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webglbuffer.js
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const webglbuffer={
createbuffer:function(groupname,opt){
let group
if(webglbuffers.hasOwnProperty(groupname))group=webglbuffers[groupname]
if(group==undefined){console.warn("nogroup");return}
this.group=group
this.buffername="coordinates"
this.bufferlength=2
this.divisor=0
this.drawtype=group.gl.DYNAMIC_DRAW
this.buffertype=group.gl.ARRAY_BUFFER
this.numbertype=group.gl.FLOAT
this.normalized=false
this.stride=0
this.offset=0
webglbuffer.addpro.call(this,opt)
this.pointer=group.gl.getAttribLocation(group.shader, this.buffername)
if("buffer" in opt){
this.buffer=opt.buffer
}else{//if there is no buffer
this.buffer=group.gl.createBuffer()
group.gl.bindBuffer(group.gl.ARRAY_BUFFER,this.buffer);
group.gl.bufferData(this.buffertype,group.buffersize*Float32Array.BYTES_PER_ELEMENT*this.bufferlength,this.drawtype)
group.gl.bindBuffer(group.gl.ARRAY_BUFFER,null)
}
group.buffer[this.buffername]=this
},
createfeedbackbuffer:function(groupname,opt){
let group
if(webglbuffers.hasOwnProperty(groupname))group=webglbuffers[groupname]
if(group==undefined){console.warn("nogroup");return}
let this0={}
let this1={}
this.group=group
this.buffername="coordinates"
this.bufferlength=2
this.divisor=0
this.drawtype=navigator.userAgent.indexOf("Firefox")!==-1?group.gl.STREAM_READ:group.gl.DYNAMIC_DRAW
this.buffertype=group.gl.TRANSFORM_FEEDBACK_BUFFER
this.numbertype=group.gl.FLOAT
this.normalized=false
this.stride=0
this.offset=0
this.noout=false
this.noin=false
webglbuffer.addpro.call(this,opt)
this.pointer=group.gl.getAttribLocation(group.shader, this.buffername)//man solte jetzt kucken wen da1 in name steht
if(!("noin" in opt)||!opt.noin){
webglbuffer.addproall.call(this0,this)
this0.buffer=group.gl.createBuffer()
group.gl.bindBuffer(group.gl.TRANSFORM_FEEDBACK_BUFFER,this0.buffer);
group.gl.bufferData(group.gl.TRANSFORM_FEEDBACK_BUFFER,group.buffersize*Float32Array.BYTES_PER_ELEMENT*this.bufferlength,this.drawtype)
group.gl.bindBuffer(group.gl.TRANSFORM_FEEDBACK_BUFFER,null)
group.feedbackbuffer[this.buffername]=this0
}
if(!("noout" in opt)||!opt.noout){
webglbuffer.addproall.call(this1,this)
this1.buffer=group.gl.createBuffer()
group.gl.bindBuffer(group.gl.TRANSFORM_FEEDBACK_BUFFER,this1.buffer);
group.gl.bufferData(group.gl.TRANSFORM_FEEDBACK_BUFFER,group.buffersize*Float32Array.BYTES_PER_ELEMENT*this.bufferlength,this.drawtype)
group.gl.bindBuffer(group.gl.TRANSFORM_FEEDBACK_BUFFER,null)
group.feedbackbuffer[this.buffername+"1"]=this1
}
},
creategroup:function(opt){
this.name="newBuffer"
if(typeof(opt.name)=="string")this.name=opt.name
this.gl=ctx
this.shader=shaderProgram[0]
this.buffersize=500//500000
webglbuffer.addpro.call(this,opt)
webglbuffers[this.name]=this
webglbuffers[this.name].buffer={}
webglbuffers[this.name].feedbackbuffer={}
webglbuffers[this.name].uniform={}
webglbuffers[this.name].framebuffer={}
webglbuffers[this.name].renderbuffer={}
},
createuniform:function(groupname,name){
let group
if(webglbuffers.hasOwnProperty(groupname))group=webglbuffers[groupname]
if(group==undefined){console.warn("nogroup");return}
group.uniform[name]=group.gl.getUniformLocation(group.shader,name)
},
createframebuffer:function(groupname,name){
let group
if(webglbuffers.hasOwnProperty(groupname))group=webglbuffers[groupname]
if(group==undefined){console.warn("nogroup");return}
group.framebuffer[name]=group.gl.createFramebuffer()
},
createrenderbuffer:function(groupname,name){
let group
if(webglbuffers.hasOwnProperty(groupname))group=webglbuffers[groupname]
if(group==undefined){console.warn("nogroup");return}
group.renderbuffer[name]=group.gl.createRenderbuffer()
},
addvaotogroup:function(groupname){
let group
if(webglbuffers.hasOwnProperty(groupname))group=webglbuffers[groupname]
if(group==undefined){console.warn("nogroup");return}
for(let i of Object.keys(group.buffer)){
group.gl.bindBuffer(group.gl.ARRAY_BUFFER,group.buffer[i].buffer);
group.gl.bufferData(group.buffer[i].buffertype,group.buffersize*Float32Array.BYTES_PER_ELEMENT*group.buffer[i].bufferlength,group.buffer[i].drawtype)
