var BABYLON;!function(n){var e=4,i=function(n){function e(){n.call(this),this.DIFFUSE=!1,this.CLIPPLANE=!1,this.ALPHATEST=!1,this.POINTSIZE=!1,this.FOG=!1,this.LIGHT0=!1,this.LIGHT1=!1,this.LIGHT2=!1,this.LIGHT3=!1,this.SPOTLIGHT0=!1,this.SPOTLIGHT1=!1,this.SPOTLIGHT2=!1,this.SPOTLIGHT3=!1,this.HEMILIGHT0=!1,this.HEMILIGHT1=!1,this.HEMILIGHT2=!1,this.HEMILIGHT3=!1,this.DIRLIGHT0=!1,this.DIRLIGHT1=!1,this.DIRLIGHT2=!1,this.DIRLIGHT3=!1,this.POINTLIGHT0=!1,this.POINTLIGHT1=!1,this.POINTLIGHT2=!1,this.POINTLIGHT3=!1,this.SHADOW0=!1,this.SHADOW1=!1,this.SHADOW2=!1,this.SHADOW3=!1,this.SHADOWS=!1,this.SHADOWVSM0=!1,this.SHADOWVSM1=!1,this.SHADOWVSM2=!1,this.SHADOWVSM3=!1,this.SHADOWPCF0=!1,this.SHADOWPCF1=!1,this.SHADOWPCF2=!1,this.SHADOWPCF3=!1,this.NORMAL=!1,this.UV1=!1,this.UV2=!1,this.VERTEXCOLOR=!1,this.VERTEXALPHA=!1,this.BONES=!1,this.BONES4=!1,this.BonesPerMesh=0,this.INSTANCES=!1,this._keys=Object.keys(this)}return __extends(e,n),e}(n.MaterialDefines),r=function(r){function o(e,o){r.call(this,e,o),this.topColor=new n.Color3(1,0,0),this.topColorAlpha=1,this.bottomColor=new n.Color3(0,0,1),this.bottomColorAlpha=1,this.offset=0,this.smoothness=1,this.disableLighting=!1,this._worldViewProjectionMatrix=n.Matrix.Zero(),this._scaledDiffuse=new n.Color3,this._defines=new i,this._cachedDefines=new i,this._cachedDefines.BonesPerMesh=-1}return __extends(o,r),o.prototype.needAlphaBlending=function(){return this.alpha<1||this.topColorAlpha<1||this.bottomColorAlpha<1},o.prototype.needAlphaTesting=function(){return!0},o.prototype.getAlphaTestTexture=function(){return null},o.prototype._checkCache=function(n,e,i){return e?this._defines.INSTANCES!==i?!1:e._materialDefines&&e._materialDefines.isEqual(this._defines)?!0:!1:!0},o.prototype.isReady=function(r,o){if(this.checkReadyOnlyOnce&&this._wasPreviouslyReady)return!0;var t=this.getScene();if(!this.checkReadyOnEveryCall&&this._renderId===t.getRenderId()&&this._checkCache(t,r,o))return!0;var s=t.getEngine(),f=!1,a=!1;this._defines.reset(),t.clipPlane&&(this._defines.CLIPPLANE=!0),s.getAlphaTesting()&&(this._defines.ALPHATEST=!0),(this.pointsCloud||t.forcePointsCloud)&&(this._defines.POINTSIZE=!0),t.fogEnabled&&r&&r.applyFog&&t.fogMode!==n.Scene.FOGMODE_NONE&&this.fogEnabled&&(this._defines.FOG=!0);var d=0;if(t.lightsEnabled&&!this.disableLighting)for(var h=0;h<t.lights.length;h++){var l=t.lights[h];if(l.isEnabled()){if(l._excludedMeshesIds.length>0){for(var c=0;c<l._excludedMeshesIds.length;c++){var v=t.getMeshByID(l._excludedMeshesIds[c]);v&&l.excludedMeshes.push(v)}l._excludedMeshesIds=[]}if(l._includedOnlyMeshesIds.length>0){for(var g=0;g<l._includedOnlyMeshesIds.length;g++){var u=t.getMeshByID(l._includedOnlyMeshesIds[g]);u&&l.includedOnlyMeshes.push(u)}l._includedOnlyMeshesIds=[]}if(l.canAffectMesh(r)){f=!0,this._defines["LIGHT"+d]=!0;var m;if(m=l instanceof n.SpotLight?"SPOTLIGHT"+d:l instanceof n.HemisphericLight?"HEMILIGHT"+d:l instanceof n.PointLight?"POINTLIGHT"+d:"DIRLIGHT"+d,this._defines[m]=!0,t.shadowsEnabled){var p=l.getShadowGenerator();r&&r.receiveShadows&&p&&(this._defines["SHADOW"+d]=!0,this._defines.SHADOWS=!0,(p.useVarianceShadowMap||p.useBlurVarianceShadowMap)&&(this._defines["SHADOWVSM"+d]=!0),p.usePoissonSampling&&(this._defines["SHADOWPCF"+d]=!0))}if(d++,d===e)break}}}if(r&&(f&&r.isVerticesDataPresent(n.VertexBuffer.NormalKind)&&(this._defines.NORMAL=!0),a&&(r.isVerticesDataPresent(n.VertexBuffer.UVKind)&&(this._defines.UV1=!0),r.isVerticesDataPresent(n.VertexBuffer.UV2Kind)&&(this._defines.UV2=!0)),r.useVertexColors&&r.isVerticesDataPresent(n.VertexBuffer.ColorKind)&&(this._defines.VERTEXCOLOR=!0,r.hasVertexAlpha&&(this._defines.VERTEXALPHA=!0)),r.useBones&&r.computeBonesUsingShaders&&(this._defines.BONES=!0,this._defines.BonesPerMesh=r.skeleton.bones.length+1,this._defines.BONES4=!0),o&&(this._defines.INSTANCES=!0)),!this._defines.isEqual(this._cachedDefines)){this._defines.cloneTo(this._cachedDefines),t.resetCachedMaterial();var