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++ // Copyright (C) 2025 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
++
++ #if QSHADER_VIEW_COUNT >= 2
++ #define SAMPLE_NORMAL_AND_ROUGHNESS(uv) texture(NORMAL_ROUGHNESS_TEXTURE, uv)
++ #else
++ #define SAMPLE_NORMAL_AND_ROUGHNESS(uv) texture(NORMAL_ROUGHNESS_TEXTURE, uv)
++ #endif
++
++ void MAIN()
++ {
++ float r = clamp(SAMPLE_NORMAL_AND_ROUGHNESS(INPUT_UV).a, 0.0, 1.0);
++ bool roughOK = r < roughnessCut;
++ bool eligible = roughOK;
++ FRAGCOLOR = vec4(0.0, 0.0, 0.0, eligible ? 1.0 : 0.0);
++ }