(function(Z,ka){"object"===typeof exports&&"undefined"!==typeof module?module.exports=ka():"function"===typeof define&&define.amd?define(ka):Z.createREGL=ka()})(this,function(){function Z(a,b){this.id=Db++;this.type=a;this.data=b}function ka(a){if(0===a.length)return[];var b=a.charAt(0),c=a.charAt(a.length-1);if(1>>=b;c=(255>>=c;b|=c;c=(15>>=c;b|=c;c=(3>>c>>1}function hb(){function a(a){a:{for(var b=16;268435456>=b;b*=16)if(a<=b){a=b;break a}a=0}b=c[gb(a)>>2];return 0>2].push(a)}var c=R(8,function(){return[]});return{alloc:a,free:b,allocType:function(b,c){var d=null;switch(b){case 5120:d=new Int8Array(a(c),0,c);break;case 5121:d=new Uint8Array(a(c),0,c);break;case 5122:d=new Int16Array(a(2*c),0,c);break;case 5123:d=new Uint16Array(a(2*c),0,c);break;case 5124:d=new Int32Array(a(4*c),0,c);break;case 5125:d=new Uint32Array(a(4*c),0,c);break;case 5126:d=new Float32Array(a(4*c),0,c);break;default:return null}return d.length!== c?d.subarray(0,c):d},freeType:function(a){b(a.buffer)}}}function la(a){return!!a&&"object"===typeof a&&Array.isArray(a.shape)&&Array.isArray(a.stride)&&"number"===typeof a.offset&&a.shape.length===a.stride.length&&(Array.isArray(a.data)||O(a.data))}function ib(a,b,c,e,f,d){for(var q=0;qe&&(e=d.buffer.byteLength,5123===k?e>>=1:5125===k&&(e>>=2));d.vertCount=e;e=g;0>g&&(e=4,g=d.buffer.dimension,1===g&&(e=0),2===g&&(e=1),3===g&&(e=4));d.primType=e}function q(a){e.elementsCount--;delete n[a.id];a.buffer.destroy();a.buffer=null}var n={},v=0,k={uint8:5121,uint16:5123};b.oes_element_index_uint&&(k.uint32=5125);f.prototype.bind=function(){this.buffer.bind()};var u=[];return{create:function(a, b){function l(a){if(a)if("number"===typeof a)g(a),h.primType=4,h.vertCount=a|0,h.type=5121;else{var b=null,c=35044,e=-1,f=-1,m=0,n=0;if(Array.isArray(a)||O(a)||la(a))b=a;else if("data"in a&&(b=a.data),"usage"in a&&(c=nb[a.usage]),"primitive"in a&&(e=Ka[a.primitive]),"count"in a&&(f=a.count|0),"type"in a&&(n=k[a.type]),"length"in a)m=a.length|0;else if(m=f,5123===n||5122===n)m*=2;else if(5125===n||5124===n)m*=4;d(h,b,c,e,f,m,n)}else g(),h.primType=4,h.vertCount=0,h.type=5121;return l}var g=c.create(null, 34963,!0),h=new f(g._buffer);e.elementsCount++;l(a);l._reglType="elements";l._elements=h;l.subdata=function(a,b){g.subdata(a,b);return l};l.destroy=function(){q(h)};return l},createStream:function(a){var b=u.pop();b||(b=new f(c.create(null,34963,!0,!1)._buffer));d(b,a,35040,-1,-1,0,0);return b},destroyStream:function(a){u.push(a)},getElements:function(a){return"function"===typeof a&&a._elements instanceof f?a._elements:null},clear:function(){I(n).forEach(q)}}}function ob(a){for(var b=G.allocType(5123, a.length),c=0;c>>31<<15,d=(e<<1>>>24)-127,e=e>>13&1023;b[c]=-24>d?f:-14>d?f+(e+1024>>-14-d):15>=e,c.height>>=e,x(c,d[e]),a.mipmask|=1<b;++b)a.images[b]=null;return a}function ya(a){for(var b=a.images,c=0;cb){for(var c=0;c=--this.refCount&&F(this)}});q.profile&&(d.getTotalTextureSize=function(){var a=0;Object.keys(ea).forEach(function(b){a+=ea[b].stats.size});return a});return{create2D:function(b,c){function e(a,b){var c=f.texInfo;w.call(c);var d=ma();"number"===typeof a?"number"===typeof b?p(d,a|0,b|0):p(d,a|0,a|0):a?