L=new n.EffectFallbacks;for(this._defines.FOG&&L.addFallback(1,"FOG"),d=0;e>d;d++)this._defines["LIGHT"+d]&&(d>0&&L.addFallback(d,"LIGHT"+d),this._defines["SHADOW"+d]&&L.addFallback(0,"SHADOW"+d),this._defines["SHADOWPCF"+d]&&L.addFallback(0,"SHADOWPCF"+d),this._defines["SHADOWVSM"+d]&&L.addFallback(0,"SHADOWVSM"+d));this._defines.BONES4&&L.addFallback(0,"BONES4");var I=[n.VertexBuffer.PositionKind];this._defines.NORMAL&&I.push(n.VertexBuffer.NormalKind),this._defines.UV1&&I.push(n.VertexBuffer.UVKind),this._defines.UV2&&I.push(n.VertexBuffer.UV2Kind),this._defines.VERTEXCOLOR&&I.push(n.VertexBuffer.ColorKind),this._defines.BONES&&(I.push(n.VertexBuffer.MatricesIndicesKind),I.push(n.VertexBuffer.MatricesWeightsKind)),this._defines.INSTANCES&&(I.push("world0"),I.push("world1"),I.push("world2"),I.push("world3"));var D="gradient",S=this._defines.toString();this._effect=t.getEngine().createEffect(D,I,["world","view","viewProjection","vEyePosition","vLightsType","vDiffuseColor","vLightData0","vLightDiffuse0","vLightSpecular0","vLightDirection0","vLightGround0","lightMatrix0","vLightData1","vLightDiffuse1","vLightSpecular1","vLightDirection1","vLightGround1","lightMatrix1","vLightData2","vLightDiffuse2","vLightSpecular2","vLightDirection2","vLightGround2","lightMatrix2","vLightData3","vLightDiffuse3","vLightSpecular3","vLightDirection3","vLightGround3","lightMatrix3","vFogInfos","vFogColor","pointSize","vDiffuseInfos","mBones","vClipPlane","diffuseMatrix","shadowsInfo0","shadowsInfo1","shadowsInfo2","shadowsInfo3","depthValues","topColor","bottomColor","offset","smoothness"],["diffuseSampler","shadowSampler0","shadowSampler1","shadowSampler2","shadowSampler3"],S,L,this.onCompiled,this.onError)}return this._effect.isReady()?(this._renderId=t.getRenderId(),this._wasPreviouslyReady=!0,r&&(r._materialDefines||(r._materialDefines=new i),this._defines.cloneTo(r._materialDefines)),!0):!1},o.prototype.bindOnlyWorldMatrix=function(n){this._effect.setMatrix("world",n)},o.prototype.bind=function(i,o){var t=this.getScene();if(this.bindOnlyWorldMatrix(i),this._effect.setMatrix("viewProjection",t.getTransformMatrix()),o&&o.useBones&&o.computeBonesUsingShaders&&this._effect.setMatrices("mBones",o.skeleton.getTransformMatrices()),t.getCachedMaterial()!==this){if(t.clipPlane){var s=t.clipPlane;this._effect.setFloat4("vClipPlane",s.normal.x,s.normal.y,s.normal.z,s.d)}this.pointsCloud&&this._effect.setFloat("pointSize",this.pointSize),this._effect.setVector3("vEyePosition",t._mirroredCameraPosition?t._mirroredCameraPosition:t.activeCamera.position)}if(this._effect.setColor4("vDiffuseColor",this._scaledDiffuse,this.alpha*o.visibility),t.lightsEnabled&&!this.disableLighting)for(var f=0,a=!1,d=0;d<t.lights.length;d++){var h=t.lights[d];if(h.isEnabled()&&h.canAffectMesh(o)){if(h instanceof n.PointLight?h.transferToEffect(this._effect,"vLightData"+f):h instanceof n.DirectionalLight?h.transferToEffect(this._effect,"vLightData"+f):h instanceof n.SpotLight?h.transferToEffect(this._effect,"vLightData"+f,"vLightDirection"+f):h instanceof n.HemisphericLight&&h.transferToEffect(this._effect,"vLightData"+f,"vLightGround"+f),h.diffuse.scaleToRef(h.intensity,this._scaledDiffuse),this._effect.setColor4("vLightDiffuse"+f,this._scaledDiffuse,h.range),t.shadowsEnabled){var l=h.getShadowGenerator();o.receiveShadows&&l&&(h.needCube()?a||(a=!0,this._effect.setFloat2("depthValues",t.activeCamera.minZ,t.activeCamera.maxZ)):this._effect.setMatrix("lightMatrix"+f,l.getTransformMatrix()),this._effect.setTexture("shadowSampler"+f,l.getShadowMapForRendering()),this._effect.setFloat3("shadowsInfo"+f,l.getDarkness(),l.getShadowMap().getSize().width,l.bias))}if(f++,f===e)break}}t.fogEnabled&&o.applyFog&&t.fogMode!