FX file cannot be compiled.  Please run this executable from the directory that contains the FX file.", L"Error", MB_OK );
        return hr;
    }
 
    // Create the vertex shader
    hr = g_pd3dDevice->CreateVertexShader( pVSBlob->GetBufferPointer(), pVSBlob->GetBufferSize(), nullptr, &g_pVertexShader );
    if( FAILED( hr ) )
    {   
        pVSBlob->Release();
        return hr;
    }
 
    // Define the input layout
    D3D11_INPUT_ELEMENT_DESC layout[] =
    {
        { "POSITION", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 0, D3D11_INPUT_PER_VERTEX_DATA, 0 },
    };
    UINT numElements = ARRAYSIZE( layout );
 
    // Create the input layout
    hr = g_pd3dDevice->CreateInputLayout( layout, numElements, pVSBlob->GetBufferPointer(),
                                          pVSBlob->GetBufferSize(), &g_pVertexLayout );
    pVSBlob->Release();
    if( FAILED( hr ) )
        return hr;
 
    // Set the input layout
    g_pImmediateContext->IASetInputLayout( g_pVertexLayout );
 
    // Compile the pixel shader
    ID3DBlob* pPSBlob = nullptr;
    hr = CompileShaderFromFile( L"Life.fx", "PS", "ps_4_0", &pPSBlob );
    if( FAILED( hr ) )
    {
        MessageBox( nullptr,
                    L"The FX file cannot be compiled.  Please run this executable from the directory that contains the FX file.", L"Error", MB_OK );
        return hr;
    }
 
    // Create the pixel shader
    hr = g_pd3dDevice->CreatePixelShader( pPSBlob->GetBufferPointer(), pPSBlob->GetBufferSize(), nullptr, &g_pPixelShader );
    pPSBlob->Release();
    if( FAILED( hr ) ) return hr;
    const long size = 50000;
    SimpleVertex vertices[size];
    long r=0;
    // Create vertex buffer - как отрисовать этот массив еще раз?
    for (long i = 0; i < 50; i++)
    {
        for (long j = 0; j < 1000; j++)
        {
            vertices[r].Pos = XMFLOAT3(-1 + (float)j/ 500 + (float)generation/500, -1+ (float)i/25, 0.0f);//1
            r++;
        }
    };
    generation++;//мой
    if (generation == 2) generation = 0;//мой
    D3D11_BUFFER_DESC bd;
    ZeroMemory( &bd, sizeof(bd) );
    bd.Usage = D3D11_USAGE_DEFAULT;
    bd.ByteWidth = sizeof(SimpleVertex) * ARRAYSIZE(vertices); //* 4;
    bd.BindFlags = D3D11_BIND_VERTEX_BUFFER;
    bd.CPUAccessFlags = 0;
    D3D11_SUBRESOURCE_DATA InitData;
    ZeroMemory( &InitData, sizeof(InitData) );
    InitData.pSysMem = vertices;
    hr = g_pd3dDevice->CreateBuffer( &bd, &InitData, &g_pVertexBuffer );
    if( FAILED( hr ) )
        return hr;
 
    // Set vertex buffer
    UINT stride = sizeof( SimpleVertex );
    UINT offset = 0;
    g_pImmediateContext->IASetVertexBuffers( 0, 1, &g_pVertexBuffer, &stride, &offset );
 
    // Set primitive topology
    g_pImmediateContext->IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_POINTLIST); // POINT
    return S_OK;
}
 
//--------------------------------------------------------------------------------------
// Render a frame
//--------------------------------------------------------------------------------------
void Render()
{
    // Clear the back buffer 
    g_pImmediateContext->ClearRenderTargetView( g_pRenderTargetView, Colors::White );
    // Render a triangle
    g_pImmediateContext->VSSetShader( g_pVertexShader, nullptr, 0 );
    g_pImmediateContext->PSSetShader( g_pPixelShader, nullptr, 0 );
    g_pImmediateContext->Draw(50000, 0 );
    // Present the information rendered to the back buffer to the front buffer (the screen)
    g_pSwapChain->Present( 0, 0 );
}