molstar
Version:
A comprehensive macromolecular library.
62 lines • 2.2 kB
JavaScript
;
/**
* Copyright (c) 2018-2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
*
* @author Alexander Rose <alexander.rose@weirdbyte.de>
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.createVertexArray = void 0;
var id_factory_1 = require("../../mol-util/id-factory");
var getNextVertexArrayId = (0, id_factory_1.idFactory)();
function getVertexArray(extensions) {
var vertexArrayObject = extensions.vertexArrayObject;
if (!vertexArrayObject) {
throw new Error('VertexArrayObject not supported');
}
var vertexArray = vertexArrayObject.createVertexArray();
if (!vertexArray) {
throw new Error('Could not create WebGL vertex array');
}
return vertexArray;
}
function getVertexArrayObject(extensions) {
var vertexArrayObject = extensions.vertexArrayObject;
if (vertexArrayObject === null) {
throw new Error('VertexArrayObject not supported');
}
return vertexArrayObject;
}
function createVertexArray(extensions, program, attributeBuffers, elementsBuffer) {
var id = getNextVertexArrayId();
var vertexArray = getVertexArray(extensions);
var vertexArrayObject = getVertexArrayObject(extensions);
function update() {
vertexArrayObject.bindVertexArray(vertexArray);
if (elementsBuffer)
elementsBuffer.bind();
program.bindAttributes(attributeBuffers);
vertexArrayObject.bindVertexArray(null);
}
update();
var destroyed = false;
return {
id: id,
bind: function () {
vertexArrayObject.bindVertexArray(vertexArray);
},
update: update,
reset: function () {
vertexArray = getVertexArray(extensions);
vertexArrayObject = getVertexArrayObject(extensions);
update();
},
destroy: function () {
if (destroyed)
return;
vertexArrayObject.deleteVertexArray(vertexArray);
destroyed = true;
}
};
}
exports.createVertexArray = createVertexArray;
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