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').concat(m.getError(),"."));m.bindTexture(m.TEXTURE_2D,y),m.texParameteri(m.TEXTURE_2D,m.TEXTURE_WRAP_S,f),m.texParameteri(m.TEXTURE_2D,m.TEXTURE_WRAP_T,p),m.texParameteri(m.TEXTURE_2D,m.TEXTURE_MIN_FILTER,l),m.texParameteri(m.TEXTURE_2D,m.TEXTURE_MAG_FILTER,l),m.texImage2D(m.TEXTURE_2D,0,a,_,h,0,c,u,v),this._buffers.push(y)}m.bindTexture(m.TEXTURE_2D,null),m.bindFramebuffer(m.FRAMEBUFFER,null)},Object.defineProperty(t.prototype,"bufferIndex",{get:function(){return this._bufferIndex},enumerable:!1,configurable:!0}),t.prototype.incrementBufferIndex=function(){var t=this.numBuffers;1!==t&&(this._bufferIndex=(this.bufferIndex+1)%t)},t.prototype.decrementBufferIndex=function(){var t=this.numBuffers;1!==t&&(this._bufferIndex=(this.bufferIndex-1+t)%t)},Object.defineProperty(t.prototype,"currentState",{get:function(){return this.getStateAtIndex(this.bufferIndex)},enumerable:!1,configurable:!0}),Object.defineProperty(t.prototype,"_currentTexture",{get:function(){var t=this,e=t._buffers,n=t._bufferIndex,r=t._textureOverrides;return r&&r[n]?r[n]:e[n]},enumerable:!1,configurable:!0}),Object.defineProperty(t.prototype,"lastState",{get:function(){if(1===this.numBuffers)throw new Error('Cannot access lastState on GPULayer "'.concat(this.name,'" with only one buffer.'));return this.getStateAtIndex((this.bufferIndex-1+this.numBuffers)%this.numBuffers)},enumerable:!1,configurable:!0}),t.prototype.getStateAtIndex=function(t){var e=this,n=e.numBuffers,r=e._textureOverrides,o=e._buffers;t<0&&t>-n&&(t+=n),(t<0||t>=n)&&(console.warn("Out of range buffer index: ".concat(t,' for GPULayer "').concat(this.name,'" with $.numBuffers} buffer').concat(n>1?"s":"",".  Was this intentional?")),t<0?t+=n*Math.ceil(Math.abs(t)/n):t%=n);var i=o[t];return r&&r[t]&&(i=r[t]),{texture:i,layer:this}},t.prototype._prepareForWrite=function(t){t&&this.incrementBufferIndex(),this._textureOverrides&&(this._textureOverrides[this.bufferIndex]=void 0)},t.prototype.setFromArray=function(e){var n=this,r=n._composer,o=n._glInternalFormat,i=n._glFormat,a=n._glType,c=n.width,s=n.height,u=n._currentTexture,l=r.gl,f=t.validateGPULayerArray(e,this);l.bindTexture(l.TEXTURE_2D,u),l.texImage2D(l.TEXTURE_2D,0,o,c,s,0,i,a,f),l.bindTexture(l.TEXTURE_2D,null)},t.prototype.resize=function(e,n){var r=this.name,o=this._composer.verboseLogging;o&&console.log('Resizing GPULayer "'.concat(r,'" to ').concat(JSON.stringify(e),"."));var i=t.calcGPULayerSize(e,r,o),a=i.length,c=i.width,s=i.height;this._length=a,this._width=c,this._height=s,this._destroyBuffers(),this._initBuffers(n)},Object.defineProperty(t.prototype,"clearValue",{get:function(){return this._clearValue},set:function(t){var e=this.numComponents,n=this.type;if(!ni(t,e,n))throw new Error("Invalid clearValue: ".concat(JSON.stringify(t),' for GPULayer "').concat(this.name,'", expected ').concat(n," or array of ").concat(n," of length ").concat(e,"."));this._clearValue=s.isArray(t)?t.slice():t,this._clearValueVec4=void 0},enumerable:!1,configurable:!0}),Object.defineProperty(t.prototype,"clearValueVec4",{get:function(){var t=this._clearValueVec4;if(!t){var e=this.clearValue;if(t=[],s.isFiniteNumber(e))t.push(e,e,e,e);else{t.push.apply(t,e);for(var n=t.length;n<4;n++)t.push(0)}this._clearValueVec4=t}return t},enumerable:!1,configurable:!0}),t.prototype.clear=function(t){void 0===t&&(t=!1);var e=this,n=e.name,r=e._composer,o=e.clearValueVec4,i=e.numBuffers,a=e.type;r.verboseLogging&&console.log('Clearing GPULayer "'.concat(n,'".'));var c=r._setValueProgramForType(a);c.setUniform("u_value",o),this.decrementBufferIndex();for(var s=t?i:1,u=0;u<s;u++)r.step({program:c,output:this});t&&this.incrementBufferIndex()},t.prototype._getValuesSetup=function(){var t=this,e=t.width,n=t.height,r=t._composer,o=t._currentTexture,i=this._valuesRaw,a=r.gl;ui(r,this,o);var c=this,s=c._glNumChannels,v=c._glType,g=c._glFormat,y=c._internalType;switch(y){case u:void 0!==a.FLOAT?(s=4,g=a.RGBA,v=a.FLOAT,i=i||new Float32Array(e*n*s)):i=i||new Uint16Array(e*n*s);break;case l:s=4,g=a.RGBA,i=i||new Float32Array(e*n*s);break;case f:case _:s=4,g=a.RGBA_INTEGER,v=a.UNSIGNED_INT,i=i||new Uint32Array(e*n*s);break;case m:s=4,g=a.RGBA_INTEGER,i=i||new Uint32Array(e*n*s);break;case p:case h:s=4,g=a.RGBA_INTEGER,v=a.INT,i=i||new Int32Array(e*n*s);break;case d:s=4,g=a.RGBA_INTEGER,i=i||new Int32Array(e*n*s);break;default:throw new Error("Unsupported internalType ".concat(y," for getValues()."))}if(this._valuesRaw=i,Ye(a))return{_glFormat:g,_glType:v,_valuesRaw:i,_glNumChannels:s,_internalType:y};throw new Error("Unable to read values from Buffer with status: ".concat(a.checkFramebufferStatus(a.FRAMEBUFFER),"."))},t.prototype._getValuesPost=function(e,n,r){var o=this,i=o.width,a=o.height,c=o.numComponents,s=o.type,l=(this._length?this._length:i*a)*c,f=r===u&&e.constructor===Uint16Array,p=this._valuesBufferView;f&&!p&&(p=new DataView(e.buffer),this._valuesBufferView=p),e.length===l&&Gt(s,!0)===e.constructor?this._values=e:this._values||(this._values=t.initArrayForType(s,l,!0));var _=this._values;if(p||_!==e||c!==n)for(var h=0,m=i*a;h<m;h++){var d=h*n,v=h*c;if(v>=l)break;for(var g=0;g<c;g++)_[v+g]=p?zo(p,2*(d+g),!0):e[d+g]}return _},t.prototype.getValues=function(){var t=this,e=t.width,n=t.height,r=t._composer.gl,o=this._getValuesSetup(),i=o._glFormat,a=o._glType,c=o._valuesRaw,s=o._glNumChannels,u=o._internalType;return r.readPixels(0,0,e,n,i,a,c),this._getValuesPost(c,s,u)},t.prototype.getValuesAsync=function(){return r(this,void 0,void 0,(function(){var t,e,n,r,i,a,c,s,u,l,f;return o(this,(function(o){switch(o.label){case 0:return e=(t=this).width,n=t.height,r=t._composer,i=r.gl,r.isWebGL2?(a=this._getValuesSetup(),c=a._glFormat,s=a._glType,u=a._valuesRaw,l=a._glNumChannels,f=a._internalType,[4,sn(i,0,0,e,n,c,s,u)]):[2,this.getValues()];case 1:return o.sent(),[2,this._getValuesPost(u,l,f)]}}))}))},t.prototype._getCanvasWithImageData=function(t){var e=this.getValues(),n=this,r=n.width,o=n.height,i=n.numComponents,a=n.type;t=t||(a===l||a===u?255:1);var c=document.createElement("canvas");c.width=r,c.height=o;for(var s=c.getContext("2d"),f=s.getImageData(0,0,r,o),p=f.data,_=0;_<o;_++)for(var h=0;h<r;h++){for(var m=_*r+h,d=(o-1-_)*r+h,v=0;v<i;v++)p[4*d+v]=e[i*m+v]*t;1===i&&(p[4*d+1]=p[4*d],p[4*d+2]=p[4*d]),i<4&&(p[4*d+3]=255)}return s.putImageData(f,0,0),c},t.prototype.getImage=function(t){if(t){oi(Object.keys(t),["multiplier"],"GPULayer.getImage(params)")}var e=this._getCanvasWithImageData(t&&t.multiplier),n=new Image;return n.src=e.toDataURL(),n},t.prototype.savePNG=function(t){void 0===t&&(t={});oi(Object.keys(t),["filename","dpi","multiplier","callback"],"GPULayer.savePNG(params)");var e=this.name,n=t.callback||Ko.saveAs,r=t.filename||e;this._getCanvasWithImageData(t.multiplier).toBlob((function(o){o?t.dpi?ln(o,t.dpi).then((function(t){n(t,"".concat(r,".png"))})):n(o,"".concat(r,".png")):console.warn('Problem saving PNG from GPULayer "'.concat(e,'", unable to init blob.'))}),"image/png")},t.prototype.attachToThreeTexture=function(t){var e=this,n=e._composer,r=e.numBuffers,o=e.currentState,i=e.name,a=n._threeRenderer,c=n.gl;if(!a)throw new Error("GPUComposer was not inited with a renderer.");if(r>1)throw new Error('GPULayer "'.concat(i,'" contains multiple WebGL textures (one for each buffer) that are flip-flopped during compute cycles, please choose a GPULayer with one buffer.  You can copy the current state of this GPULayer to a single buffer GPULayer during your render loop.'));var s=a.properties.get(t);c.deleteTexture(s.__webglTexture),s.__webglTexture=o.texture,s.__webglInit=!0},t.prototype._destroyBuffers=function(){var t=this._composer,e=this._buffers,n=t.gl;e.forEach((function(t){n.deleteTexture(t),function(t,e){t.bindFramebuffer(t.FRAMEBUFFER,null);var n=si.get(e);if(n)for(var r=0,o=n.length;r<o;r++)t.deleteFramebuffer(n[r]);si.delete(e)}(n,t)})),e.length=0,delete this._textureOverrides},t.prototype.clone=function(t){return this._composer._cloneGPULayer(this,t)},t.prototype.dispose=function(){var t=this.name,e=this._composer,n=e.gl;if(e.verboseLogging&&console.log('Deallocating GPULayer "'.concat(t,'".')),!n)throw new Error("Must call dispose() on all GPULayers before calling dispose() on GPUComposer.");this._destroyBuffers(),delete this._buffers,delete this._composer,this._values&&delete this._values,this._valuesRaw&&delete this._valuesRaw},t}(),fi="OES_texture_float",pi="OES_texture_half_float",_i="OES_texture_float_linear",hi="OES_texture_half_float_linear",mi="EXT_color_buffer_float",di="EXT_color_buffer_half_float",vi="OES_vertex_array_object",gi="OES_element_index_uint",yi="OES_standard_derivatives";function bi(t,e,n){if(void 0===n&&(n=!1),void 0!==t._extensions[e])return t._extensions[e];var r,o=t.gl,i=t._errorCallback,a=t._extensions;t.verboseLogging;try{r=o.getExtension(e)}catch(t){}return r?