solsarratea · July 3, 2021 14:47
diff --git a/dct.frag b/dct.frag
 // Copy following code at: https://thebookofshaders.com/edit.php

 // Author: sol sarratea
 // Title: DCT exploration

 #ifdef GL_ES
 precision mediump float;
 #endif

 uniform vec2 u_resolution;
 uniform vec2 u_mouse;
 uniform float u_time;

 void main() {
    vec2 p = gl_FragCoord.xy/u_resolution.xy*2.-1.;
    p.x *= u_resolution.x/u_resolution.y;
    vec3 color;
    
    // Horizontal frequencies 
    // color += cos(p.x*mix(0.,8.,-0.936))*1.;
    
    // Vertical frequencies 
    // color += cos(p.y*mix(0.,8.,0.))*1.;
    
    // Mixing cosine waves
    //color += mix(cos(p.x*0.+u_time),cos(p.y*10.+u_time),0.5);
  
    gl_FragColor = vec4(color,1.0);
 }
	// Copy following code at: https://thebookofshaders.com/edit.php

	// Author: sol sarratea
	// Title: DCT exploration

	#ifdef GL_ES
	precision mediump float;
	#endif

	uniform vec2 u_resolution;
	uniform vec2 u_mouse;
	uniform float u_time;

	void main() {
	vec2 p = gl_FragCoord.xy/u_resolution.xy*2.-1.;
	p.x *= u_resolution.x/u_resolution.y;
	vec3 color;

	// Horizontal frequencies
	// color += cos(p.xmix(0.,8.,-0.936))1.;

	// Vertical frequencies
	// color += cos(p.ymix(0.,8.,0.))1.;

	// Mixing cosine waves
	//color += mix(cos(p.x0.+u_time),cos(p.y10.+u_time),0.5);

	gl_FragColor = vec4(color,1.0);
	}