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96b71a0d56
Client-side GL Transitions v1 across all three players with never-blank degradation: shader lib + generated manifest + real-WebGL CI, transition-as-widget normalization, persistent WebGL/GLES2 compositors (web/Tizen/native Android), image↔video wipes, SSRF-hardened media proxy, decode-gated image preload, dashboard picker. Fixes the playlist change-fingerprint that dropped transition edits. Alpha + on-device soak validated.
34 lines
1.3 KiB
GLSL
34 lines
1.3 KiB
GLSL
// Quantum Dither
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// blurb: Pixels stay undecided, shimmering between both frames, then collapse on an ordered threshold.
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// Author: Dan (ByteTinker)
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// License: MIT
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// GL Transitions v1 — GLSL ES 1.0, runs unmodified in WebGL1 and Android GLES2.
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uniform float grain; // = 180.0 [20.0..600.0]
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uniform float coherence; // = 0.6 [0.0..1.0]
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uniform float shimmer; // = 0.5 [0.0..1.0]
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uniform float edgeSoft; // = 0.10 [0.01..0.4]
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float bt_hash(vec2 p){ return fract(sin(dot(p, vec2(127.1, 311.7))) * 43758.5453123); }
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float bt_bayer2(vec2 a){ a = floor(a); return fract(a.x * 0.5 + a.y * a.y * 0.75); }
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float bt_bayer4(vec2 a){ return (bt_bayer2(a * 0.5) * 0.25 + bt_bayer2(a)) / 0.9375; }
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vec4 transition(vec2 uv){
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vec2 g = floor(uv * vec2(grain * ratio, grain));
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float n = bt_hash(g);
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float bo = bt_bayer4(g);
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float thr = mix(n, bo, coherence);
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float w = edgeSoft;
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float front = abs(progress - thr);
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float undecided = exp(-front / max(w, 0.01) * 1.4);
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thr += (bt_hash(g + floor(progress * 45.0) * 17.0) - 0.5) * shimmer * undecided * 0.5;
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float t = smoothstep(thr - w, thr + w, progress * (1.0 + 2.0 * w) - w);
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vec3 a = getFromColor(uv).rgb;
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vec3 b = getToColor(uv).rgb;
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vec3 col = mix(a, b, t);
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col += vec3(0.18, 0.55, 0.62) * undecided * shimmer * 0.5;
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return vec4(col, 1.0);
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}
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