==n.Scene.FOGMODE_NONE&&this._effect.setMatrix("view",t.getViewMatrix()),t.fogEnabled&&o.applyFog&&t.fogMode!==n.Scene.FOGMODE_NONE&&(this._effect.setFloat4("vFogInfos",t.fogMode,t.fogStart,t.fogEnd,t.fogDensity),this._effect.setColor3("vFogColor",t.fogColor)),this._effect.setColor4("topColor",this.topColor,this.topColorAlpha),this._effect.setColor4("bottomColor",this.bottomColor,this.bottomColorAlpha),this._effect.setFloat("offset",this.offset),this._effect.setFloat("smoothness",this.smoothness),r.prototype.bind.call(this,i,o)},o.prototype.getAnimatables=function(){return[]},o.prototype.dispose=function(n){r.prototype.dispose.call(this,n)},o.prototype.clone=function(n){var e=new o(n,this.getScene());return this.copyTo(e),e.topColor=this.topColor.clone(),e.bottomColor=this.bottomColor.clone(),e.offset=this.offset,e},o.prototype.serialize=function(){var n=r.prototype.serialize.call(this);return n.customType="BABYLON.GradientMaterial",n.topColor=this.topColor.asArray(),n.bottomColor=this.bottomColor.asArray(),n.offset=this.offset,n.disableLighting=this.disableLighting,n},o.Parse=function(e,i,r){var t=new o(e.name,i);return t.topColor=n.Color3.FromArray(e.topColor),t.bottomColor=n.Color3.FromArray(e.bottomColor),t.offset=e.offset,t.disableLighting=e.disableLighting,t.alpha=e.alpha,t.id=e.id,n.Tags.AddTagsTo(t,e.tags),t.backFaceCulling=e.backFaceCulling,t.wireframe=e.wireframe,e.checkReadyOnlyOnce&&(t.checkReadyOnlyOnce=e.checkReadyOnlyOnce),t},o}(n.Material);n.GradientMaterial=r}(BABYLON||(BABYLON={})),BABYLON.Effect.ShadersStore.gradientVertexShader="precision highp float;\r\n\r\n\r\n// Attributes\r\nattribute vec3 position;\r\n#ifdef NORMAL\r\nattribute vec3 normal;\r\n#endif\r\n#ifdef UV1\r\nattribute vec2 uv;\r\n#endif\r\n#ifdef UV2\r\nattribute vec2 uv2;\r\n#endif\r\n#ifdef VERTEXCOLOR\r\nattribute vec4 color;\r\n#endif\r\n#ifdef BONES\r\nattribute vec4 matricesIndices;\r\nattribute vec4 matricesWeights;\r\n#endif\r\n\r\n// Uniforms\r\n\r\n#ifdef INSTANCES\r\nattribute vec4 world0;\r\nattribute vec4 world1;\r\nattribute vec4 world2;\r\nattribute vec4 world3;\r\n#else\r\nuniform mat4 world;\r\n#endif\r\n\r\nuniform mat4 view;\r\nuniform mat4 viewProjection;\r\n\r\n#ifdef DIFFUSE\r\nvarying vec2 vDiffuseUV;\r\nuniform mat4 diffuseMatrix;\r\nuniform vec2 vDiffuseInfos;\r\n#endif\r\n\r\n#ifdef BONES\r\nuniform mat4 mBones[BonesPerMesh];\r\n#endif\r\n\r\n#ifdef POINTSIZE\r\nuniform float pointSize;\r\n#endif\r\n\r\n// Output\r\nvarying vec3 vPositionW;\r\n#ifdef NORMAL\r\nvarying vec3 vNormalW;\r\n#endif\r\n\r\n#ifdef VERTEXCOLOR\r\nvarying vec4 vColor;\r\n#endif\r\n\r\n#ifdef CLIPPLANE\r\nuniform vec4 vClipPlane;\r\nvarying float fClipDistance;\r\n#endif\r\n\r\n#ifdef FOG\r\nvarying float fFogDistance;\r\n#endif\r\n\r\n#ifdef SHADOWS\r\n#if defined(SPOTLIGHT0) || defined(DIRLIGHT0)\r\nuniform mat4 lightMatrix0;\r\nvarying vec4 vPositionFromLight0;\r\n#endif\r\n#if defined(SPOTLIGHT1) || defined(DIRLIGHT1)\r\nuniform mat4 lightMatrix1;\r\nvarying vec4 vPositionFromLight1;\r\n#endif\r\n#if defined(SPOTLIGHT2) || defined(DIRLIGHT2)\r\nuniform mat4 lightMatrix2;\r\nvarying vec4 vPositionFromLight2;\r\n#endif\r\n#if defined(SPOTLIGHT3) || defined(DIRLIGHT3)\r\nuniform mat4 lightMatrix3;\r\nvarying vec4 vPositionFromLight3;\r\n#endif\r\n#endif\r\n\r\nvoid main(void) {\r\n	mat4 finalWorld;\r\n\r\n#ifdef INSTANCES\r\n	finalWorld = mat4(world0, world1, world2, world3);\r\n#else\r\n	finalWorld = world;\r\n#endif\r\n\r\n#ifdef BONES\r\n	mat4 m0 = mBones[int(matricesIndices.x)] * matricesWeights.x;\r\n	mat4 m1 = mBones[int(matricesIndices.y)] * matricesWeights.y;\r\n	mat4 m2 = mBones[int(matricesIndices.z)] * matricesWeights.z;\r\n\r\n#ifdef BONES4\r\n	mat4 m3 = mBones[int(matricesIndices.w)] * matricesWeights.w;\r\n	finalWorld = finalWorld * (m0 + m1 + m2 + m3);\r\n#else\r\n	finalWorld = finalWorld * (m0 + m1 + m2);\r\n#endif \r\n\r\n#endif\r\n	gl_Position = viewProjection * finalWorld * vec4(position, 1.0);\r\n\r\n	vec4 worldPos = finalWorld * vec4(position, 1.0);\r\n	vPositionW = vec3(worldPos);\r\n\r\n#ifdef NORMAL\r\n	vNormalW = normalize(vec3(finalWorld * vec4(normal, 0.0)));\r\n#endif\r\n\r\n	// Texture coordinates\r\n#ifndef UV1\r\n	vec2 uv = vec2(0., 0.);\r\n#endif\r\n#ifndef UV2\r\n	vec2 uv2 = vec2(0., 0.);\r\n#endif\r\n\r\n#ifdef DIFFUSE\r\n	if (vDiffuseInfos.x == 0.)\r\n	{\r\n		vDiffuseUV = vec2(diffuseMatrix * vec4(uv, 1.0, 0.0));\r\n	}\r\n	else\r\n	{\r\n		vDiffuseUV = vec2(diffuseMatrix * vec4(uv2, 1.0, 0.0));\r\n	}\r\n#endif\r\n\r\n	// Clip plane\r\n#ifdef CLIPPLANE\r\n	fClipDistance = dot(worldPos, vClipPlane);\r\n#endif\r\n\r\n	// Fog\r\n#ifdef FOG\r\n	fFogDistance = (view * worldPos).z;\r\n#endif\r\n\r\n	// Shadows\r\n#ifdef SHADOWS\r\n#if defined(SPOTLIGHT0) || defined(DIRLIGHT0)\r\n	vPositionFromLight0 = lightMatrix0 * worldPos;\r\n#endif\r\n#if defined(SPOTLIGHT1) || defined(DIRLIGHT1)\r\n	vPositionFromLight1 = lightMatrix1 * worldPos;\r\n#endif\r\n#if defined(SPOTLIGHT2) || defined(DIRLIGHT2)\r\n	vPositionFromLight2 = lightMatrix2 * worldPos;\r\n#endif\r\n#if defined(SPOTLIGHT3) || defined(DIRLIGHT3)\r\n	vPositionFromLight3 = lightMatrix3 * worldPos;\r\n#endif\r\n#endif\r\n\r\n	// Vertex color\r\n#ifdef VERTEXCOLOR\r\n	vColor = color;\r\n#endif\r\n\r\n	// Point size\r\n#ifdef POINTSIZE\r\n	gl_PointSize = pointSize;\r\n#endif\r\n}\r\n",BABYLON.Effect.ShadersStore.gradientPixelShader="precision highp float;\r\n\r\n// Constants\r\nuniform vec3 vEyePosition;\r\nuniform vec4 vDiffuseColor;\r\n\r\n// Gradient variables\r\nuniform vec4 topColor;\r\nuniform vec4 bottomColor;\r\nuniform float offset;\r\nuniform float smoothness;\r\n\r\n// Input\r\nvarying vec3 vPositionW;\r\n\r\n#ifdef NORMAL\r\nvarying vec3 vNormalW;\r\n#endif\r\n\r\n#ifdef VERTEXCOLOR\r\nvarying vec4 vColor;\r\n#endif\r\n\r\n// Lights\r\n#ifdef LIGHT0\r\nuniform vec4 vLightData0;\r\nuniform vec4 vLightDiffuse0;\r\n#ifdef SHADOW0\r\n#if defined(SPOTLIGHT0) || defined(DIRLIGHT0)\r\nvarying vec4 vPositionFromLight0;\r\nuniform sampler2D shadowSampler0;\r\n#else\r\nuniform samplerCube shadowSampler0;\r\n#endif\r\nuniform vec3 shadowsInfo0;\r\n#endif\r\n#ifdef SPOTLIGHT0\r\nuniform vec4 vLightDirection0;\r\n#endif\r\n#ifdef HEMILIGHT0\r\nuniform vec3 vLightGround0;\r\n#endif\r\n#endif\r\n\r\n#ifdef LIGHT1\r\nuniform vec4 vLightData1;\r\nuniform vec4 vLightDiffuse1;\r\n#ifdef SHADOW1\r\n#if defined(SPOTLIGHT1) || defined(DIRLIGHT1)\r\nvarying vec4 vPositionFromLight1;\r\nuniform sampler2D shadowSampler1;\r\n#else\r\nuniform samplerCube shadowSampler1;\r\n#endif\r\nuniform vec3 shadowsInfo1;\r\n#endif\r\n#ifdef SPOTLIGHT1\r\nuniform vec4 vLightDirection1;\r\n#endif\r\n#ifdef HEMILIGHT1\r\nuniform vec3 vLightGround1;\r\n#endif\r\n#endif\r\n\r\n#ifdef LIGHT2\r\nuniform vec4 vLightData2;\r\nuniform vec4 vLightDiffuse2;\r\n#ifdef SHADOW2\r\n#if defined(SPOTLIGHT2) || defined(DIRLIGHT2)\r\nvarying vec4 vPositionFromLight2;\r\nuniform sampler2D shadowSampler2;\r\n#else\r\nuniform samplerCube shadowSampler2;\r\n#endif\r\nuniform vec3 shadowsInfo2;\r\n#endif\r\n#ifdef SPOTLIGHT2\r\nuniform vec4 vLightDirection2;\r\n#endif\r\n#ifdef HEMILIGHT2\r\nuniform vec3 vLightGround2;\r\n#endif\r\n#endif\r\n\r\n#ifdef LIGHT3\r\nuniform vec4 vLightData3;\r\nuniform vec4 vLightDiffuse3;\r\n#ifdef SHADOW3\r\n#if defined(SPOTLIGHT3) || defined(DIRLIGHT3)\r\nvarying