(H(c,a),P(d,a)):p(d,1,1);c.genMipmaps&&(d.mipmask=(d.width<<1)-1);f.mipmask=d.mipmask;v(f, d);f.internalformat=d.internalformat;e.width=d.width;e.height=d.height;T(f);t(d,3553);M(c,3553);wa();ya(d);q.profile&&(f.stats.size=La(f.internalformat,f.type,d.width,d.height,c.genMipmaps,!1));e.format=ca[f.internalformat];e.type=K[f.type];e.mag=Fa[c.magFilter];e.min=pa[c.minFilter];e.wrapS=qa[c.wrapS];e.wrapT=qa[c.wrapT];return e}var f=new y(3553);ea[f.id]=f;d.textureCount++;e(b,c);e.subimage=function(a,b,c,d){b|=0;c|=0;d|=0;var y=g();v(y,f);y.width=0;y.height=0;x(y,a);y.width=y.width||(f.width>> d)-b;y.height=y.height||(f.height>>d)-c;T(f);l(y,3553,b,c,d);wa();h(y);return e};e.resize=function(b,c){var d=b|0,g=c|0||d;if(d===f.width&&g===f.height)return e;e.width=f.width=d;e.height=f.height=g;T(f);for(var y=0;f.mipmask>>y;++y){var h=d>>y,z=g>>y;if(!h||!z)break;a.texImage2D(3553,y,f.format,h,z,0,f.format,f.type,null)}wa();q.profile&&(f.stats.size=La(f.internalformat,f.type,d,g,!1,!1));return e};e._reglType="texture2d";e._texture=f;q.profile&&(e.stats=f.stats);e.destroy=function(){f.decRef()}; return e},createCube:function(b,c,e,f,n,r){function m(a,b,c,d,e,f){var g,da=A.texInfo;w.call(da);for(g=0;6>g;++g)F[g]=ma();if("number"===typeof a||!a)for(a=a|0||1,g=0;6>g;++g)p(F[g],a,a);else if("object"===typeof a)if(b)P(F[0],a),P(F[1],b),P(F[2],c),P(F[3],d),P(F[4],e),P(F[5],f);else if(H(da,a),k(A,a),"faces"in a)for(a=a.faces,g=0;6>g;++g)v(F[g],A),P(F[g],a[g]);else for(g=0;6>g;++g)P(F[g],a);v(A,F[0]);A.mipmask=da.genMipmaps?(F[0].width<<1)-1:F[0].mipmask;A.internalformat=F[0].internalformat;m.width= F[0].width;m.height=F[0].height;T(A);for(g=0;6>g;++g)t(F[g],34069+g);M(da,34067);wa();q.profile&&(A.stats.size=La(A.internalformat,A.type,m.width,m.height,da.genMipmaps,!0));m.format=ca[A.internalformat];m.type=K[A.type];m.mag=Fa[da.magFilter];m.min=pa[da.minFilter];m.wrapS=qa[da.wrapS];m.wrapT=qa[da.wrapT];for(g=0;6>g;++g)ya(F[g]);return m}var A=new y(34067);ea[A.id]=A;d.cubeCount++;var F=Array(6);m(b,c,e,f,n,r);m.subimage=function(a,b,c,d,e){c|=0;d|=0;e|=0;var f=g();v(f,A);f.width=0;f.height=0; x(f,b);f.width=f.width||(A.width>>e)-c;f.height=f.height||(A.height>>e)-d;T(A);l(f,34069+a,c,d,e);wa();h(f);return m};m.resize=function(b){b|=0;if(b!