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++ // Copyright (C) 2023 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++
++ VARYING vec4 vCustomData;
++ VARYING vec3 vGlobalPosition;
++ void MAIN()
++ {
++ vCustomData = INSTANCE_DATA;
++
++ // MODEL_MATRIX does not exist when instancing
++ vec4 pos = INSTANCE_MODEL_MATRIX * vec4(VERTEX, 1.0);
++ vGlobalPosition = pos.xyz;
++ }