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Remove Oil Shader <3

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meoware.exe
2026-08-14 23:03:04 +10:00
parent 3c289debbb
commit 2c384fa0cb
6 changed files with 130 additions and 902 deletions
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plugins/radiant-lyrics-luna/src/backdrop.ts
+3 -73
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@@ -43,18 +43,14 @@ const CROSSFADE_RENDER_MS = 1400;
/** Mean luma of the art (measure source, not the moving canvas) */
let sampleCtx: CanvasRenderingContext2D | null = null;
const ensureSampler = (): CanvasRenderingContext2D | null => {
const measureLuminance = (source: CanvasImageSource): number | null => {
if (!sampleCtx) {
const sampler = document.createElement("canvas");
sampler.width = SAMPLE_SIZE;
sampler.height = SAMPLE_SIZE;
sampleCtx = sampler.getContext("2d", { willReadFrequently: true });
}
return sampleCtx;
};
const measureLuminance = (source: CanvasImageSource): number | null => {
if (!ensureSampler() || !sampleCtx) return null;
if (!sampleCtx) return null;
try {
sampleCtx.clearRect(0, 0, SAMPLE_SIZE, SAMPLE_SIZE);
sampleCtx.drawImage(source, 0, 0, SAMPLE_SIZE, SAMPLE_SIZE);
@@ -71,72 +67,6 @@ const measureLuminance = (source: CanvasImageSource): number | null => {
}
};
export type Rgb = [number, number, number];
const WHITE: Rgb = [1, 1, 1];
// Scale colours up to this (keeps hue)
const PALETTE_TARGET = 0.9;
// Too dark to use
const MIN_CHANNEL = 0.15;
// Too grey to use
const MIN_SATURATION = 0.08;
/** 3 dominant colours from the art (mono covers -> white) */
export const samplePalette = (source: CanvasImageSource): [Rgb, Rgb, Rgb] => {
if (!ensureSampler() || !sampleCtx) return [WHITE, WHITE, WHITE];
try {
sampleCtx.clearRect(0, 0, SAMPLE_SIZE, SAMPLE_SIZE);
sampleCtx.drawImage(source, 0, 0, SAMPLE_SIZE, SAMPLE_SIZE);
const { data } = sampleCtx.getImageData(0, 0, SAMPLE_SIZE, SAMPLE_SIZE);
// Coarse buckets so shades merge
const buckets = new Map<number, { n: number; r: number; g: number; b: number }>();
for (let i = 0; i < data.length; i += 4) {
const r = data[i] / 255;
const g = data[i + 1] / 255;
const b = data[i + 2] / 255;
const max = Math.max(r, g, b);
if (max < MIN_CHANNEL) continue;
if (max - Math.min(r, g, b) < MIN_SATURATION) continue;
const key =
((r * 7) | 0) * 64 + ((g * 7) | 0) * 8 + ((b * 7) | 0);
const hit = buckets.get(key);
if (hit) {
hit.n++;
hit.r += r;
hit.g += g;
hit.b += b;
} else {
buckets.set(key, { n: 1, r, g, b });
}
}
const ranked = [...buckets.values()]
.sort((a, b) => b.n - a.n)
.slice(0, 3)
// Average so it's not grid-snapped
.map((c): Rgb => [c.r / c.n, c.g / c.n, c.b / c.n])
// Dark covers give dark colours, so lift them
.map((c): Rgb => {
const max = Math.max(c[0], c[1], c[2]);
if (max <= 0) return WHITE;
const scale = PALETTE_TARGET / max;
return [c[0] * scale, c[1] * scale, c[2] * scale];
});
if (ranked.length === 0) return [WHITE, WHITE, WHITE];
// Cycle what we found (white would desaturate)
return [
ranked[0],
ranked[1] ?? ranked[0],
ranked[2] ?? ranked[1] ?? ranked[0],
];
} catch {
return [WHITE, WHITE, WHITE];
}
};
export class KawarpLayer {
private host: HTMLElement;
private canvas: HTMLCanvasElement;
@@ -223,7 +153,7 @@ export class KawarpLayer {
const width = Math.max(1, Math.round(rect.width * dpr));
// Aurora: render a single row of pixels and let CSS stretch it down the whole canvas (makes bands of color)
const height =
settings.backdropStyle === 3
settings.backdropStyle === 1
? 1
: Math.max(1, Math.round(rect.height * dpr));
if (this.canvas.width === width && this.canvas.height === height) return;