Qt Quick 3D - 自定义效果范例

// Copyright (C) 2023 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
VARYING vec2 center_vec;
void MAIN()
{
    center_vec = INPUT_UV - vec2(0.5, 0.5);
    center_vec.y *= INPUT_SIZE.y / INPUT_SIZE.x;
}