@openhps/core/dist/esm/three/renderers/shaders/UniformsUtils.js

Open Hybrid Positioning System - Core component

import { ColorManagement } from '../../math/ColorManagement.js';

// Uniform Utilities

export function cloneUniforms(src) {
  const dst = {};
  for (const u in src) {
    dst[u] = {};
    for (const p in src[u]) {
      const property = src[u][p];
      if (property && (property.isColor || property.isMatrix3 || property.isMatrix4 || property.isVector2 || property.isVector3 || property.isVector4 || property.isTexture || property.isQuaternion)) {
        if (property.isRenderTargetTexture) {
          console.warn('UniformsUtils: Textures of render targets cannot be cloned via cloneUniforms() or mergeUniforms().');
          dst[u][p] = null;
        } else {
          dst[u][p] = property.clone();
        }
      } else if (Array.isArray(property)) {
        dst[u][p] = property.slice();
      } else {
        dst[u][p] = property;
      }
    }
  }
  return dst;
}
export function mergeUniforms(uniforms) {
  const merged = {};
  for (let u = 0; u < uniforms.length; u++) {
    const tmp = cloneUniforms(uniforms[u]);
    for (const p in tmp) {
      merged[p] = tmp[p];
    }
  }
  return merged;
}
export function cloneUniformsGroups(src) {
  const dst = [];
  for (let u = 0; u < src.length; u++) {
    dst.push(src[u].clone());
  }
  return dst;
}
export function getUnlitUniformColorSpace(renderer) {
  const currentRenderTarget = renderer.getRenderTarget();
  if (currentRenderTarget === null) {
    // https://github.com/mrdoob/three.js/pull/23937#issuecomment-1111067398
    return renderer.outputColorSpace;
  }

  // https://github.com/mrdoob/three.js/issues/27868
  if (currentRenderTarget.isXRRenderTarget === true) {
    return currentRenderTarget.texture.colorSpace;
  }
  return ColorManagement.workingColorSpace;
}

// Legacy

const UniformsUtils = {
  clone: cloneUniforms,
  merge: mergeUniforms
};
export { UniformsUtils };