101 lines
3.0 KiB
JavaScript
101 lines
3.0 KiB
JavaScript
define([
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'../Core/Check',
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'../Core/defaultValue',
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'../Core/defined',
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'../Core/defineProperties',
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'../Core/destroyObject',
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'../Core/DeveloperError',
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'./ContextLimits',
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'./RenderbufferFormat'
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], function(
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Check,
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defaultValue,
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defined,
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defineProperties,
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destroyObject,
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DeveloperError,
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ContextLimits,
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RenderbufferFormat) {
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'use strict';
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/**
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* @private
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*/
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function Renderbuffer(options) {
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options = defaultValue(options, defaultValue.EMPTY_OBJECT);
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//>>includeStart('debug', pragmas.debug);
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Check.defined('options.context', options.context);
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//>>includeEnd('debug');
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var context = options.context;
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var gl = context._gl;
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var maximumRenderbufferSize = ContextLimits.maximumRenderbufferSize;
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var format = defaultValue(options.format, RenderbufferFormat.RGBA4);
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var width = defined(options.width) ? options.width : gl.drawingBufferWidth;
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var height = defined(options.height) ? options.height : gl.drawingBufferHeight;
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//>>includeStart('debug', pragmas.debug);
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if (!RenderbufferFormat.validate(format)) {
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throw new DeveloperError('Invalid format.');
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}
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Check.typeOf.number.greaterThan('width', width, 0);
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if (width > maximumRenderbufferSize) {
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throw new DeveloperError('Width must be less than or equal to the maximum renderbuffer size (' + maximumRenderbufferSize + '). Check maximumRenderbufferSize.');
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}
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Check.typeOf.number.greaterThan('height', height, 0);
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if (height > maximumRenderbufferSize) {
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throw new DeveloperError('Height must be less than or equal to the maximum renderbuffer size (' + maximumRenderbufferSize + '). Check maximumRenderbufferSize.');
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}
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//>>includeEnd('debug');
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this._gl = gl;
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this._format = format;
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this._width = width;
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this._height = height;
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this._renderbuffer = this._gl.createRenderbuffer();
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gl.bindRenderbuffer(gl.RENDERBUFFER, this._renderbuffer);
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gl.renderbufferStorage(gl.RENDERBUFFER, format, width, height);
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gl.bindRenderbuffer(gl.RENDERBUFFER, null);
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}
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defineProperties(Renderbuffer.prototype, {
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format: {
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get : function() {
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return this._format;
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}
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},
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width: {
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get : function() {
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return this._width;
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}
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},
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height: {
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get : function() {
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return this._height;
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}
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}
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});
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Renderbuffer.prototype._getRenderbuffer = function() {
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return this._renderbuffer;
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};
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Renderbuffer.prototype.isDestroyed = function() {
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return false;
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};
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Renderbuffer.prototype.destroy = function() {
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this._gl.deleteRenderbuffer(this._renderbuffer);
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return destroyObject(this);
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};
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return Renderbuffer;
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});
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