mirror of
https://github.com/screentinker/screentinker.git
synced 2026-08-14 06:16:20 -06:00
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.
38 lines
1.3 KiB
GLSL
38 lines
1.3 KiB
GLSL
// Datamosh
|
||
// blurb: P-frame corruption — the old frame’s gradients smear the new one until the blocks give up.
|
||
// Author: Dan (ByteTinker)
|
||
// License: MIT
|
||
// GL Transitions v1 — GLSL ES 1.0, runs unmodified in WebGL1 and Android GLES2.
|
||
uniform float blockSize; // = 30.0 [6.0..90.0]
|
||
uniform float bleed; // = 0.45 [0.0..1.5]
|
||
uniform float chroma; // = 0.5 [0.0..2.0]
|
||
|
||
float bt_hash(vec2 p){ return fract(sin(dot(p, vec2(127.1, 311.7))) * 43758.5453123); }
|
||
|
||
vec4 transition(vec2 uv){
|
||
float env = sin(3.14159265 * progress);
|
||
vec2 bs = vec2(blockSize * ratio, blockSize);
|
||
vec2 blk = floor(uv * bs);
|
||
|
||
vec3 c0 = getFromColor((blk + 0.5) / bs).rgb;
|
||
vec3 c1 = getFromColor((blk + vec2(1.5, 0.5)) / bs).rgb;
|
||
vec3 c2 = getFromColor((blk + vec2(0.5, 1.5)) / bs).rgb;
|
||
vec2 mv = vec2(dot(c1 - c0, vec3(0.333)), dot(c2 - c0, vec3(0.333)));
|
||
mv *= bleed * env * 5.0;
|
||
|
||
float keep = step(progress, bt_hash(blk) * 0.85 + 0.10);
|
||
|
||
vec3 A = getFromColor(fract(uv + mv)).rgb;
|
||
vec2 ub = fract(uv + mv * 0.5);
|
||
vec3 B;
|
||
float ch = chroma * env * 0.01;
|
||
B.r = getToColor(fract(ub + vec2(ch, 0.0))).r;
|
||
B.g = getToColor(ub).g;
|
||
B.b = getToColor(fract(ub - vec2(ch, 0.0))).b;
|
||
|
||
vec3 res = mix(B, A, keep);
|
||
float q = mix(255.0, 10.0, env);
|
||
res = floor(res * q) / q;
|
||
return vec4(res, 1.0);
|
||
}
|