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39 lines
873 B
GLSL
39 lines
873 B
GLSL
#version 150
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uniform UBO
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{
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mat4 MVP;
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vec2 OutputSize;
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float time;
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} global;
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layout(location = 0) in vec2 VertexCoord;
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float iqhash(float n)
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{
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return fract(sin(n) * 43758.5453);
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}
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float noise(vec3 x)
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{
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vec3 p = floor(x);
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vec3 f = fract(x);
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f = f * f * (3.0 - 2.0 * f);
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float n = p.x + p.y * 57.0 + 113.0 * p.z;
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return mix(mix(mix(iqhash(n), iqhash(n + 1.0), f.x),
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mix(iqhash(n + 57.0), iqhash(n + 58.0), f.x), f.y),
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mix(mix(iqhash(n + 113.0), iqhash(n + 114.0), f.x),
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mix(iqhash(n + 170.0), iqhash(n + 171.0), f.x), f.y), f.z);
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}
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void main()
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{
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vec3 v = vec3(VertexCoord.x, 0.0, VertexCoord.y);
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vec3 v2 = v;
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v2.x = v2.x + global.time / 2.0;
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v2.z = v.z * 3.0;
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v.y = cos((v.x + v.z / 3.0 + global.time) * 2.0) / 10.0 + noise(v2.xyz) / 4.0;
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v.y = -v.y;
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gl_Position = vec4(v, 1.0);
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}
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