typegpu/core/pipeline/connectAttachmentToShader.js

A thin layer between JS and WebGPU/WGSL that improves development experience and allows for faster iteration.

import { isBuiltin } from "../../data/attributes.js";
import { isVoid, isWgslStruct } from "../../data/wgslTypes.js";
function isColorAttachment(value) {
    return !!value?.view;
}
export function connectAttachmentToShader(fragmentOut, attachment) {
    if (isVoid(fragmentOut) || isBuiltin(fragmentOut)) {
        return [];
    }
    if (isWgslStruct(fragmentOut)) {
        const result = [];
        for (const key of Object.keys(fragmentOut.propTypes)) {
            const outputValue = fragmentOut.propTypes[key];
            if (isBuiltin(outputValue)) {
                continue;
            }
            const matching = attachment[key];
            if (!matching) {
                throw new Error(`A color attachment by the name of '${key}' was not provided to the shader.`);
            }
            result.push(matching);
        }
        return result;
    }
    if (!isColorAttachment(attachment)) {
        throw new Error('Expected a single color attachment, not a record.');
    }
    return [attachment];
}