==A.width){m.width=A.width=b;m.height=A.height=b;T(A);for(var c=0;6>c;++c)for(var d=0;A.mipmask>>d;++d)a.texImage2D(34069+c,d,A.format,b>>d,b>>d,0,A.format,A.type,null);wa();q.profile&&(A.stats.size=La(A.internalformat,A.type,m.width,m.height,!1,!0));return m}};m._reglType="textureCube";m._texture=A;q.profile&&(m.stats=A.stats);m.destroy=function(){A.decRef()}; return m},clear:function(){for(var b=0;bc;++c)if(0!==(b.mipmask&1<>c,b.height>>c,0,b.internalformat, b.type,null);else for(var d=0;6>d;++d)a.texImage2D(34069+d,c,b.internalformat,b.width>>c,b.height>>c,0,b.internalformat,b.type,null);M(b.texInfo,b.target)})},refresh:function(){for(var b=0;bd;++d){for(p= 0;pa;++a)c[a].resize(d);b.width=b.height=d;return b},_reglType:"framebufferCube",destroy:function(){c.forEach(function(a){a.destroy()})}})},clear:function(){I(M).forEach(r)}, restore:function(){t.cur=null;t.next=null;t.dirty=!0;I(M).forEach(function(b){b.framebuffer=a.createFramebuffer();p(b)})}})}function $a(){this.w=this.z=this.y=this.x=this.state=0;this.buffer=null;this.size=0;this.normalized=!1;this.type=5126;this.divisor=this.stride=this.offset=0}function Sb(a,b,c,e,f,d,q){function n(a){if(a!==r.currentVAO){var c=b.oes_vertex_array_object;a?c.bindVertexArrayOES(a.vao):c.bindVertexArrayOES(null);r.currentVAO=a}}function v(c){if(c!==r.currentVAO){if(c)c.bindAttrs(); else{for(var d=b.angle_instanced_arrays,e=0;e=m.byteLength?l.subdata(m): (l.destroy(),c.buffers[h]=null));c.buffers[h]||(l=c.buffers[h]=f.create(p,34962,!1,!0));k.buffer=f.getBuffer(l);k.size=k.buffer.dimension|0;k.normalized=!1;k.type=k.buffer.dtype;k.offset=0;k.stride=0;k.divisor=0;k.state=1;a[h]=1}else f.getBuffer(p)?(k.buffer=f.getBuffer(p),k.size=k.buffer.dimension|0,k.normalized=!1,k.type=k.buffer.dtype,k.offset=0,k.stride=0,k.divisor=0,k.state=1):f.getBuffer(p.buffer)?(k.buffer=f.getBuffer(p.buffer),k.size=(+p.size||k.buffer.dimension)|0,k.normalized=!!p.normalized|| !1,k.type="type"in p?Ja[p.type]:k.buffer.dtype,k.offset=(p.offset||0)|0,k.stride=(p.stride||0)|0,k.divisor=(p.divisor||0)|0,k.state=1):"x"in p&&(k.x=+p.x||0,k.y=+p.y||0,k.z=+p.z||0,k.w=+p.w||0,k.state=2)}for(l=0;la&&(a=b.stats.uniformsCount)});return a},c.getMaxAttributesCount=function(){var a=0;x.forEach(function(b){b.stats.attributesCount>a&&(a=b.stats.attributesCount)});return a});return{clear:function(){var b=a.deleteShader.bind(a);I(k).forEach(b);k={};I(u).forEach(b); u={};x.forEach(function(b){a.deleteProgram(b.program)});x.length=0;m={};c.shaderCount=0},program:function(b,d,e,f){var l=m[d];l||(l=m[d]={});var q=l[b];if(q&&(q.refCount++,!f))return q;var w=new n(d,b);c.shaderCount++;v(w,e,f);q||(l[b]=w);x.push(w);return L(w,{destroy:function(){w.refCount--;if(0>=w.refCount){a.deleteProgram(w.program);var b=x.indexOf(w);x.splice(b,1);c.shaderCount--}0>=l[w.vertId].refCount&&(a.deleteShader(u[w.vertId]),delete u[w.vertId],delete m[w.fragId][w.vertId]);Object.keys(m[w.fragId]).length|| (a.deleteShader(k[w.fragId]),delete k[w.fragId],delete m[w.fragId])}})},restore:function(){k={};u={};for(var a=0;a"+b+"?"