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+ // Copyright (C) 2026 The Qt Company Ltd.
+ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
+
+ // Regression scene for QTBUG-148554.
+ // The sub-pass is declared under a Node hierarchy (so it has a real spatial
+ // node parent) and is referenced by id from the top-level pass via
+ // SubRenderPass. Before the fix the dependency-index loop would assign the
+ // sub-pass its parent node's index; a sub-pass must instead carry no
+ // dependency index, otherwise it can sort ahead of genuine top-level passes.
+
+ import QtQuick
+ import QtQuick3D
+ import QtQuick3D.Helpers
+
+ Item {
+ width: 400
+ height: 400
+
+ View3D {
+ anchors.fill: parent
+ renderOverrides: View3D.DisableInternalPasses
+
+ camera: cam
+ PerspectiveCamera { id: cam; position: Qt.vector3d(0, 0, 300) }
+ DirectionalLight {}
+
+ RenderPassTexture { id: mainTex; format: RenderPassTexture.RGBA8 }
+ RenderPassTexture { id: subTex; format: RenderPassTexture.RGBA8 }
+
+ // Sub-pass under a Node -> non-null node parentItem with a non-zero index.
+ Node {
+ RenderPass {
+ id: subPass
+ objectName: "subPass"
+ materialMode: RenderPass.OriginalMaterial
+ commands: [
+ ColorAttachment { target: subTex },
+ DepthStencilAttachment {},
+ RenderablesFilter { layerMask: ContentLayer.Layer1 }
+ ]
+ }
+ }
+
+ // Top-level pass that invokes the sub-pass above.
+ RenderPass {
+ id: mainPass
+ objectName: "mainPass"
+ clearColor: "magenta"
+ commands: [
+ ColorAttachment { target: mainTex },
+ DepthStencilAttachment {},
+ RenderablesFilter { renderableTypes: RenderablesFilter.None },
+ SubRenderPass { renderPass: subPass }
+ ]
+ }
+
+ SimpleQuadRenderer {
+ texture: Texture {
+ textureProvider: RenderOutputProvider {
+ textureSource: RenderOutputProvider.UserPassTexture
+ renderPass: mainPass
+ }
+ }
+ }
+
+ Model {
+ source: "#Cone"
+ layers: ContentLayer.Layer1
+ materials: PrincipledMaterial {
+ baseColor: "cyan"
+ lighting: PrincipledMaterial.NoLighting
+ }
+ }
+ }
+ }