58 lines
1.5 KiB
JavaScript
58 lines
1.5 KiB
JavaScript
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/**
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* Light dome animation coloration shader
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*/
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class LightDomeColorationShader extends AdaptiveColorationShader {
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/** @override */
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static forceDefaultColor = true;
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/** @override */
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static fragmentShader = `
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${this.SHADER_HEADER}
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${this.PRNG}
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${this.NOISE}
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${this.FBM(2)}
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${this.PERCEIVED_BRIGHTNESS}
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// Rotate and scale uv
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vec2 transform(in vec2 uv, in float dist) {
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float hspherize = (1.0 - sqrt(1.0 - dist)) / dist;
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float t = time * 0.02;
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mat2 rotmat = mat2(cos(t), -sin(t), sin(t), cos(t));
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mat2 scalemat = mat2(8.0 * intensity, 0.0, 0.0, 8.0 * intensity);
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uv -= PIVOT;
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uv *= rotmat * scalemat * hspherize;
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uv += PIVOT;
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return uv;
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}
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vec3 ripples(in vec2 uv) {
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// creating the palette
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vec3 c1 = color * 0.550;
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vec3 c2 = color * 0.020;
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vec3 c3 = color * 0.3;
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vec3 c4 = color;
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vec3 c5 = color * 0.025;
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vec3 c6 = color * 0.200;
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vec2 p = uv + vec2(5.0);
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float q = 2.0 * fbm(p + time * 0.2);
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vec2 r = vec2(fbm(p + q + ( time ) - p.x - p.y), fbm(p * 2.0 + ( time )));
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return clamp( mix( c1, c2, abs(fbm(p + r)) ) + mix( c3, c4, abs(r.x * r.x * r.x) ) - mix( c5, c6, abs(r.y * r.y)), vec3(0.0), vec3(1.0));
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}
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void main() {
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${this.FRAGMENT_BEGIN}
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// to hemispherize, rotate and magnify
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vec2 uv = transform(vUvs, dist);
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finalColor = ripples(uv) * pow(1.0 - dist, 0.25) * colorationAlpha;
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${this.COLORATION_TECHNIQUES}
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${this.ADJUSTMENTS}
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${this.FALLOFF}
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${this.FRAGMENT_END}
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}`;
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}
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