68 lines
2.3 KiB
GLSL
68 lines
2.3 KiB
GLSL
/*
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* Original shader from: https://www.shadertoy.com/view/4dGfDy
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*/
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#ifdef GL_ES
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precision mediump float;
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#endif
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// glslsandbox uniforms
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uniform float time;
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uniform vec2 resolution;
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// shadertoy globals
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#define iTime time
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#define iResolution resolution
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// --------[ Original ShaderToy begins here ]---------- //
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float circle(vec2 uv, vec2 position, float radius, float blur) {
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uv -=0.5; // position of the circle || to make (0,0) center of the screen
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uv.y*=iResolution.y/iResolution.x; //to make it a circle
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float d = length(uv-position);
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float c = smoothstep(radius,radius-blur,d); //if(d<radius){d=1} else{d=0} and also adds blur on the edges
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return c;
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}
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float oval(vec2 uv, vec2 position, float radius, float blur) {
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uv -=0.5; // position of the circle || to make (0,0) center of the screen
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float d = length(uv-position);
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float c = smoothstep(radius,radius-blur,d); //if(d<radius){d=1} else{d=0} and also adds blur on the edges
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return c;
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}
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float verticalOval(vec2 uv, vec2 position, float radius, float blur, float thickness) {
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uv -=0.5;
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uv.x*= uv.y+thickness;
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uv.y*=iResolution.y/iResolution.x; // position of the circle || to make (0,0) center of the screen
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float d = length(uv-position);
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float c = smoothstep(radius,radius-blur,d); //if(d<radius){d=1} else{d=0} and also adds blur on the edges
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return c;
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}
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void mainImage( out vec4 fragColor, in vec2 fragCoord )
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{
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vec2 uv = fragCoord/iResolution.xy;
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float c = circle(uv,vec2(0.),.1,.003);
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float c2 = circle(uv,vec2(.1),.06,.003);
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float c3 = circle(uv,vec2(-.1,.1),.06,.003);
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float c4 = oval(uv,vec2(0.,-.08),.04,.005);
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float c5 = oval(uv,vec2(0.025,-0.06),.04,.05);
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float c6 = verticalOval(uv,vec2(-0.1,.025),.04,.005,2.5);
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float c7 = verticalOval(uv,vec2(0.1,.025),.04,.005,2.5);
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float c8 = oval(uv,vec2(-0.05,0.07),.015,0.006);
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float c9 = oval(uv,vec2(0.03,0.07),.015,.006);
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vec3 col = 0.5 + 0.5*cos(iTime+uv.xyx+vec3(0,2,4));
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vec3 sumAppear = vec3 (c+c2+c3+c5+c8+c9-c6-c7-c4);
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vec3 makeAppear = col * sumAppear ;
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fragColor = vec4(makeAppear,1.0);
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}
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// --------[ Original ShaderToy ends here ]---------- //
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void main(void)
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{
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mainImage(gl_FragColor, gl_FragCoord.xy);
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}
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