为什么gl-react无法在react-native中工作?

时间:2019-01-29 13:15:09

标签: react-native

我正在尝试在react-native(0.58.3)中使用https://github.com/gre/gl-react-native和react-native-webgl,但是它不起作用,它显示出这样的错误

“[TID:com.facebook.react.JavaScript]异常 ' - [RCTCxxBridge jsContextRef]:发送到实例0x166d5740无法识别选择' 是从JS螺纹抛出”

这是我的代码

import { Shaders, Node, GLSL , GL} from 'gl-react'
import {Surface} from 'gl-react-native';
import GLImage from "gl-react-image";
import { WebGLView } from "react-native-webgl";

const shaders = Shaders.create({
  Saturate: {
    frag: GLSL`
  precision highp float;
  varying vec2 uv;
  uniform sampler2D t;
  uniform float contrast, saturation, brightness;
  const vec3 L = vec3(0.2125, 0.7154, 0.0721);
  void main() {
    vec4 c = texture2D(t, uv);
    vec3 brt = c.rgb * brightness;
    gl_FragColor = vec4(mix(
      vec3(0.5),
      mix(vec3(dot(brt, L)), brt, saturation),
      contrast), c.a);
  }
  `
  }
});

    export const Saturate = ({ contrast, saturation, brightness, children }) =>
  <Node
    shader={shaders.Saturate}
    uniforms={{ contrast, saturation, brightness, t: children }}
  />;



render() {
    const filter = {
      contrast: 1,
    saturation: 1,
    brightness: 1
    }

    return (
     <Surface style={{ width: 500, height: 500, backgroundColor: "green" }}>
          <Saturate {...filter}>
            {{ uri: "https://i.imgur.com/uTP9Xfr.jpg" }}
          </Saturate>
        </Surface>
    );
  }

谢谢!

0 个答案:

没有答案
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