32 lines
1.0 KiB
JavaScript
32 lines
1.0 KiB
JavaScript
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import { loadImage, loadText, makePassFBO, makePass } from "./utils.js";
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// Multiplies the rendered rain and bloom by a loaded in image
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const defaultBGURL = "https://upload.wikimedia.org/wikipedia/commons/thumb/0/0a/Flammarion_Colored.jpg/917px-Flammarion_Colored.jpg";
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export default ({ regl, config }, inputs) => {
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const output = makePassFBO(regl, config.useHalfFloat);
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const bgURL = "bgURL" in config ? config.bgURL : defaultBGURL;
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const bloomStrength = config.bloomStrength;
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const background = loadImage(regl, bgURL);
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const imagePassFrag = loadText("shaders/glsl/imagePass.frag.glsl");
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const render = regl({
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frag: regl.prop("frag"),
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uniforms: {
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bloomStrength,
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backgroundTex: background.texture,
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tex: inputs.primary,
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bloomTex: inputs.bloom,
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},
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framebuffer: output,
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});
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return makePass(
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{
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primary: output,
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},
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Promise.all([background.loaded, imagePassFrag.loaded]),
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(w, h) => output.resize(w, h),
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() => render({ frag: imagePassFrag.text() })
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);
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};
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