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Merged
merged 1 commit into from
Jan 10, 2024
Merged

update demo site #51

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222 changes: 206 additions & 16 deletions app/_home/index.tsx
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Original file line number Diff line number Diff line change
@@ -1,19 +1,45 @@
import * as THREE from "three";
import { useRef } from "react";
import { useMemo, useRef, useState, useEffect } from "react";
import { useFrame, useThree } from "@react-three/fiber";
import {
useNoise,
useFluid,
useFxBlending,
useColorStrata,
useBrightnessPicker,
useSingleFBO,
} from "@/packages/use-shader-fx/src";

function Box(props: any) {
// This reference will give us direct access to the mesh
const meshRef = useRef<THREE.Mesh>();
// Set up state for the hovered and active state
const [hovered, setHover] = useState(false);
const [active, setActive] = useState(false);
// Subscribe this component to the render-loop, rotate the mesh every frame
useFrame((state, delta) => {
meshRef.current!.rotation.x += delta;
meshRef.current!.rotation.y -= delta;
});
// Return view, these are regular three.js elements expressed in JSX
return (
<mesh
{...props}
ref={meshRef}
scale={active ? 2 : 1.5}
onClick={(event) => setActive(!active)}
onPointerOver={(event) => setHover(true)}
onPointerOut={(event) => setHover(false)}>
<boxGeometry args={[1, 1, 1]} />
<meshStandardMaterial color={hovered ? "hotpink" : "orange"} />
</mesh>
);
}

export const Home = () => {
const ref = useRef<THREE.ShaderMaterial>(null);
const { size, dpr } = useThree((state) => {
return { size: state.size, dpr: state.viewport.dpr };
});
const { size, viewport, camera } = useThree();
const dpr = viewport.dpr;
const [updateNoise, setNoise] = useNoise({ size, dpr });
const [updateFluid, setFluid] = useFluid({ size, dpr });
const [updateFxBlending, setFxBlending] = useFxBlending({ size, dpr });
Expand Down Expand Up @@ -54,6 +80,20 @@ export const Home = () => {
noiseStrength: new THREE.Vector2(1, 1),
});

// This scene is rendered offscreen
const offscreenScene = useMemo(() => new THREE.Scene(), []);
const offscreenMesh = useRef<THREE.Mesh>(null);
// create FBO for offscreen rendering
const [_, updateRenderTarget] = useSingleFBO({
scene: offscreenScene,
camera,
size,
dpr: viewport.dpr,
});
useEffect(() => {
offscreenScene.add(offscreenMesh.current!);
}, [offscreenScene]);

useFrame((props) => {
const noise = updateNoise(props);
const fluid = updateFluid(props);
Expand All @@ -69,34 +109,184 @@ export const Home = () => {
noise: noise,
});
ref.current!.uniforms.u_fx.value = colorStrata;
ref.current!.uniforms.u_texture.value = updateRenderTarget(props.gl);
});

return (
<mesh>
<planeGeometry args={[2, 2]} />
<shaderMaterial
ref={ref}
vertexShader={`
<>
<mesh ref={offscreenMesh}>
<ambientLight intensity={Math.PI} />
<spotLight
position={[10, 10, 10]}
angle={0.15}
penumbra={1}
decay={0}
intensity={Math.PI}
/>
<pointLight
position={[-10, -10, -10]}
decay={0}
intensity={Math.PI}
/>
<Box position={[-1.5, 0, 0]} />
<Box position={[1.5, 0, 0]} />
</mesh>
<mesh>
<planeGeometry args={[2, 2]} />
<shaderMaterial
ref={ref}
transparent
vertexShader={`
varying vec2 vUv;
void main() {
vUv = uv;
gl_Position = vec4(position, 1.0);
}
`}
fragmentShader={`
fragmentShader={`
precision highp float;
varying vec2 vUv;
uniform sampler2D u_fx;
uniform sampler2D u_texture;

void main() {
vec2 uv = vUv;
gl_FragColor = texture2D(u_fx, uv);
vec3 noiseMap = texture2D(u_fx, uv).rgb;
vec3 nNoiseMap = noiseMap * 2.0 - 1.0;
uv = uv * 2.0 - 1.0;
uv *= mix(vec2(1.0), abs(nNoiseMap.rg), 1.);
uv = (uv + 1.0) / 2.0;

vec3 texColor = texture2D(u_texture, uv).rgb;
vec3 color = mix(texColor,noiseMap,0.5);

float luminance = length(color);

float edge0 = 0.0;
float edge1 = .2;
float alpha = smoothstep(edge0, edge1, luminance);

gl_FragColor = vec4(color,alpha);

