Simon Schneegans
69 lines
2.8 KiB
GLSL
69 lines
2.8 KiB
GLSL
//////////////////////////////////////////////////////////////////////////////////////////
|
|
// ) ( //
|
|
// ( /( ( ( ) ( ( ( ( )\ ) ( ( //
|
|
// )\()) ))\ )( ( ( )\ ) )\))( )\ ( (()/( ( )\))( ( //
|
|
// ((_)\ /((_|()\ )\ ) )\ '(()/( ((_)()((_) )\ ) ((_)))\((_)()\ )\ //
|
|
// | |(_|_))( ((_)_(_/( _((_)) )(_)) _(()((_|_)_(_/( _| |((_)(()((_|(_) //
|
|
// | '_ \ || | '_| ' \)) | ' \()| || | \ V V / | ' \)) _` / _ \ 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 vec2 uActorScale;
|
|
uniform vec2 uInitialPointerPos;
|
|
uniform vec2 uCurrentPointerPos;
|
|
uniform vec2 uControlPointA;
|
|
uniform vec2 uControlPointB;
|
|
|
|
vec2 threeWayMix(float fac, vec2 a, vec2 b, vec2 c) {
|
|
if (fac < 0.5) {
|
|
return mix(a, b, smoothstep(0.0, 1.0, fac * 2.0));
|
|
}
|
|
|
|
return mix(b, c, smoothstep(0.0, 1.0, fac * 2.0 - 1.0));
|
|
}
|
|
|
|
void main() {
|
|
|
|
vec2 texcoord = iTexCoord.st;
|
|
texcoord = texcoord * uActorScale + 0.5 - uActorScale * 0.5;
|
|
|
|
float circle = length((texcoord - uCurrentPointerPos) / uActorScale * 2.0);
|
|
float progress = uForOpening ? 1.0 - uProgress : uProgress;
|
|
progress = clamp(mix(max(0.0, uProgress*2.0 - circle), 2.0 * uProgress, uProgress), 0.0, 1.0);
|
|
// progress = smoothstep(0.0, 1.0, pow(2.0 * progress - circle, 0.5));
|
|
|
|
vec2 warpA = (texcoord - uControlPointA) * uProgress * progress / (1.0 - uProgress);
|
|
vec2 warpB = (texcoord - uControlPointB) * uProgress * progress / (1.0 - uProgress);
|
|
vec2 warpC = (texcoord - uCurrentPointerPos) * uProgress * progress / (1.0 - uProgress);
|
|
|
|
vec2 warp = threeWayMix(progress, warpA, warpB, warpC);
|
|
// vec2 warp = (warpA + warpB + warpC) / (progressA + progressB + progressC);
|
|
|
|
vec4 oColor = getInputColor(texcoord + warp);
|
|
|
|
// oColor = vec4(tritone(progress, vec3(1.0, 0.0, 0.0), vec3(0.0, 1.0, 0.0), vec3(0.0, 0.0, 1.0)), 1.0);
|
|
|
|
// if (length(texcoord - uInitialPointerPos) < 0.02) {
|
|
// oColor = vec4(1.0);
|
|
// }
|
|
|
|
// if (length(texcoord - uCurrentPointerPos) < 0.02) {
|
|
// oColor = vec4(1.0, 0.0, 0.0, 1.0);
|
|
// }
|
|
|
|
// if (length(texcoord - uControlPointA) < 0.02) {
|
|
// oColor = vec4(0.0, 1.0, 0.0, 1.0);
|
|
// }
|
|
|
|
// if (length(texcoord - uControlPointB) < 0.02) {
|
|
// oColor = vec4(0.0, 0.0, 1.0, 1.0);
|
|
// }
|
|
|
|
setOutputColor(oColor);
|
|
} |