vec4 vPositionFromLight3;\r\nuniform sampler2D shadowSampler3;\r\n#else\r\nuniform samplerCube shadowSampler3;\r\n#endif\r\nuniform vec3 shadowsInfo3;\r\n#endif\r\n#ifdef SPOTLIGHT3\r\nuniform vec4 vLightDirection3;\r\n#endif\r\n#ifdef HEMILIGHT3\r\nuniform vec3 vLightGround3;\r\n#endif\r\n#endif\r\n\r\n// Samplers\r\n#ifdef DIFFUSE\r\nvarying vec2 vDiffuseUV;\r\nuniform sampler2D diffuseSampler;\r\nuniform vec2 vDiffuseInfos;\r\n#endif\r\n\r\n// Shadows\r\n#ifdef SHADOWS\r\n\r\nfloat unpack(vec4 color)\r\n{\r\n	const vec4 bit_shift = vec4(1.0 / (255.0 * 255.0 * 255.0), 1.0 / (255.0 * 255.0), 1.0 / 255.0, 1.0);\r\n	return dot(color, bit_shift);\r\n}\r\n\r\n#if defined(POINTLIGHT0) || defined(POINTLIGHT1) || defined(POINTLIGHT2) || defined(POINTLIGHT3)\r\nuniform vec2 depthValues;\r\n\r\nfloat computeShadowCube(vec3 lightPosition, samplerCube shadowSampler, float darkness, float bias)\r\n{\r\n	vec3 directionToLight = vPositionW - lightPosition;\r\n	float depth = length(directionToLight);\r\n	\r\n	depth = clamp(depth, 0., 1.0);\r\n\r\n	directionToLight = normalize(directionToLight);\r\n	directionToLight.y = - directionToLight.y;\r\n\r\n	float shadow = unpack(textureCube(shadowSampler, directionToLight)) + bias;\r\n\r\n	if (depth > shadow)\r\n	{\r\n		return darkness;\r\n	}\r\n	return 1.0;\r\n}\r\n\r\nfloat computeShadowWithPCFCube(vec3 lightPosition, samplerCube shadowSampler, float bias, float darkness, float mapSize)\r\n{\r\n	vec3 directionToLight = vPositionW - lightPosition;\r\n	float depth = length(directionToLight);\r\n\r\n	depth = clamp(depth, 0., 1.0);\r\n	float diskScale = 2.0 / mapSize;\r\n\r\n	directionToLight = normalize(directionToLight);\r\n	directionToLight.y = -directionToLight.y;\r\n\r\n	float visibility = 1.;\r\n\r\n	vec3 poissonDisk[4];\r\n	poissonDisk[0] = vec3(-0.094201624, 0.04, -0.039906216);\r\n	poissonDisk[1] = vec3(0.094558609, -0.04, -0.076890725);\r\n	poissonDisk[2] = vec3(-0.094184101, 0.01, -0.092938870);\r\n	poissonDisk[3] = vec3(0.034495938, -0.01, 0.029387760);\r\n\r\n	// Poisson Sampling\r\n	float biasedDepth = depth - bias;\r\n\r\n	if (unpack(textureCube(shadowSampler, directionToLight + poissonDisk[0])) < biasedDepth) visibility -= 0.25;\r\n	if (unpack(textureCube(shadowSampler, directionToLight + poissonDisk[1])) < biasedDepth) visibility -= 0.25;\r\n	if (unpack(textureCube(shadowSampler, directionToLight + poissonDisk[2])) < biasedDepth) visibility -= 0.25;\r\n	if (unpack(textureCube(shadowSampler, directionToLight + poissonDisk[3])) < biasedDepth) visibility -= 0.25;\r\n\r\n	return  min(1.0, visibility + darkness);\r\n}\r\n#endif\r\n\r\n#if defined(SPOTLIGHT0) || defined(SPOTLIGHT1) || defined(SPOTLIGHT2) || defined(SPOTLIGHT3) ||  defined(DIRLIGHT0) || defined(DIRLIGHT1) || defined(DIRLIGHT2) || defined(DIRLIGHT3)\r\nfloat computeShadow(vec4 vPositionFromLight, sampler2D shadowSampler, float darkness, float bias)\r\n{\r\n	vec3 depth = vPositionFromLight.xyz / vPositionFromLight.w;\r\n	depth = 0.5 * depth + vec3(0.5);\r\n	vec2 uv = depth.xy;\r\n\r\n	if (uv.x < 0. || uv.x > 1.0 || uv.y < 0. || uv.y > 1.0)\r\n	{\r\n		return 1.0;\r\n	}\r\n\r\n	float shadow = unpack(texture2D(shadowSampler, uv)) + bias;\r\n\r\n	if (depth.z > shadow)\r\n	{\r\n		return darkness;\r\n	}\r\n	return 1.;\r\n}\r\n\r\nfloat computeShadowWithPCF(vec4 vPositionFromLight, sampler2D shadowSampler, float mapSize, float bias, float darkness)\r\n{\r\n	vec3 depth = vPositionFromLight.xyz / vPositionFromLight.w;\r\n	depth = 0.5 * depth + vec3(0.5);\r\n	vec2 uv = depth.xy;\r\n\r\n	if (uv.x < 0. || uv.x > 1.0 || uv.y < 0. || uv.y > 1.0)\r\n	{\r\n		return 1.0;\r\n	}\r\n\r\n	float visibility = 1.;\r\n\r\n	vec2 poissonDisk[4];\r\n	poissonDisk[0] = vec2(-0.94201624, -0.39906216);\r\n	