mirror of
https://github.com/screentinker/screentinker.git
synced 2026-08-13 22:03:13 -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.
48 lines
1.9 KiB
GLSL
48 lines
1.9 KiB
GLSL
// Reel Change
|
|
// blurb: Cue mark burns in the corner, the splice jumps the frame, dust settles on the new reel.
|
|
// Author: Dan (ByteTinker)
|
|
// License: MIT
|
|
// GL Transitions v1 — GLSL ES 1.0, runs unmodified in WebGL1 and Android GLES2.
|
|
uniform float cueSize; // = 0.045 [0.0..0.12]
|
|
uniform float jumpAmt; // = 0.16 [0.0..0.5]
|
|
uniform float dust; // = 0.6 [0.0..1.0]
|
|
uniform float scratch; // = 0.5 [0.0..1.0]
|
|
|
|
float bt_hash(vec2 p){ return fract(sin(dot(p, vec2(127.1, 311.7))) * 43758.5453123); }
|
|
|
|
vec4 transition(vec2 uv){
|
|
float e = progress;
|
|
float splice = clamp((e - 0.46) / 0.16, 0.0, 1.0);
|
|
float active = step(0.46, e) * step(e, 0.62);
|
|
|
|
// stepped misregistration through the splice
|
|
float k = floor(splice * 4.0);
|
|
float off = (bt_hash(vec2(k, 2.0)) - 0.5) * jumpAmt * (1.0 - splice) * active;
|
|
|
|
vec2 su = vec2(uv.x, fract(uv.y + off));
|
|
vec3 a = getFromColor(su).rgb;
|
|
vec3 b = getToColor(su).rgb;
|
|
vec3 col = mix(a, b, step(0.54, e));
|
|
|
|
// black frame bar riding through during the splice
|
|
float barY = fract(uv.y + off * 3.0 + k * 0.37);
|
|
float bar = (1.0 - smoothstep(0.0, 0.045, abs(barY - 0.5))) * active;
|
|
col = mix(col, vec3(0.02), bar);
|
|
|
|
// cue mark, upper right, four-frame flicker
|
|
vec2 cp = (uv - vec2(0.865, 0.855)) * vec2(ratio, 1.0);
|
|
float ring = 1.0 - smoothstep(cueSize * 0.72, cueSize, length(cp));
|
|
float cueWin = step(0.20, e) * step(e, 0.47);
|
|
float flick = 0.55 + 0.45 * step(0.5, fract(e * 26.0));
|
|
col += vec3(1.0, 0.94, 0.80) * ring * cueWin * flick * 0.85;
|
|
|
|
// dust and scratches, decaying after the change
|
|
float decay = exp(-max(e - 0.54, 0.0) * 9.0) * step(0.46, e);
|
|
float sp = bt_hash(uv * vec2(300.0, 170.0) + floor(e * 40.0));
|
|
col += vec3(0.9) * step(0.9975, sp) * dust * decay;
|
|
float sc = bt_hash(vec2(floor(uv.x * 260.0), floor(e * 20.0)));
|
|
col += vec3(0.85, 0.82, 0.74) * step(0.995, sc) * scratch * decay * 0.7;
|
|
|
|
return vec4(col, 1.0);
|
|
}
|