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| ## TextureView | ||
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| A `TextureView` is a view onto some subset of the texture subresources defined by a particular `Texture`. | ||
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| ### Subresource Selection | ||
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| The set of texture subresources of a texture view view, is the subset of the subresources | ||
| of the associated `Texture` for which each subresource satisfies the following: | ||
| - The mipmap level of s is ≥ props.baseMipLevel and < props.baseMipLevel + props.mipLevelCount. | ||
| - The array layer of s is ≥ props.baseArrayLayer and < props.baseArrayLayer + props.arrayLayerCount. | ||
| - The aspect of s is in the set of aspects of props.aspect. | ||
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| ### Render Extent | ||
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| There is an implicit "render extent" associated with a renderable `TextureView`. | ||
| This render extent depends on the baseMipLevel. | ||
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| ### TextureView Aliasing | ||
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| Two `TextureView` objects are texture-view-aliasing if and only if their sets of subresources intersect. | ||
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| ## Usage | ||
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| ```ts | ||
| const texture = device.createTexture({...}); | ||
| const textureView = texture.createView({...}); | ||
| ``` | ||
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| ## Types | ||
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| ### TextureViewProps | ||
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| ## Methods | ||
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| ### `constructor` | ||
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| The constructor for `TextureView` should not be called directly. Use `Texture.createView()` instead. |
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| // luma.gl, MIT license | ||
| // Copyright (c) vis.gl contributors | ||
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| import type {Device} from '../device'; | ||
| import type {Texture} from './texture'; | ||
| import type {TextureFormat} from '../types/texture-formats'; | ||
| import {Resource, ResourceProps} from './resource'; | ||
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| /** Properties for initializing a texture view */ | ||
| export type TextureViewProps = ResourceProps & { | ||
| /** The format of the texture view. Must be either the format of the texture or one of the viewFormats specified during its creation. */ | ||
| format?: TextureFormat; | ||
| /** The dimension to view the texture as. */ | ||
| dimension?: '1d' | '2d' | '2d-array' | 'cube' | 'cube-array' | '3d'; | ||
| /** Which aspect(s) of the texture are accessible to the texture view. default "all"*/ | ||
| aspect?: 'all' | 'stencil-only' | 'depth-only'; | ||
| /** The first (most detailed) mipmap level accessible to the texture view. default 0*/ | ||
| baseMipLevel?: number; | ||
| /** How many mipmap levels, starting with baseMipLevel, are accessible to the texture view. */ | ||
| mipLevelCount: number; | ||
| /** The index of the first array layer accessible to the texture view. default 0 */ | ||
| baseArrayLayer?: number; | ||
| /** How many array layers, starting with baseArrayLayer, are accessible to the texture view. */ | ||
| arrayLayerCount: number; | ||
| }; | ||
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| /** Immutable TextureView object */ | ||
| export abstract class TextureView extends Resource<TextureViewProps> { | ||
| static override defaultProps: Required<TextureViewProps> = { | ||
| ...Resource.defaultProps, | ||
| format: undefined, | ||
| dimension: undefined, | ||
| aspect: 'all', | ||
| baseMipLevel: 0, | ||
| mipLevelCount: undefined, | ||
| baseArrayLayer: 0, | ||
| arrayLayerCount: undefined | ||
| }; | ||
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| abstract texture: Texture; | ||
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| override get [Symbol.toStringTag](): string { | ||
| return 'TextureView'; | ||
| } | ||
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| /** Should not be constructed directly. Use `texture.createView(props)` */ | ||
| constructor(device: Device, props: TextureViewProps & {texture: Texture}) { | ||
| super(device, props, TextureView.defaultProps); | ||
| } | ||
| } |
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| // luma.gl, MIT license | ||
| // Copyright (c) vis.gl contributors | ||
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| import type {Device, TextureViewProps} from '@luma.gl/core'; | ||
| // import {decodeTextureFormat} from '@luma.gl/core'; | ||
| import {TextureView, Texture} from '@luma.gl/core'; | ||
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| import {WebGLDevice} from '../webgl-device'; | ||
| import {WEBGLTexture} from './webgl-texture'; | ||
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| export class WEBGLTextureView extends TextureView { | ||
| readonly device: WebGLDevice; | ||
| readonly gl: WebGL2RenderingContext; | ||
| readonly handle: WebGLTexture; | ||
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| readonly texture: WEBGLTexture; | ||
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| constructor(device: Device, props: TextureViewProps & {texture: WEBGLTexture}) { | ||
| super(device, {...Texture.defaultProps, ...props}); | ||
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| this.device = device as WebGLDevice; | ||
| this.gl = this.device.gl; | ||
| this.handle = null; | ||
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| this.texture = props.texture; | ||
| } | ||
| } |
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