洪水淹没-样式修改，删除tip；选择河段时弹框关闭

guoshilong

2023-02-21 8a6a1f340e249ca4e253f52a99a46ef44e7f0f00

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uniform sampler2D colorTexture;
uniform float brightness;
 
varying vec2 v_textureCoordinates;
 
void main(void)
{
    vec3 rgb = texture2D(colorTexture, v_textureCoordinates).rgb;
    vec3 target = vec3(0.0);
    gl_FragColor = vec4(mix(target, rgb, brightness), 1.0);
}