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++ // Copyright (C) 2026 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
++
++ void MAIN()
++ {
++ // Reading the normal texture makes the layer run the normal pass for this
++ // material.
++ FRAGCOLOR = vec4(texture(NORMAL_ROUGHNESS_TEXTURE, vec2(0.5)).rgb * 0.5 + 0.5, 1.0);
++ }