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feat: optimize dither backgrounds #332

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Merged
merged 1 commit into from
Jul 23, 2025
Merged

feat: optimize dither backgrounds #332

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61 changes: 41 additions & 20 deletions src/content/Backgrounds/Dither/Dither.jsx
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,11 +1,11 @@
/* eslint-disable react/no-unknown-property */
import { useRef, useState, useEffect, forwardRef } from "react";
import { useRef, useEffect, forwardRef } from "react";
import { Canvas, useFrame, useThree } from "@react-three/fiber";
import { EffectComposer, wrapEffect } from "@react-three/postprocessing";
import { Effect } from "postprocessing";
import * as THREE from "three";

import './Dither.css';
import "./Dither.css";

const waveVertexShader = `
precision highp float;
Expand Down Expand Up @@ -63,7 +63,7 @@ float cnoise(vec2 P) {
return 2.3 * mix(n_x.x, n_x.y, fade_xy.y);
}

const int OCTAVES = 8;
const int OCTAVES = 4;
float fbm(vec2 p) {
float value = 0.0;
float amp = 1.0;
Expand All @@ -78,7 +78,7 @@ float fbm(vec2 p) {

float pattern(vec2 p) {
vec2 p2 = p - time * waveSpeed;
return fbm(p - fbm(p + fbm(p2)));
return fbm(p + fbm(p2));
}

void main() {
Expand Down Expand Up @@ -143,10 +143,18 @@ class RetroEffectImpl extends Effect {
super("RetroEffect", ditherFragmentShader, { uniforms });
this.uniforms = uniforms;
}
set colorNum(v) { this.uniforms.get("colorNum").value = v; }
get colorNum() { return this.uniforms.get("colorNum").value; }
set pixelSize(v) { this.uniforms.get("pixelSize").value = v; }
get pixelSize() { return this.uniforms.get("pixelSize").value; }
set colorNum(v) {
this.uniforms.get("colorNum").value = v;
}
get colorNum() {
return this.uniforms.get("colorNum").value;
}
set pixelSize(v) {
this.uniforms.get("pixelSize").value = v;
}
get pixelSize() {
return this.uniforms.get("pixelSize").value;
}
}

const WrappedRetro = wrapEffect(RetroEffectImpl);
Expand All @@ -169,7 +177,7 @@ function DitheredWaves({
mouseRadius,
}) {
const mesh = useRef(null);
const [mousePos, setMousePos] = useState({ x: 0, y: 0 });
const mouseRef = useRef(new THREE.Vector2());
const { viewport, size, gl } = useThree();

const waveUniformsRef = useRef({
Expand All @@ -194,28 +202,41 @@ function DitheredWaves({
}
}, [size, gl]);

const prevColor = useRef([...waveColor]);
useFrame(({ clock }) => {
const u = waveUniformsRef.current;
if (!disableAnimation) u.time.value = clock.getElapsedTime();
u.waveSpeed.value = waveSpeed;
u.waveFrequency.value = waveFrequency;
u.waveAmplitude.value = waveAmplitude;
u.waveColor.value.set(...waveColor);

if (!disableAnimation) {
u.time.value = clock.getElapsedTime();
}

if (u.waveSpeed.value !== waveSpeed) u.waveSpeed.value = waveSpeed;
if (u.waveFrequency.value !== waveFrequency)
u.waveFrequency.value = waveFrequency;
if (u.waveAmplitude.value !== waveAmplitude)
u.waveAmplitude.value = waveAmplitude;

if (!prevColor.current.every((v, i) => v === waveColor[i])) {
u.waveColor.value.set(...waveColor);
prevColor.current = [...waveColor];
}

u.enableMouseInteraction.value = enableMouseInteraction ? 1 : 0;
u.mouseRadius.value = mouseRadius;

if (enableMouseInteraction) {
u.mousePos.value.set(mousePos.x, mousePos.y);
u.mousePos.value.copy(mouseRef.current);
}
});

const handlePointerMove = (e) => {
if (!enableMouseInteraction) return;
const rect = gl.domElement.getBoundingClientRect();
const dpr = gl.getPixelRatio();
setMousePos({
x: (e.clientX - rect.left) * dpr,
y: (e.clientY - rect.top) * dpr,
});
mouseRef.current.set(
(e.clientX - rect.left) * dpr,
(e.clientY - rect.top) * dpr
);
};

