/*!
 * @pixi/prepare - v6.3.0
 * Compiled Wed, 23 Mar 2022 18:58:56 UTC
 *
 * @pixi/prepare is licensed under the MIT License.
 * http://www.opensource.org/licenses/mit-license
 */
this.PIXI = this.PIXI || {};
var _pixi_prepare = (function (exports, settings, core, graphics, ticker, display, text) {
    'use strict';

    /**
     * Default number of uploads per frame using prepare plugin.
     *
     * @static
     * @memberof PIXI.settings
     * @name UPLOADS_PER_FRAME
     * @type {number}
     * @default 4
     */
    settings.settings.UPLOADS_PER_FRAME = 4;

    /*! *****************************************************************************
    Copyright (c) Microsoft Corporation. All rights reserved.
    Licensed under the Apache License, Version 2.0 (the "License"); you may not use
    this file except in compliance with the License. You may obtain a copy of the
    License at http://www.apache.org/licenses/LICENSE-2.0

    THIS CODE IS PROVIDED ON AN *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
    WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
    MERCHANTABLITY OR NON-INFRINGEMENT.

    See the Apache Version 2.0 License for specific language governing permissions
    and limitations under the License.
    ***************************************************************************** */
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    /**
     * CountLimiter limits the number of items handled by a {@link PIXI.BasePrepare} to a specified
     * number of items per frame.
     *
     * @memberof PIXI
     */
    var CountLimiter = /** @class */ (function () {
        /**
         * @param maxItemsPerFrame - The maximum number of items that can be prepared each frame.
         */
        function CountLimiter(maxItemsPerFrame) {
            this.maxItemsPerFrame = maxItemsPerFrame;
            this.itemsLeft = 0;
        }
        /** Resets any counting properties to start fresh on a new frame. */
        CountLimiter.prototype.beginFrame = function () {
            this.itemsLeft = this.maxItemsPerFrame;
        };
        /**
         * Checks to see if another item can be uploaded. This should only be called once per item.
         *
         * @return If the item is allowed to be uploaded.
         */
        CountLimiter.prototype.allowedToUpload = function () {
            return this.itemsLeft-- > 0;
        };
        return CountLimiter;
    }());

