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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.
39 lines
1.4 KiB
GLSL
39 lines
1.4 KiB
GLSL
// Packet Loss
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// blurb: Blocks drop out of the stream, rows tear, and the new frame retransmits block by block.
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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 cols; // = 26.0 [4.0..80.0]
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uniform float rows; // = 15.0 [3.0..48.0]
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uniform float rowTear; // = 0.06 [0.0..0.3]
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uniform float garbage; // = 0.5 [0.0..1.0]
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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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float env = sin(3.14159265 * progress);
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vec2 bs = vec2(cols, rows);
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float rowId = floor(uv.y * rows);
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float tear = (bt_hash(vec2(rowId, floor(progress * 24.0))) - 0.5) * rowTear * env;
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vec2 uvt = vec2(fract(uv.x + tear), uv.y);
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vec2 blk = floor(uvt * bs);
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float dropT = 0.05 + bt_hash(blk) * 0.40;
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float backT = 0.55 + bt_hash(blk + 11.3) * 0.40;
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float gone = step(dropT, progress);
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float back = step(backT, progress);
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vec3 a = getFromColor(uvt).rgb;
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vec3 b = getToColor(uvt).rgb;
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vec3 junk = getFromColor(fract(uvt + vec2(bt_hash(blk + 3.1) * 0.5, bt_hash(blk + 5.7) * 0.5))).rgb;
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junk = junk.gbr * (0.4 + bt_hash(blk + 9.0) * 0.6);
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vec3 hole = mix(vec3(0.0), junk, garbage * step(0.55, bt_hash(blk + 2.2)));
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vec3 col = mix(a, hole, gone * (1.0 - back));
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col = mix(col, b, back);
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return vec4(col, 1.0);
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}
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