return (
Expand Down Expand Up @@ -277,4 +298,4 @@ export default function Dither({
/>
</Canvas>
);
}
}
59 changes: 40 additions & 19 deletions src/tailwind/Backgrounds/Dither/Dither.jsx
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
/* eslint-disable react/no-unknown-property */
import { useRef, useState, useEffect, forwardRef } from "react";
import { useRef, useEffect, forwardRef } from "react";
import { Canvas, useFrame, useThree } from "@react-three/fiber";
import { EffectComposer, wrapEffect } from "@react-three/postprocessing";
import { Effect } from "postprocessing";
Expand Down Expand Up @@ -61,7 +61,7 @@ float cnoise(vec2 P) {
return 2.3 * mix(n_x.x, n_x.y, fade_xy.y);
}

const int OCTAVES = 8;
const int OCTAVES = 4;
float fbm(vec2 p) {
float value = 0.0;
float amp = 1.0;
Expand All @@ -76,7 +76,7 @@ float fbm(vec2 p) {

float pattern(vec2 p) {
vec2 p2 = p - time * waveSpeed;
return fbm(p - fbm(p + fbm(p2)));
return fbm(p + fbm(p2));
}

void main() {
Expand Down Expand Up @@ -141,10 +141,18 @@ class RetroEffectImpl extends Effect {
super("RetroEffect", ditherFragmentShader, { uniforms });
this.uniforms = uniforms;
}
set colorNum(v) { this.uniforms.get("colorNum").value = v; }
get colorNum() { return this.uniforms.get("colorNum").value; }
set pixelSize(v) { this.uniforms.get("pixelSize").value = v; }
get pixelSize() { return this.uniforms.get("pixelSize").value; }
set colorNum(v) {
this.uniforms.get("colorNum").value = v;
}
get colorNum() {
return this.uniforms.get("colorNum").value;
}
set pixelSize(v) {
this.uniforms.get("pixelSize").value = v;
}
get pixelSize() {
return this.uniforms.get("pixelSize").value;
}
}

const WrappedRetro = wrapEffect(RetroEffectImpl);
Expand All @@ -167,7 +175,7 @@ function DitheredWaves({
mouseRadius,
}) {
const mesh = useRef(null);
const [mousePos, setMousePos] = useState({ x: 0, y: 0 });
const mouseRef = useRef(new THREE.Vector2());
const { viewport, size, gl } = useThree();

const waveUniformsRef = useRef({
Expand All @@ -192,28 +200,41 @@ function DitheredWaves({
}
}, [size, gl]);

const prevColor = useRef([...waveColor]);
useFrame(({ clock }) => {
const u = waveUniformsRef.current;
if (!disableAnimation) u.time.value = clock.getElapsedTime();
u.waveSpeed.value = waveSpeed;
u.waveFrequency.value = waveFrequency;
u.waveAmplitude.value = waveAmplitude;
u.waveColor.value.set(...waveColor);

if (!disableAnimation) {
u.time.value = clock.getElapsedTime();
}

if (u.waveSpeed.value !== waveSpeed) u.waveSpeed.value = waveSpeed;
if (u.waveFrequency.value !== waveFrequency)
u.waveFrequency.value = waveFrequency;
if (u.waveAmplitude.value !== waveAmplitude)
u.waveAmplitude.value = waveAmplitude;

if (!prevColor.current.every((v, i) => v === waveColor[i])) {
u.waveColor.value.set(...waveColor);
prevColor.current = [...waveColor];
}

u.enableMouseInteraction.value = enableMouseInteraction ? 1 : 0;
u.mouseRadius.value = mouseRadius;

if (enableMouseInteraction) {
u.mousePos.value.set(mousePos.x, mousePos.y);
u.mousePos.value.copy(mouseRef.current);
}
});

const handlePointerMove = (e) => {
if (!enableMouseInteraction) return;
const rect = gl.domElement.getBoundingClientRect();
const dpr = gl.getPixelRatio();
setMousePos({
x: (e.clientX - rect.left) * dpr,
y: (e.clientY - rect.top) * dpr,
});
mouseRef.current.set(
(e.clientX - rect.left) * dpr,
(e.clientY - rect.top) * dpr
);
};

return (
Expand Down Expand Up @@ -275,4 +296,4 @@ export default function Dither({
/>
</Canvas>
);
}
}
68 changes: 39 additions & 29 deletions src/ts-default/Backgrounds/Dither/Dither.tsx
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
/* eslint-disable react/no-unknown-property */
import { useRef, useState, useEffect } from "react";
import { useRef, useEffect, forwardRef } from "react";
import { Canvas, useFrame, useThree, ThreeEvent } from "@react-three/fiber";
import { EffectComposer, wrapEffect } from "@react-three/postprocessing";
import { Effect } from "postprocessing";
Expand Down Expand Up @@ -63,7 +63,7 @@ float cnoise(vec2 P) {
return 2.3 * mix(n_x.x, n_x.y, fade_xy.y);
}

