fenetres DirectX en multithread

L'auteur de ce sujet a trouvé une solution à son problème.
Auteur du sujet

Bonjour a tous.

Alors voila, je me lance actuellement a la decouverte de DirectX11 et apres avoir lu un peu sur le sujet et etudie les tutos fournis avec le SDK, j'en suis arrive a faire un petit programme avec un triangle faisant une rotation autour de l'axe vertical et donc les 2 cotes sont affiches (donc en gros 2 triangles colles, l'un pour la face avant et le second pour la face arriere).
Maintenant ma prochaine etape serait d'etendre ce programme pour que 2 fenetres DirectX soient affichees, chacune ayant sont propre thread, et donc lorsque l'on ferme l'une des 2 fenetres, la seconde ne se ferme pas automatiquement et le programme ne se termine pas du meme coup.

Pour le moment je creee ma fenetre DirectX avec la fonction wWinMain mais du coup je ne sais pas si je peux l'appeler 2 fois pour creer 2 fenetres independantes …
voici mon code pour le moment :

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//--------------------------------------------------------------------------------------
// File: Tutorial04.cpp
//
// This application displays a 3D cube using Direct3D 11
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//--------------------------------------------------------------------------------------
#include <windows.h>
#include <d3d11.h>
#include <d3dx11.h>
#include <d3dcompiler.h>
#include <xnamath.h>
#include "resource.h"


//--------------------------------------------------------------------------------------
// Structures
//--------------------------------------------------------------------------------------
struct SimpleVertex
{
    XMFLOAT3 Pos;
    XMFLOAT4 Color;
};


struct ConstantBuffer
{
  XMMATRIX mWorld;
  XMMATRIX mView;
  XMMATRIX mProjection;
};


//--------------------------------------------------------------------------------------
// Global Variables
//--------------------------------------------------------------------------------------
HINSTANCE               g_hInst = NULL;
HWND                    g_hWnd = NULL;
D3D_DRIVER_TYPE         g_driverType = D3D_DRIVER_TYPE_NULL;
D3D_FEATURE_LEVEL       g_featureLevel = D3D_FEATURE_LEVEL_11_0;
ID3D11Device*           g_pd3dDevice = NULL;
ID3D11DeviceContext*    g_pImmediateContext = NULL;
IDXGISwapChain*         g_pSwapChain = NULL;
ID3D11RenderTargetView* g_pRenderTargetView = NULL;
ID3D11VertexShader*     g_pVertexShader = NULL;
ID3D11PixelShader*      g_pPixelShader = NULL;
ID3D11InputLayout*      g_pVertexLayout = NULL;
ID3D11Buffer*           g_pVertexBuffer = NULL;
ID3D11Buffer*           g_pIndexBuffer = NULL;
ID3D11Buffer*           g_pConstantBuffer = NULL;
XMMATRIX                g_World;
XMMATRIX                g_View;
XMMATRIX                g_Projection;


//--------------------------------------------------------------------------------------
// Forward declarations
//--------------------------------------------------------------------------------------
HRESULT InitWindow( HINSTANCE hInstance, int nCmdShow );
HRESULT InitDevice();
void CleanupDevice();
LRESULT CALLBACK    WndProc( HWND, UINT, WPARAM, LPARAM );
void Render();


//--------------------------------------------------------------------------------------
// Entry point to the program. Initializes everything and goes into a message processing 
// loop. Idle time is used to render the scene.
//--------------------------------------------------------------------------------------
int WINAPI wWinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance, LPWSTR lpCmdLine, int nCmdShow )
{
    UNREFERENCED_PARAMETER( hPrevInstance );
    UNREFERENCED_PARAMETER( lpCmdLine );

    if( FAILED( InitWindow( hInstance, nCmdShow ) ) )
        return 0;

    if( FAILED( InitDevice() ) )
    {
        CleanupDevice();
        return 0;
    }

    // Main message loop
    MSG msg = {0};
    while( WM_QUIT != msg.message )
    {
        if( PeekMessage( &msg, NULL, 0, 0, PM_REMOVE ) )
        {
            TranslateMessage( &msg );
            DispatchMessage( &msg );
        }
        else
        {
            Render();
        }
    }

