🎉 Add simple glide effect

2022-11-01 21:55:52 +01:00
parent 69066a144a
commit a3297ce9f5
7 changed files with 665 additions and 0 deletions
@@ -0,0 +1,47 @@
+//////////////////////////////////////////////////////////////////////////////////////////
+//          )                                                   (                       //
+//       ( /(   (  (               )    (       (  (  (         )\ )    (  (            //
+//       )\()) ))\ )(   (         (     )\ )    )\))( )\  (    (()/( (  )\))(  (        //
+//      ((_)\ /((_|()\  )\ )      )\  '(()/(   ((_)()((_) )\ )  ((_)))\((_)()\ )\       //
+//      | |(_|_))( ((_)_(_/(    _((_))  )(_))  _(()((_|_)_(_/(  _| |((_)(()((_|(_)      //
+//      | '_ \ || | '_| ' \))  | '  \()| || |  \ V  V / | ' \)) _` / _ \ V  V (_-<      //
+//      |_.__/\_,_|_| |_||_|   |_|_|_|  \_, |   \_/\_/|_|_||_|\__,_\___/\_/\_//__/      //
+//                                 |__/                                                 //
+//////////////////////////////////////////////////////////////////////////////////////////
+
+// SPDX-FileCopyrightText: Simon Schneegans <code@simonschneegans.de>
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+// The content from common.glsl is automatically prepended to each shader effect.
+
+uniform float uScale;
+uniform float uSquish;
+uniform float uTilt;
+
+void main() {
+  float progress = easeOutQuad(uProgress);
+  progress       = uForOpening ? 1.0 - progress : progress;
+
+  vec2 coords = iTexCoord.st * 2.0 - 1.0;
+
+  coords /= mix(1.0, uScale, progress);
+
+  coords.y /= mix(1.0, (1.0 - uSquish), progress);
+
+  coords.x /= mix(1.0, 1.0 - uTilt * coords.y, progress);
+
+  coords = coords * 0.5 + 0.5;
+
+  vec4 oColor = getInputColor(coords);
+
+  // Dissolve window to effect color / transparency.
+  oColor.a = oColor.a * (1.0 - progress);
+
+  // These are pretty useful for understanding how this works.
+  // oColor = vec4(masks, 0.0, 1.0);
+  // oColor = vec4(vec3(masks.x), 1.0);
+  // oColor = vec4(vec3(masks.y), 1.0);
+  // oColor = vec4(vec3(particles), 1.0);
+
+  setOutputColor(oColor);
+}