}
if(webgl2){
group.vao=group.gl.createVertexArray();
group.gl.bindVertexArray(group.vao)
}else if(WEBGLoes){
group.vao=WEBGLoes.createVertexArrayOES();
WEBGLoes.bindVertexArrayOES(group.vao)
}else{
console.log("novao")
return
}
for(let i of Object.keys(group.buffer)){
group.gl.bindBuffer(group.gl.ARRAY_BUFFER,group.buffer[i].buffer);
group.gl.enableVertexAttribArray(group.buffer[i].pointer)
group.gl.vertexAttribPointer(group.buffer[i].pointer,group.buffer[i].bufferlength,group.buffer[i].numbertype,group.buffer[i].normalized,group.buffer[i].stride,group.buffer[i].offset);
}
for(let i of Object.keys(group.feedbackbuffer)){
if(!group.feedbackbuffer[i].noin)group.gl.enableVertexAttribArray(group.feedbackbuffer[i].pointer)
}
if(webgl2){
group.gl.bindVertexArray(null)
}else if(WEBGLoes){
WEBGLoes.bindVertexArrayOES(null)
}
},
bindvertexarray:function(groupname){
let group
if(webglbuffers.hasOwnProperty(groupname))group=webglbuffers[groupname]
if(group==undefined){console.warn("nogroup");return}
if(webgl2){
group.gl.bindVertexArray(group.vao)
}else if(WEBGLoes){
WEBGLoes.bindVertexArrayOES(group.vao)
}else{
for(let i of Object.keys(group.buffer)){
group.gl.bindBuffer(group.gl.ARRAY_BUFFER,group.buffer[i].buffer);
group.gl.enableVertexAttribArray(group.buffer[i].pointer)
group.gl.vertexAttribPointer(group.buffer[i].pointer,group.buffer[i].bufferlength,group.buffer[i].numbertype,group.buffer[i].normalized,group.buffer[i].stride,group.buffer[i].offset);
}
}
},
bindandpointbuffer:function(obj){
obj.group.gl.bindBuffer(obj.buffertype,obj.buffer)
obj.group.gl.vertexAttribPointer(obj.pointer,obj.bufferlength,obj.numbertype,obj.normalized,obj.stride,obj.offset);
},
addproall:function(opt){
for(let i of Object.keys(opt)){
if(!this.hasOwnProperty(i))this[i]=opt[i]
}
},
addpro:function(opt){
for(let i of Object.keys(this)){
if(opt.hasOwnProperty(i))this[i]=opt[i]
}
},
testbufferoverflow:function(groupname,objlength){
//suche welche buffer enabled sind
let group
if(webglbuffers.hasOwnProperty(groupname))group=webglbuffers[groupname]
if(group==undefined){console.warn("nogroup");return}
if(group.buffersize<objlength*Float32Array.BYTES_PER_ELEMENT+100){//||group.buffersize>objlength*Float32Array.BYTES_PER_ELEMENT+400
const buffersizeold=group.buffersize
let multi=Math.pow(10,(Math.log(objlength*Float32Array.BYTES_PER_ELEMENT)*Math.LOG10E+1|0)-1)
if(group.buffersize==Math.ceil((objlength*Float32Array.BYTES_PER_ELEMENT)/multi)*multi)return
group.buffersize=Math.ceil((objlength*Float32Array.BYTES_PER_ELEMENT)/multi)*multi
if(debug){
console.groupCollapsed("bufferresize")
console.info("buffer to smal update size\nfrom: "+Number((buffersizeold).toFixed(1)).toLocaleString()+"\nto: "+Number((group.buffersize).toFixed(1)).toLocaleString()+"\nname: "+group.name)
console.groupEnd()
}
for(let i of Object.keys(group.buffer)){
group.gl.bindBuffer(group.buffer[i].buffertype, group.buffer[i].buffer);
if(webgl2){
var arrBuffer = new ArrayBuffer(buffersizeold*Float32Array.BYTES_PER_ELEMENT*group.buffer[i].bufferlength);
gl.getBufferSubData(group.buffer[i].buffertype, 0, new Int8Array(arrBuffer));
}
group.gl.bufferData(group.buffer[i].buffertype, group.buffersize*Float32Array.BYTES_PER_ELEMENT*group.buffer[i].bufferlength, group.buffer[i].drawtype);
if(webgl2){
group.gl.bufferSubData(group.buffer[i].buffertype,0, arrBuffer)
}
}
for(let i of Object.keys(group.feedbackbuffer)){
group.gl.bindBuffer(group.feedbackbuffer[i].buffertype, group.feedbackbuffer[i].buffer);
if(webgl2){
var arrBuffer = new ArrayBuffer(buffersizeold*Float32Array.BYTES_PER_ELEMENT*group.feedbackbuffer[i].bufferlength);
gl.getBufferSubData(group.feedbackbuffer[i].buffertype, 0, new Int8Array(arrBuffer));
}
group.gl.bufferData(group.feedbackbuffer[i].buffertype, group.buffersize*Float32Array.BYTES_PER_ELEMENT*group.feedbackbuffer[i].bufferlength,group.feedbackbuffer[i].drawtype)
if(webgl2){
group.gl.bufferSubData(group.feedbackbuffer[i].buffertype,0, arrBuffer)
}
}
}
}
}
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