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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 setupHorizontalGaussianBlur3Tap( float inDestWidth, float inBlurAmount, vec2 inTexCoord )
++ {
++ float increment = inBlurAmount/inDestWidth;
++ TexCoord0 = vec2(inTexCoord.x + increment , inTexCoord.y );
++ TexCoord1 = vec2(inTexCoord.x , inTexCoord.y);
++ TexCoord2 = vec2(inTexCoord.x - increment , inTexCoord.y);
++ }
++
++ void MAIN()
++ {
++ setupHorizontalGaussianBlur3Tap(INPUT_SIZE.x, 1.0, INPUT_UV);
++ }