Direct3D9不画画吗？

Question

我需要画一些简单的形状，我决定使用D3D9。在阅读了一些关于directxtutorial.com的教程之后，我终于拥有了使我的第一个形状出现在屏幕上所需的所有代码和知识。但问题是，没有出现任何图像。我查看了很多次代码，并将其与网站上的代码进行了比较，并进行了验证。为什么屏幕上没有渲染？

    #define CUSTOMFVF (D3DFVF_XYZRHW | D3DFVF_DIFFUSE)

    LPDIRECT3D9 d3d;
    LPDIRECT3DDEVICE9 d3ddev;

    LPDIRECT3DVERTEXBUFFER9 vbuffer;

    struct CUSTOMVERTEX
    {
        float x, y, z, rhw;
        DWORD color;
    };

    void InitD3D(HWND hWnd)
    {
        d3d = Direct3DCreate9(D3D_SDK_VERSION);

        D3DPRESENT_PARAMETERS d3dpp;
        ZeroMemory(&d3dpp, sizeof(d3dpp));

        d3dpp.Windowed = true;
        d3dpp.hDeviceWindow = hWnd;
        d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;

        d3d->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hWnd, D3DCREATE_SOFTWARE_VERTEXPROCESSING, &d3dpp, &d3ddev);
    }

void InitGraphics()
{
    CUSTOMVERTEX verticies[]
    {
        {50, 70, 1.0f, 1.0f, D3DCOLOR_XRGB(250, 0, 0),},
        {70, 50, 1.0f, 1.0f, D3DCOLOR_XRGB(0, 250, 0),},
        {40, 80, 1.0f, 1.0f, D3DCOLOR_XRGB(0, 0, 250),},
    };

    d3ddev->CreateVertexBuffer(3 * sizeof(CUSTOMVERTEX), NULL, CUSTOMFVF, D3DPOOL_MANAGED, &vbuffer, NULL);

    void* vp;

    vbuffer->Lock(0, 0, (void**)&vp, NULL);

    memcpy(vp, verticies, sizeof(verticies));

    vbuffer->Unlock();
}

void Draw()
{
    d3ddev->Clear(NULL, NULL, D3DCLEAR_TARGET, NULL, 1.0f, NULL);

    d3ddev->BeginScene();

    d3ddev->SetFVF(CUSTOMFVF);
    d3ddev->SetStreamSource(0, vbuffer, 0, sizeof(CUSTOMVERTEX));
    d3ddev->DrawPrimitive(D3DPT_TRIANGLELIST, 0, 1);

    d3ddev->EndScene();
    d3ddev->Present(NULL, NULL, NULL, NULL);
}

void ReleaseD3D()
{
    d3d->Release();
    d3ddev->Release();
    vbuffer->Release();
}

Answer 1

原来我的顶点位置不足以构成三角形。谢谢你的帮助，但它提醒我要设置错误检查。