Babylon.js/materialsLibrary/dist/babylon.skyMaterial.js

/// <reference path="../../../dist/preview release/babylon.d.ts"/>

var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
    if (typeof Reflect === "object" && typeof Reflect.decorate === "function") return Reflect.decorate(decorators, target, key, desc);
    switch (arguments.length) {
        case 2: return decorators.reduceRight(function(o, d) { return (d && d(o)) || o; }, target);
        case 3: return decorators.reduceRight(function(o, d) { return (d && d(target, key)), void 0; }, void 0);
        case 4: return decorators.reduceRight(function(o, d) { return (d && d(target, key, o)) || o; }, desc);
    }
};
var BABYLON;
(function (BABYLON) {
    var SkyMaterialDefines = (function (_super) {
        __extends(SkyMaterialDefines, _super);
        function SkyMaterialDefines() {
            _super.call(this);
            this.CLIPPLANE = false;
            this.POINTSIZE = false;
            this.FOG = false;
            this.VERTEXCOLOR = false;
            this.VERTEXALPHA = false;
            this._keys = Object.keys(this);
        }
        return SkyMaterialDefines;
    })(BABYLON.MaterialDefines);
    var SkyMaterial = (function (_super) {
        __extends(SkyMaterial, _super);
        function SkyMaterial(name, scene) {
            _super.call(this, name, scene);
            // Public members
            this.luminance = 1.0;
            this.turbidity = 10.0;
            this.rayleigh = 2.0;
            this.mieCoefficient = 0.005;
            this.mieDirectionalG = 0.8;
            this.distance = 500;
            this.inclination = 0.49;
            this.azimuth = 0.25;
            this.sunPosition = new BABYLON.Vector3(0, 100, 0);
            this.useSunPosition = false;
            // Private members
            this._cameraPosition = BABYLON.Vector3.Zero();
            this._defines = new SkyMaterialDefines();
            this._cachedDefines = new SkyMaterialDefines();
        }
        SkyMaterial.prototype.needAlphaBlending = function () {
            return (this.alpha < 1.0);
        };
        SkyMaterial.prototype.needAlphaTesting = function () {
            return false;
        };
        SkyMaterial.prototype.getAlphaTestTexture = function () {
            return null;
        };
        // Methods   
        SkyMaterial.prototype._checkCache = function (scene, mesh, useInstances) {
            if (!mesh) {
                return true;
            }
            if (mesh._materialDefines && mesh._materialDefines.isEqual(this._defines)) {
                return true;
            }
            return false;
        };
        SkyMaterial.prototype.isReady = function (mesh, useInstances) {
            if (this.checkReadyOnlyOnce) {
                if (this._wasPreviouslyReady) {
                    return true;
                }
            }
            var scene = this.getScene();
            if (!this.checkReadyOnEveryCall) {
                if (this._renderId === scene.getRenderId()) {
                    if (this._checkCache(scene, mesh, useInstances)) {
                        return true;
                    }
                }
            }
            var engine = scene.getEngine();
            this._defines.reset();
            // Effect
            if (scene.clipPlane) {
                this._defines.CLIPPLANE = true;
            }
            // Point size
            if (this.pointsCloud || scene.forcePointsCloud) {
                this._defines.POINTSIZE = true;
            }
            // Fog
            if (scene.fogEnabled && mesh && mesh.applyFog && scene.fogMode !== BABYLON.Scene.FOGMODE_NONE && this.fogEnabled) {
                this._defines.FOG = true;
            }
            // Attribs
            if (mesh) {
