28 lines
591 B
Forth
28 lines
591 B
Forth
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//
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void mainImage( out vec4 fragColor, in vec2 fragCoord )
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{
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float time=iGlobalTime*1.0;
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vec2 uv = (fragCoord.xy / iResolution.xx-0.5)*8.0;
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vec2 uv0=uv;
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float i0=1.0;
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float i1=1.0;
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float i2=1.0;
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float i4=0.0;
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for(int s=0;s<7;s++)
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{
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vec2 r;
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r=vec2(cos(uv.y*i0-i4+time/i1),sin(uv.x*i0-i4+time/i1))/i2;
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r+=vec2(-r.y,r.x)*0.3;
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uv.xy+=r;
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i0*=1.93;
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i1*=1.15;
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i2*=1.7;
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i4+=0.05+0.1*time*i1;
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}
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float r=sin(uv.x-time)*0.5+0.5;
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float b=sin(uv.y+time)*0.5+0.5;
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float g=sin((uv.x+uv.y+sin(time*0.5))*0.5)*0.5+0.5;
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fragColor = vec4(r,g,b,1.0);
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}
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