Question

我正在尝试创建另一个rendertargetview并对其进行渲染

之前，我只是从swapchain取回缓冲区，然后从中创建rtv，这很好。但是只有从自定义资源创建rtv时，我才遇到问题。

    D3D11_TEXTURE2D_DESC bb_desc;
    bb_desc.Width = width;
    bb_desc.Height = height;
    bb_desc.MipLevels = 1;
    bb_desc.ArraySize = 1;
    bb_desc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
    bb_desc.Usage = D3D11_USAGE_DEFAULT;
    bb_desc.BindFlags = D3D11_BIND_RENDER_TARGET | D3D11_BIND_SHADER_RESOURCE;
    bb_desc.CPUAccessFlags = 0;
    bb_desc.MiscFlags = 0;
    bb_desc.SampleDesc.Count = msCount;
    bb_desc.SampleDesc.Quality = msQuality;

    R_CHECK(device->CreateTexture2D(
        &bb_desc,
        nullptr,
        backBuffer.GetAddressOf()));

    D3D11_RENDER_TARGET_VIEW_DESC rtv_desc;
    rtv_desc.Format = bb_desc.Format;
    rtv_desc.ViewDimension = D3D11_RTV_DIMENSION_TEXTURE2D;
    rtv_desc.Texture2D.MipSlice = 0;
    R_CHECK(device->CreateRenderTargetView(
        backBuffer.Get(),
        &rtv_desc,
        bbRTV.GetAddressOf()));

    D3D11_SHADER_RESOURCE_VIEW_DESC srv_desc;
    srv_desc.Format = bb_desc.Format;
    srv_desc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D;
    srv_desc.Texture2D.MostDetailedMip = 0;
    srv_desc.Texture2D.MipLevels = 1;
    R_CHECK(device->CreateShaderResourceView(
        backBuffer.Get(),
        &srv_desc,
        bbSRV.GetAddressOf()));

    dContext->OMSetRenderTargets(1, bbRTV.GetAddressOf(), nullptr);

我渲染它

    float bgColor[3] = { 1,0,0 };
    dContext->ClearRenderTargetView(bbRTV.Get(), bgColor);

    swapchain->Present(1, NULL);

期望红色屏幕，但仅显示黑色。而且也没有错误日志。任何建议将不胜感激〜

Answer 1

ClearRenderTargetView的第二个参数无效。它必须是指向4个float值数组的第一个元素的指针。由于您将指针传递给3个float值数组的第一个元素，因此会发生缓冲区溢出，从而导致未定义行为。

但是最重要的是，当您渲染到纹理时，调用Present时它不会显示在屏幕上，因为它不是交换链返回缓冲区。您可以使用DirectX调试器检查纹理内容。

我的简单渲染目标视图不起作用

1 个答案: