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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.
41 lines
1.4 KiB
GLSL
41 lines
1.4 KiB
GLSL
// Trace Route
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// blurb: Copper traces route across the board and the new frame fills in behind them.
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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 pitch; // = 30.0 [6.0..90.0]
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uniform float wander; // = 0.45 [0.0..1.0]
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uniform float traceGlow;// = 1.4 [0.0..3.0]
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uniform float traceW; // = 0.10 [0.02..0.35]
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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 gv = vec2(pitch * ratio, pitch);
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vec2 cell = floor(uv * gv);
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vec2 f = fract(uv * gv);
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float march = (cell.x / gv.x) * 0.65 + abs(cell.y / gv.y - 0.5) * 0.35;
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float d = clamp(mix(march, bt_hash(cell), wander), 0.0, 0.92);
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float e = 0.07;
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float pp = progress * (1.0 + e);
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float fill = smoothstep(d, d + 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 col = mix(a, b, fill);
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float horiz = step(0.5, bt_hash(cell + 4.7));
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float line = mix(
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1.0 - smoothstep(0.0, traceW, abs(f.x - 0.5)),
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1.0 - smoothstep(0.0, traceW, abs(f.y - 0.5)),
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horiz);
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float pad = 1.0 - smoothstep(0.0, traceW * 1.6, length(f - 0.5));
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float front = exp(-abs(pp - d) / max(e, 0.005) * 1.5);
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front *= smoothstep(0.0, 0.05, progress) * (1.0 - smoothstep(0.92, 1.0, progress));
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col += vec3(1.0, 0.58, 0.20) * max(line, pad) * front * traceGlow;
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return vec4(col, 1.0);
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}
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