    CleanupDevice();

    return ( int )msg.wParam;
}


//--------------------------------------------------------------------------------------
// Register class and create window
//--------------------------------------------------------------------------------------
HRESULT InitWindow( HINSTANCE hInstance, int nCmdShow )
{
    // Register class
    WNDCLASSEX wcex;
    wcex.cbSize = sizeof( WNDCLASSEX );
    wcex.style = CS_HREDRAW | CS_VREDRAW;
    wcex.lpfnWndProc = WndProc;
    wcex.cbClsExtra = 0;
    wcex.cbWndExtra = 0;
    wcex.hInstance = hInstance;
    wcex.hIcon = LoadIcon( hInstance, ( LPCTSTR )IDI_TUTORIAL1 );
    wcex.hCursor = LoadCursor( NULL, IDC_ARROW );
    wcex.hbrBackground = ( HBRUSH )( COLOR_WINDOW + 1 );
    wcex.lpszMenuName = NULL;
    wcex.lpszClassName = L"TutorialWindowClass";
    wcex.hIconSm = LoadIcon( wcex.hInstance, ( LPCTSTR )IDI_TUTORIAL1 );
    if( !RegisterClassEx( &wcex ) )
        return E_FAIL;

    // Create window
    g_hInst = hInstance;
    RECT rc = { 0, 0, 640, 480 };
    AdjustWindowRect( &rc, WS_OVERLAPPEDWINDOW, FALSE );
    g_hWnd = CreateWindow( L"TutorialWindowClass", L"Direct3D 11 Tutorial 4: 3D Spaces", WS_OVERLAPPEDWINDOW,
                           CW_USEDEFAULT, CW_USEDEFAULT, rc.right - rc.left, rc.bottom - rc.top, NULL, NULL, hInstance,
                           NULL );
    if( !g_hWnd )
        return E_FAIL;

    ShowWindow( g_hWnd, nCmdShow );

    return S_OK;
}


//--------------------------------------------------------------------------------------
// Helper for compiling shaders with D3DX11
//--------------------------------------------------------------------------------------
HRESULT CompileShaderFromFile( WCHAR* szFileName, LPCSTR szEntryPoint, LPCSTR szShaderModel, ID3DBlob** ppBlobOut )
{
    HRESULT hr = S_OK;

    DWORD dwShaderFlags = D3DCOMPILE_ENABLE_STRICTNESS;
#if defined( DEBUG ) || defined( _DEBUG )
    // Set the D3DCOMPILE_DEBUG flag to embed debug information in the shaders.
    // Setting this flag improves the shader debugging experience, but still allows 
    // the shaders to be optimized and to run exactly the way they will run in 
    // the release configuration of this program.
    dwShaderFlags |= D3DCOMPILE_DEBUG;
#endif

    ID3DBlob* pErrorBlob;
    hr = D3DX11CompileFromFile( szFileName, NULL, NULL, szEntryPoint, szShaderModel, 
        dwShaderFlags, 0, NULL, ppBlobOut, &pErrorBlob, NULL );
    if( FAILED(hr) )
    {
        if( pErrorBlob != NULL )
            OutputDebugStringA( (char*)pErrorBlob->GetBufferPointer() );
        if( pErrorBlob ) pErrorBlob->Release();
        return hr;
    }
    if( pErrorBlob ) pErrorBlob->Release();

    return S_OK;
}


//--------------------------------------------------------------------------------------
// 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_0,
        D3D_FEATURE_LEVEL_10_1,
        D3D_FEATURE_LEVEL_10_0,
    };
  UINT numFeatureLevels = ARRAYSIZE( featureLevels );

    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;

    for( UINT driverTypeIndex = 0; driverTypeIndex < numDriverTypes; driverTypeIndex++ )
    {
        g_driverType = driverTypes[driverTypeIndex];
        hr = D3D11CreateDeviceAndSwapChain( NULL, g_driverType, NULL, createDeviceFlags, featureLevels, numFeatureLevels,
                                            D3D11_SDK_VERSION, &sd, &g_pSwapChain, &g_pd3dDevice, &g_featureLevel, &g_pImmediateContext );
        if( SUCCEEDED( hr ) )
            break;
    }
    if( FAILED( hr ) )
        return hr;

    // Create a render target view
    ID3D11Texture2D* pBackBuffer = NULL;
    hr = g_pSwapChain->GetBuffer( 0, __uuidof( ID3D11Texture2D ), ( LPVOID* )&pBackBuffer );
    if( FAILED( hr ) )
        return hr;

    hr = g_pd3dDevice->CreateRenderTargetView( pBackBuffer, NULL, &g_pRenderTargetView );
    pBackBuffer->Release();
    if( FAILED( hr ) )
        return hr;

    g_pImmediateContext->OMSetRenderTargets( 1, &g_pRenderTargetView, NULL );

