| import { CubeReflectionMapping, CubeRefractionMapping, EquirectangularReflectionMapping, EquirectangularRefractionMapping } from '../../constants.js'; |
| import { WebGLCubeRenderTarget } from '../WebGLCubeRenderTarget.js'; |
|
|
| function WebGLCubeMaps( renderer ) { |
|
|
| let cubemaps = new WeakMap(); |
|
|
| function mapTextureMapping( texture, mapping ) { |
|
|
| if ( mapping === EquirectangularReflectionMapping ) { |
|
|
| texture.mapping = CubeReflectionMapping; |
|
|
| } else if ( mapping === EquirectangularRefractionMapping ) { |
|
|
| texture.mapping = CubeRefractionMapping; |
|
|
| } |
|
|
| return texture; |
|
|
| } |
|
|
| function get( texture ) { |
|
|
| if ( texture && texture.isTexture ) { |
|
|
| const mapping = texture.mapping; |
|
|
| if ( mapping === EquirectangularReflectionMapping || mapping === EquirectangularRefractionMapping ) { |
|
|
| if ( cubemaps.has( texture ) ) { |
|
|
| const cubemap = cubemaps.get( texture ).texture; |
| return mapTextureMapping( cubemap, texture.mapping ); |
|
|
| } else { |
|
|
| const image = texture.image; |
|
|
| if ( image && image.height > 0 ) { |
|
|
| const renderTarget = new WebGLCubeRenderTarget( image.height / 2 ); |
| renderTarget.fromEquirectangularTexture( renderer, texture ); |
| cubemaps.set( texture, renderTarget ); |
|
|
| texture.addEventListener( 'dispose', onTextureDispose ); |
|
|
| return mapTextureMapping( renderTarget.texture, texture.mapping ); |
|
|
| } else { |
|
|
| |
|
|
| return null; |
|
|
| } |
|
|
| } |
|
|
| } |
|
|
| } |
|
|
| return texture; |
|
|
| } |
|
|
| function onTextureDispose( event ) { |
|
|
| const texture = event.target; |
|
|
| texture.removeEventListener( 'dispose', onTextureDispose ); |
|
|
| const cubemap = cubemaps.get( texture ); |
|
|
| if ( cubemap !== undefined ) { |
|
|
| cubemaps.delete( texture ); |
| cubemap.dispose(); |
|
|
| } |
|
|
| } |
|
|
| function dispose() { |
|
|
| cubemaps = new WeakMap(); |
|
|
| } |
|
|
| return { |
| get: get, |
| dispose: dispose |
| }; |
|
|
| } |
|
|
| export { WebGLCubeMaps }; |
|
|
