pixijs v7 shader

[tywang2006]

createFogEffect() {

const fragmentShader = `

precision mediump float;

uniform float time;

void main(void) {

float fogIntensity = clamp(0.5 + time, 0.0, 1.0);

gl_FragColor = vec4(fogIntensity, fogIntensity, fogIntensity, 1.0);

}

`;

this.fogFilter = new PIXI.Filter(null, fragmentShader, {

time: { type: '1f', value: 0.0 }

}, { legacy: true });

this.fogFilter.uniforms.time.value = 0.1;

this.effect.sprite.filters = [this.fogFilter];

}  first time to do shader in v7, but it seems incorrect, uniforms just been ignored, if i do gl_FragColor = vec4(0.5,0.5,0.5,1.0) or just use some fixed value instad of time, the shader is working

[tywang2006]

i also remove { legacy: true }, same issue