    // 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 = NULL;
    hr = CompileShaderFromFile( L"Tutorial04.fx", "VS", "vs_4_0", &pVSBlob );
    if( FAILED( hr ) )
    {
        MessageBox( NULL,
                    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(), NULL, &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 },
        { "COLOR", 0, DXGI_FORMAT_R32G32B32A32_FLOAT, 0, 12, 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 = NULL;
    hr = CompileShaderFromFile( L"Tutorial04.fx", "PS", "ps_4_0", &pPSBlob );
    if( FAILED( hr ) )
    {
        MessageBox( NULL,
                    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(), NULL, &g_pPixelShader );
  pPSBlob->Release();
    if( FAILED( hr ) )
        return hr;

    //// Create vertex buffer
    //SimpleVertex vertices[] =
    //{
    //    { XMFLOAT3( -1.0f, 1.0f, -1.0f ), XMFLOAT4( 0.0f, 0.0f, 1.0f, 1.0f ) },
    //    { XMFLOAT3( 1.0f, 1.0f, -1.0f ), XMFLOAT4( 0.0f, 1.0f, 0.0f, 1.0f ) },
    //    { XMFLOAT3( 1.0f, 1.0f, 1.0f ), XMFLOAT4( 0.0f, 1.0f, 1.0f, 1.0f ) },
    //    { XMFLOAT3( -1.0f, 1.0f, 1.0f ), XMFLOAT4( 1.0f, 0.0f, 0.0f, 1.0f ) },
    //    { XMFLOAT3( -1.0f, -1.0f, -1.0f ), XMFLOAT4( 1.0f, 0.0f, 1.0f, 1.0f ) },
    //    { XMFLOAT3( 1.0f, -1.0f, -1.0f ), XMFLOAT4( 1.0f, 1.0f, 0.0f, 1.0f ) },
    //    { XMFLOAT3( 1.0f, -1.0f, 1.0f ), XMFLOAT4( 1.0f, 1.0f, 1.0f, 1.0f ) },
    //    { XMFLOAT3( -1.0f, -1.0f, 1.0f ), XMFLOAT4( 0.0f, 0.0f, 0.0f, 1.0f ) },
    //};

  // Create vertex buffer
  SimpleVertex vertices[] =
  {
      { XMFLOAT3(0.0f, 2.0f, 0.0f), XMFLOAT4(0.0f, 0.0f, 1.0f, 1.0f) },
      { XMFLOAT3(1.0f, 0.0f, 0.0f), XMFLOAT4(0.0f, 1.0f, 0.0f, 1.0f) },
      { XMFLOAT3(-1.0f, 0.0f, 0.0f), XMFLOAT4(1.0f, 0.0f, 0.0f, 1.0f) },
  };

    D3D11_BUFFER_DESC bd;
  ZeroMemory( &bd, sizeof(bd) );
    bd.Usage = D3D11_USAGE_DEFAULT;
    bd.ByteWidth = sizeof( SimpleVertex ) * 3;
    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 );

    //// Create index buffer
    //WORD indices[] =
    //{
    //    3,1,0,
    //    2,1,3,

    //    0,5,4,
    //    1,5,0,

    //    3,4,7,
    //    0,4,3,

    //    1,6,5,
    //    2,6,1,

    //    2,7,6,
    //    3,7,2,

    //    6,4,5,
    //    7,4,6,
    //};

  // Create index buffer
  WORD indices[] =
  {
      0, 1, 2,
      0, 2, 1,
  };

    bd.Usage = D3D11_USAGE_DEFAULT;
    bd.ByteWidth = sizeof( WORD ) * 6;        // 36 vertices needed for 12 triangles in a triangle list
    bd.BindFlags = D3D11_BIND_INDEX_BUFFER;
  bd.CPUAccessFlags = 0;
    InitData.pSysMem = indices;
    hr = g_pd3dDevice->CreateBuffer( &bd, &InitData, &g_pIndexBuffer );
    if( FAILED( hr ) )
        return hr;

    // Set index buffer
    g_pImmediateContext->IASetIndexBuffer( g_pIndexBuffer, DXGI_FORMAT_R16_UINT, 0 );

    // Set primitive topology
    g_pImmediateContext->IASetPrimitiveTopology( D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST );

  // Create the constant buffer
  bd.Usage = D3D11_USAGE_DEFAULT;
  bd.ByteWidth = sizeof(ConstantBuffer);
  bd.BindFlags = D3D11_BIND_CONSTANT_BUFFER;
  bd.CPUAccessFlags = 0;
    hr = g_pd3dDevice->CreateBuffer( &bd, NULL, &g_pConstantBuffer );
    if( FAILED( hr ) )
        return hr;