(a[e]=r,t.verboseLogging&&console.log("Loaded extension: ".concat(e,"."))):(a[e]=!1,t.verboseLogging&&console.log("Unsupported ".concat(n?"optional ":"","extension: ").concat(e,"."))),r||n||i("Required extension unsupported by this device / browser: ".concat(e,".")),r}var wi=Object.freeze({__proto__:null,EXT_COLOR_BUFFER_FLOAT:mi,EXT_COLOR_BUFFER_HALF_FLOAT:di,OES_ELEMENT_INDEX_UINT:gi,OES_STANDARD_DERIVATIVES:yi,OES_TEXTURE_FLOAT:fi,OES_TEXTURE_FLOAT_LINEAR:_i,OES_TEXTURE_HALF_FLOAT:pi,OES_TEXTURE_HAlF_FLOAT_LINEAR:hi,OES_VERTEX_ARRAY_OBJECT:vi,WEBGL_DEPTH_TEXTURE:"WEBGL_depth_texture",getExtension:bi}),Ei={writeSupport:{},filterWrapSupport:{}};function Pi(t,e){var n=t.glslVersion,r=t.isWebGL2;return(n!==O||!r)&&(e===f||e===p||e===h||e===d||e===_||e===m)}function xi(t,e){var n=t.gl,r=t.glslVersion,o=t.isWebGL2,i="".concat(o,",").concat(e,",").concat(r===O?"3":"1");if(void 0!==Ei.writeSupport[i])return Ei.writeSupport[i];var a=n.createTexture();if(!a)return Ei.writeSupport[i]=!1,Ei.writeSupport[i];n.bindTexture(n.TEXTURE_2D,a);var c=n[w],s=n[y];n.texParameteri(n.TEXTURE_2D,n.TEXTURE_WRAP_S,c),n.texParameteri(n.TEXTURE_2D,n.TEXTURE_WRAP_T,c),n.texParameteri(n.TEXTURE_2D,n.TEXTURE_MIN_FILTER,s),n.texParameteri(n.TEXTURE_2D,n.TEXTURE_MAG_FILTER,s);var u=li.getGLTextureParameters({composer:t,name:"testWriteSupport",numComponents:1,internalType:e}),l=u.glInternalFormat,f=u.glFormat,p=u.glType;n.texImage2D(n.TEXTURE_2D,0,l,10,10,0,f,p,null);var _=n.createFramebuffer();if(!_)return n.deleteTexture(a),Ei.writeSupport[i]=!1,Ei.writeSupport[i];n.bindFramebuffer(n.FRAMEBUFFER,_),n.framebufferTexture2D(n.FRAMEBUFFER,n.COLOR_ATTACHMENT0,n.TEXTURE_2D,a,0);var h=n.checkFramebufferStatus(n.FRAMEBUFFER)===n.FRAMEBUFFER_COMPLETE;return n.deleteTexture(a),n.deleteFramebuffer(_),Ei.writeSupport[i]=h,Ei.writeSupport[i]}function Ai(t,e,n,r){var o,i=t.gl,a=t.glslVersion,c=t.intPrecision,s=t.floatPrecision,l=t._errorCallback,f=t.isWebGL2,p="".concat(f,",").concat(e,",").concat(n,",").concat(r,",").concat(a===O?"3":"1");if(void 0!==Ei.filterWrapSupport[p])return Ei.filterWrapSupport[p];var _=i.createTexture();if(!_)return Ei.filterWrapSupport[p]=!1,Ei.filterWrapSupport[p];i.bindTexture(i.TEXTURE_2D,_);var h=i[r],m=i[n];i.texParameteri(i.TEXTURE_2D,i.TEXTURE_WRAP_S,h),i.texParameteri(i.TEXTURE_2D,i.TEXTURE_WRAP_T,h),i.texParameteri(i.TEXTURE_2D,i.TEXTURE_MIN_FILTER,m),i.texParameteri(i.TEXTURE_2D,i.TEXTURE_MAG_FILTER,m);for(var d=li.getGLTextureParameters({composer:t,name:"testFilterWrap",numComponents:1,internalType:e}),v=d.glInternalFormat,g=d.glFormat,E=d.glType,P=d.glNumChannels,x=[3,56.5,834,-53.6,.003,96.2,23,90.2,32],A=li.initArrayForType(e,x.length*P,!0),U=0;U<x.length;U++)A[U*P]=x[U],x[U]=A[U*P];if(e===u){var T=new Uint16Array(A.length),I=new DataView(T.buffer);for(U=0;U<A.length;U++)Jo(I,2*U,A[U],!0);A=T}i.texImage2D(i.TEXTURE_2D,0,v,3,3,0,g,E,A);var R=new li(t,{name:"testFloatLinearFiltering-output",type:e,numComponents:1,dimensions:[3,3],wrapX:w,wrapY:w,filter:y}),S=n===b?.5:1,L="testFilterWrap-program",F="\nin vec2 v_uv;\nuniform vec2 u_offset;\n#ifdef GPUIO_INT\n\tuniform isampler2D u_input;\n\tout int out_result;\n#endif\n#ifdef GPUIO_UINT\n\tuniform usampler2D u_input;\n\tout uint out_result;\n#endif\n#ifdef GPUIO_FLOAT\n\tuniform sampler2D u_input;\n\tout float out_result;\n#endif\nvoid main() {\n\tout_result = texture(u_input, v_uv + offset).x;\n}";a!==O&&(F=tn(F,L)[0]);var N=je(i,a,c,s,F,i.FRAGMENT_SHADER,L,l,((o={offset:"vec2(".concat(S/3,", ").concat(S/3,")")})[Ve(e)?"GPUIO_UINT":Me(e)?"GPUIO_INT":"GPUIO_FLOAT"]="1",o),void 0,!0);function G(t,e){return r===w?Math.max(0,Math.min(e-1,t)):(t+e)%e}var C=t._getVertexShader(et,"",{},L);if(C&&N){var B=Xe(i,C,N,L,l);if(B){R._prepareForWrite(!1),ui(t,R,R._currentTexture),i.viewport(0,0,3,3),i.useProgram(B),i.activeTexture(i.TEXTURE0),i.bindTexture(i.TEXTURE_2D,_),i.uniform2fv(i.getUniformLocation(B,"u_gpuio_scale"),[1,1]),i.uniform2fv(i.getUniformLocation(B,"u_gpuio_translation"),[0,0]),i.bindBuffer(i.ARRAY_BUFFER,t._getQuadPositionsBuffer()),t._setPositionAttribute(B,L),i.drawArrays(i.TRIANGLE_STRIP,0,4),i.disable(i.BLEND);for(var V=R.getValues(),D=!0,M=Me(e)?0:e===u?.01:1e-4,k=0;k<3;k++)for(var W=0;W<3;W++){var j=void 0;if(n===b)j=(x[3*W+k]+x[3*W+G(k+1,3)]+x[3*G(W+1,3)+k]+x[3*G(W+1,3)+G(k+1,3)])/4;else{var X=G(k+S,3);j=x[3*G(W+S,3)+X]}U=3*W+k;if(Math.abs((j-V[U])/j)>M){D=!1;break}}Ei.filterWrapSupport[p]=D,i.deleteProgram(B)}else Ei.filterWrapSupport[p]=!1;i.deleteShader(N)}else Ei.filterWrapSupport[p]=!1;return R.dispose(),i.deleteTexture(_),Ei.filterWrapSupport[p]}function Ui(t){var e=-1/0,n=1/0;switch(t){case f:e=ht,n=mt;break;case p:e=dt,n=vt;break;case _:e=gt,n=yt;break;case h:e=bt,n=wt;break;case m:e=Et,n=Pt;break;case d:e=xt,n=At}return{min:e,max:n}}li.initArrayForType=function(t,e,n){return void 0===n&&(n=!1),new(Gt(t,n))(e)},li.calcGPULayerSize=function(t,e,n){if(s.isNumber(t)){if(!s.isPositiveInteger(t))throw new Error("Invalid length: ".concat(JSON.stringify(t),' for GPULayer "').concat(e,'", must be positive integer.'));var r=t,o=Math.ceil(Math.sqrt(r)),i=Math.ceil(r/o);return n&&console.log("Using [".concat(o,", ").concat(i,"] for 1D array of length ").concat(t,' in GPULayer "').concat(e,'".')),{width:o,height:i,length:r}}var a=t[0];if(!s.isPositiveInteger(a))throw new Error("Invalid width: ".concat(JSON.stringify(a),' for GPULayer "').concat(e,'", must be positive integer.'));var c=t[1];if(!s.isPositiveInteger(c))throw new Error("Invalid height: ".concat(JSON.stringify(c),' for GPULayer "').concat(e,'", must be positive integer.'));return{width:a,height:c}},li.getGPULayerInternalWrap=function(t){var e=t.composer,n=t.wrap,r=t.internalFilter,o=t.internalType;return n===w||Ai(e,o,r,n)?n:w},li.getGPULayerInternalFilter=function(t){var e=t.filter;if(e===y)return e;var n=t.composer,r=t.internalType,o=t.wrapX,i=t.wrapY,a=t.name;r===u&&((bi(n,hi,!0)||bi(n,_i,!0))&&Ai(n,r,e,o)&&Ai(n,r,e,i)||(console.warn("This browser does not support ".concat(e," filtering for type ").concat(r," and wrap [").concat(o,", ").concat(i,'].  Falling back to NEAREST filter for GPULayer "').concat(a,'" with ').concat(e," polyfill in fragment shader.")),e=y));r===l&&(bi(n,_i,!0)&&Ai(n,r,e,o)&&Ai(n,r,e,i)||(console.warn("This browser does not support ".concat(e," filtering for type ").concat(r," and wrap [").concat(o,", ").concat(i,'].  Falling back to NEAREST filter for GPULayer "').concat(a,'" with ').concat(e," polyfill in fragment shader.")),e=y));return e},li.getGLTextureParameters=function(t){var e,n,r,o,i=t.composer,a=t.name,c=t.numComponents,s=t.internalType,v=i.gl,g=i.glslVersion;if(i.isWebGL2){if(o=c,3===c&&(o=4),s===l||s===u)switch(o){case 1:n=v.RED;break;case 2:n=v.RG;break;case 4:n=v.RGBA;break;default:throw new Error("Unsupported glNumChannels: ".concat(o,' for GPULayer "').concat(a,'".'))}else switch(o){case 1:n=v.RED_INTEGER;break;case 2:n=v.RG_INTEGER;break;case 4:n=v.RGBA_INTEGER;break;default:throw new Error("Unsupported glNumChannels: ".concat(o,' for GPULayer "').concat(a,'".'))}switch(s){case u:switch(e=v.HALF_FLOAT,o){case 1:r=v.R16F;break;case 2:r=v.RG16F;break;case 4:r=v.RGBA16F;break;default:throw new Error("Unsupported glNumChannels: ".concat(o,' for GPULayer "').concat(a,'".'))}break;case l:switch(e=v.FLOAT,o){case 1:r=v.R32F;break;case 2:r=v.RG32F;break;case 4:r=v.RGBA32F;break;default:throw new Error("Unsupported glNumChannels: ".concat(o,' for GPULayer "').concat(a,'".'))}break;case f:if(e=v.UNSIGNED_BYTE,g===S&&s===f)r=n;else switch(o){case 1:r=v.R8UI;break;case 2:r=v.RG8UI;break;case 4:r=v.RGBA8UI;break;default:throw new Error("Unsupported glNumChannels: ".concat(o,' for GPULayer "').concat(a,'".'))}break;case p:switch(e=v.BYTE,o){case 1:r=v.R8I;break;case 2:r=v.RG8I;break;case 4:r=v.RGBA8I;break;default:throw new Error("Unsupported glNumChannels: ".concat(o,' for GPULayer "').concat(a,'".'))}break;case h:switch(e=v.SHORT,o){case 1:r=v.R16I;break;case 2:r=v.RG16I;break;case 4:r=v.RGBA16I;break;default:throw new Error("Unsupported glNumChannels: ".concat(o,' for GPULayer "').concat(a,'".'))}break;case _:switch(e=v.UNSIGNED_SHORT,o){case 1:r=v.R16UI;break;case 2:r=v.RG16UI;break;case 4:r=v.RGBA16UI;break;default:throw new Error("Unsupported glNumChannels: ".concat(o,' for GPULayer "').concat(a,'".'))}break;case d:switch(e=v.INT,o){case 1:r=v.R32I;break;case 2:r=v.RG32I;break;case 4:r=v.RGBA32I;break;default:throw new Error("Unsupported glNumChannels: ".concat(o,' for GPULayer "').concat(a,'".'))}break;case m:switch(e=v.UNSIGNED_INT,o){case 1:r=v.R32UI;break;case 2:r=v.RG32UI;break;case 4:r=v.RGBA32UI;break;default:throw new Error("Unsupported glNumChannels: ".concat(o,' for GPULayer "').concat(a,'".'))}break;default:throw new Error('Unsupported type: "'.concat(s,'" for GPULayer "').concat(a,'".'))}}else{if(c<1||c>4)throw new Error("Unsupported numComponents: ".concat(c,' for GPULayer "').concat(a,'".'));switch(o=4,n=v.RGBA,r=v.RGBA,s){case l:e=v.FLOAT;break;case u:e=v.HALF_FLOAT||bi(i,pi).HALF_FLOAT_OES;break;default:throw new Error('Unsupported type: "'.concat(s,'" in WebGL 1.0 for GPULayer "').concat(a,'".'))