#version 300 es

precision highp float;
precision highp int;
precision highp sampler2D;

uniform vec3      iResolution;                  // viewport resolution (in pixels)
uniform float     iTime;                        // shader playback time (in seconds)
uniform float     iGlobalTime;                  // shader playback time (in seconds)
uniform vec4      iMouse;                       // mouse pixel coords
uniform vec4      iDate;                        // (year, month, day, time in seconds)
uniform float     iSampleRate;                  // sound sample rate (i.e., 44100)
uniform vec3      iChannelResolution[4];        // channel resolution (in pixels)
uniform float     iChannelTime[4];              // channel playback time (in sec)

uniform vec2      ifFragCoordOffsetUniform;     // used for tiled based hq rendering
uniform float     iTimeDelta;                   // render time (in seconds)
uniform int       iFrame;                       // shader playback frame
uniform float     iFrameRate;

struct Channel {
    vec3    resolution;
    float   time;
};

uniform Channel iChannel[4];