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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 ) {
if ( renderer.getRenderTarget() === null ) {
// https://github.com/mrdoob/three.js/pull/23937#issuecomment-1111067398
return renderer.outputColorSpace;
}
return ColorManagement.workingColorSpace;
}
// Legacy
const UniformsUtils = { clone: cloneUniforms, merge: mergeUniforms };
export { UniformsUtils };