@arcgis/core/views/3d/webgl-engine/effects/ssao/SSAO.js

ArcGIS Maps SDK for JavaScript: A complete 2D and 3D mapping and data visualization API

/*
All material copyright ESRI, All Rights Reserved, unless otherwise specified.
See https://js.arcgis.com/4.33/esri/copyright.txt for details.
*/
import{_ as e}from"../../../../../chunks/tslib.es6.js";import{clamp as r}from"../../../../../core/mathUtils.js";import{disposeMaybe as s}from"../../../../../core/maybe.js";import{watch as t}from"../../../../../core/reactiveUtils.js";import{Milliseconds as i}from"../../../../../core/time.js";import{property as o}from"../../../../../core/accessorSupport/decorators/property.js";import"../../../../../core/has.js";import"../../../../../core/Logger.js";import"../../../../../core/RandomLCG.js";import{subclass as a}from"../../../../../core/accessorSupport/decorators/subclass.js";import{set as m}from"../../../../../core/libs/gl-matrix-2/math/vec2.js";import{InternalRenderCategory as n}from"../../../webgl.js";import c from"../../../webgl/RenderNode.js";import{ColorFormat as p}from"../../core/FBOCacheFormats.js";import{distanceFadeEnd as h,distanceFadeStart as u}from"../../core/shaderLibrary/shading/ScreenSpaceConstants.js";import{SSAOBlurTechnique as l}from"./SSAOBlurTechnique.js";import{noiseData as d}from"./SSAONoiseData.js";import{SSAOPassParameters as f,BlurDrawParameters as b}from"./SSAOParameters.js";import{SSAOTechnique as w}from"./SSAOTechnique.js";import{RenderRequestType as T}from"../../lib/basicInterfaces.js";import{g as _}from"../../../../../chunks/SSAO.glsl.js";import{TextureWrapMode as P,PixelFormat as S,DepthStencilAttachment as j,FramebufferBit as g}from"../../../../webgl/enums.js";import{Texture as x}from"../../../../webgl/Texture.js";import{TextureDescriptor as q}from"../../../../webgl/TextureDescriptor.js";const O=2;let A=class extends c{constructor(e){super(e),this.consumes={required:["normals"]},this.produces=n.SSAO,this.isEnabled=()=>!1,this._enableTime=i(0),this._passParameters=new f,this._drawParameters=new b}initialize(){const e=Uint8Array.from(atob(d),(e=>e.charCodeAt(0))),r=new q;r.wrapMode=P.CLAMP_TO_EDGE,r.pixelFormat=S.RGB,r.wrapMode=P.REPEAT,r.hasMipmap=!0,r.width=32,r.height=32,this._passParameters.noiseTexture=new x(this.renderingContext,r,e),this.techniques.precompile(w),this.techniques.precompile(l),this.addHandles(t((()=>this.isEnabled()),(()=>this._enableTime=i(0))))}destroy(){this._passParameters.noiseTexture=s(this._passParameters.noiseTexture)}render(e){const s=e.find((({name:e})=>"normals"===e)),t=s?.getTexture(),o=s?.getTexture(j);if(!t||!o)return;const a=this.techniques.get(w),c=this.techniques.get(l);if(!a.compiled||!c.compiled)return this._enableTime=i(performance.now()),void this.requestRender(T.UPDATE);0===this._enableTime&&(this._enableTime=i(performance.now()));const d=this.renderingContext,f=this.view.qualitySettings.fadeDuration,b=this.bindParameters,P=b.camera,S=P.relativeElevation,x=r((h-S)/(h-u),0,1),q=f>0?Math.min(f,performance.now()-this._enableTime)/f:1,A=q*x;this._passParameters.normalTexture=t,this._passParameters.depthTexture=o,this._passParameters.projScale=1/P.computeScreenPixelSizeAtDist(1),this._passParameters.intensity=4*C/_(P)**6*A;const R=P.fullViewport[2],v=P.fullViewport[3],y=this.fboCache.acquire(R,v,"ssao input",p.RG8UNORM);d.bindFramebuffer(y.fbo),d.setViewport(0,0,R,v),d.bindTechnique(a,b,this._passParameters,this._drawParameters),d.screen.draw();const E=Math.round(R/O),M=Math.round(v/O),U=this.fboCache.acquire(E,M,"ssao blur",p.R8UNORM);d.bindFramebuffer(U.fbo),this._drawParameters.colorTexture=y.getTexture(),m(this._drawParameters.blurSize,0,O/v),d.bindTechnique(c,b,this._passParameters,this._drawParameters),d.setViewport(0,0,E,M),d.screen.draw(),y.release();const V=this.fboCache.acquire(E,M,n.SSAO,p.R8UNORM);return d.bindFramebuffer(V.fbo),d.setViewport(0,0,R,v),d.setClearColor(1,1,1,0),d.clear(g.COLOR),this._drawParameters.colorTexture=U.getTexture(),m(this._drawParameters.blurSize,O/R,0),d.bindTechnique(c,b,this._passParameters,this._drawParameters),d.setViewport(0,0,E,M),d.screen.draw(),d.setViewport4fv(P.fullViewport),U.release(),q<1&&this.requestRender(T.UPDATE),V}};e([o()],A.prototype,"consumes",void 0),e([o()],A.prototype,"produces",void 0),e([o({constructOnly:!0})],A.prototype,"isEnabled",void 0),A=e([a("esri.views.3d.webgl-engine.effects.ssao.SSAO")],A);const C=.5;export{A as SSAO,O as blurSizePixels};