Method DX11TextureRT

GTE/Graphics/DX11/DX11TextureRT.cpp:17–90

}

DX11TextureRT::DX11TextureRT(ID3D11Device* device, TextureRT const* texture)
    :
    DX11Texture2(texture),
    mRTView(nullptr)
{
    // Specify the texture description.
    D3D11_TEXTURE2D_DESC desc;
    desc.Width = texture->GetWidth();
    desc.Height = texture->GetHeight();
    desc.MipLevels = texture->GetNumLevels();
    desc.ArraySize = 1;
    desc.Format = static_cast<DXGI_FORMAT>(texture->GetFormat());
    desc.SampleDesc.Count = 1;
    desc.SampleDesc.Quality = 0;
    desc.Usage = D3D11_USAGE_DEFAULT;
    desc.BindFlags = D3D11_BIND_SHADER_RESOURCE | D3D11_BIND_RENDER_TARGET;
    desc.CPUAccessFlags = D3D11_CPU_ACCESS_NONE;
    desc.MiscFlags = (texture->IsShared() ?
        D3D11_RESOURCE_MISC_SHARED : D3D11_RESOURCE_MISC_NONE);

    if (texture->GetUsage() == Resource::Usage::SHADER_OUTPUT)
    {
        desc.BindFlags |= D3D11_BIND_UNORDERED_ACCESS;
    }

    if (texture->WantAutogenerateMipmaps() && !texture->IsShared())
    {
        desc.MiscFlags |= D3D11_RESOURCE_MISC_GENERATE_MIPS;
    }

    // Create the texture.
    ID3D11Texture2D* dxTexture = nullptr;
    if (texture->GetData())
    {
        uint32_t const numSubresources = texture->GetNumSubresources();
        std::vector<D3D11_SUBRESOURCE_DATA> data(numSubresources);
        for (uint32_t index = 0; index < numSubresources; ++index)
        {
            auto sr = texture->GetSubresource(index);
            data[index].pSysMem = sr.data;
            data[index].SysMemPitch = sr.rowPitch;
            data[index].SysMemSlicePitch = 0;
        }
        DX11Log(device->CreateTexture2D(&desc, &data[0], &dxTexture));
    }
    else
    {
        DX11Log(device->CreateTexture2D(&desc, nullptr, &dxTexture));
    }
    mDXObject = dxTexture;

    // Create views of the texture.
    CreateSRView(device, desc);
    CreateRTView(device, desc);
    if (texture->GetUsage() == Resource::Usage::SHADER_OUTPUT)
    {
        CreateUAView(device, desc);
    }