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https://github.com/screentinker/screentinker.git
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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.
33 lines
1.1 KiB
GLSL
33 lines
1.1 KiB
GLSL
// Etch
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// blurb: Photomask reveal — the frame develops in on a stepper field, with a hot exposure edge.
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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 cellSize; // = 26.0 [6.0..90.0]
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uniform float edgeGlow; // = 1.0 [0.0..3.0]
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uniform float randomness;// = 0.55 [0.0..1.0]
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uniform float softness; // = 0.09 [0.005..0.3]
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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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vec4 transition(vec2 uv){
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vec2 g = floor(uv * vec2(cellSize * ratio, cellSize));
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float m = bt_hash(g);
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float sweep = (uv.x + uv.y) * 0.5;
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float mask = clamp(mix(sweep, m, randomness), 0.0, 1.0);
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float e = softness;
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float pp = progress * (1.0 + e);
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float t = smoothstep(mask, mask + e, pp);
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vec3 a = getFromColor(uv).rgb;
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vec3 b = getToColor(uv).rgb;
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vec3 res = mix(a, b, t);
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float edge = exp(-abs(pp - mask) / max(e, 0.005) * 1.6);
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edge *= (1.0 - smoothstep(0.92, 1.0, progress)) * smoothstep(0.0, 0.05, progress);
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res += vec3(1.0, 0.70, 0.22) * edge * edgeGlow * 0.7;
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return vec4(res, 1.0);
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}
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