Question

我目前只能将内容从QML迁移到Unity。我的想法是使用Spout视频帧共享系统。 Unity部件可以正常工作，但是仅接收无效的纹理。

对于Qt / QML部分，我必须使用MinGW编译器，因此我只能使用本机C Spout .dll（应该可以正常工作，因为Unity会检测到Spout发送者）

对于QML部分：

Item {
    id:root
    width: 500
    height: 500

    TextureCapturing{ //This is my own element, which provides the Spout sender
        id: capturing
    }

    ShaderEffectSource { //This is used as the source item 
        id: textureSource
        sourceItem: test
        hideSource: false
        width: sourceItem ? sourceItem.width : 0
        height: sourceItem ? sourceItem.height : 0
    }

    Timer{ //This prevents code executing until the window is fully build up
        interval: 500
        running: true
        repeat: false
        onTriggered: capturing.source = textureSource;
    }

    Rectangle{ //Some test content 
        id:test
        property bool isClicked: false
        anchors.fill: parent
        color: isClicked ? "red" : "blue"
        MouseArea{
            anchors.fill: parent
            onClicked: parent.isClicked ^= true
        }
    }

TextureCapturing组件是我添加的一个自定义类。以下代码可以正常工作，不会产生任何错误，但遗憾的是也不会产生任何结果：

TextureCapturing::TextureCapturing() : QObject()
{
    spoutptr = GetSpout(); // Create an instance of the Spout library
    spoutptr->SetDX9(false);
}

TextureCapturing::~TextureCapturing()
{
    if(spoutptr) {
        qDebug()<< "Releasing Spout";
        spoutptr->ReleaseSender(); // Release the sender
        spoutptr->Release(); // Release the Spout library instance
    }
}

void TextureCapturing::setSource(QQuickItem *source)
{

    if(source != m_source){
        m_source = source;
        newWindow = m_source ? m_source->window() : nullptr;
        connect(newWindow, &QQuickWindow::afterRendering,
                this, &TextureCapturing::update, Qt::DirectConnection);
    }
}

QQuickItem *TextureCapturing::source() const
{
    return m_source;
}

void TextureCapturing::update()
{
    if(!senderExists){
        senderExists = spoutptr->CreateSender("QMLSender", 500, 500);
        QOpenGLFramebufferObjectFormat format;
        format.setAttachment(QOpenGLFramebufferObject::CombinedDepthStencil);
        format.setMipmap(false);
        format.setSamples(0);
        format.setTextureTarget(GL_TEXTURE_2D);
        format.setInternalTextureFormat(GL_RGBA8);
        fbo = new QOpenGLFramebufferObject(500,500,format);
        newWindow->setRenderTarget(fbo);
    }

    qDebug()<< "TextureId: " << fbo->texture();
    glBindTexture(GL_TEXTURE_2D, fbo->texture());
    spoutptr->SendTexture(fbo->texture(), GL_TEXTURE_2D, 500, 500);
    glBindTexture(GL_TEXTURE_2D, 0);
    qDebug()<< "Send";
}

我很确定在绑定fbo和发送纹理时出现了错误。问题是，我从未使用过OpenGL，并且仅在结果没有任何变化的情况下尝试了其他方法...

提前谢谢！

使用Spout2 SDK的QML窗口到Unity Texture

0 个答案: