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ed1cd94448
...it kind of snowballed from some needs Fixes #521 - If `tactic` is not set, check precision allowed from WebGL, and automatically change based off needs, otherwise use value from `tactic`. Fixes #535 - Internally check if texture from argument is the same as output, if so, clone this texture, and then clean it up after the kernel runs. Fixes #536 - Normalize all declarations to non-destructured, and then parse Fixes #537 - Change logic Fixes #538 - Found the GL script that would work, and reduced the methods to use it Fixes #539 - Found a better way of testing random, and this gives me an error for 1 in 10 runs, acceptable Some refactoring for less duplicate code and documentation
50 lines
1.1 KiB
JavaScript
50 lines
1.1 KiB
JavaScript
// language=GLSL
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const source = `// https://www.shadertoy.com/view/4t2SDh
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//note: uniformly distributed, normalized rand, [0,1]
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highp float randomSeedShift = 1.0;
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highp float slide = 1.0;
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uniform highp float randomSeed1;
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uniform highp float randomSeed2;
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highp float nrand(highp vec2 n) {
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highp float result = fract(sin(dot((n.xy + 1.0) * vec2(randomSeed1 * slide, randomSeed2 * randomSeedShift), vec2(12.9898, 78.233))) * 43758.5453);
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randomSeedShift = result;
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if (randomSeedShift > 0.5) {
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slide += 0.00009;
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} else {
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slide += 0.0009;
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}
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return result;
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}`;
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const name = 'math-random-uniformly-distributed';
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// language=JavaScript
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const functionMatch = `Math.random()`;
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const functionReplace = `nrand(vTexCoord)`;
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const functionReturnType = 'Number';
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/**
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*
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* @param {Kernel} kernel
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*/
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const onBeforeRun = (kernel) => {
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kernel.setUniform1f('randomSeed1', Math.random());
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kernel.setUniform1f('randomSeed2', 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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const plugin = {
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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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};
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module.exports = plugin; |