StackGenVis: Alignment of Data, Algorithms, and Models for Stacking Ensemble Learning Using Performance Metrics https://doi.org/10.1109/TVCG.2020.3030352
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StackGenVis/frontend/node_modules/gl-vao/lib/do-bind.js

54 lines
1.6 KiB

4 years ago
"use strict"
function doBind(gl, elements, attributes) {
if(elements) {
elements.bind()
} else {
gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, null)
}
var nattribs = gl.getParameter(gl.MAX_VERTEX_ATTRIBS)|0
if(attributes) {
if(attributes.length > nattribs) {
throw new Error("gl-vao: Too many vertex attributes")
}
for(var i=0; i<attributes.length; ++i) {
var attrib = attributes[i]
if(attrib.buffer) {
var buffer = attrib.buffer
var size = attrib.size || 4
var type = attrib.type || gl.FLOAT
var normalized = !!attrib.normalized
var stride = attrib.stride || 0
var offset = attrib.offset || 0
buffer.bind()
gl.enableVertexAttribArray(i)
gl.vertexAttribPointer(i, size, type, normalized, stride, offset)
} else {
if(typeof attrib === "number") {
gl.vertexAttrib1f(i, attrib)
} else if(attrib.length === 1) {
gl.vertexAttrib1f(i, attrib[0])
} else if(attrib.length === 2) {
gl.vertexAttrib2f(i, attrib[0], attrib[1])
} else if(attrib.length === 3) {
gl.vertexAttrib3f(i, attrib[0], attrib[1], attrib[2])
} else if(attrib.length === 4) {
gl.vertexAttrib4f(i, attrib[0], attrib[1], attrib[2], attrib[3])
} else {
throw new Error("gl-vao: Invalid vertex attribute")
}
gl.disableVertexAttribArray(i)
}
}
for(; i<nattribs; ++i) {
gl.disableVertexAttribArray(i)
}
} else {
gl.bindBuffer(gl.ARRAY_BUFFER, null)
for(var i=0; i<nattribs; ++i) {
gl.disableVertexAttribArray(i)
}
}
}
module.exports = doBind