                if (mesh.useVertexColors && mesh.isVerticesDataPresent(BABYLON.VertexBuffer.ColorKind)) {
                    this._defines.VERTEXCOLOR = true;
                    if (mesh.hasVertexAlpha) {
                        this._defines.VERTEXALPHA = true;
                    }
                }
            }
            // Get correct effect      
            if (!this._defines.isEqual(this._cachedDefines) || !this._effect) {
                this._defines.cloneTo(this._cachedDefines);
                scene.resetCachedMaterial();
                // Fallbacks
                var fallbacks = new BABYLON.EffectFallbacks();
                if (this._defines.FOG) {
                    fallbacks.addFallback(1, "FOG");
                }
                //Attributes
                var attribs = [BABYLON.VertexBuffer.PositionKind];
                if (this._defines.VERTEXCOLOR) {
                    attribs.push(BABYLON.VertexBuffer.ColorKind);
                }
                // Legacy browser patch
                var shaderName = "sky";
                var join = this._defines.toString();
                this._effect = scene.getEngine().createEffect(shaderName, attribs, ["world", "viewProjection", "view",
                    "vFogInfos", "vFogColor", "pointSize", "vClipPlane",
                    "luminance", "turbidity", "rayleigh", "mieCoefficient", "mieDirectionalG", "sunPosition",
                    "cameraPosition"
                ], [], join, fallbacks, this.onCompiled, this.onError);
            }
            if (!this._effect.isReady()) {
                return false;
            }
            this._renderId = scene.getRenderId();
            this._wasPreviouslyReady = true;
            if (mesh) {
                if (!mesh._materialDefines) {
                    mesh._materialDefines = new SkyMaterialDefines();
                }
                this._defines.cloneTo(mesh._materialDefines);
            }
            return true;
        };
        SkyMaterial.prototype.bindOnlyWorldMatrix = function (world) {
            this._effect.setMatrix("world", world);
        };
        SkyMaterial.prototype.bind = function (world, mesh) {
            var scene = this.getScene();
            // Matrices        
            this.bindOnlyWorldMatrix(world);
            this._effect.setMatrix("viewProjection", scene.getTransformMatrix());
            if (scene.getCachedMaterial() !== this) {
                // Clip plane
                if (scene.clipPlane) {
                    var clipPlane = scene.clipPlane;
                    this._effect.setFloat4("vClipPlane", clipPlane.normal.x, clipPlane.normal.y, clipPlane.normal.z, clipPlane.d);
                }
                // Point size
                if (this.pointsCloud) {
                    this._effect.setFloat("pointSize", this.pointSize);
                }
            }
            // View
            if (scene.fogEnabled && mesh.applyFog && scene.fogMode !== BABYLON.Scene.FOGMODE_NONE) {
                this._effect.setMatrix("view", scene.getViewMatrix());
            }
            // Fog
            BABYLON.MaterialHelper.BindFogParameters(scene, mesh, this._effect);
            // Sky
            var camera = scene.activeCamera;
            if (camera) {
                var cameraWorldMatrix = camera.getWorldMatrix();
                this._cameraPosition.x = cameraWorldMatrix.m[12];
                this._cameraPosition.y = cameraWorldMatrix.m[13];
                this._cameraPosition.z = cameraWorldMatrix.m[14];
                this._effect.setVector3("cameraPosition", this._cameraPosition);
            }
            this._effect.setFloat("luminance", this.luminance);
            this._effect.setFloat("turbidity", this.turbidity);
            this._effect.setFloat("rayleigh", this.rayleigh);
            this._effect.setFloat("mieCoefficient", this.mieCoefficient);
