mirror of
https://github.com/gpujs/gpu.js.git
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2b45882c58
feat: Consolidate subKernels rendering code as part of the renderStrategy fix: remove tabs, replace with spaces fix: make FunctionBuilder.fromKernel typing static fix: Add missing FunctionBuilder.getPrototypeString definition fix: Move building logic to kernelRunShortcut as well as exec method
53 lines
1.2 KiB
JavaScript
53 lines
1.2 KiB
JavaScript
const source = `
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uniform highp float triangle_noise_seed;
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highp float triangle_noise_shift = 0.000001;
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//https://www.shadertoy.com/view/4t2SDh
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//note: uniformly distributed, normalized rand, [0;1[
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float nrand( vec2 n )
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{
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return fract(sin(dot(n.xy, vec2(12.9898, 78.233)))* 43758.5453);
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}
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//note: remaps v to [0;1] in interval [a;b]
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float remap( float a, float b, float v )
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{
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return clamp( (v-a) / (b-a), 0.0, 1.0 );
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}
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float n4rand( vec2 n )
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{
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float t = fract( triangle_noise_seed + triangle_noise_shift );
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float nrnd0 = nrand( n + 0.07*t );
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float nrnd1 = nrand( n + 0.11*t );
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float nrnd2 = nrand( n + 0.13*t );
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float nrnd3 = nrand( n + 0.17*t );
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float result = (nrnd0+nrnd1+nrnd2+nrnd3) / 4.0;
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triangle_noise_shift = result + 0.000001;
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return result;
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}`;
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const name = 'triangle-noise-noise';
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const functionMatch = 'Math.random()';
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const functionReplace = 'n4rand(vTexCoord)';
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const functionReturnType = 'Number';
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const onBeforeRun = (kernel) => {
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kernel.setUniform1f('triangle_noise_seed', Math.random());
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};
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/**
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*
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* @type IPlugin
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*/
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module.exports = {
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name,
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onBeforeRun,
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functionMatch,
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functionReplace,
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functionReturnType,
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source
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}; |