gpu-curtains/dist/esm/core/textures/utils.mjs

gpu-curtains is a 3D WebGPU rendering engine. It can be used as a standalone 3D engine, but also includes extra classes focused on mapping 3d objects to DOM elements; It allows users to synchronize values such as position, sizing, or scale between them.

import { WebGPUTextureUsageConstants } from '../../utils/webgpu-constants.mjs';

const textureUsages = /* @__PURE__ */ new Map([
  ["copySrc", WebGPUTextureUsageConstants.COPY_SRC],
  ["copyDst", WebGPUTextureUsageConstants.COPY_DST],
  ["renderAttachment", WebGPUTextureUsageConstants.RENDER_ATTACHMENT],
  ["storageBinding", WebGPUTextureUsageConstants.STORAGE_BINDING],
  ["textureBinding", WebGPUTextureUsageConstants.TEXTURE_BINDING]
]);
const getTextureUsages = (usages = []) => {
  return usages.reduce((acc, v) => {
    return acc | textureUsages.get(v);
  }, 0);
};
const getDefaultTextureUsage = (usages = [], textureType) => {
  if (usages.length) {
    return getTextureUsages(usages);
  }
  return textureType !== "storage" ? GPUTextureUsage.TEXTURE_BINDING | GPUTextureUsage.COPY_SRC | GPUTextureUsage.COPY_DST | GPUTextureUsage.RENDER_ATTACHMENT : GPUTextureUsage.STORAGE_BINDING | GPUTextureUsage.TEXTURE_BINDING | GPUTextureUsage.COPY_DST;
};
const getDefaultMediaTextureUsage = (usages = []) => {
  return getDefaultTextureUsage(usages, "texture");
};
const getNumMipLevels = (...sizes) => {
  const maxSize = Math.max(...sizes);
  return 1 + Math.log2(maxSize) | 0;
};

export { getDefaultMediaTextureUsage, getDefaultTextureUsage, getNumMipLevels, getTextureUsages };