QT3D中的透明对象

Question

我需要能够在QT3D中更改网格对象的透明度。我使用Scene3D组件作为根，其中包含默认的ForwardRenderer。

components: [
    RenderSettings {
        activeFrameGraph: ForwardRenderer {
            clearColor: Qt.rgba(0, 0, 0, 1)
            camera: camera


        }
    },
    // Event Source will be set by the Qt3DQuickWindow
    InputSettings { }
]

我的3D对象由Mesh，Transform和PhongMaterial组成。

非常感谢任何帮助。

Answer 1

代码没问题。您可以更改模型以查看效果。完整的代码是：

import QtQuick 2.0
import QtQuick.Controls 1.4
import QtQuick.Layouts 1.2
import QtQuick.Dialogs 1.2
import QtQuick.Scene3D 2.0
import Qt3D.Core 2.0
import Qt3D.Render 2.0
import Qt3D.Extras 2.0
import Qt3D.Input 2.0 

Teapot{
    x: 0; y:0; z:0;
    material: PhongAlphaMaterial{
        ambient: Qt.rgba( 1, 0, 0, 1.0 )
        diffuse: Qt.rgba( 1, 0, 0, 1.0 )
        specular: Qt.rgba(1, 0, 0, 1.0 )
        shininess: 1.0
        alpha: 0.5
    }
}

茶壶图片

Answer 2

Just use PhongAlphaMaterial:

PhongAlphaMaterial{
    id: redMaterial
    ambient: Qt.rgba( 1, 0, 0, 1.0 )
    diffuse: Qt.rgba( 1, 0, 0, 1.0 )
    specular: Qt.rgba(1, 0, 0, 1.0 )
    shininess: 1.0
    alpha: 0.4
}