}}if(void 0===e||void 0===n||void 0===r){var y=[];throw void 0===e&&y.push("glType"),void 0===n&&y.push("glFormat"),void 0===r&&y.push("glInternalFormat"),new Error("Invalid type: ".concat(s," for numComponents: ").concat(c,", unable to init parameter").concat(y.length>1?"s":""," ").concat(y.join(", "),' for GPULayer "').concat(a,'".'))}if(void 0===o||c<1||c>4||o<c)throw new Error("Invalid numChannels: ".concat(o," for numComponents: ").concat(c,' for GPULayer "').concat(a,'".'));return{glFormat:n,glInternalFormat:r,glType:e,glNumChannels:o}},li.getGPULayerInternalType=function(t){var e=t.composer,n=t.name,r=e._errorCallback,o=e.isWebGL2,i=t.type,a=i;if(Pi(e,i)&&(a===f||a===p?a=u:(console.warn("Falling back ".concat(a,' type to FLOAT type for glsl1.x support for GPULayer "').concat(n,'".\nLarge UNSIGNED_INT or INT with absolute value > 16,777,216 are not supported, on mobile UNSIGNED_INT, INT, UNSIGNED_SHORT, and SHORT with absolute value > 2,048 may not be supported.')),a=l)),o){if(a===l)if(bi(e,mi,!0))xi(e,a)||(console.warn('FLOAT not supported for writing operations in this browser, falling back to HALF_FLOAT type for GPULayer "'.concat(n,'".')),a=u);else console.warn('FLOAT not supported in this browser, falling back to HALF_FLOAT type for GPULayer "'.concat(n,'".')),a=u;if(a===u)bi(e,di,!0)||bi(e,mi,!0),xi(e,a)||(console.warn("This browser does not support writing to HALF_FLOAT textures."),r("This browser does not support writing to HALF_FLOAT textures."))}else{if(a===l)if(bi(e,fi,!0))xi(e,a)||(console.warn('FLOAT not supported for writing operations in this browser, falling back to HALF_FLOAT type for GPULayer "'.concat(n,'".')),a=u);else console.warn('FLOAT not supported in this browser, falling back to HALF_FLOAT type for GPULayer "'.concat(n,'".')),a=u;if(a===u)bi(e,pi,!0),xi(e,a)||console.warn("This browser does not support writing to HALF_FLOAT textures.")}return a},li.validateGPULayerArray=function(t,e){var n=e.numComponents,r=e.width,o=e.height,i=e.name,a=e._glNumChannels,c=e._internalType,s=e.is1D()?e.length:null;if(t.length!==r*o*n&&(!s||s&&t.length!==s*n))throw new Error("Invalid data length: ".concat(t.length,' for GPULayer "').concat(i,'" of ').concat(s?"length ".concat(s," and "):"","dimensions: [").concat(r,", ").concat(o,"] and numComponents: ").concat(n,"."));var v=!1;switch(t.constructor){case Array:v=!0;break;case Float32Array:v=c!==l;break;case Uint8Array:v=c!==f;break;case Int8Array:v=c!==p;break;case Uint16Array:v=c!==_;break;case Int16Array:v=c!==h;break;case Uint32Array:v=c!==m;break;case Int32Array:v=c!==d;break;default:throw new Error("Invalid array type: ".concat(t.constructor.name,' for GPULayer "').concat(i,'", please use one of [').concat(P.map((function(t){return t.name})).join(", "),"]."))}var g=Ui(c),y=g.min,b=g.max,w=r*o*a,E=t.length!==w,x=t;if(v||E){x=li.initArrayForType(c,w);for(var A=c===u&&v?new DataView(x.buffer):null,U=0,T=t.length/n;U<T;U++)for(var I=0;I<n;I++){var R=t[U*n+I],O=R,S=!1;O<y?(O=y,S=!0):O>b&&(O=b,S=!0),S&&console.warn("Clipping out of range value ".concat(R," to ").concat(O,' for GPULayer "').concat(i,'" with internal type ').concat(c,"."));var L=U*a+I;A?Jo(A,2*L,O,!0):x[L]=O}}return x};var Ti=Object.freeze({__proto__:null,minMaxValuesForType:Ui,shouldCastIntTypeAsFloat:Pi,testFilterWrap:Ai,testWriteSupport:xi}),Ii=function(){function t(t,e,n,r){void 0===t&&(t=0),void 0===e&&(e=0),void 0===n&&(n=0),void 0===r&&(r=1),this.x=t,this.y=e,this.z=n,this.w=r}return Object.defineProperty(t.prototype,"width",{get:function(){return this.z},enumerable:!1,configurable:!0}),Object.defineProperty(t.prototype,"height",{get:function(){return this.w},enumerable:!1,configurable:!0}),t.prototype.copy=function(t){return this.x=t.x,this.y=t.y,this.z=t.z,this.w=t.w,this},t}(),Ri="\nin vec2 a_gpuio_position;\n#ifdef ".concat(lt,"\n\tin vec2 a_gpuio_uv;\n#endif\n#ifdef ").concat(ft,"\n\tin vec2 a_gpuio_normal;\n#endif\n\nuniform vec2 u_gpuio_scale;\nuniform vec2 u_gpuio_translation;\n\nout vec2 v_uv;\nout vec2 v_uv_local;\n#ifdef ").concat(ft,"\n\tout vec2 v_normal;\n#endif\n\nvoid main() {\n\t// Optional varyings.\n\t#ifdef ").concat(lt,"\n\t\tv_uv_local = a_gpuio_uv;\n\t#else\n\t\tv_uv_local = 0.5 * (a_gpuio_position + 1.0);\n\t#endif\n\t#ifdef ").concat(ft,"\n\t\tv_normal = a_gpuio_normal;\n\t#endif\n\n\t// Apply transformations.\n\tvec2 position = u_gpuio_scale * a_gpuio_position + u_gpuio_translation;\n\n\t// Calculate a global uv for the viewport.\n\tv_uv = 0.5 * (position + 1.0);\n\n\t// Calculate vertex position.\n\tgl_Position = vec4(position, 0, 1);\n}"),Oi='\n/**\n * Create UV coordinates from a 1D index for data stored in a texture of size "dimensions".\n */\nvec2 uvFromIndex(const float index, const vec2 dimensions) {\n\tfloat y = floor((index + 0.5) / dimensions.x);\n\tfloat x = floor(index - y * dimensions.x + 0.5);\n\treturn vec2(x + 0.5, y + 0.5) / dimensions;\n}\nvec2 uvFromIndex(const int index, const vec2 dimensions) {\n\tint width = int(dimensions.x);\n\tint y = index / width;\n\tint x = index - y * width;\n\treturn vec2(float(x) + 0.5, float(y) + 0.5) / dimensions;\n}\nvec2 uvFromIndex(const float index, const ivec2 dimensions) {\n\tfloat width = float(dimensions.x);\n\tfloat y = floor((index + 0.5) / width);\n\tfloat x = floor(index - y * width + 0.5);\n\treturn vec2(x + 0.5, y + 0.5) / vec2(dimensions);\n}\nvec2 uvFromIndex(const int index, const ivec2 dimensions) {\n\tint y = index / dimensions.x;\n\tint x = index - y * dimensions.x;\n\treturn vec2(float(x) + 0.5, float(y) + 0.5) / vec2(dimensions);\n}',Si="\n".concat(Oi,"\n\n#if (__VERSION__ != 300 || ").concat(ut," == 1)\n\t// Cannot use int vertex attributes.\n\t// https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/vertexAttribPointer\n\tin float a_gpuio_index;\n#endif\n\nuniform sampler2D u_gpuio_positions; // Texture lookup with position data.\nuniform vec2 u_gpuio_positionsDimensions;\nuniform vec2 u_gpuio_scale;\n\nout vec2 v_uv;\nout vec2 v_lineWrapping; // Use this to test if line is only half wrapped and should not be rendered.\nflat out int v_index;\n\nvoid main() {\n\t// Calculate a uv based on the point's index attribute.\n\t#if (__VERSION__ != 300 || ").concat(ut," == 1)\n\t\tvec2 positionUV = uvFromIndex(a_gpuio_index, u_gpuio_positionsDimensions);\n\t\tv_index = int(a_gpuio_index);\n\t#else\n\t\tvec2 positionUV = uvFromIndex(gl_VertexID, u_gpuio_positionsDimensions);\n\t\tv_index = gl_VertexID;\n\t#endif\n\n\t// Calculate a global uv for the viewport.\n\t// Lookup vertex position and scale to [0, 1] range.\n\t#ifdef ").concat(pt,"\n\t\t// We have packed a 2D displacement with the position.\n\t\tvec4 positionData = texture(u_gpuio_positions, positionUV);\n\t\t// position = first two components plus last two components (optional accumulation buffer).\n\t\tv_uv = (positionData.rg + positionData.ba) * u_gpuio_scale;\n\t#else\n\t\tv_uv = texture(u_gpuio_positions, positionUV).rg  * u_gpuio_scale;\n\t#endif\n\n\t// Wrap if needed.\n\tv_lineWrapping = vec2(0.0);\n\t#ifdef ").concat(ct,"\n\t\tv_lineWrapping.x = max(step(1.0, v_uv.x), step(v_uv.x, 0.0));\n\t\tv_ux.x = fract(v_uv.x + 1.0);\n\t#endif\n\t#ifdef ").concat(st,"\n\t\tv_lineWrapping.y = max(step(1.0, v_uv.y), step(v_uv.y, 0.0));\n\t\tv_ux.y = fract(v_uv.y + 1.0);\n\t#endif\n\n\t// Calculate position in [-1, 1] range.\n\tvec2 position = v_uv * 2.0 - 1.0;\n\n\tgl_Position = vec4(position, 0, 1);\n}"),Li="\n".concat(Oi,"\n\n#if (__VERSION__ != 300)\n\t// Cannot use int vertex attributes.\n\t// https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/vertexAttribPointer\n\tin float a_gpuio_index;\n#endif\n\nuniform sampler2D u_gpuio_positions; // Texture lookup with position data.\nuniform vec2 u_gpuio_positionsDimensions;\nuniform vec2 u_gpuio_scale;\nuniform float u_gpuio_pointSize;\n\nout vec2 v_uv;\nout vec2 v_uv_position;\nout vec2 v_position;\nflat out int v_index;\n\nvoid main() {\n\t// Calculate a uv based on the point's index attribute.\n\t#if (__VERSION__ == 300)\n\t\tv_uv_position = uvFromIndex(gl_VertexID, u_gpuio_positionsDimensions);\n\t\tv_index = gl_VertexID;\n\t#else\n\t\tv_uv_position = uvFromIndex(a_gpuio_index, u_gpuio_positionsDimensions);\n\t\tv_index = int(a_gpuio_index);\n\t#endif\n\n\t// Calculate a global uv for the viewport.\n\t// Lookup vertex position and scale to [0, 1] range.\n\t#ifdef ").concat(pt,"\n\t\t// We have packed a 2D displacement with the position.\n\t\tvec4 positionData = texture(u_gpuio_positions, v_uv_position);\n\t\t// position = first two components plus last two components (optional accumulation buffer).\n\t\tv_position = positionData.rg + positionData.ba;\n\t\tv_uv = v_position * u_gpuio_scale;\n\t#else\n\t\tv_position = texture(u_gpuio_positions, v_uv_position).rg;\n\t\tv_uv = v_position * u_gpuio_scale;\n\t#endif\n\n\t// Wrap if needed.\n\t#ifdef ").concat(ct,"\n\t\tv_uv.x = fract(v_uv.x + ceil(abs(v_uv.x)));\n\t#endif\n\t#ifdef ").concat(st,"\n\t\tv_uv.y = fract(v_uv.y + ceil(abs(v_uv.y)));\n\t#endif\n\n\t// Calculate position in [-1, 1] range.