+e+".constant["+b+"]:0;"}).join(""),"}}else{","if(",g,"(",e,".buffer)){",k,"=",f,".createStream(",34962,",",e,".buffer);","}else{",k,"=",f,".getBuffer(",e,".buffer);","}",m,'="type" in ',e,"?",z.glTypes,"[",e,".type]:",k,".dtype;",B.normalized,"=!!", e,".normalized;");d("size");d("offset");d("stride");d("divisor");c("}}");c.exit("if(",B.isStream,"){",f,".destroyStream(",k,");","}");return B})});return g}function F(a){var b=a["static"],c=a.dynamic,d={};Object.keys(b).forEach(function(a){var c=b[a];d[a]=w(function(a,b){return"number"===typeof c||"boolean"===typeof c?""+c:a.link(c)})});Object.keys(c).forEach(function(a){var b=c[a];d[a]=K(b,function(a,c){return a.invoke(c,b)})});return d}function A(a,b,d,e,f){function g(a){var b=p[a];b&&(ja[a]=b)} var m=O(a,b),l=G(a,f),p=C(a,l,f),X=M(a,f),ja=y(a,f),q=H(a,f,m);g("viewport");g(h("scissor.box"));var n=0>1)",u],");")}function b(){c(t,".drawArraysInstancedANGLE(",[n,q,r,u],");")}p&&"null"!==p?v?a():(c("if(",p,"){"),a(),c("}else{"),b(),c("}")):b()}function g(){function a(){c(l+".drawElements("+[n,r,x,q+"<<(("+x+"-5121)>>1)"]+");")}function b(){c(l+".drawArrays("+[n,q,r]+");")}p&&"null"!==p?v?a():(c("if(",p,"){"),a(),c("}else{"),b(),c("}")):b()}var h=a.shared,l=h.gl,k=h.draw,m=d.draw, p=function(){var e=m.elements,f=b;if(e){if(e.contextDep&&d.contextDynamic||e.propDep)f=c;e=e.append(a,f);m.elementsActive&&f("if("+e+")"+l+".bindBuffer(34963,"+e+".buffer.buffer);")}else e=f.def(),f(e,"=",k,".","elements",";","if(",e,"){",l,".bindBuffer(",34963,",",e,".buffer.buffer);}","else if(",h.vao,".currentVAO){",e,"=",a.shared.elements+".getElements("+h.vao,".currentVAO.elements);",na?"":"if("+e+")"+l+".bindBuffer(34963,"+e+".buffer.buffer);","}");return e}(),n=e("primitive"),q=e("offset"), r=function(){var e=m.count,f=b;if(e){if(e.contextDep&&d.contextDynamic||e.propDep)f=c;e=e.append(a,f)}else e=f.def(k,".","count");return e}();if("number"===typeof r){if(0===r)return}else c("if(",r,"){"),c.exit("}");var u,t;W&&(u=e("instances"),t=a.instancing);var x=p+".type",v=m.elements&&xa(m.elements)&&!m.vaoActive;W&&("number"!==typeof u||0<=u)?"string"===typeof u?(c("if(",u,">0){"),f(),c("}else if(",u,"<0){"),g(),c("}")):f():g()}function ca(a,b,c,d,e){b=P();e=b.proc("body",e);W&&(b.instancing= e.def(b.shared.extensions,".angle_instanced_arrays"));a(b,e,c,d);return b.compile().body}function Z(a,b,c,d){N(a,b);c.useVAO?c.drawVAO?b(a.shared.vao,".setVAO(",c.drawVAO.append(a,b),");"):b(a.shared.vao,".setVAO(",a.shared.vao,".targetVAO);"):(b(a.shared.vao,".setVAO(null);"),ga(a,b,c,d.attributes,function(){return!0}));Q(a,b,c,d.uniforms,function(){return!0},!1);U(a,b,b,c)}function Fa(a,b){var c=a.proc("draw",1);N(a,c);ia(a,c,b.context);S(a,c,b.framebuffer);Aa(a,c,b);I(a,c,b.state);E(a,c,b,!1,!0); var