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++ // Copyright (C) 2026 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
++
++ // PipelineStateOverride viewport test.
++ // A large yellow sphere fills the entire view under normal rendering.
++ // The C++ test sets PipelineStateOverride.viewport at runtime to the RIGHT half
++ // of the render target (using device-pixel coordinates), so the sphere only
++ // appears in the right half while the left half stays black (clear colour).
++ // The test then switches the viewport to the LEFT half and verifies the result
++ // flips accordingly.
++
++ import QtQuick
++ import QtQuick3D
++ import QtQuick3D.Helpers
++
++ Item {
++ id: root
++ width: 400
++ height: 400
++
++ View3D {
++ anchors.fill: parent
++ renderOverrides: View3D.DisableInternalPasses
++
++ environment: SceneEnvironment {
++ backgroundMode: SceneEnvironment.Color
++ clearColor: "black"
++ }
++
++ PerspectiveCamera {
++ position: Qt.vector3d(0, 0, 300)
++ }
++
++ RenderPassTexture {
++ id: colorTex
++ format: RenderPassTexture.RGBA8
++ }
++
++ RenderPass {
++ id: mainPass
++ materialMode: RenderPass.OriginalMaterial
++ clearColor: "black"
++
++ commands: [
++ ColorAttachment { target: colorTex },
++ DepthStencilAttachment {},
++ // viewport set to an empty rect initially;
++ // the C++ test calls pso->setProperty("viewport", ...) with
++ // device-pixel coordinates computed from the window's DPR.
++ PipelineStateOverride {
++ objectName: "pso"
++ }
++ ]
++ }
++
++ SimpleQuadRenderer {
++ texture: Texture {
++ textureProvider: RenderOutputProvider {
++ textureSource: RenderOutputProvider.UserPassTexture
++ renderPass: mainPass
++ attachmentSelector: RenderOutputProvider.Attachment0
++ }
++ }
++ }
++
++ // Large yellow sphere that would fill the entire view without a viewport override
++ Model {
++ source: "#Sphere"
++ scale: Qt.vector3d(4, 4, 4)
++ materials: PrincipledMaterial {
++ baseColor: "yellow"
++ lighting: PrincipledMaterial.NoLighting
++ }
++ }
++ }
++ }