\n\tvec2 position = v_uv * 2.0 - 1.0;\n\n\tgl_PointSize = u_gpuio_pointSize;\n\tgl_Position = vec4(position, 0, 1);\n}"),Fi="\n".concat(Oi,"\n\n#if (__VERSION__ != 300)\n\t// Cannot use int vertex attributes.\n\t// https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/vertexAttribPointer\n\tin float a_gpuio_index;\n#endif\n\nuniform sampler2D u_gpuio_vectors; // Texture lookup with vector data.\nuniform vec2 u_gpuio_dimensions;\nuniform vec2 u_gpuio_scale;\n\nout vec2 v_uv;\nflat out int v_index;\n\nvoid main() {\n\t#if (__VERSION__ == 300)\n\t\t// Divide index by 2.\n\t\tint index = gl_VertexID / 2;\n\t\tv_index = index;\n\t#else\n\t\t// Divide index by 2.\n\t\tfloat index = floor((a_gpuio_index + 0.5) / 2.0);\n\t\tv_index = int(index);\n\t#endif\n\n\t// Calculate a uv based on the vertex index attribute.\n\tv_uv = uvFromIndex(index, u_gpuio_dimensions);\n\t#if (__VERSION__ == 300)\n\t\t// Add vector displacement if needed.\n\t\tv_uv += float(gl_VertexID - 2 * index) * texture(u_gpuio_vectors, v_uv).xy * u_gpuio_scale;\n\t#else\n\t\t// Add vector displacement if needed.\n\t\tv_uv += (a_gpuio_index - 2.0 * index) * texture(u_gpuio_vectors, v_uv).xy * u_gpuio_scale;\n\t#endif\n\n\n\t// Calculate position in [-1, 1] range.\n\tvec2 position = v_uv * 2.0 - 1.0;\n\n\tgl_Position = vec4(position, 0, 1);\n}"),Ni="\n".concat(Oi,"\n\n#if (__VERSION__ != 300)\n\t// Cannot use int vertex attributes.\n\t// https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/vertexAttribPointer\n\tin float a_gpuio_index;\n#endif\n\nuniform sampler2D u_gpuio_positions; // Texture lookup with position data.\nuniform vec2 u_gpuio_positionsDimensions;\nuniform vec2 u_gpuio_scale;\n\nout vec2 v_uv;\nout vec2 v_uv_position;\nout vec2 v_position;\nflat out int v_index;\n\nvoid main() {\n\t// Calculate a uv based on the point's index attribute.\n\t#if (__VERSION__ == 300)\n\t\tv_uv_position = uvFromIndex(gl_VertexID, u_gpuio_positionsDimensions);\n\t\tv_index = gl_VertexID;\n\t#else\n\t\tv_uv_position = uvFromIndex(a_gpuio_index, u_gpuio_positionsDimensions);\n\t\tv_index = int(a_gpuio_index);\n\t#endif\n\n\t// Calculate a global uv for the viewport.\n\t// Lookup vertex position and scale to [0, 1] range.\n\t#ifdef ").concat(pt,"\n\t\t// We have packed a 2D displacement with the position.\n\t\tvec4 positionData = texture(u_gpuio_positions, v_uv_position);\n\t\t// position = first two components plus last two components (optional accumulation buffer).\n\t\tv_position = positionData.rg + positionData.ba;\n\t\tv_uv = v_position * u_gpuio_scale;\n\t#else\n\t\tv_position = texture(u_gpuio_positions, v_uv_position).rg;\n\t\tv_uv = v_position * u_gpuio_scale;\n\t#endif\n\n\t// Calculate position in [-1, 1] range.\n\tvec2 position = v_uv * 2.0 - 1.0;\n\n\tgl_Position = vec4(position, 0, 1);\n}"),Gi=function(){function t(e,r){var o=this;this._fragmentShaders={},this._compileTimeConstants={},this._uniforms={},this._programs={},this._programsKeyLookup=new WeakMap,this._samplerUniformsIndices=[];var i=(r||{}).name;if(!e)throw new Error('Error initing GPUProgram "'.concat(i,'": must pass GPUComposer instance to GPUProgram(composer, params).'));if(!r)throw new Error("Error initing GPUProgram: must pass params to GPUProgram(composer, params).");if(!s.isObject(r))throw new Error("Error initing GPUProgram: must pass valid params object to GPUProgram(composer, params), got ".concat(JSON.stringify(r),"."));var a=Object.keys(r);oi(a,["name","fragmentShader","uniforms","compileTimeConstants"],"GPUProgram(composer, params)",r.name),ii(a,["name","fragmentShader"],"GPUProgram(composer, params)",r.name);var c=r.fragmentShader,u=r.uniforms,l=r.compileTimeConstants;this._composer=e,this.name=i;var f=nn(s.isString(c)?c:c.join("\n"),e.glslVersion,i),p=f.shaderSource,_=f.samplerUniforms,h=f.additionalSources;if(this._fragmentShaderSource=p,_.forEach((function(t,e){o._samplerUniformsIndices.push({name:t,inputIndex:0,shaderIndex:e})})),this.constructor===t&&h){this._childPrograms=[];for(var m=0,d=h.length;m<d;m++)this._childPrograms.push(new Ci(e,r,{fragmentShaderSource:h[m]}))}(l&&(this._compileTimeConstants=n({},l)),e.glslVersion===S&&(p.includes("dFdx")||p.includes("dFdy")||p.includes("fwidth")))&&(bi(e,yi,!0)&&(this._extensions="#extension GL_OES_standard_derivatives : enable\n"));if(u)for(m=0;m<u.length;m++){var v=u[m],g=v.name,y=v.value,b=v.type;this.setUniform(g,y,b)}}return t.prototype.recompile=function(t){var e=this._compileTimeConstants,n=!1;if(Object.keys(t).forEach((function(r){e[r]!==t[r]&&(n=!0,e[r]=t[r])})),n){for(var r=this,o=r._fragmentShaders,i=r._programs,a=r._programsKeyLookup,c=r._composer,s=r._uniforms,u=c.gl,l=Object.keys(i),f=0,p=l.length;f<p;f++){var _=i[d=l[f]];u.deleteProgram(_),a.delete(_),delete i[d]}for(var h=Object.keys(o),m=(f=0,h.length);f<m;f++){var d=h[f];u.deleteShader(o[d]),delete o[d]}for(var v=Object.values(s),g=(f=0,v.length);f<g;f++)v[f].location=new WeakMap;if(this._childPrograms){f=0;for(var y=this._childPrograms.length;f<y;f++)this._childPrograms[f].recompile(t)}}},t.prototype._getFragmentShader=function(t,e){var n=this._fragmentShaders;if(n[t])return n[t];for(var r=this,o=r._composer,i=r.name,a=r._fragmentShaderSource,c=r._compileTimeConstants,s=r._extensions,u=o.gl,l=o._errorCallback,f=o.verboseLogging,p=o.glslVersion,_=o.floatPrecision,h=o.intPrecision,m=Object.keys(e),d=0;d<m.length;d++){var v=m[d];c[v]=e[v]}f&&console.log('Compiling fragment shader for GPUProgram "'.concat(i,'" with compile time constants: ').concat(JSON.stringify(c)));var g=je(u,p,h,_,a,u.FRAGMENT_SHADER,i,l,c,s,0===Object.keys(n).length);if(g)return n[t]=g,n[t];l('Unable to compile fragment shader for GPUProgram "'.concat(i,'".'))},t.prototype._getProgramWithName=function(t,e,n){for(var r=this._samplerUniformsIndices,o=this._composer,i="",a={},c=0,s=r.length;c<s;c++){var u=n[r[c].inputIndex].layer,l=u.filter,f=u.wrapX,p=u.wrapY,_=u.type,h=u._internalFilter,m=u._internalWrapX,d=u._internalWrapY,v=f===m?0:f===E?1:0,g=p===d?0:p===E?1:0,y=l===h?0:l===b?1:0;i+="_IN".concat(c,"_").concat(v,"_").concat(g,"_").concat(y),a["".concat(ae).concat(c)]="".concat(v),a["".concat(ce).concat(c)]="".concat(g),a["".concat(ue).concat(c)]="".concat(y),o.glslVersion===S&&Me(_)&&(a["".concat(se).concat(c)]="1")}var w=Object.keys(e).map((function(t){return"_".concat(t,"_").concat(e[t])})).join(),P="".concat(t).concat(w).concat(i);if(this._programs[P])return this._programs[P];var x=this,A=x._uniforms,U=x._programs,T=x._programsKeyLookup,I=o.gl,R=o._errorCallback,O=o._getVertexShader(t,w,e,this.name);if(void 0!==O){var L=this._getFragmentShader(i,a);if(void 0!==L){var F=Xe(I,O,L,this.name,R);if(void 0===F)return I.deleteShader(L),void R('Unable to init program "'.concat(P,'" for GPUProgram "').concat(this.name,'".'));I.useProgram(F);for(var N=Object.keys(A),G=(c=0,N.length);c<G;c++){var C=N[c],B=A[C],V=B.value;_=B.type;this._setProgramUniform(F,C,V,_)}return U[P]=F,T.set(F,P),F}R('Unable to init fragment shader "'.concat(i,'" for GPUProgram "').concat(this.name,'".'))}else R('Unable to init vertex shader "'.concat(t).concat(w,'" for GPUProgram "').concat(this.name,'".'))},t.prototype._setProgramUniform=function(t,e,n,r){var o,i=this._composer,a=this._uniforms,c=i.gl,u=i._errorCallback,l=i.glslVersion===O,f=null===(o=a[e])||void 0===o?void 0:o.location.get(t);if(void 0===f){var p=c.getUniformLocation(t,e);if(null===p)return void console.warn('Could not init uniform "'.concat(e,'" for program "').concat(this.name,'". Check that uniform is present in shader code, unused uniforms may be removed by compiler. Also check that uniform type in shader code matches type ').concat(r,". Error code: ").concat(c.getError(),"."));f=p,a[e]&&a[e].location.set(t,f);var _=c.getUniform(t,f),h=!1;if(r===Q||r===$||r===Z||r===tt?s.isBoolean(_)||_.constructor===Array||(h=!0):r===D||r===M||r===k||r===W?s.isFiniteNumber(_)||_.constructor===Float32Array||(h=!0):r===j||r===X||r===H||r===Y?s.isInteger(_)||_.constructor===Int32Array||(h=!0):r!==z&&r!==J&&r!==q&&r!==K||(l?s.isNonNegativeInteger(_)||_.constructor===Uint32Array||(h=!0):s.isNonNegativeInteger(_)||_.constructor===Int32Array||(h=!0)),h)return void u('Invalid uniform "'.concat(e,'" for program "').concat(this.name,'". Check that uniform type in shader code matches type ').concat(r,", gl.getUniform(program, location) returned type: ").concat(_.constructor.name,"."))}switch(r){case Q:c.uniform1i(f,n?1:0);break;case $:c.uniform2i(f,n[0]?1:0,n[1]?1:0);break;case Z:c.uniform3i(f,n[0]?1:0,n[1]?1:0,n[2]?1:0);break;case tt:c.uniform4i(f,n[0]?1:0,n[1]?1:0,n[2]?1:0,n[3]?1:0);break;case D:c.uniform1f(f,n);break;case M:c.uniform2fv(f,n);break;case k:c.uniform3fv(f,n);break;case W:c.uniform4fv(f,n);break;case j:c.uniform1i(f,n);break;case X:c.uniform2iv(f,n);break;case H:c.uniform3iv(f,n);break;case Y:c.uniform4iv(f,n);break;case z:l?c.uniform1ui(f,n):c.uniform1i(f,n);break;case J:l?c.uniform2uiv(f,n):c.uniform2iv(f,n);break;case q:l?c.uniform3uiv(f,n):c.uniform3iv(f,n);break;case K:l?c.uniform4uiv(f,n):c.uniform4iv(f,n);break;default:throw new Error("Unknown uniform type ".concat(r,' for GPUProgram "').concat(this.name,'".'))