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++ // Copyright (C) 2023 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
++
++ VARYING vec2 TexCoord0;
++ VARYING vec2 TexCoord1;
++ VARYING vec2 TexCoord2;
++
++ void setupVerticalGaussianBlur3Tap( float inDestHeight, float inBlurAmount, vec2 inTexCoord )
++ {
++ float increment = inBlurAmount/inDestHeight;
++ TexCoord0 = vec2(inTexCoord.x, inTexCoord.y + increment );
++ TexCoord1 = vec2(inTexCoord.x, inTexCoord.y);
++ TexCoord2 = vec2(inTexCoord.x, inTexCoord.y - increment);
++ }
++
++ void MAIN()
++ {
++ setupVerticalGaussianBlur3Tap(INPUT_SIZE.y, 1.0, INPUT_UV);
++ }