}
`}
uniforms={{
u_fx: { value: null },
}}
/>
</mesh>
uniforms={{
u_texture: { value: null },
u_fx: { value: null },
}}
/>
</mesh>
</>
);
};

// import * as THREE from "three";
// import { useEffect, useMemo, useRef, useState } from "react";
// import { useFrame, useThree } from "@react-three/fiber";
// import { useNoise, useSingleFBO } from "@/packages/use-shader-fx/src";

// function Box(props: any) {
// // This reference will give us direct access to the mesh
// const meshRef = useRef<THREE.Mesh>();
// // Set up state for the hovered and active state
// const [hovered, setHover] = useState(false);
// const [active, setActive] = useState(false);
// // Subscribe this component to the render-loop, rotate the mesh every frame
// useFrame((state, delta) => (meshRef.current!.rotation.x += delta));
// // Return view, these are regular three.js elements expressed in JSX
// return (
// <mesh
// {...props}
// ref={meshRef}
// scale={active ? 1.5 : 1}
// onClick={(event) => setActive(!active)}
// onPointerOver={(event) => setHover(true)}
// onPointerOut={(event) => setHover(false)}>
// <boxGeometry args={[1, 1, 1]} />
// <meshStandardMaterial color={hovered ? "hotpink" : "orange"} />
// </mesh>
// );
// }

// export const Home = () => {
// const { size, viewport, camera, gl } = useThree();

// // This scene is rendered offscreen
// const offscreenScene = useMemo(() => new THREE.Scene(), []);
// const offscreenMesh = useRef<THREE.Mesh>(null);
// // create FBO for offscreen rendering
// const [_, updateRenderTarget] = useSingleFBO({
// scene: offscreenScene,
// camera,
// size,
// dpr: viewport.dpr,
// });
// useEffect(() => {
// offscreenScene.add(offscreenMesh.current!);
// }, [offscreenScene]);

// // generate noise
// const shaderMaterial = useRef<THREE.ShaderMaterial>(null);
// const [updateNoise] = useNoise({ size, dpr: viewport.dpr });

// useFrame((props) => {
// shaderMaterial.current!.uniforms.u_fx.value = updateNoise(props);
// shaderMaterial.current!.uniforms.u_texture.value = updateRenderTarget(gl);
// });

// return (
// <>
// <mesh ref={offscreenMesh}>
// <ambientLight intensity={Math.PI / 2} />
// <spotLight
// position={[10, 10, 10]}
// angle={0.15}
// penumbra={1}
// decay={0}
// intensity={Math.PI}
// />
// <pointLight
// position={[-10, -10, -10]}
// decay={0}
// intensity={Math.PI}
// />
// <Box position={[-1.2, 0, 0]} />
// <Box position={[1.2, 0, 0]} />
// </mesh>
// <mesh>
// <planeGeometry args={[2, 2]} />
// <shaderMaterial
// ref={shaderMaterial}
// transparent
// vertexShader={`
// varying vec2 vUv;
// void main() {
// vUv = uv;
// gl_Position = vec4(position, 1.0);
// }
// `}
// fragmentShader={`
// precision highp float;
// varying vec2 vUv;
// uniform sampler2D u_fx;
// uniform sampler2D u_texture;

// void main() {
// vec2 uv = vUv;
// vec3 noiseMap = texture2D(u_fx, uv).rgb;
// vec3 nNoiseMap = noiseMap * 2.0 - 1.0;
// uv = uv * 2.0 - 1.0;
// uv *= mix(vec2(1.0), abs(nNoiseMap.rg), .6);
// uv = (uv + 1.0) / 2.0;
// gl_FragColor = texture2D(u_texture, uv);
// }
// `}
// uniforms={{
// u_texture: { value: null },
// u_fx: { value: null },
// }}
// />
// </mesh>
// </>
// );
// };