}},t.prototype._cacheUniformValue=function(t,e,n){var r=this._uniforms,o=r[t];if(!o)return r[t]={location:new WeakMap,value:s.isArray(e)?e.slice():e,type:n},!0;var i=o.value;if(o.value=s.isArray(e)?e.slice():e,s.isArray(e)){for(var a=0,c=e.length;a<c;a++)if(e[a]!==i[a])return!0;return!1}return e!==i},t.prototype.setUniform=function(t,e,n){var r,o=this,i=o._programs,a=o._uniforms,c=o._composer,u=o._samplerUniformsIndices,l=c.verboseLogging,f=c.gl;if(s.isArray(e)&&e.length>4)throw new Error("Invalid uniform value: [".concat(e.join(", "),'] passed to GPUProgram "').concat(this.name,', uniforms must be of type number[] with length <= 4, number, or boolean."'));var p=null===(r=a[t])||void 0===r?void 0:r.type;if(n){var _=rn(e,n,t,this.name);if(void 0===p)p=_;else if(p!==_)throw new Error('Uniform "'.concat(t,'" for GPUProgram "').concat(this.name,'" cannot change from type ').concat(p," to type ").concat(_,"."))}if(void 0===p)throw new Error('Unknown type for uniform "'.concat(t,'", please pass in type to GPUProgram.setUniform(name, value, type) when initing a new uniform.'));if(this._cacheUniformValue(t,e,p)){var h=u.find((function(e){return e.name===t}));h&&s.isInteger(e)&&(h.inputIndex=e),l&&console.log('Setting uniform "'.concat(t,'" for program "').concat(this.name,'" to value ').concat(JSON.stringify(e),"."));for(var m=Object.keys(i),d=0,v=m.length;d<v;d++){var g=i[m[d]];f.useProgram(g),this._setProgramUniform(g,t,e,p)}if(this._childPrograms){d=0;for(var y=this._childPrograms.length;d<y;d++)this._childPrograms[d].setUniform(t,e,n)}}},t.prototype._setInternalFragmentUniforms=function(t,e){if(0!==e.length){if(!t)throw new Error("Must pass in valid WebGLProgram to GPUProgram._setInternalFragmentUniforms, got undefined.");var n=this._programsKeyLookup,r=this._samplerUniformsIndices;if(!n.get(t))throw new Error('Could not find valid programName for WebGLProgram in GPUProgram "'.concat(this.name,'".'));for(var o=new Array(Math.max(e.length,r.length)).fill(-1),i=0,a=r.length;i<a;i++){var c=r[i],s=c.inputIndex,u=c.shaderIndex;o[s]>=0?console.warn("Found > 1 sampler2D uniforms at texture index ".concat(s,' for GPUProgram "').concat(this.name,'".')):o[s]=u}i=0;for(var l=e.length;i<l;i++){var f=e[i].layer,p=f.width,_=f.height,h=o[i];if(!(h<0)){var m=f.filter,d=f.wrapX,v=f.wrapY,g=f._internalFilter,y=f._internalWrapX,b=f._internalWrapY,w=m!==g;if(w||d!==y||v!==b){var E=[.5/p,.5/_],P="".concat(le).concat(h);if(this._cacheUniformValue(P,E,M)&&this._setProgramUniform(t,P,E,M),w){var x=[p,_],A="".concat(fe).concat(h);this._cacheUniformValue(A,x,M)&&this._setProgramUniform(t,A,x,M)}}}}}},t.prototype._setVertexUniform=function(t,e,n,r){if(!t)throw new Error("Must pass in valid WebGLProgram to GPUProgram._setVertexUniform, got undefined.");if(!this._programsKeyLookup.get(t))throw new Error('Could not find valid programName for WebGLProgram in GPUProgram "'.concat(this.name,'".'));var o=rn(n,r,e,this.name);this._setProgramUniform(t,e,n,o)},t.prototype.dispose=function(){var t=this,e=t._composer,n=t._fragmentShaders,r=t._programs,o=t._programsKeyLookup,i=e.gl;if(e.verboseLogging&&console.log('Deallocating GPUProgram "'.concat(this.name,'".')),!i)throw new Error("Must call dispose() on all GPUPrograms before calling dispose() on GPUComposer.");if(Object.values(r).forEach((function(t){t&&(i.deleteProgram(t),o.delete(t))})),Object.keys(r).forEach((function(t){delete r[t]})),Object.values(n).forEach((function(t){i.deleteShader(t)})),Object.keys(n).forEach((function(t){delete n[t]})),this._childPrograms){for(var a=0,c=this._childPrograms.length;a<c;a++)this._childPrograms[a].dispose();this._childPrograms.length}delete this._childPrograms,delete this._composer,delete this.name,delete this._fragmentShaderSource,delete this._compileTimeConstants,delete this._extensions,delete this._uniforms,delete this._programs,delete this._programsKeyLookup,delete this._fragmentShaders,delete this._samplerUniformsIndices},t}(),Ci=function(t){function n(e,n,r){var o=t.call(this,e,n)||this,i=r.fragmentShaderSource;return o._fragmentShaderSource=i,o}return function(t,n){if("function"!=typeof n&&null!==n)throw new TypeError("Class extends value "+String(n)+" is not a constructor or null");function r(){this.constructor=t}e(t,n),t.prototype=null===n?Object.create(n):(r.prototype=n.prototype,new r)}(n,t),n}(Gi);function Bi(t,e){var n=e.type,r=e.precision||"",o=Ct(n,4),i=e.name||"copy_".concat(Nt(n,t.glslVersion),"_layer");return new Gi(t,{name:i,fragmentShader:"\nin vec2 v_uv;\nuniform ".concat(r," ").concat(Bt(n),"sampler2D u_state;\nout ").concat(r," ").concat(o," out_result;\nvoid main() {\n\tout_result = texture(u_state, v_uv);\n}"),uniforms:[{name:"u_state",value:0,type:d}]})}function Vi(t,e){var n=e.type,r=e.value,o=e.precision||"",i=s.isArray(r)?r.length:1,a=Ct(n,i),c=Ct(n,1===i?4:i),u=e.name||"setValue_".concat(a,"_w_length_").concat(i);return new Gi(t,{name:u,fragmentShader:"\nuniform ".concat(o," ").concat(a," u_value;\nout ").concat(o," ").concat(c," out_result;\nvoid main() {\n\tout_result = ").concat(a!==c?c:"","(u_value);\n}"),uniforms:[{name:"u_value",value:r,type:Nt(n,t.glslVersion)}]})}var Di=function(){function t(t){var e;this._errorState=!1,this._circlePositionsBuffer={},this._vertexAttributeLocations={},this._enabledVertexAttributes={},this._extensions={},this._clearValue=0,this._copyPrograms={},this._setValuePrograms={},this._vertexShaders=((e={})[et]={src:Ri,compiledShaders:{}},e[nt]={src:"\nin vec2 a_gpuio_position;\n\nuniform float u_gpuio_halfThickness;\nuniform vec2 u_gpuio_scale;\nuniform float u_gpuio_length;\nuniform float u_gpuio_rotation;\nuniform vec2 u_gpuio_translation;\n\nout vec2 v_uv_local;\nout vec2 v_uv;\n\nmat2 rotate2d(float _angle){\n\treturn mat2(cos(_angle), -sin(_angle), sin(_angle), cos(_angle));\n}\n\nvoid main() {\n\t// Calculate UV coordinates of current rendered object.\n\tv_uv_local = 0.5 * (a_gpuio_position + 1.0);\n\n\tvec2 position = a_gpuio_position;\n\t// Apply thickness / radius.\n\tposition *= u_gpuio_halfThickness;\n\t// Stretch center of shape to form a round-capped line segment.\n\tfloat signX = sign(position.x);\n\tposition.x += signX * u_gpuio_length / 2.0;\n\tv_uv_local.x = (signX + 1.0) / 2.0;// Set entire cap uv.x to 1 or 0.\n\t// Apply transformations.\n\tposition = u_gpuio_scale * (rotate2d(-u_gpuio_rotation) * position) + u_gpuio_translation;\n\n\t// Calculate a global uv for the viewport.\n\tv_uv = 0.5 * (position + 1.0);\n\n\t// Calculate vertex position.\n\tgl_Position = vec4(position, 0, 1);\n}",compiledShaders:{}},e[rt]={src:Li,compiledShaders:{}},e[it]={src:Fi,compiledShaders:{}},e[ot]={src:Si,compiledShaders:{}},e[at]={src:Ni,compiledShaders:{}},e),this.verboseLogging=!1,this._numTicks=0;var n=Object.keys(t);oi(n,["canvas","context","contextID","contextAttributes","glslVersion","intPrecision","floatPrecision","clearValue","verboseLogging","errorCallback"],"GPUComposer(params)"),ii(n,["canvas"],"GPUComposer(params)"),void 0!==t.verboseLogging&&(this.verboseLogging=t.verboseLogging);var r=this;this._errorCallback=function(e){r._errorState||(r._errorState=!0,t.errorCallback?t.errorCallback(e):_t(e))};var o=t.canvas,i=t.context;if(!i){var a;if(t.contextID)(a=o.getContext(t.contextID,t.contextAttributes))?i=a:console.warn("Unable to initialize WebGL context with contextID: ".concat(t.contextID,"."));if(!i)(a=o.getContext(L,t.contextAttributes)||o.getContext(F,t.contextAttributes)||o.getContext(G,t.contextAttributes)||o.getContext(N,t.contextAttributes))&&(i=a);if(!i)return void this._errorCallback("Unable to initialize WebGL context.")}this.isWebGL2=He(i),this.isWebGL2?this.verboseLogging&&console.log("Using WebGL 2.0 context."):this.verboseLogging&&console.log("Using WebGL 1.0 context."),this.gl=i;var c=t.glslVersion||(this.isWebGL2?O:S);(this.isWebGL2||c!==O||(console.warn("GLSL3.x is incompatible with WebGL1.0 contexts, falling back to GLSL1."),c=S),this.glslVersion=c,this.intPrecision=t.intPrecision||V,this.floatPrecision=t.floatPrecision||V,i.disable(i.DEPTH_TEST),i.pixelStorei(i.UNPACK_ALIGNMENT,1),this.isWebGL2)?i.bindVertexArray(null):bi(this,vi,!0).bindVertexArrayOES(null);i.bindBuffer(i.ARRAY_BUFFER,null),void 0!==t.clearValue&&(this.clearValue=t.clearValue),this.resize([o.clientWidth,o.clientHeight]),this.verboseLogging&&console.log("".concat(this.gl.getParameter(this.gl.MAX_TEXTURE_IMAGE_UNITS)," textures max."))}return t.initWithThreeRenderer=function(e,r){var o=new t(n(n({floatPrecision:e.capabilities.precision,intPrecision:e.capabilities.precision},r),{canvas:e.domElement,context:e.getContext()}));return o._threeRenderer=e,o},Object.defineProperty(t.prototype,"canvas",{get:function(){return this.gl.canvas},enumerable:!1,configurable:!0}),t.prototype._setValueProgramForType=function(t){var e=this._setValuePrograms,n=Nt(t,this.glslVersion);return void 0===e[n]&&(e[n]=Vi(this,{type:t,value:[0,0,0,0]})),e[n]},t.prototype._copyProgramForType=function(t){var e=this._copyPrograms,n=Nt(t,this.glslVersion);return void 0===e[n]&&(e[n]=Bi(this,{type:t})),e[n]},t.prototype._initVertexBuffer=function(t){var e=this,n=e._errorCallback,r=e.gl;e.isWebGL2?r.bindVertexArray(null):bi(this,vi,!0).bindVertexArrayOES(null);var o=r.createBuffer();if(o)return r.bindBuffer(r.ARRAY_BUFFER,o),r.bufferData(r.ARRAY_BUFFER,t,r.STATIC_DRAW),o;n("Unable to allocate gl buffer.")