d=b.shader.progVar.append(a,c);c(a.shared.gl,".useProgram(",d,".program);");if(b.shader.program)Z(a,c,b,b.shader.program);else{c(a.shared.vao,".setVAO(null);");var e=a.global.def("{}"),f=c.def(d,".id"),g=c.def(e,"[",f,"]");c(a.cond(g).then(g,".call(this,a0);")["else"](g,"=",e,"[",f,"]=",a.link(function(c){return ca(Z,a,b,c,1)}),"(",d,");",g,".call(this,a0);"))}0=--this.refCount&&q(this)};f.profile&&(e.getTotalRenderbufferSize=function(){var a=0;Object.keys(u).forEach(function(b){a+=u[b].stats.size});return a});return{create:function(b, c){function l(b,c){var d=0,e=0,k=32854;"object"===typeof b&&b?("shape"in b?(e=b.shape,d=e[0]|0,e=e[1]|0):("radius"in b&&(d=e=b.radius|0),"width"in b&&(d=b.width|0),"height"in b&&(e=b.height|0)),"format"in b&&(k=n[b.format])):"number"===typeof b?(d=b|0,e="number"===typeof c?c|0:d):b||(d=e=1);if(d!==g.width||e!==g.height||k!==g.format)return l.width=g.width=d,l.height=g.height=e,g.format=k,a.bindRenderbuffer(36161,g.renderbuffer),a.renderbufferStorage(36161,k,d,e),f.profile&&(g.stats.size=Q[g.format]* g.width*g.height),l.format=v[g.format],l}var g=new d(a.createRenderbuffer());u[g.id]=g;e.renderbufferCount++;l(b,c);l.resize=function(b,c){var d=b|0,e=c|0||d;if(d===g.width&&e===g.height)return l;l.width=g.width=d;l.height=g.height=e;a.bindRenderbuffer(36161,g.renderbuffer);a.renderbufferStorage(36161,g.format,d,e);f.profile&&(g.stats.size=Q[g.format]*g.width*g.height);return l};l._reglType="renderbuffer";l._renderbuffer=g;f.profile&&(l.stats=g.stats);l.destroy=function(){g.decRef()};return l},clear:function(){I(u).forEach(q)}, restore:function(){I(u).forEach(function(b){b.renderbuffer=a.createRenderbuffer();a.bindRenderbuffer(36161,b.renderbuffer);a.renderbufferStorage(36161,b.format,b.width,b.height)});a.bindRenderbuffer(36161,null)}}},Za=[];Za[6408]=4;Za[6407]=3;var Ra=[];Ra[5121]=1;Ra[5126]=4;Ra[36193]=2;var Da=["x","y","z","w"],Xb="blend.func blend.equation stencil.func stencil.opFront stencil.opBack sample.coverage viewport scissor.box polygonOffset.offset".split(" "),Ga={0:0,1:1,zero:0,one:1,"src color":768,"one minus src color":769, "src alpha":770,"one minus src alpha":771,"dst color":774,"one minus dst color":775,"dst alpha":772,"one minus dst alpha":773,"constant color":32769,"one minus constant color":32770,"constant alpha":32771,"one minus constant alpha":32772,"src alpha saturate":776},ab={never:512,less:513,"<":513,equal:514,"=":514,"==":514,"===":514,lequal:515,"<=":515,greater:516,">":516,notequal:517,"!=":517,"!