Simon Schneegans
51 lines
2.0 KiB
GLSL
51 lines
2.0 KiB
GLSL
//////////////////////////////////////////////////////////////////////////////////////////
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// ) ( //
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// ( /( ( ( ) ( ( ( ( )\ ) ( ( //
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// )\()) ))\ )( ( ( )\ ) )\))( )\ ( (()/( ( )\))( ( //
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// ((_)\ /((_|()\ )\ ) )\ '(()/( ((_)()((_) )\ ) ((_)))\((_)()\ )\ //
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// | |(_|_))( ((_)_(_/( _((_)) )(_)) _(()((_|_)_(_/( _| |((_)(()((_|(_) //
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// | '_ \ || | '_| ' \)) | ' \()| || | \ V V / | ' \)) _` / _ \ V V (_-< //
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// |_.__/\_,_|_| |_||_| |_|_|_| \_, | \_/\_/|_|_||_|\__,_\___/\_/\_//__/ //
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// |__/ //
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//////////////////////////////////////////////////////////////////////////////////////////
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// SPDX-FileCopyrightText: Simon Schneegans <code@simonschneegans.de>
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// SPDX-License-Identifier: GPL-3.0-or-later
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// The content from common.glsl is automatically prepended to each shader effect.
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uniform float uScale;
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uniform float uSquish;
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uniform float uTilt;
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uniform float uShift;
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void main() {
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// We reverse the progress for window opening.
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float progress = easeOutQuad(uProgress);
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progress = uForOpening ? 1.0 - progress : progress;
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// Put texture coordinate origin to center of window.
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vec2 coords = iTexCoord.st * 2.0 - 1.0;
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// Scale image texture with progress.
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coords /= mix(1.0, uScale, progress);
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// Squish image texture vertically.
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coords.y /= mix(1.0, (1.0 - 0.2 * uSquish), progress);
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// 'Tilt' image texture around x-axis.
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coords.x /= mix(1.0, 1.0 - 0.1 * uTilt * coords.y, progress);
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// Move image texture vertically.
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coords.y += uShift * progress;
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// Move texture coordinate center to corner again.
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coords = coords * 0.5 + 0.5;
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vec4 oColor = getInputColor(coords);
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// Dissolve window.
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oColor.a = oColor.a * (uForOpening ? uProgress : pow(1.0 - uProgress, 2.0));
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setOutputColor(oColor);
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} |