const int OCTAVES = 8;
const int OCTAVES = 4;
float fbm(vec2 p) {
float value = 0.0;
float amp = 1.0;
Expand All @@ -78,7 +78,7 @@ float fbm(vec2 p) {

float pattern(vec2 p) {
vec2 p2 = p - time * waveSpeed;
return fbm(p - fbm(p + fbm(p2)));
return fbm(p + fbm(p2));
}

void main() {
Expand Down Expand Up @@ -158,17 +158,18 @@ class RetroEffectImpl extends Effect {
}
}

import { forwardRef } from 'react';

const RetroEffect = forwardRef<RetroEffectImpl, { colorNum: number; pixelSize: number }>(
(props, ref) => {
const { colorNum, pixelSize } = props;
const WrappedRetroEffect = wrapEffect(RetroEffectImpl);
return <WrappedRetroEffect ref={ref} colorNum={colorNum} pixelSize={pixelSize} />;
}
);
const RetroEffect = forwardRef<
RetroEffectImpl,
{ colorNum: number; pixelSize: number }
>((props, ref) => {
const { colorNum, pixelSize } = props;
const WrappedRetroEffect = wrapEffect(RetroEffectImpl);
return (
<WrappedRetroEffect ref={ref} colorNum={colorNum} pixelSize={pixelSize} />
);
});

RetroEffect.displayName = 'RetroEffect';
RetroEffect.displayName = "RetroEffect";

interface WaveUniforms {
[key: string]: THREE.Uniform<any>;
Expand Down Expand Up @@ -207,10 +208,7 @@ function DitheredWaves({
mouseRadius,
}: DitheredWavesProps) {
const mesh = useRef<THREE.Mesh>(null);
const [mousePos, setMousePos] = useState<{ x: number; y: number }>({
x: 0,
y: 0,
});
const mouseRef = useRef(new THREE.Vector2());
const { viewport, size, gl } = useThree();

const waveUniformsRef = useRef<WaveUniforms>({
Expand All @@ -235,29 +233,41 @@ function DitheredWaves({
}
}, [size, gl]);

const prevColor = useRef([...waveColor]);
useFrame(({ clock }) => {
const u = waveUniformsRef.current;

if (!disableAnimation) {
waveUniformsRef.current.time.value = clock.getElapsedTime();
u.time.value = clock.getElapsedTime();
}

if (u.waveSpeed.value !== waveSpeed) u.waveSpeed.value = waveSpeed;
if (u.waveFrequency.value !== waveFrequency)
u.waveFrequency.value = waveFrequency;
if (u.waveAmplitude.value !== waveAmplitude)
u.waveAmplitude.value = waveAmplitude;

if (!prevColor.current.every((v, i) => v === waveColor[i])) {
u.waveColor.value.set(...waveColor);
prevColor.current = [...waveColor];
}
waveUniformsRef.current.waveSpeed.value = waveSpeed;
waveUniformsRef.current.waveFrequency.value = waveFrequency;
waveUniformsRef.current.waveAmplitude.value = waveAmplitude;
waveUniformsRef.current.waveColor.value.set(...waveColor);
waveUniformsRef.current.enableMouseInteraction.value =
enableMouseInteraction ? 1 : 0;
waveUniformsRef.current.mouseRadius.value = mouseRadius;

u.enableMouseInteraction.value = enableMouseInteraction ? 1 : 0;
u.mouseRadius.value = mouseRadius;

if (enableMouseInteraction) {
waveUniformsRef.current.mousePos.value.set(mousePos.x, mousePos.y);
u.mousePos.value.copy(mouseRef.current);
}
});

const handlePointerMove = (e: ThreeEvent<PointerEvent>) => {
if (!enableMouseInteraction) return;
const rect = gl.domElement.getBoundingClientRect();
const dpr = gl.getPixelRatio();
const x = (e.clientX - rect.left) * dpr;
const y = (e.clientY - rect.top) * dpr;
setMousePos({ x, y });
mouseRef.current.set(
(e.clientX - rect.left) * dpr,
(e.clientY - rect.top) * dpr
);
};

return (
Expand Down
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