poissonDisk[1] = vec2(0.94558609, -0.76890725);\r\n	poissonDisk[2] = vec2(-0.094184101, -0.92938870);\r\n	poissonDisk[3] = vec2(0.34495938, 0.29387760);\r\n\r\n	// Poisson Sampling\r\n	float biasedDepth = depth.z - bias;\r\n\r\n	if (unpack(texture2D(shadowSampler, uv + poissonDisk[0] / mapSize)) < biasedDepth) visibility -= 0.25;\r\n	if (unpack(texture2D(shadowSampler, uv + poissonDisk[1] / mapSize)) < biasedDepth) visibility -= 0.25;\r\n	if (unpack(texture2D(shadowSampler, uv + poissonDisk[2] / mapSize)) < biasedDepth) visibility -= 0.25;\r\n	if (unpack(texture2D(shadowSampler, uv + poissonDisk[3] / mapSize)) < biasedDepth) visibility -= 0.25;\r\n\r\n	return  min(1.0, visibility + darkness);\r\n}\r\n\r\n// Thanks to http://devmaster.net/\r\nfloat unpackHalf(vec2 color)\r\n{\r\n	return color.x + (color.y / 255.0);\r\n}\r\n\r\nfloat linstep(float low, float high, float v) {\r\n	return clamp((v - low) / (high - low), 0.0, 1.0);\r\n}\r\n\r\nfloat ChebychevInequality(vec2 moments, float compare, float bias)\r\n{\r\n	float p = smoothstep(compare - bias, compare, moments.x);\r\n	float variance = max(moments.y - moments.x * moments.x, 0.02);\r\n	float d = compare - moments.x;\r\n	float p_max = linstep(0.2, 1.0, variance / (variance + d * d));\r\n\r\n	return clamp(max(p, p_max), 0.0, 1.0);\r\n}\r\n\r\nfloat computeShadowWithVSM(vec4 vPositionFromLight, sampler2D shadowSampler, float bias, float darkness)\r\n{\r\n	vec3 depth = vPositionFromLight.xyz / vPositionFromLight.w;\r\n	depth = 0.5 * depth + vec3(0.5);\r\n	vec2 uv = depth.xy;\r\n\r\n	if (uv.x < 0. || uv.x > 1.0 || uv.y < 0. || uv.y > 1.0 || depth.z >= 1.0)\r\n	{\r\n		return 1.0;\r\n	}\r\n\r\n	vec4 texel = texture2D(shadowSampler, uv);\r\n\r\n	vec2 moments = vec2(unpackHalf(texel.xy), unpackHalf(texel.zw));\r\n	return min(1.0, 1.0 - ChebychevInequality(moments, depth.z, bias) + darkness);\r\n}\r\n#endif\r\n#endif\r\n\r\n\r\n#ifdef CLIPPLANE\r\nvarying float fClipDistance;\r\n#endif\r\n\r\n// Fog\r\n#ifdef FOG\r\n\r\n#define FOGMODE_NONE    0.\r\n#define FOGMODE_EXP     1.\r\n#define FOGMODE_EXP2    2.\r\n#define FOGMODE_LINEAR  3.\r\n#define E 2.71828\r\n\r\nuniform vec4 vFogInfos;\r\nuniform vec3 vFogColor;\r\nvarying float fFogDistance;\r\n\r\nfloat CalcFogFactor()\r\n{\r\n	float fogCoeff = 1.0;\r\n	float fogStart = vFogInfos.y;\r\n	float fogEnd = vFogInfos.z;\r\n	float fogDensity = vFogInfos.w;\r\n\r\n	if (FOGMODE_LINEAR == vFogInfos.x)\r\n	{\r\n		fogCoeff = (fogEnd - fFogDistance) / (fogEnd - fogStart);\r\n	}\r\n	else if (FOGMODE_EXP == vFogInfos.x)\r\n	{\r\n		fogCoeff = 1.0 / pow(E, fFogDistance * fogDensity);\r\n	}\r\n	else if (FOGMODE_EXP2 == vFogInfos.x)\r\n	{\r\n		fogCoeff = 1.0 / pow(E, fFogDistance * fFogDistance * fogDensity * fogDensity);\r\n	}\r\n\r\n	return clamp(fogCoeff, 0.0, 1.0);\r\n}\r\n#endif\r\n\r\n// Light Computing\r\nstruct lightingInfo\r\n{\r\n	vec3 diffuse;\r\n};\r\n\r\nlightingInfo computeLighting(vec3 viewDirectionW, vec3 vNormal, vec4 lightData, vec3 diffuseColor, float range) {\r\n	lightingInfo result;\r\n\r\n	vec3 lightVectorW;\r\n	float attenuation = 1.0;\r\n	if (lightData.w == 0.)\r\n	{\r\n		vec3 direction = lightData.xyz - vPositionW;\r\n\r\n		attenuation = max(0., 1.0 - length(direction) / range);\r\n		lightVectorW = normalize(direction);\r\n	}\r\n	else\r\n	{\r\n		lightVectorW = normalize(-lightData.xyz);\r\n	}\r\n\r\n	// diffuse\r\n	float ndl = max(0., dot(vNormal, lightVectorW));\r\n	result.diffuse = ndl * diffuseColor * attenuation;\r\n\r\n	return result;\r\n}\r\n\r\nlightingInfo computeSpotLighting(vec3 viewDirectionW, vec3 vNormal, vec4 lightData, vec4 lightDirection, vec3 diffuseColor, float range) {\r\n	lightingInfo result;\r\n\r\n	vec3 direction = lightData.xyz - vPositionW;\r\n	