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// Copyright (C) 2026 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
// CullMode override in SubRenderPass with OriginalMaterial.
// Phase 1 (useFrontCulling=false): Back culling -> white rectangle visible at center.
// Phase 2 (useFrontCulling=true): Front culling override -> rectangle culled -> black center.
import QtQuick
import QtQuick3D
import QtQuick3D.Helpers
Rectangle {
id: root
width: 400
height: 400
color: "black"
property bool useFrontCulling: false
View3D {
anchors.fill: parent
renderOverrides: View3D.DisableInternalPasses
camera: cam
PerspectiveCamera {
id: cam
position: Qt.vector3d(0, 0, 600)
}
RenderPassTexture {
id: colorBuffer
format: RenderPassTexture.RGBA16F
}
RenderPass {
id: mainPass
clearColor: Qt.rgba(0, 0, 0, 1)
commands: [
ColorAttachment { target: colorBuffer },
DepthStencilAttachment {},
RenderablesFilter { renderableTypes: RenderablesFilter.None },
SubRenderPass {
renderPass: RenderPass {
materialMode: RenderPass.OriginalMaterial
commands: [
PipelineStateOverride {
objectName: "pso"
cullMode: root.useFrontCulling ? PipelineStateOverride.Front
: PipelineStateOverride.Back
}
]
}
}
]
}
SimpleQuadRenderer {
texture: Texture {
textureProvider: RenderOutputProvider {
textureSource: RenderOutputProvider.UserPassTexture
renderPass: mainPass
}
}
}
Model {
source: "#Rectangle"
scale: Qt.vector3d(5, 5, 5)
materials: PrincipledMaterial {
baseColor: "white"
lighting: PrincipledMaterial.NoLighting
}
}
}
}