            this._effect.setFloat("mieDirectionalG", this.mieDirectionalG);
            if (!this.useSunPosition) {
                var theta = Math.PI * (this.inclination - 0.5);
                var phi = 2 * Math.PI * (this.azimuth - 0.5);
                this.sunPosition.x = this.distance * Math.cos(phi);
                this.sunPosition.y = this.distance * Math.sin(phi) * Math.sin(theta);
                this.sunPosition.z = this.distance * Math.sin(phi) * Math.cos(theta);
            }
            this._effect.setVector3("sunPosition", this.sunPosition);
            _super.prototype.bind.call(this, world, mesh);
        };
        SkyMaterial.prototype.getAnimatables = function () {
            return [];
        };
        SkyMaterial.prototype.dispose = function (forceDisposeEffect) {
            _super.prototype.dispose.call(this, forceDisposeEffect);
        };
        SkyMaterial.prototype.clone = function (name) {
            var _this = this;
            return BABYLON.SerializationHelper.Clone(function () { return new SkyMaterial(name, _this.getScene()); }, this);
        };
        SkyMaterial.prototype.serialize = function () {
            var serializationObject = BABYLON.SerializationHelper.Serialize(this);
            serializationObject.customType = "BABYLON.SkyMaterial";
            return serializationObject;
        };
        // Statics
        SkyMaterial.Parse = function (source, scene, rootUrl) {
            return BABYLON.SerializationHelper.Parse(function () { return new SkyMaterial(source.name, scene); }, source, scene, rootUrl);
        };
        __decorate([
            BABYLON.serialize()
        ], SkyMaterial.prototype, "luminance");
        __decorate([
            BABYLON.serialize()
        ], SkyMaterial.prototype, "turbidity");
        __decorate([
            BABYLON.serialize()
        ], SkyMaterial.prototype, "rayleigh");
        __decorate([
            BABYLON.serialize()
        ], SkyMaterial.prototype, "mieCoefficient");
        __decorate([
            BABYLON.serialize()
        ], SkyMaterial.prototype, "mieDirectionalG");
        __decorate([
            BABYLON.serialize()
        ], SkyMaterial.prototype, "distance");
        __decorate([
            BABYLON.serialize()
        ], SkyMaterial.prototype, "inclination");
        __decorate([
            BABYLON.serialize()
        ], SkyMaterial.prototype, "azimuth");
        __decorate([
            BABYLON.serializeAsVector3()
        ], SkyMaterial.prototype, "sunPosition");
        __decorate([
            BABYLON.serialize()
        ], SkyMaterial.prototype, "useSunPosition");
        return SkyMaterial;
    })(BABYLON.Material);
    BABYLON.SkyMaterial = SkyMaterial;
})(BABYLON || (BABYLON = {}));

BABYLON.Effect.ShadersStore['skyVertexShader'] = "precision highp float;\n\nattribute vec3 position;\n#ifdef VERTEXCOLOR\nattribute vec4 color;\n#endif\n\nuniform mat4 world;\nuniform mat4 view;\nuniform mat4 viewProjection;\n#ifdef POINTSIZE\nuniform float pointSize;\n#endif\n\nvarying vec3 vPositionW;\n#ifdef VERTEXCOLOR\nvarying vec4 vColor;\n#endif\n#include<clipPlaneVertexDeclaration>\n#include<fogVertexDeclaration>\nvoid main(void) {\ngl_Position=viewProjection*world*vec4(position,1.0);\nvec4 worldPos=world*vec4(position,1.0);\nvPositionW=vec3(worldPos);\n\n#include<clipPlaneVertex>\n\n#include<fogVertex>\n\n#ifdef VERTEXCOLOR\nvColor=color;\n#endif\n\n#ifdef POINTSIZE\ngl_PointSize=pointSize;\n#endif\n}\n";
