axis = vec3( vOutputDirection.z, 0.0, - vOutputDirection.x ); } axis = normalize( axis ); gl_FragColor = vec4( 0.0, 0.0, 0.0, 1.0 ); gl_FragColor.rgb += weights[ 0 ] * getSample( 0.0, axis ); for ( int i = 1; i < n; i++ ) { if ( i >= samples ) { break; } float theta = dTheta * float( i ); gl_FragColor.rgb += weights[ i ] * getSample( -1.0 * theta, axis ); gl_FragColor.rgb += weights[ i ] * getSample( theta, axis ); } } `,blending:ba,depthTest:!1,depthWrite:!1})}function YE(){return new Zi({name:"EquirectangularToCubeUV",uniforms:{envMap:{value:null}},vertexShader:KU(),fragmentShader:` precision mediump float; precision mediump int; varying vec3 vOutputDirection; uniform sampler2D envMap; #include void main() { vec3 outputDirection = normalize( vOutputDirection ); vec2 uv = equirectUv( outputDirection ); gl_FragColor = vec4( texture2D ( envMap, uv ).rgb, 1.0 ); } `,blending:ba,depthTest:!1,depthWrite:!1})}function QE(){return new Zi({name:"CubemapToCubeUV",uniforms:{envMap:{value:null},flipEnvMap:{value:-1}},vertexShader:KU(),fragmentShader:` precision mediump float; precision mediump int; uniform float flipEnvMap; varying vec3 vOutputDirection; uniform samplerCube envMap; void main() { gl_FragColor = textureCube( envMap, vec3( flipEnvMap * vOutputDirection.x, vOutputDirection.yz ) ); } `,blending:ba,depthTest:!1,depthWrite:!1})}function KU(){return` precision mediump float; precision mediump int; attribute float faceIndex; varying vec3 vOutputDirection; // RH coordinate system; PMREM face-indexing convention vec3 getDirection( vec2 uv, float face ) { uv = 2.0 * uv - 1.0; vec3 direction = vec3( uv, 1.0 ); if ( face == 0.0 ) { direction = direction.zyx; // ( 1, v, u ) pos x } else if ( face == 1.0 ) { direction = direction.xzy; direction.xz *= -1.0; // ( -u, 1, -v ) pos y } else if ( face == 2.0 ) { direction.x *= -1.0; // ( -u, v, 1 ) pos z } else if ( face == 3.0 ) { direction = direction.zyx; direction.xz *= -1.0; // ( -1, v, -u ) neg x } else if ( face == 4.0 ) { direction = direction.xzy; direction.xy *= -1.0; // ( -u, -1, v ) neg y } else if ( face == 5.0 ) { direction.z *= -1.0; // ( u, v, -1 ) neg z } return direction; } void main() { vOutputDirection = getDirection( uv, faceIndex ); gl_Position = vec4( position, 1.0 ); } `}function zR(t){let e=new WeakMap,n=null;function i(o){if(o&&o.isTexture){let l=o.mapping,c=l===_f||l===Tf,u=l===Xo||l===cr;if(c||u){let f=e.get(o),h=f!==void 0?f.texture.pmremVersion:0;if(o.isRenderTargetTexture&&o.pmremVersion!==h){if(n===null)n=new qU(t);return f=c?n.fromEquirectangular(o,f):n.fromCubemap(o,f),f.texture.pmremVersion=o.pmremVersion,e.set(o,f),f.texture}else if(f!==void 0)return f.texture;else{let p=o.image;if(c&&p&&p.height>0||u&&p&&s(p)){if(n===null)n=new qU(t);return f=c?n.fromEquirectangular(o):n.fromCubemap(o),f.texture.pmremVersion=o.pmremVersion,e.set(o,f),o.addEventListener("dispose",a),f.texture}else return null}}}return o}function s(o){let l=0,c=6;for(let u=0;u