},t.prototype._getQuadPositionsBuffer=function(){if(void 0===this._quadPositionsBuffer){var t=new Float32Array([-1,-1,1,-1,-1,1,1,1]);this._quadPositionsBuffer=this._initVertexBuffer(t)}return this._quadPositionsBuffer},t.prototype._getBoundaryPositionsBuffer=function(){if(void 0===this._boundaryPositionsBuffer){var t=new Float32Array([-1,-1,1,-1,1,1,-1,1,-1,-1]);this._boundaryPositionsBuffer=this._initVertexBuffer(t)}return this._boundaryPositionsBuffer},t.prototype._getCirclePositionsBuffer=function(t){var e=this._circlePositionsBuffer;if(null==e[t]){for(var n=[0,0],r=0;r<t;r++)n.push(Math.cos(2*Math.PI*r/t),Math.sin(2*Math.PI*r/t));n.push(Math.cos(0),Math.sin(0));var o=new Float32Array(n),i=this._initVertexBuffer(o);e[t]=i}return e[t]},t.prototype._cloneGPULayer=function(t,e){for(var n=t.is1D()?t.length:[t.width,t.height],r=new li(this,{name:e||"".concat(t.name,"-clone"),dimensions:n,type:t.type,numComponents:t.numComponents,filter:t.filter,wrapX:t.wrapX,wrapY:t.wrapY,numBuffers:t.numBuffers,clearValue:t.clearValue}),o=this._copyProgramForType(t.type),i=0;i<t.numBuffers-1;i++)r.incrementBufferIndex();for(i=0;i<t.numBuffers;i++)this.step({program:o,input:t.getStateAtIndex(i),output:r});for(i=-1;i<t.bufferIndex;i++)r.incrementBufferIndex();return r},t.prototype._getVertexShader=function(t,e,n,r){var o=this,i=o._errorCallback,a=o._vertexShaders,c=o.gl,s=o.glslVersion,u=o.intPrecision,l=o.floatPrecision,f=a[t],p=f.compiledShaders,_=f.src;if(""===e&&(e="_default"),void 0===p[e]){if(""===_)throw new Error('Error compiling GPUProgram "'.concat(r,'": no source for vertex shader with name "').concat(t,'".'));var h=je(c,s,u,l,en(_,s),c.VERTEX_SHADER,r,i,n,void 0,!0);if(!h)return void i('Unable to compile "'.concat(t).concat(e,'" vertex shader for GPUProgram "').concat(r,'".'));p[e]=h}return p[e]},t.prototype.resize=function(t){var e=this.canvas,n=t[0],r=t[1];if(!s.isNonNegativeInteger(n)||!s.isNonNegativeInteger(r))throw s.isArray(t)?new Error("Invalid dimensions parameter supplied to GPUComposer.resize(), expected positive integers, got: ".concat(n,", ").concat(r)):new Error("Invalid dimensions parameter supplied to GPUComposer.resize(), expected dimensions array of length 2, got: ".concat(JSON.stringify(t)));e.width=n,e.height=r,this._width=n,this._height=r},t.prototype._drawSetup=function(t,e,n,r,o,i){var a=this.gl,c=[];if(o)if(o.layer)c.push(o);else if(o.constructor===li)c.push(o.currentState);else for(var s=0;s<o.length;s++){var u=o[s];c.push(u.currentState?u.currentState:u)}var l=t._getProgramWithName(e,n,c);this._setOutputLayer(t.name,r,o,i),a.useProgram(l);for(s=0;s<c.length;s++)a.activeTexture(a.TEXTURE0+s),a.bindTexture(a.TEXTURE_2D,c[s].texture);return t._setInternalFragmentUniforms(l,c),l},t.prototype._setBlendMode=function(t){var e=this.gl;t&&(e.enable(e.BLEND),e.blendFunc(e.SRC_ALPHA,e.ONE_MINUS_SRC_ALPHA))},t.prototype._addLayerToInputs=function(t,e){return void 0===e?[t]:s.isArray(e)?on(t,e)>=0?e:i(i([],e,!0),[t],!1):e===t||e.layer===t?[e]:[e,t]},t.prototype._passThroughLayerDataFromInputToOutput=function(t){var e=this._copyProgramForType(t._internalType);this.step({program:e,input:t,output:t})},t.prototype._setOutputLayer=function(t,e,n,r){var o=this.gl,i=this.isWebGL2;if(r){for(var a=s.isArray(r)?r:[r],c=0,u=a.length;c<u;c++){var l=a[c];if(n&&(n===r||n.layer===r||s.isArray(n)&&on(l,n)>=0)){if(1===l.numBuffers)throw new Error('Cannot use same buffer "'.concat(l.name,'" for input and output of a program. Try increasing the number of buffers in your output layer to at least 2 so you can render to nextState using currentState as an input.'));e?l._prepareForWrite(!0):(this._passThroughLayerDataFromInputToOutput(l),l._prepareForWrite(!1))}else e?l._prepareForWrite(!0):(l._usingTextureOverrideForCurrentBuffer()&&this._passThroughLayerDataFromInputToOutput(l),l._prepareForWrite(!1))}var f=a[0],p=void 0,_=[o.COLOR_ATTACHMENT0];if(a.length>1){p=[];for(c=1,u=a.length;c<u;c++)p.push(a[c]._currentTexture),_.push(o.COLOR_ATTACHMENT0+c)}ui(this,f,f._currentTexture,p),i&&o.drawBuffers(_);var h=this._widthHeightForOutput(t,r),m=h.width,d=h.height;o.viewport(0,0,m,d)}else{o.bindFramebuffer(o.FRAMEBUFFER,null);var v=this._width,g=this._height;o.viewport(0,0,v,g)}},t.prototype._setVertexAttribute=function(t,e,n,r){var o,i=this,a=i.gl,c=i._vertexAttributeLocations,s=i._enabledVertexAttributes,u=c[e];if(u||(u=new WeakMap,c[e]=u),void 0===o){if((o=a.getAttribLocation(t,e))<0)throw new Error('Unable to find vertex attribute "'.concat(e,'" in program "').concat(r,'".'));u.set(t,o)}a.vertexAttribPointer(o,n,a.FLOAT,!1,0,0),a.enableVertexAttribArray(o),s[o]=!0},t.prototype._disableVertexAttributes=function(){for(var t=this._enabledVertexAttributes,e=this.gl,n=Object.keys(t),r=0,o=n.length;r<o;r++){var i=n[r];t[i]&&(e.disableVertexAttribArray(i),delete t[i])}},t.prototype._setPositionAttribute=function(t,e){this._setVertexAttribute(t,"a_gpuio_position",2,e)},t.prototype._setIndexAttribute=function(t,e){this._setVertexAttribute(t,"a_gpuio_index",1,e)},t.prototype._setUVAttribute=function(t,e){this._setVertexAttribute(t,"a_gpuio_uv",2,e)},t.prototype._widthHeightForOutput=function(t,e){if(s.isArray(e)){for(var n=e[0],r=n?n.width:this._width,o=n?n.height:this._height,i=1,a=e.length;i<a;i++){var c=e[i];if(c.width!==r||c.height!==o)throw new Error("Output GPULayers must have the same dimensions, got dimensions [".concat(r,", ").concat(o,"] and [").concat(c.width,", ").concat(c.height,'] for program "').concat(t,'".'))}return{width:r,height:o}}return{width:e?e.width:this._width,height:e?e.height:this._height}},t.prototype._iterateOverOutputsIfNeeded=function(t,e){if(t.output&&s.isArray(t.output)&&this.glslVersion===S){for(var r=0,o=t.output.length;r<o;r++)this[e](n(n({},t),{program:0===r?t.program:t.program._childPrograms[r-1],output:t.output[r]}));return!0}return!1},t.prototype._drawFinish=function(t){var e=this.gl;t.blendAlpha&&e.disable(e.BLEND)},t.prototype.step=function(t){var e=Object.keys(t);if(oi(e,["program","input","output","blendAlpha"],"GPUComposer.step(params)"),ii(e,["program"],"GPUComposer.step(params)"),!this._iterateOverOutputsIfNeeded(t,"step")){var n=this.gl,r=this._errorState,o=t.program,i=t.input,a=t.output;if(!r){var c=this._drawSetup(o,et,{},!0,i,a);o._setVertexUniform(c,"u_gpuio_scale",[1,1],l),o._setVertexUniform(c,"u_gpuio_translation",[0,0],l),n.bindBuffer(n.ARRAY_BUFFER,this._getQuadPositionsBuffer()),this._setPositionAttribute(c,o.name),this._setBlendMode(t.blendAlpha),n.drawArrays(n.TRIANGLE_STRIP,0,4),this._drawFinish(t)}}},t.prototype.stepBoundary=function(t){var e=Object.keys(t);if(oi(e,["program","input","output","edges","blendAlpha"],"GPUComposer.stepBoundary(params)"),ii(e,["program"],"GPUComposer.stepBoundary(params)"),!this._iterateOverOutputsIfNeeded(t,"stepBoundary")){var n=this.gl,r=this._errorState,o=t.program,i=t.input,a=t.output;if(!r){var c=this._widthHeightForOutput(o.name,a),u=c.width,f=c.height,p=this._drawSetup(o,et,{},!1,i,a),_=[1/u,1/f];if(o._setVertexUniform(p,"u_gpuio_scale",[1-_[0],1-_[1]],l),o._setVertexUniform(p,"u_gpuio_translation",_,l),n.bindBuffer(n.ARRAY_BUFFER,this._getBoundaryPositionsBuffer()),this._setPositionAttribute(p,o.name),this._setBlendMode(t.blendAlpha),t.edges){var h=t.edges;s.isArray(h)||(h=[h]);for(var m=0,d=h.length;m<d;m++){var v=h[m];v===St&&n.drawArrays(n.LINES,3,2),v===Lt&&n.drawArrays(n.LINES,1,2),v===Rt&&n.drawArrays(n.LINES,2,2),v===Ot&&n.drawArrays(n.LINES,0,2)}}else n.drawArrays(n.LINE_LOOP,0,4);this._drawFinish(t)}}},t.prototype.stepNonBoundary=function(t){var e=Object.keys(t);if(oi(e,["program","input","output","blendAlpha"],"GPUComposer.stepNonBoundary(params)"),ii(e,["program"],"GPUComposer.stepNonBoundary(params)"),!this._iterateOverOutputsIfNeeded(t,"stepNonBoundary")){var n=this.gl,r=this._errorState,o=t.program,i=t.input,a=t.output;if(!r){var c=this._widthHeightForOutput(o.name,a),s=c.width,u=c.height,f=this._drawSetup(o,et,{},!1,i,a),p=[1/s,1/u];o._setVertexUniform(f,"u_gpuio_scale",[1-2*p[0],1-2*p[1]],l),o._setVertexUniform(f,"u_gpuio_translation",p,l),n.bindBuffer(n.ARRAY_BUFFER,this._getQuadPositionsBuffer()),this._setPositionAttribute(f,o.name),this._setBlendMode(t.blendAlpha),n.drawArrays(n.TRIANGLE_STRIP,0,4),this._drawFinish(t)}}},t.prototype.stepCircle=function(t){var e,n=Object.keys(t);if(oi(n,["program","position","diameter","useOutputScale","input","output","numSegments","blendAlpha"],"GPUComposer.stepCircle(params)"),ii(n,["program","position","diameter"],"GPUComposer.stepCircle(params)"),!this._iterateOverOutputsIfNeeded(t,"stepCircle")){var