@petkoneo/phaser3-rex-plugins/plugins/shaders/utils/drawer/alpha/alpha-postfxfrag.js

Plugins of phaser3

const frag = `\
#ifdef GL_FRAGMENT_PRECISION_HIGH
#define highmedp highp
#else
#define highmedp mediump
#endif
precision highmedp float;

// Scene buffer
uniform sampler2D uMainSampler; 
varying vec2 outTexCoord;

// Effect parameters
uniform float alpha;

void main (void) {
  gl_FragColor = texture2D(uMainSampler, outTexCoord) * alpha;
}
`;

export default frag;