src/effects/shaders/downsample.vert


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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;
VARYING vec2 TexCoord3;

void MAIN()
{
    float xIncrement = .5 / INPUT_SIZE.x;
    float yIncrement = .5 / INPUT_SIZE.y;
    TexCoord0 = vec2( INPUT_UV.x + xIncrement, INPUT_UV.y + yIncrement );
    TexCoord1 = vec2( INPUT_UV.x - xIncrement, INPUT_UV.y - yIncrement );
    TexCoord2 = vec2( INPUT_UV.x - xIncrement, INPUT_UV.y + yIncrement );
    TexCoord3 = vec2( INPUT_UV.x + xIncrement, INPUT_UV.y - yIncrement );
}