r=this.gl,o=this._errorState,i=t.program,a=t.position,c=t.diameter,s=t.input,u=t.output;if(!o){var f=this._width,p=this._height;t.useOutputScale&&(f=(e=this._widthHeightForOutput(i.name,u)).width,p=e.height);var _=this._drawSetup(i,et,{},!1,s,u);i._setVertexUniform(_,"u_gpuio_scale",[c/f,c/p],l),i._setVertexUniform(_,"u_gpuio_translation",[2*a[0]/f-1,2*a[1]/p-1],l);var h=t.numSegments?t.numSegments:18;if(h<3)throw new Error("numSegments for GPUComposer.stepCircle must be greater than 2, got ".concat(h,"."));r.bindBuffer(r.ARRAY_BUFFER,this._getCirclePositionsBuffer(h)),this._setPositionAttribute(_,i.name),this._setBlendMode(t.blendAlpha),r.drawArrays(r.TRIANGLE_FAN,0,h+2),this._drawFinish(t)}}},t.prototype.stepSegment=function(t){var e,n=Object.keys(t);if(oi(n,["program","position1","position2","thickness","useOutputScale","input","output","endCaps","numCapSegments","blendAlpha"],"GPUComposer.stepSegment(params)"),ii(n,["program","position1","position2","thickness"],"GPUComposer.stepSegment(params)"),!this._iterateOverOutputsIfNeeded(t,"stepSegment")){var r=this.gl,o=this._errorState,i=t.program,a=t.position1,c=t.position2,s=t.thickness,u=t.input,f=t.output;if(!o){var p=this._width,_=this._height;t.useOutputScale&&(p=(e=this._widthHeightForOutput(i.name,f)).width,_=e.height);var h=this._drawSetup(i,nt,{},!1,u,f);i._setVertexUniform(h,"u_gpuio_halfThickness",s/2,l),i._setVertexUniform(h,"u_gpuio_scale",[2/p,2/_],l);var m=a[0]-c[0],d=a[1]-c[1],v=Math.atan2(d,m);i._setVertexUniform(h,"u_gpuio_rotation",v,l);var g=(a[0]+c[0])/2,y=(a[1]+c[1])/2;i._setVertexUniform(h,"u_gpuio_translation",[2*g/p-1,2*y/_-1],l);var b=Math.sqrt(m*m+d*d),w=t.numCapSegments?2*t.numCapSegments:18;if(t.endCaps){if(w<6||w%6!=0)throw new Error("numCapSegments for GPUComposer.stepSegment must be divisible by 3, got ".concat(w/2,"."));i._setVertexUniform(h,"u_gpuio_length",b,l),r.bindBuffer(r.ARRAY_BUFFER,this._getCirclePositionsBuffer(w))}else i._setVertexUniform(h,"u_gpuio_length",b-s,l),r.bindBuffer(r.ARRAY_BUFFER,this._getQuadPositionsBuffer());this._setPositionAttribute(h,i.name),this._setBlendMode(t.blendAlpha),t.endCaps?r.drawArrays(r.TRIANGLE_FAN,0,w+2):r.drawArrays(r.TRIANGLE_STRIP,0,4),this._drawFinish(t)}}},t.prototype.stepRect=function(t){var e=Object.keys(t);if(oi(e,["program","position","size","useOutputScale","input","output","blendAlpha"],"GPUComposer.stepRect(params)"),ii(e,["program","position","size"],"GPUComposer.stepRect(params)"),!this._iterateOverOutputsIfNeeded(t,"stepRect")){var n=[t.position[0],t.position[1]+t.size[1]/2],r=[t.position[0]+t.size[0],n[1]];this.stepSegment({program:t.program,position1:n,position2:r,thickness:t.size[1],useOutputScale:t.useOutputScale,input:t.input,output:t.output,endCaps:!1,blendAlpha:t.blendAlpha})}},t.prototype.drawLayerAsPoints=function(t){var e,n=Object.keys(t);if(oi(n,["layer","program","input","output","pointSize","useOutputScale","count","color","wrapX","wrapY","blendAlpha"],"GPUComposer.drawLayerAsPoints(params)"),ii(n,["layer"],"GPUComposer.drawLayerAsPoints(params)"),!this._iterateOverOutputsIfNeeded(t,"drawLayerAsPoints")){var r=this,o=r.gl,a=r._pointIndexArray,c=r.glslVersion,s=r._errorState,u=t.layer,f=t.output;if(!s){if(2!==u.numComponents&&4!==u.numComponents)throw new Error('GPUComposer.drawLayerAsPoints() must be passed a layer parameter with either 2 or 4 components, got layer "'.concat(u.name,'" with ').concat(u.numComponents," components."));var p=u.length,_=t.count||p;if(_>p)throw new Error("Invalid count ".concat(_," for layer parameter of length ").concat(p,"."));c===S&&_>Ut&&console.warn("Points positions array length: ".concat(_," is longer than what is supported by GLSL1 : ").concat(Ut,"."));var h=t.program;if(void 0===h){h=this._setValueProgramForType(l);var m=t.color||[1,0,0];if(3!==m.length)throw new Error("Color parameter must have length 3, got ".concat(JSON.stringify(m),"."));h.setUniform("u_value",i(i([],m,!0),[1],!1),l)}var v=this._addLayerToInputs(u,t.input),g={};4===u.numComponents&&(g[pt]="1"),t.wrapX&&(g[ct]="1"),t.wrapY&&(g[st]="1");var y=this._drawSetup(h,rt,g,!1,v,f);h._setVertexUniform(y,"u_gpuio_positions",on(u,v),d);var b=this._width,w=this._height;t.useOutputScale&&(b=(e=this._widthHeightForOutput(h.name,f)).width,w=e.height),h._setVertexUniform(y,"u_gpuio_scale",[1/b,1/w],l);var E=t.pointSize||1;h._setVertexUniform(y,"u_gpuio_pointSize",E,l);var P=[u.width,u.height];if(h._setVertexUniform(y,"u_gpuio_positionsDimensions",P,l),c===S){if(void 0===this._pointIndexBuffer||a&&a.length<_){var x=Qe(p);this._pointIndexArray=x,this._pointIndexBuffer=this._initVertexBuffer(x)}o.bindBuffer(o.ARRAY_BUFFER,this._pointIndexBuffer),this._setIndexAttribute(y,h.name)}this._setBlendMode(t.blendAlpha),o.drawArrays(o.POINTS,0,_),this._drawFinish(t)}}},t.prototype.drawLayerAsVectorField=function(t){var e=Object.keys(t);if(oi(e,["layer","program","input","output","vectorSpacing","vectorScale","color","blendAlpha"],"GPUComposer.drawLayerAsVectorField(params)"),ii(e,["layer"],"GPUComposer.drawLayerAsVectorField(params)"),!this._iterateOverOutputsIfNeeded(t,"drawLayerAsVectorField")){var n=this,r=n.gl,o=n._vectorFieldIndexArray,a=n._width,c=n._height,s=n.glslVersion,u=n._errorState,f=t.layer,p=t.output;if(!u){if(2!==f.numComponents)throw new Error('GPUComposer.drawLayerAsVectorField() must be passed a fieldLayer with 2 components, got fieldLayer "'.concat(f.name,'" with ').concat(f.numComponents," components."));var _=t.program;if(void 0===_){_=this._setValueProgramForType(l);var h=t.color||[1,0,0];if(3!==h.length)throw new Error("color parameter must have length 3, got ".concat(JSON.stringify(h),"."));_.setUniform("u_value",i(i([],h,!0),[1],!1),l)}var m=this._addLayerToInputs(f,t.input),v=this._drawSetup(_,it,{},!1,m,p);_._setVertexUniform(v,"u_gpuio_vectors",on(f,m),d);var g=t.vectorScale||1;_._setVertexUniform(v,"u_gpuio_scale",[g/a,g/c],l);var y=t.vectorSpacing||10,b=[Math.floor(a/y),Math.floor(c/y)];_._setVertexUniform(v,"u_gpuio_dimensions",b,l);var w=2*b[0]*b[1];if(s===S){if(void 0===this._vectorFieldIndexBuffer||o&&o.length<w){var E=Qe(w);this._vectorFieldIndexArray=E,this._vectorFieldIndexBuffer=this._initVertexBuffer(E)}r.bindBuffer(r.ARRAY_BUFFER,this._vectorFieldIndexBuffer),this._setIndexAttribute(v,_.name)}this._setBlendMode(t.blendAlpha),r.drawArrays(r.LINES,0,w),this._drawFinish(t)}}},t.prototype.drawLayerAsMesh=function(t){var e,n=Object.keys(t);if(oi(n,["layer","indices","program","input","output","useOutputScale","color","blendAlpha"],"GPUComposer.drawLayerAsMesh(params)"),ii(n,["layer"],"GPUComposer.drawLayerAsMesh(params)"),!this._iterateOverOutputsIfNeeded(t,"drawLayerAsMesh")){var r=this,o=r.gl,a=r._width,c=r._height,s=r.glslVersion,u=r._errorState,f=r._meshIndexBuffer,p=r._meshIndexArray,_=t.layer,h=t.output;if(!u){if(2!==_.numComponents&&4!==_.numComponents)throw new Error('GPUComposer.drawLayerAsMesh() must be passed a layer parameter with either 2 or 4 components, got position GPULayer "'.concat(_.name,'" with ').concat(_.numComponents," components."));var m=_.is1D()?_.length:_.width*_.height;s===S&&m>Ut&&console.warn("Mesh positions array length: ".concat(m," is longer than what is supported by GLSL1 : ").concat(Ut,"."));var v=t.program;if(void 0===v){v=this._setValueProgramForType(l);var g=t.color||[1,0,0];if(3!==g.length)throw new Error("Color parameter must have length 3, got ".concat(JSON.stringify(g),"."));v.setUniform("u_value",i(i([],g,!0),[1],!1),l)}var y=this._addLayerToInputs(_,t.input),b={};4===_.numComponents&&(b[pt]="1");var w=this._drawSetup(v,at,b,!1,y,h);v._setVertexUniform(w,"u_gpuio_positions",on(_,y),d);var E=a,P=c;t.useOutputScale&&(E=(e=this._widthHeightForOutput(v.name,h)).width,P=e.height),v._setVertexUniform(w,"u_gpuio_scale",[1/E,1/P],l);var x=[_.width,_.height];if(v._setVertexUniform(w,"u_gpuio_positionsDimensions",x,l),s===S){if(void 0===f||p&&p.length<m){var A=Qe(m);this._meshIndexArray=A,this._meshIndexBuffer=this._initVertexBuffer(A)}o.bindBuffer(o.ARRAY_BUFFER,this._meshIndexBuffer),this._setIndexAttribute(w,v.name)}if(this._setBlendMode(t.blendAlpha),t.indices){var U=t.indices,T=U.glType,I=U.count,R=U.buffer;o.bindBuffer(o.ELEMENT_ARRAY_BUFFER,R);o.drawElements(o.TRIANGLES,I,T,0)}else o.drawArrays(o.TRIANGLES,0,m);this._drawFinish(t)}}},Object.defineProperty(t.prototype,"clearValue",{get:function(){return this._clearValue},set:function(t){var e=l;if(!ni(t,4,e))throw new Error("Invalid clearValue: ".concat(JSON.stringify(t)," for GPUComposer, expected ").concat(e," or array of ").concat(e," of length ").concat(4,"."));this._clearValue=s.isArray(t)?t.slice():t,this._clearValueVec4=void 0},enumerable:!1,configurable:!0}),Object.defineProperty(t.prototype,"clearValueVec4",{get:function(){var t=this._clearValueVec4;if(!t){var e=this.clearValue;if(t=[],s.isFiniteNumber(e))t.push(e,e,e,e);else{t.push.apply(t,e);for(var n=t.length;n<4;n++)t.push(0)}this._clearValueVec4=t}return t},enumerable:!1,configurable:!0}),t.prototype.clear=function(){var t=this.verboseLogging,e=this.clearValueVec4;t&&console.log("Clearing GPUComoser.");var n=this._setValueProgramForType(l);n.setUniform("u_value",e),this.step({program:n})},t.prototype.undoThreeState=function(){var t=this,e=t.gl,n=t._threeRenderer,r=t.isWebGL2;if(!n)throw new Error("Can't call undoThreeState() on a GPUComposer that was not inited with GPUComposer.initWithThreeRenderer().");(e.disable(e.BLEND),n)&&(r?e.bindVertexArray(null):bi(this,vi,!0).bindVertexArrayOES(null))},t.prototype.resetThreeState=function(){var t=this.gl,e=this._threeRenderer;if(!e)throw new Error("Can't call resetThreeState() on a GPUComposer that was not inited with GPUComposer.initWithThreeRenderer().");var n=e.getViewport(new Ii);t.viewport(n.x,n.y,n.width,n.height),e.resetState()},t.prototype.savePNG=function(t){void 0===t&&(t={});oi(Object.keys(t),["filename","dpi","callback"],"GPUComposer.savePNG(params)");var e=this.canvas,n=t.filename||"output",r=t.callback||saveAs;e.toBlob((function(e){e?t.dpi?ln(e,t.dpi).then((function(t){r(t,"".concat(n,".png"))})):r(e,"".concat(n,".png")):console.warn("Problem saving PNG, unable to init blob from canvas.")