    // Initialize the world matrix
  g_World = XMMatrixIdentity();

    // Initialize the view matrix
  XMVECTOR Eye = XMVectorSet( 0.0f, 1.0f, -5.0f, 0.0f );
  XMVECTOR At = XMVectorSet( 0.0f, 1.0f, 0.0f, 0.0f );
  XMVECTOR Up = XMVectorSet( 0.0f, 1.0f, 0.0f, 0.0f );
  g_View = XMMatrixLookAtLH( Eye, At, Up );

    // Initialize the projection matrix
  g_Projection = XMMatrixPerspectiveFovLH( XM_PIDIV2, width / (FLOAT)height, 0.01f, 100.0f );

    return S_OK;
}


//--------------------------------------------------------------------------------------
// Clean up the objects we've created
//--------------------------------------------------------------------------------------
void CleanupDevice()
{
    if( g_pImmediateContext ) g_pImmediateContext->ClearState();

    if( g_pConstantBuffer ) g_pConstantBuffer->Release();
    if( g_pVertexBuffer ) g_pVertexBuffer->Release();
    if( g_pIndexBuffer ) g_pIndexBuffer->Release();
    if( g_pVertexLayout ) g_pVertexLayout->Release();
    if( g_pVertexShader ) g_pVertexShader->Release();
    if( g_pPixelShader ) g_pPixelShader->Release();
    if( g_pRenderTargetView ) g_pRenderTargetView->Release();
    if( g_pSwapChain ) g_pSwapChain->Release();
    if( g_pImmediateContext ) g_pImmediateContext->Release();
    if( g_pd3dDevice ) g_pd3dDevice->Release();
}


//--------------------------------------------------------------------------------------
// Called every time the application receives a message
//--------------------------------------------------------------------------------------
LRESULT CALLBACK WndProc( HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam )
{
    PAINTSTRUCT ps;
    HDC hdc;

    switch( message )
    {
        case WM_PAINT:
            hdc = BeginPaint( hWnd, &ps );
            EndPaint( hWnd, &ps );
            break;

        case WM_DESTROY:
            PostQuitMessage( 0 );
            break;

        default:
            return DefWindowProc( hWnd, message, wParam, lParam );
    }

    return 0;
}


//--------------------------------------------------------------------------------------
// Render a frame
//--------------------------------------------------------------------------------------
void Render()
{
    // Update our time
    static float t = 0.0f;
    if( g_driverType == D3D_DRIVER_TYPE_REFERENCE )
    {
        t += ( float )XM_PI * 0.0125f;
    }
    else
    {
        static DWORD dwTimeStart = 0;
        DWORD dwTimeCur = GetTickCount();
        if( dwTimeStart == 0 )
            dwTimeStart = dwTimeCur;
        t = ( dwTimeCur - dwTimeStart ) / 1000.0f;
    }

    //
    // Animate the cube
    //
  g_World = XMMatrixRotationY( t*5 );

    //
    // Clear the back buffer
    //
    float ClearColor[4] = { 0.0f, 0.125f, 0.3f, 1.0f }; // red,green,blue,alpha
    g_pImmediateContext->ClearRenderTargetView( g_pRenderTargetView, ClearColor );

    //
    // Update variables
    //
    ConstantBuffer cb;
  cb.mWorld = XMMatrixTranspose( g_World );
  cb.mView = XMMatrixTranspose( g_View );
  cb.mProjection = XMMatrixTranspose( g_Projection );
  g_pImmediateContext->UpdateSubresource( g_pConstantBuffer, 0, NULL, &cb, 0, 0 );

    //
    // Renders a triangle
    //
  g_pImmediateContext->VSSetShader( g_pVertexShader, NULL, 0 );
  g_pImmediateContext->VSSetConstantBuffers( 0, 1, &g_pConstantBuffer );
  g_pImmediateContext->PSSetShader( g_pPixelShader, NULL, 0 );
  //g_pImmediateContext->Draw(3, 0);
  g_pImmediateContext->DrawIndexed(6, 0, 0 );        // 6 vertices needed for 2 triangles in a triangle list

    //
    // Present our back buffer to our front buffer
    //
    g_pSwapChain->Present( 0, 0 );
}

Voila ce n'est pas de tres haut niveau pour le moment mais c'est pour decouvrir du coup si une personne s'y connaissant un peu plus que moi sur le sujet pouvait me donner quelques conseils ou pistes, je les accepterai avec grand plaisir :)
Merci d'avance

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