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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
1.2 KiB
GLSL
39 lines
1.2 KiB
GLSL
// Thermal Bloom
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// blurb: The frame falls into false colour, blooms hot, and the next image cools back out of it.
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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 heat; // = 1.0 [0.0..1.0]
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uniform float blur; // = 0.010 [0.0..0.05]
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uniform float gain; // = 0.35 [0.0..1.2]
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vec3 bt_iron(float t){
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t = clamp(t, 0.0, 1.0);
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return clamp(vec3(
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smoothstep(0.05, 0.55, t) * 1.15,
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smoothstep(0.40, 0.98, t),
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smoothstep(0.0, 0.22, t) * 0.62 - smoothstep(0.22, 0.62, t) * 0.60 + smoothstep(0.78, 1.0, t)
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), 0.0, 1.0);
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}
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vec4 transition(vec2 uv){
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float env = sin(3.14159265 * progress);
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float t = smoothstep(0.34, 0.66, progress);
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float r = blur * env;
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vec3 a = vec3(0.0), b = vec3(0.0);
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for(int i = 0; i < 5; i++){
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float f = (float(i) - 2.0) * 0.5;
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a += getFromColor(clamp(uv + vec2(f * r * ratio, f * r), 0.0, 1.0)).rgb;
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b += getToColor(clamp(uv + vec2(f * r * ratio, -f * r), 0.0, 1.0)).rgb;
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}
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a /= 5.0; b /= 5.0;
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vec3 real = mix(a, b, t);
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float lum = dot(real, vec3(0.299, 0.587, 0.114));
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vec3 thermal = bt_iron(lum + env * gain);
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vec3 col = mix(real, thermal, env * heat);
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return vec4(col, 1.0);
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}
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