91 lines
2.3 KiB
JavaScript
91 lines
2.3 KiB
JavaScript
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define([
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'../Core/defined',
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'../Core/defineProperties',
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'../Core/destroyObject'
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], function(
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defined,
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defineProperties,
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destroyObject) {
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'use strict';
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/**
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* @private
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*/
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function TextureCache() {
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this._textures = {};
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this._numberOfTextures = 0;
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this._texturesToRelease = {};
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}
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defineProperties(TextureCache.prototype, {
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numberOfTextures : {
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get : function() {
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return this._numberOfTextures;
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}
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}
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});
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TextureCache.prototype.getTexture = function(keyword) {
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var cachedTexture = this._textures[keyword];
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if (!defined(cachedTexture)) {
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return undefined;
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}
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// No longer want to release this if it was previously released.
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delete this._texturesToRelease[keyword];
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++cachedTexture.count;
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return cachedTexture.texture;
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};
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TextureCache.prototype.addTexture = function(keyword, texture) {
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var cachedTexture = {
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texture : texture,
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count : 1
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};
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texture.finalDestroy = texture.destroy;
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var that = this;
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texture.destroy = function() {
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if (--cachedTexture.count === 0) {
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that._texturesToRelease[keyword] = cachedTexture;
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}
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};
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this._textures[keyword] = cachedTexture;
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++this._numberOfTextures;
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};
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TextureCache.prototype.destroyReleasedTextures = function() {
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var texturesToRelease = this._texturesToRelease;
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for (var keyword in texturesToRelease) {
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if (texturesToRelease.hasOwnProperty(keyword)) {
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var cachedTexture = texturesToRelease[keyword];
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delete this._textures[keyword];
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cachedTexture.texture.finalDestroy();
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--this._numberOfTextures;
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}
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}
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this._texturesToRelease = {};
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};
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TextureCache.prototype.isDestroyed = function() {
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return false;
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};
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TextureCache.prototype.destroy = function() {
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var textures = this._textures;
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for (var keyword in textures) {
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if (textures.hasOwnProperty(keyword)) {
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textures[keyword].texture.finalDestroy();
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}
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}
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return destroyObject(this);
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};
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return TextureCache;
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});
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