==":517,gequal:518,">=":518,always:519},Ta={0:0,zero:0,keep:7680,replace:7681,increment:7682,decrement:7683, "increment wrap":34055,"decrement wrap":34056,invert:5386},zb={cw:2304,ccw:2305},Ab=new J(!1,!1,!1,function(){}),$b=function(a,b){function c(){this.endQueryIndex=this.startQueryIndex=-1;this.sum=0;this.stats=null}function e(a,b,d){var e=q.pop()||new c;e.startQueryIndex=a;e.endQueryIndex=b;e.sum=0;e.stats=d;n.push(e)}if(!b.ext_disjoint_timer_query)return null;var f=[],d=[],q=[],n=[],v=[],k=[];return{beginQuery:function(a){var c=f.pop()||b.ext_disjoint_timer_query.createQueryEXT();b.ext_disjoint_timer_query.beginQueryEXT(35007, c);d.push(c);e(d.length-1,d.length,a)},endQuery:function(){b.ext_disjoint_timer_query.endQueryEXT(35007)},pushScopeStats:e,update:function(){var a,c;a=d.length;if(0!==a){k.length=Math.max(k.length,a+1);v.length=Math.max(v.length,a+1);v[0]=0;var e=k[0]=0;for(c=a=0;c=E.length&&e()}var c=Bb(E,a);E[c]=b}}}function k(){var a=Q.viewport,b=Q.scissor_box;a[0]=a[1]=b[0]=b[1]=0;H.viewportWidth=H.framebufferWidth=H.drawingBufferWidth=a[2]=b[2]=l.drawingBufferWidth;H.viewportHeight=H.framebufferHeight=H.drawingBufferHeight=a[3]=b[3]=l.drawingBufferHeight}function u(){H.tick+=1;H.time=x();k();I.procs.poll()}function m(){A.refresh();k();I.procs.refresh();t&&t.update()}function x(){return(Cb()- G)/1E3}a=Hb(a);if(!a)return null;var l=a.gl,g=l.getContextAttributes();l.isContextLost();var h=Ib(l,a);if(!h)return null;var r=Eb(),p={vaoCount:0,bufferCount:0,elementsCount:0,framebufferCount:0,shaderCount:0,textureCount:0,cubeCount:0,renderbufferCount:0,maxTextureUnits:0},w=h.extensions,t=$b(l,w),G=Cb(),C=l.drawingBufferWidth,J=l.drawingBufferHeight,H={tick:0,time:0,viewportWidth:C,viewportHeight:J,framebufferWidth:C,framebufferHeight:J,drawingBufferWidth:C,drawingBufferHeight:J,pixelRatio:a.pixelRatio}, C={elements:null,primitive:4,count:-1,offset:0,instances:-1},M=Yb(l,w),y=Jb(l,p,a,function(a){return K.destroyBuffer(a)}),T=Kb(l,w,y,p),K=Sb(l,w,M,p,y,T,C),F=Tb(l,r,p,a),A=Nb(l,w,M,function(){I.procs.poll()},H,p,a),O=Zb(l,w,M,p,a),S=Rb(l,w,M,A,O,p),I=Wb(l,r,w,M,y,T,A,S,{},K,F,C,H,t,a),r=Ub(l,S,I.procs.poll,H,g,w,M),Q=I.next,N=l.canvas,E=[],R=[],U=[],Z=[a.onDestroy],ca=null;N&&(N.addEventListener("webglcontextlost",f,!1),N.addEventListener("webglcontextrestored",d,!1));var aa=S.setFBO=q({framebuffer:Y.define.call(null, 1,"framebuffer")});m();g=L(q,{clear:function(a){if("framebuffer"in a)if(a.framebuffer&&"framebufferCube"===a.framebuffer_reglType)for(var b=0;6>b;++b)aa(L({framebuffer:a.framebuffer.faces[b]},a),n);else aa(a,n);else n(null,a)},prop:Y.define.bind(null,1),context:Y.define.bind(null,2),"this":Y.define.bind(null,3),draw:q({}),buffer:function(a){return y.create(a,34962,!1,!1)},elements:function(a){return T.create(a,!1)},texture:A.create2D,cube:A.createCube,renderbuffer:O.create,framebuffer:S.create,framebufferCube:S.createCube, vao:K.createVAO,attributes:g,frame:v,on:function(a,b){var c;switch(a){case "frame":return v(b);case "lost":c=R;break;case "restore":c=U;break;case "destroy":c=Z}c.push(b);return{cancel:function(){for(var a=0;a