}),"image/png")},t.prototype.tick=function(){this._numTicks+=1;var t=this._lastTickTime,e=this._lastTickFPS,n=performance.now();if(this._lastTickTime=n,!t)return{fps:0,numTicks:this._numTicks};var r=1e3/(n-t);e||(e=r);var o=Number.parseFloat((.9*e+(1-.9)*r).toFixed(1));return this._lastTickFPS=o,{fps:o,numTicks:this._numTicks}},Object.defineProperty(t.prototype,"numTicks",{get:function(){return this._numTicks},enumerable:!1,configurable:!0}),t.prototype.dispose=function(){var t,e=this,n=this.gl;this.verboseLogging&&console.log("Deallocating GPUComposer."),this._quadPositionsBuffer&&(n.deleteBuffer(this._quadPositionsBuffer),delete this._quadPositionsBuffer),this._boundaryPositionsBuffer&&(n.deleteBuffer(this._boundaryPositionsBuffer),delete this._boundaryPositionsBuffer),Object.keys(this._circlePositionsBuffer).forEach((function(t){n.deleteBuffer(e._circlePositionsBuffer[t])})),delete this._circlePositionsBuffer,delete this._pointIndexArray,this._pointIndexBuffer&&(n.deleteBuffer(this._pointIndexBuffer),delete this._pointIndexBuffer),delete this._vectorFieldIndexArray,this._vectorFieldIndexBuffer&&(n.deleteBuffer(this._vectorFieldIndexBuffer),delete this._vectorFieldIndexBuffer),this._indexedLinesIndexBuffer&&(n.deleteBuffer(this._indexedLinesIndexBuffer),delete this._indexedLinesIndexBuffer),Object.keys(this._vertexAttributeLocations).forEach((function(t){delete e._vertexAttributeLocations[t]})),delete this._vertexAttributeLocations,delete this._enabledVertexAttributes,Object.values(this._vertexShaders).forEach((function(t){var e=t.compiledShaders;Object.keys(e).forEach((function(t){n.deleteShader(e[t]),delete e[t]}))})),delete this._vertexShaders,Object.values(this._copyPrograms).forEach((function(t){t.dispose()})),Object.keys(this._copyPrograms).forEach((function(t){delete e._copyPrograms[t]})),delete this._copyPrograms,Object.values(this._setValuePrograms).forEach((function(t){t.dispose()})),Object.keys(this._setValuePrograms).forEach((function(t){delete e._setValuePrograms[t]})),delete this._setValuePrograms,null===(t=this._wrappedLineColorProgram)||void 0===t||t.dispose(),delete this._wrappedLineColorProgram,delete this._threeRenderer,delete this.gl,delete this.canvas,delete this._errorCallback,delete this._extensions,delete this._errorState,delete this.verboseLogging,delete this._numTicks,delete this.isWebGL2,delete this.glslVersion,delete this.intPrecision,delete this.floatPrecision,delete this._width,delete this._height,delete this._clearValue,delete this._clearValueVec4},t}(),Mi=function(){function t(t,e){if(this._composer=t,!e)throw new Error("Error initing GPUIndexBuffer: must pass params to GPUIndexBuffer(composer, params).");if(!s.isObject(e))throw new Error("Error initing GPUIndexBuffer: must pass valid params object to GPUIndexBuffer(composer, params), got ".concat(JSON.stringify(e),"."));var n=Object.keys(e);oi(n,["indices","name"],"GPUIndexBuffer(composer, params)",e.name),ii(n,["indices"],"GPUIndexBuffer(composer, params)",e.name);var r,o,i=e.indices,a=t.gl,c=t.isWebGL2,u=a.createBuffer();switch(a.bindBuffer(a.ELEMENT_ARRAY_BUFFER,u),mo(r=i)||Vo(r)||(i=new Uint32Array(i)),i.constructor){case Uint8Array:o=a.UNSIGNED_BYTE;break;case Uint16Array:o=a.UNSIGNED_SHORT;break;case Uint32Array:if(!c)if(!bi(t,gi,!0)){o=a.UNSIGNED_SHORT,i=Uint16Array.from(i);break}o=a.UNSIGNED_INT}a.bufferData(a.ELEMENT_ARRAY_BUFFER,i,a.STATIC_DRAW),this.buffer=u,this.glType=o,this.count=i.length}return t.prototype.dispose=function(){var t=this._composer,e=this.buffer;t.gl.deleteBuffer(e),delete this._composer,delete this.buffer,delete this.glType,delete this.count},t}(),ki=n(n(n(n(n(n({isFloatType:function(t){return t===l||t===u},isUnsignedIntType:Ve,isSignedIntType:De,isIntType:Me,makeShaderHeader:We,compileShader:je,initGLProgram:Xe,readyToRead:Ye,preprocessVertexShader:en,preprocessFragmentShader:nn,isPowerOf2:function(t){return t>0&&0==(t&t-1)},initSequentialFloatArray:Qe,uniformInternalTypeForValue:rn,indexOfLayerInArray:on,readPixelsAsync:sn},wi),ie),ai),Ti),Ce),Dt),Wi=He,ji=function(){if(void 0===Be.supportsWebGL2){var t=document.createElement("canvas").getContext(L);Be.supportsWebGL2=He(t)}return Be.supportsWebGL2},Xi=Je,Hi=qe,Yi=function(){if(void 0===Be.mediumpVertexPrecision){var t=document.createElement("canvas").getContext("webgl");if(!t)throw new Error("Unable to init webgl context.");var e=je(t,S,B,B,"\n\tattribute vec4 position;  // needed because of another bug in Safari\n\tuniform mediump vec3 v;\n\tvarying mediump vec4 v_result;\n\tvoid main() {\n\t\tgl_Position = position;\n\t\tgl_PointSize = 1.0;\n\t\tv_result = vec4(normalize(v) * 0.5 + 0.5, 1);\n\t}\n\t\t",t.VERTEX_SHADER,"mediumpPrecisionVertexTest",_t);if(!e)throw new Error("Unable to init vertex shader.");var n=je(t,S,B,B,"\n\tvarying mediump vec4 v_result;\n\tvoid main() {\n\t\tgl_FragColor = v_result;\n\t}\n\t\t",t.FRAGMENT_SHADER,"mediumpPrecisionVertexTest",_t);if(!n)throw new Error("Unable to init fragment shader.");var r=Math.pow(2,31)-1,o=Math.sqrt(r),i=255*(o/Math.sqrt(o*o*3)*.5+.5)|0,a=Ke("mediumpPrecisionVertexTest",t,n,e,(function(e){var n=t.getUniformLocation(e,"v");t.uniform3f(n,o,o,o)})),c=Math.abs(a[0]-i)>16;Be.mediumpVertexPrecision=c?B:V}return Be.mediumpVertexPrecision},zi=function(){if(void 0===Be.mediumpFragmentPrecision){var t=document.createElement("canvas").getContext("webgl");if(!t)throw new Error("Unable to init webgl context.");var e=je(t,S,B,B,"\n\tattribute vec4 position;  // needed because of another bug in Safari\n\tvoid main() {\n\t\tgl_Position = position;\n\t\tgl_PointSize = 1.0;\n\t}\n\t\t",t.VERTEX_SHADER,"mediumpPrecisionFragmentTest",_t);if(!e)throw new Error("Unable to init vertex shader.");var n=je(t,S,B,B,"\n\tuniform mediump vec3 v;\n\tvoid main() {\n\t\tgl_FragColor = vec4(normalize(v) * 0.5 + 0.5, 1);\n\t}\n\t\t",t.FRAGMENT_SHADER,"mediumpPrecisionFragmentTest",_t);if(!n)throw new Error("Unable to init fragment shader.");var r=Math.pow(2,31)-1,o=Math.sqrt(r),i=255*(o/Math.sqrt(o*o*3)*.5+.5)|0,a=Ke("mediumpPrecisionFragmentTest",t,n,e,(function(e){var n=t.getUniformLocation(e,"v");t.uniform3f(n,o,o,o)})),c=Math.abs(a[0]-i)>16;Be.mediumpFragmentPrecision=c?B:V}return Be.mediumpFragmentPrecision},Ji=Bi,qi=function(t,e){var n=e.type,r=e.numInputs||2,o=e.precision||"",i=e.components||"xyzw",a=Ct(n,i.length),c=new Array(r),s=e.name||"".concat(r,"-way_add_").concat(Nt(n,t.glslVersion),"_").concat(i);return new Gi(t,{name:s,fragmentShader:"\nin vec2 v_uv;\n".concat(c.map((function(t,e){return"uniform ".concat(o," ").concat(Bt(n),"sampler2D u_state").concat(e,";")})).join("\n"),"\nout ").concat(o," ").concat(a," out_result;\nvoid main() {\n\tout_result = ").concat(c.map((function(t,e){return"texture(u_state".concat(e,", v_uv).").concat(i)})).join(" + "),";\n}"),uniforms:c.map((function(t,e){return{name:"u_state".concat(e),value:e,type:d}}))})},Ki=function(t,e){var n=e.type,r=e.value,o=e.precision||"",i=s.isArray(r)?r.length:1,a=Ct(n,i),c=1===i?4:i,u=Ct(n,c),l=Vt(c),f=e.name||"addValue_".concat(a,"_w_length_").concat(i);return new Gi(t,{name:f,fragmentShader:"\nin vec2 v_uv;\nuniform ".concat(o," ").concat(a," u_value;\nuniform ").concat(o," ").concat(Bt(n),"sampler2D u_state;\nout ").concat(o," ").concat(u," out_result;\nvoid main() {\n\tout_result = ").concat(a!==u?u:"","(u_value) + texture(u_state, v_uv)").concat(l,";\n}"),uniforms:[{name:"u_state",value:0,type:d},{name:"u_value",value:r,type:Nt(n,t.glslVersion)}]})},Qi=function(t,e){var n=e.type,r=e.value,o=e.precision||"",i=s.isArray(r)?r.length:1,a=Ct(n,i),c=1===i?4:i,u=Ct(n,c),l=Vt(c),f=e.name||"addValue_".concat(a,"_w_length_").concat(i);return new Gi(t,{name:f,fragmentShader:"\nin vec2 v_uv;\nuniform ".concat(o," ").concat(a," u_value;\nuniform ").concat(o," ").concat(Bt(n),"sampler2D u_state;\nout ").concat(o," ").concat(u," out_result;\nvoid main() {\n\tout_result = 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