Display image in ShaderToy

Today I Learned May 12, 2022

void mainImage ( out vec4 fragColor, in vec2 fragCoord )
{

    vec2 xy = fragCoord.xy / iResolution.xy; // Condensing this into oneline
     vec4 textColor = texture(iChannel0,xy); // get the pixel at the xy from iCahnnel0
    fragColor = textColor; // set the screen pixel to that color
}

Flash RBG over time

void mainImage ( out vec4 fragColor, in vec2 fragCoord )
{

    vec2 xy = fragCoord.xy / iResolution.xy; // Condensing this into oneline
     vec4 textColor = texture(iChannel0,xy); // get the pixel at the xy from iCahnnel0
    textColor.r *= abs(sin(iTime));
    textColor.g *= abs(cos(iTime));
    textColor.b  *= abs(sin(iTime) * cos(iTime));
    fragColor = textColor; // set the screen pixel to that color
}