Water effect with GLSL

water.glsl

#version 300 es

precision highp float;
precision highp sampler2D;

in vec2 uv;
out vec4 out_color;

uniform vec2 u_resolution;
uniform float u_time;
uniform vec4 u_mouse;
uniform sampler2D u_textures[16];

void main(){
    float strength = 0.04; 
    float zoom = 5.0; 
    float scrollSpeed = 0.1; 

    vec4 noise_col = texture(u_textures[1], (uv / zoom) + (u_time * scrollSpeed)); 
    vec4 output_col = texture(u_textures[0], uv + (noise_col.rr * strength)); 

    out_color = output_col; 
}