Accueil / npm / three@0.186.1 / src / textures / CompressedArrayTexture.js
CompressedArrayTexture.js
import { ClampToEdgeWrapping } from '../constants.js';
import { CompressedTexture } from './CompressedTexture.js';
/**
* Creates a texture 2D array based on data in compressed form.
*
* These texture are usually loaded with {@link CompressedTextureLoader}.
*
* @augments CompressedTexture
*/
class CompressedArrayTexture extends CompressedTexture {
/**
* Constructs a new compressed array texture.
*
* @param {Array<Object>} mipmaps - This array holds for all mipmaps (including the bases mip)
* the data and dimensions.
* @param {number} width - The width of the texture.
* @param {number} height - The height of the texture.
* @param {number} depth - The depth of the texture.
* @param {number} [format=RGBAFormat] - The min filter value.
* @param {number} [type=UnsignedByteType] - The min filter value.
*/
constructor( mipmaps, width, height, depth, format, type ) {
super( mipmaps, width, height, format, type );
/**
* This flag can be used for type testing.
*
* @type {boolean}
* @readonly
* @default true
*/
this.isCompressedArrayTexture = true;
/**
* The image property of a compressed texture just defines its dimensions.
*
* @name CompressedArrayTexture#image
* @type {{width:number,height:number,depth:number}}
*/
this.image.depth = depth;
/**
* This defines how the texture is wrapped in the depth and corresponds to
* *W* in UVW mapping.
*
* @type {(RepeatWrapping|ClampToEdgeWrapping|MirroredRepeatWrapping)}
* @default ClampToEdgeWrapping
*/
this.wrapR = ClampToEdgeWrapping;
/**
* A set of all layers which need to be updated in the texture.
*
* @type {Set<number>}
*/
this.layerUpdates = new Set();
}
/**
* Copies the values of the given texture to this instance.
*
* @param {CompressedArrayTexture} source - The texture to copy.
* @return {CompressedArrayTexture} A reference to this instance.
*/
copy( source ) {
super.copy( source );
this.wrapR = source.wrapR;
return this;
}
/**
* Describes that a specific layer of the texture needs to be updated.
* Normally when {@link Texture#needsUpdate} is set to `true`, the
* entire compressed texture array is sent to the GPU. Marking specific
* layers will only transmit subsets of all mipmaps associated with a
* specific depth in the array which is often much more performant.
*
* @param {number} layerIndex - The layer index that should be updated.
*/
addLayerUpdate( layerIndex ) {
this.layerUpdates.add( layerIndex );
}
/**
* Resets the layer updates registry.
*/
clearLayerUpdates() {
this.layerUpdates.clear();
}
}
export { CompressedArrayTexture };