vec3 lightVectorW = normalize(direction);\r\n	float attenuation = max(0., 1.0 - length(direction) / range);\r\n\r\n	// diffuse\r\n	float cosAngle = max(0., dot(-lightDirection.xyz, lightVectorW));\r\n	float spotAtten = 0.0;\r\n\r\n	if (cosAngle >= lightDirection.w)\r\n	{\r\n		cosAngle = max(0., pow(cosAngle, lightData.w));\r\n		spotAtten = clamp((cosAngle - lightDirection.w) / (1. - cosAngle), 0.0, 1.0);\r\n\r\n		// Diffuse\r\n		float ndl = max(0., dot(vNormal, -lightDirection.xyz));\r\n		result.diffuse = ndl * spotAtten * diffuseColor * attenuation;\r\n\r\n		return result;\r\n	}\r\n\r\n	result.diffuse = vec3(0.);\r\n\r\n	return result;\r\n}\r\n\r\nlightingInfo computeHemisphericLighting(vec3 viewDirectionW, vec3 vNormal, vec4 lightData, vec3 diffuseColor, vec3 groundColor) {\r\n	lightingInfo result;\r\n\r\n	// Diffuse\r\n	float ndl = dot(vNormal, lightData.xyz) * 0.5 + 0.5;\r\n	result.diffuse = mix(groundColor, diffuseColor, ndl);\r\n\r\n	return result;\r\n}\r\n\r\nvoid main(void) {\r\n	// Clip plane\r\n#ifdef CLIPPLANE\r\n	if (fClipDistance > 0.0)\r\n		discard;\r\n#endif\r\n\r\n	vec3 viewDirectionW = normalize(vEyePosition - vPositionW);\r\n\r\n    float h = normalize(vPositionW).y + offset;\r\n    float mysmoothness = clamp(smoothness, 0.01, max(smoothness, 10.));\r\n\r\n    vec4 baseColor = mix(bottomColor, topColor, max(pow(max(h, 0.0), mysmoothness), 0.0));\r\n\r\n	// Base color\r\n	vec3 diffuseColor = vDiffuseColor.rgb;\r\n\r\n	// Alpha\r\n	float alpha = baseColor.a;\r\n\r\n\r\n#ifdef ALPHATEST\r\n	if (baseColor.a < 0.4)\r\n		discard;\r\n#endif\r\n\r\n#ifdef VERTEXCOLOR\r\n	baseColor.rgb *= vColor.rgb;\r\n#endif\r\n\r\n	// Bump\r\n#ifdef NORMAL\r\n	vec3 normalW = normalize(vNormalW);\r\n#else\r\n	vec3 normalW = vec3(1.0, 1.0, 1.0);\r\n#endif\r\n\r\n	// Lighting\r\n	vec3 diffuseBase = vec3(0., 0., 0.);\r\n	float shadow = 1.;\r\n\r\n#ifdef LIGHT0\r\n#ifdef SPOTLIGHT0\r\n	lightingInfo info = computeSpotLighting(viewDirectionW, normalW, vLightData0, vLightDirection0, vLightDiffuse0.rgb, vLightDiffuse0.a);\r\n#endif\r\n#ifdef HEMILIGHT0\r\n	lightingInfo info = computeHemisphericLighting(viewDirectionW, normalW, vLightData0, vLightDiffuse0.rgb, vLightGround0);\r\n#endif\r\n#if defined(POINTLIGHT0) || defined(DIRLIGHT0)\r\n	lightingInfo info = computeLighting(viewDirectionW, normalW, vLightData0, vLightDiffuse0.rgb, vLightDiffuse0.a);\r\n#endif\r\n#ifdef SHADOW0\r\n#ifdef SHADOWVSM0\r\n	shadow = computeShadowWithVSM(vPositionFromLight0, shadowSampler0, shadowsInfo0.z, shadowsInfo0.x);\r\n#else\r\n#ifdef SHADOWPCF0\r\n	#if defined(POINTLIGHT0)\r\n	shadow = computeShadowWithPCFCube(vLightData0.xyz, shadowSampler0, shadowsInfo0.z, shadowsInfo0.x, shadowsInfo0.y);\r\n	#else\r\n	shadow = computeShadowWithPCF(vPositionFromLight0, shadowSampler0, shadowsInfo0.y, shadowsInfo0.z, shadowsInfo0.x);\r\n	#endif\r\n#else\r\n	#if defined(POINTLIGHT0)\r\n	shadow = computeShadowCube(vLightData0.xyz, shadowSampler0, shadowsInfo0.x, shadowsInfo0.z);\r\n	#else\r\n	shadow = computeShadow(vPositionFromLight0, shadowSampler0, shadowsInfo0.x, shadowsInfo0.z);\r\n	#endif\r\n#endif\r\n#endif\r\n#else\r\n	shadow = 1.;\r\n#endif\r\n	diffuseBase += info.diffuse * shadow;\r\n#endif\r\n\r\n#ifdef LIGHT1\r\n#ifdef SPOTLIGHT1\r\n	info = computeSpotLighting(viewDirectionW, normalW, vLightData1, vLightDirection1, vLightDiffuse1.rgb, vLightDiffuse1.a);\r\n#endif\r\n#ifdef HEMILIGHT1\r\n	info = computeHemisphericLighting(viewDirectionW, normalW, vLightData1, vLightDiffuse1.rgb, vLightGround1.a);\r\n#endif\r\n#if defined(POINTLIGHT1) || defined(DIRLIGHT1)\r\n	info = computeLighting(viewDirectionW, normalW, vLightData1, vLightDiffuse1.rgb, vLightDiffuse1.a);\r\n#endif\r\n#ifdef SHADOW1\r\n#ifdef SHADOWVSM1\r\n	shadow = computeShadowWithVSM(vPositionFromLight1, shadowSampler1, shadowsInfo1.z, shadowsInfo1.x);\r\n#else\r\n#ifdef SHADOWPCF1\r\n#if defined(POINTLIGHT1)\r\n	shadow = computeShadowWithPCFCube(vLightData1.xyz, shadowSampler1, shadowsInfo1.z, shadowsInfo1.x, shadowsInfo1.y);\r\n#else\r\n	shadow = computeShadowWithPCF(vPositionFromLight1, shadowSampler1, shadowsInfo1.y, shadowsInfo1.z, shadowsInfo1.x);\r\n#endif\r\n#else\r\n	#if defined(POINTLIGHT1)\r\n	shadow = computeShadowCube(vLightData1.xyz, shadowSampler1, shadowsInfo1.x, shadowsInfo1.z);\r\n	#else\r\n	shadow = computeShadow(vPositionFromLight1, shadowSampler1, shadowsInfo1.x, shadowsInfo1.z);\r\n	#endif\r\n#endif\r\n#endif\r\n#else\r\n	shadow = 1.;\r\n#endif\r\n	diffuseBase += info.diffuse * shadow;\r\n#endif\r\n\r\n#ifdef LIGHT2\r\n#ifdef SPOTLIGHT2\r\n	info = computeSpotLighting(viewDirectionW, normalW, vLightData2, vLightDirection2, vLightDiffuse2.rgb, vLightDiffuse2.a);\r\n#endif\r\n#ifdef HEMILIGHT2\r\n	info = computeHemisphericLighting(viewDirectionW, normalW, vLightData2, vLightDiffuse2.rgb, vLightGround2);\r\n#endif\r\n#if defined(POINTLIGHT2) || defined(DIRLIGHT2)\r\n	info = computeLighting(viewDirectionW, normalW, vLightData2, vLightDiffuse2.rgb, vLightDiffuse2.a);\r\n#endif\r\n#ifdef SHADOW2\r\n#ifdef SHADOWVSM2\r\n	shadow = computeShadowWithVSM(vPositionFromLight2, shadowSampler2, shadowsInfo2.z, shadowsInfo2.x);\r\n#else\r\n#ifdef SHADOWPCF2\r\n#if defined(POINTLIGHT2)\r\n	shadow = computeShadowWithPCFCube(vLightData2.xyz, shadowSampler2, shadowsInfo2.z, shadowsInfo2.x, shadowsInfo2.y);\r\n#else\r\n	shadow = computeShadowWithPCF(vPositionFromLight2, shadowSampler2, shadowsInfo2.y, shadowsInfo2.z, shadowsInfo2.x);\r\n#endif\r\n#else\r\n	#if defined(POINTLIGHT2)\r\n	shadow = computeShadowCube(vLightData2.xyz, shadowSampler2, shadowsInfo2.x, shadowsInfo2.z);\r\n	#else\r\n	shadow = computeShadow(vPositionFromLight2, shadowSampler2, shadowsInfo2.x, shadowsInfo2.z);\r\n	#endif\r\n#endif	\r\n#endif	\r\n#else\r\n	shadow = 1.;\r\n#endif\r\n	diffuseBase += info.diffuse * shadow;\r\n#endif\r\n\r\n#ifdef LIGHT3\r\n#ifdef SPOTLIGHT3\r\n	info = computeSpotLighting(viewDirectionW, normalW, vLightData3, vLightDirection3, vLightDiffuse3.rgb, vLightDiffuse3.a);\r\n#endif\r\n#ifdef HEMILIGHT3\r\n	info = computeHemisphericLighting(viewDirectionW, normalW, vLightData3, vLightDiffuse3.rgb, vLightGround3);\r\n#endif\r\n#if defined(POINTLIGHT3) || defined(DIRLIGHT3)\r\n	info = computeLighting(viewDirectionW, normalW, vLightData3, vLightDiffuse3.rgb, vLightDiffuse3.a);\r\n#endif\r\n#ifdef SHADOW3\r\n#ifdef SHADOWVSM3\r\n		shadow = computeShadowWithVSM(vPositionFromLight3, shadowSampler3, shadowsInfo3.z, shadowsInfo3.x);\r\n#else\r\n#ifdef SHADOWPCF3\r\n#if defined(POINTLIGHT3)\r\n	shadow = computeShadowWithPCFCube(vLightData3.xyz, shadowSampler3, shadowsInfo3.z, shadowsInfo3.x, shadowsInfo3.y);\r\n#else\r\n	shadow = computeShadowWithPCF(vPositionFromLight3, shadowSampler3, shadowsInfo3.y, shadowsInfo3.z, shadowsInfo3.x);\r\n#endif\r\n#else\r\n	#if defined(POINTLIGHT3)\r\n	shadow = computeShadowCube(vLightData3.xyz, shadowSampler3, shadowsInfo3.x, shadowsInfo3.z);\r\n	#else\r\n	shadow = computeShadow(vPositionFromLight3, shadowSampler3, shadowsInfo3.x, shadowsInfo3.z);\r\n	#endif\r\n#endif	\r\n#endif	\r\n#else\r\n	shadow = 1.;\r\n#endif\r\n	diffuseBase += info.diffuse * shadow;\r\n#endif\r\n\r\n#ifdef VERTEXALPHA\r\n	alpha *= vColor.a;\r\n#endif\r\n\r\n	vec3 finalDiffuse = clamp(diffuseBase * diffuseColor, 0.0, 1.0) * baseColor.rgb;\r\n\r\n	// Composition\r\n	vec4 color = vec4(finalDiffuse, alpha);\r\n\r\n#ifdef FOG\r\n	float fog = CalcFogFactor();\r\n	color.rgb = fog * color.rgb + (1.0 - fog) * vFogColor;\r\n#endif\r\n\r\n	gl_FragColor = color;\r\n}";