BABYLON.Effect.ShadersStore['skyPixelShader'] = "precision highp float;\n\nvarying vec3 vPositionW;\n#ifdef VERTEXCOLOR\nvarying vec4 vColor;\n#endif\n#include<clipPlaneFragmentDeclaration>\n\nuniform vec3 cameraPosition;\nuniform float luminance;\nuniform float turbidity;\nuniform float rayleigh;\nuniform float mieCoefficient;\nuniform float mieDirectionalG;\nuniform vec3 sunPosition;\n\n#include<fogFragmentDeclaration>\n\nconst float e=2.71828182845904523536028747135266249775724709369995957;\nconst float pi=3.141592653589793238462643383279502884197169;\nconst float n=1.0003;\nconst float N=2.545E25;\nconst float pn=0.035;\nconst vec3 lambda=vec3(680E-9,550E-9,450E-9);\nconst vec3 K=vec3(0.686,0.678,0.666);\nconst float v=4.0;\nconst float rayleighZenithLength=8.4E3;\nconst float mieZenithLength=1.25E3;\nconst vec3 up=vec3(0.0,1.0,0.0);\nconst float EE=1000.0;\nconst float sunAngularDiameterCos=0.999956676946448443553574619906976478926848692873900859324;\nconst float cutoffAngle=pi/1.95;\nconst float steepness=1.5;\nvec3 totalRayleigh(vec3 lambda)\n{\nreturn (8.0*pow(pi,3.0)*pow(pow(n,2.0)-1.0,2.0)*(6.0+3.0*pn))/(3.0*N*pow(lambda,vec3(4.0))*(6.0-7.0*pn));\n}\nvec3 simplifiedRayleigh()\n{\nreturn 0.0005/vec3(94,40,18);\n}\nfloat rayleighPhase(float cosTheta)\n{ \nreturn (3.0/(16.0*pi))*(1.0+pow(cosTheta,2.0));\n}\nvec3 totalMie(vec3 lambda,vec3 K,float T)\n{\nfloat c=(0.2*T )*10E-18;\nreturn 0.434*c*pi*pow((2.0*pi)/lambda,vec3(v-2.0))*K;\n}\nfloat hgPhase(float cosTheta,float g)\n{\nreturn (1.0/(4.0*pi))*((1.0-pow(g,2.0))/pow(1.0-2.0*g*cosTheta+pow(g,2.0),1.5));\n}\nfloat sunIntensity(float zenithAngleCos)\n{\nreturn EE*max(0.0,1.0-exp(-((cutoffAngle-acos(zenithAngleCos))/steepness)));\n}\nfloat A=0.15;\nfloat B=0.50;\nfloat C=0.10;\nfloat D=0.20;\nfloat EEE=0.02;\nfloat F=0.30;\nfloat W=1000.0;\nvec3 Uncharted2Tonemap(vec3 x)\n{\nreturn ((x*(A*x+C*B)+D*EEE)/(x*(A*x+B)+D*F))-EEE/F;\n}\nvoid main(void) {\n\n#include<clipPlaneFragment>\n\nfloat sunfade=1.0-clamp(1.0-exp((sunPosition.y/450000.0)),0.0,1.0);\nfloat rayleighCoefficient=rayleigh-(1.0*(1.0-sunfade));\nvec3 sunDirection=normalize(sunPosition);\nfloat sunE=sunIntensity(dot(sunDirection,up));\nvec3 betaR=simplifiedRayleigh()*rayleighCoefficient;\nvec3 betaM=totalMie(lambda,K,turbidity)*mieCoefficient;\nfloat zenithAngle=acos(max(0.0,dot(up,normalize(vPositionW-cameraPosition))));\nfloat sR=rayleighZenithLength/(cos(zenithAngle)+0.15*pow(93.885-((zenithAngle*180.0)/pi),-1.253));\nfloat sM=mieZenithLength/(cos(zenithAngle)+0.15*pow(93.885-((zenithAngle*180.0)/pi),-1.253));\nvec3 Fex=exp(-(betaR*sR+betaM*sM));\nfloat cosTheta=dot(normalize(vPositionW-cameraPosition),sunDirection);\nfloat rPhase=rayleighPhase(cosTheta*0.5+0.5);\nvec3 betaRTheta=betaR*rPhase;\nfloat mPhase=hgPhase(cosTheta,mieDirectionalG);\nvec3 betaMTheta=betaM*mPhase;\nvec3 Lin=pow(sunE*((betaRTheta+betaMTheta)/(betaR+betaM))*(1.0-Fex),vec3(1.5));\nLin*=mix(vec3(1.0),pow(sunE*((betaRTheta+betaMTheta)/(betaR+betaM))*Fex,vec3(1.0/2.0)),clamp(pow(1.0-dot(up,sunDirection),5.0),0.0,1.0));\nvec3 direction=normalize(vPositionW-cameraPosition);\nfloat theta=acos(direction.y);\nfloat phi=atan(direction.z,direction.x);\nvec2 uv=vec2(phi,theta)/vec2(2.0*pi,pi)+vec2(0.5,0.0);\nvec3 L0=vec3(0.1)*Fex;\nfloat sundisk=smoothstep(sunAngularDiameterCos,sunAngularDiameterCos+0.00002,cosTheta);\nL0+=(sunE*19000.0*Fex)*sundisk;\nvec3 whiteScale=1.0/Uncharted2Tonemap(vec3(W));\nvec3 texColor=(Lin+L0); \ntexColor*=0.04 ;\ntexColor+=vec3(0.0,0.001,0.0025)*0.3;\nfloat g_fMaxLuminance=1.0;\nfloat fLumScaled=0.1/luminance; \nfloat fLumCompressed=(fLumScaled*(1.0+(fLumScaled/(g_fMaxLuminance*g_fMaxLuminance))))/(1.0+fLumScaled); \nfloat ExposureBias=fLumCompressed;\nvec3 curr=Uncharted2Tonemap((log2(2.0/pow(luminance,4.0)))*texColor);\nvec3 skyColor=curr*whiteScale;\nvec3 retColor=pow(skyColor,vec3(1.0/(1.2+(1.2*sunfade))));\nvec4 baseColor=vec4(retColor,1.0);\n\n\nfloat alpha=1.0;\n#ifdef VERTEXCOLOR\nbaseColor.rgb*=vColor.rgb;\n#endif\n\nvec3 diffuseBase=vec3(1.0,1.0,1.0);\n#ifdef VERTEXALPHA\nalpha*=vColor.a;\n#endif\n\nvec4 color=vec4(baseColor.rgb,alpha);\n\n#include<fogFragment>\ngl_FragColor=color;\n}";