    /**
     * Built-in hook to find multiple textures from objects like AnimatedSprites.
     *
     * @private
     * @param item - Display object to check
     * @param queue - Collection of items to upload
     * @return If a PIXI.Texture object was found.
     */
    function findMultipleBaseTextures(item, queue) {
        var result = false;
        // Objects with multiple textures
        if (item && item._textures && item._textures.length) {
            for (var i = 0; i < item._textures.length; i++) {
                if (item._textures[i] instanceof core.Texture) {
                    var baseTexture = item._textures[i].baseTexture;
                    if (queue.indexOf(baseTexture) === -1) {
                        queue.push(baseTexture);
                        result = true;
                    }
                }
            }
        }
        return result;
    }
    /**
     * Built-in hook to find BaseTextures from Texture.
     *
     * @private
     * @param item - Display object to check
     * @param queue - Collection of items to upload
     * @return If a PIXI.Texture object was found.
     */
    function findBaseTexture(item, queue) {
        if (item.baseTexture instanceof core.BaseTexture) {
            var texture = item.baseTexture;
            if (queue.indexOf(texture) === -1) {
                queue.push(texture);
            }
            return true;
        }
        return false;
    }
    /**
     * Built-in hook to find textures from objects.
     *
     * @private
     * @param item - Display object to check
     * @param queue - Collection of items to upload
     * @return If a PIXI.Texture object was found.
     */
    function findTexture(item, queue) {
        if (item._texture && item._texture instanceof core.Texture) {
            var texture = item._texture.baseTexture;
            if (queue.indexOf(texture) === -1) {
                queue.push(texture);
            }
            return true;
        }
        return false;
    }
    /**
     * Built-in hook to draw PIXI.Text to its texture.
     *
     * @private
     * @param helper - Not used by this upload handler
     * @param item - Item to check
     * @return If item was uploaded.
     */
    function drawText(_helper, item) {
        if (item instanceof text.Text) {
            // updating text will return early if it is not dirty
            item.updateText(true);
            return true;
        }
        return false;
    }
    /**
     * Built-in hook to calculate a text style for a PIXI.Text object.
     *
     * @private
     * @param helper - Not used by this upload handler
     * @param item - Item to check
     * @return If item was uploaded.
     */
    function calculateTextStyle(_helper, item) {
        if (item instanceof text.TextStyle) {
            var font = item.toFontString();
            text.TextMetrics.measureFont(font);
            return true;
        }
        return false;
    }
    /**
     * Built-in hook to find Text objects.
     *
     * @private
     * @param item - Display object to check
     * @param queue - Collection of items to upload
     * @return if a PIXI.Text object was found.
     */
    function findText(item, queue) {
        if (item instanceof text.Text) {
            // push the text style to prepare it - this can be really expensive
            if (queue.indexOf(item.style) === -1) {
                queue.push(item.style);
            }
            // also push the text object so that we can render it (to canvas/texture) if needed
            if (queue.indexOf(item) === -1) {
                queue.push(item);
            }
            // also push the Text's texture for upload to GPU
            var texture = item._texture.baseTexture;
            if (queue.indexOf(texture) === -1) {
                queue.push(texture);
            }
            return true;
        }
        return false;
    }
    /**
     * Built-in hook to find TextStyle objects.
     *
     * @private
     * @param item - Display object to check
     * @param queue - Collection of items to upload
     * @return If a PIXI.TextStyle object was found.
     */
    function findTextStyle(item, queue) {
        if (item instanceof text.TextStyle) {
            if (queue.indexOf(item) === -1) {
                queue.push(item);
            }
            return true;
        }
        return false;
    }
    /**
     * The prepare manager provides functionality to upload content to the GPU.
     *
     * BasePrepare handles basic queuing functionality and is extended by
     * {@link PIXI.Prepare} and {@link PIXI.CanvasPrepare}
     * to provide preparation capabilities specific to their respective renderers.
     *
     * @example
     * // Create a sprite
     * const sprite = PIXI.Sprite.from('something.png');
     *
     * // Load object into GPU
     * app.renderer.plugins.prepare.upload(sprite, () => {
     *
     *     //Texture(s) has been uploaded to GPU
     *     app.stage.addChild(sprite);
     *
     * })
     *
     * @abstract
     * @memberof PIXI
     */
    var BasePrepare = /** @class */ (function () {
        /**
         * @param {PIXI.AbstractRenderer} renderer - A reference to the current renderer
         */
        function BasePrepare(renderer) {
            var _this = this;
            this.limiter = new CountLimiter(settings.settings.UPLOADS_PER_FRAME);
            this.renderer = renderer;
            this.uploadHookHelper = null;
            this.queue = [];
            this.addHooks = [];
            this.uploadHooks = [];
            this.completes = [];
            this.ticking = false;
            this.delayedTick = function () {
                // unlikely, but in case we were destroyed between tick() and delayedTick()
                if (!_this.queue) {
                    return;
                }
                _this.prepareItems();
            };
            // hooks to find the correct texture
            this.registerFindHook(findText);
            this.registerFindHook(findTextStyle);
            this.registerFindHook(findMultipleBaseTextures);
            this.registerFindHook(findBaseTexture);
            this.registerFindHook(findTexture);
            // upload hooks
            this.registerUploadHook(drawText);
            this.registerUploadHook(calculateTextStyle);
        }
        /**
         * Upload all the textures and graphics to the GPU.
         *
         * @param {Function|PIXI.DisplayObject|PIXI.Container|PIXI.BaseTexture|PIXI.Texture|PIXI.Graphics|PIXI.Text} item -
         *        Either the container or display object to search for items to upload, the items to upload themselves,
         *        or the callback function, if items have been added using `prepare.add`.
         * @param {Function} [done] - Optional callback when all queued uploads have completed
         */
        BasePrepare.prototype.upload = function (item, done) {
            if (typeof item === 'function') {
                done = item;
                item = null;
            }
            // If a display object, search for items
            // that we could upload
            if (item) {
                this.add(item);
            }
            // Get the items for upload from the display
            if (this.queue.length) {
                if (done) {
                    this.completes.push(done);
                }
                if (!this.ticking) {
                    this.ticking = true;
                    ticker.Ticker.system.addOnce(this.tick, this, ticker.UPDATE_PRIORITY.UTILITY);
                }
            }
            else if (done) {
                done();
            }
        };
        /**
         * Handle tick update
         *
         * @private
         */
        BasePrepare.prototype.tick = function () {
            setTimeout(this.delayedTick, 0);
        };
        /**
         * Actually prepare items. This is handled outside of the tick because it will take a while
         * and we do NOT want to block the current animation frame from rendering.
         *
         * @private
         */
        BasePrepare.prototype.prepareItems = function () {
            this.limiter.beginFrame();
            // Upload the graphics
            while (this.queue.length && this.limiter.allowedToUpload()) {
                var item = this.queue[0];
                var uploaded = false;
                if (item && !item._destroyed) {
                    for (var i = 0, len = this.uploadHooks.length; i < len; i++) {
                        if (this.uploadHooks[i](this.uploadHookHelper, item)) {
                            this.queue.shift();
                            uploaded = true;
                            break;
                        }
                    }
                }
                if (!uploaded) {
                    this.queue.shift();
                }
            }
            // We're finished
            if (!this.queue.length) {
                this.ticking = false;
                var completes = this.completes.slice(0);
                this.completes.length = 0;
                for (var i = 0, len = completes.length; i < len; i++) {
                    completes[i]();
                }
            }
            else {
                // if we are not finished, on the next rAF do this again
                ticker.Ticker.system.addOnce(this.tick, this, ticker.UPDATE_PRIORITY.UTILITY);
            }
        };
        /**
         * Adds hooks for finding items.
         *
         * @param {Function} addHook - Function call that takes two parameters: `item:*, queue:Array`
         *          function must return `true` if it was able to add item to the queue.
         * @return Instance of plugin for chaining.
         */
        BasePrepare.prototype.registerFindHook = function (addHook) {
            if (addHook) {
                this.addHooks.push(addHook);
            }
            return this;
        };
        /**
         * Adds hooks for uploading items.
         *
         * @param {Function} uploadHook - Function call that takes two parameters: `prepare:CanvasPrepare, item:*` and
         *          function must return `true` if it was able to handle upload of item.
         * @return Instance of plugin for chaining.
         */
        BasePrepare.prototype.registerUploadHook = function (uploadHook) {
            if (uploadHook) {
                this.uploadHooks.push(uploadHook);
            }
            return this;
        };
        /**
         * Manually add an item to the uploading queue.
         *
         * @param {PIXI.DisplayObject|PIXI.Container|PIXI.BaseTexture|PIXI.Texture|PIXI.Graphics|PIXI.Text|*} item - Object to
         *        add to the queue
         * @return Instance of plugin for chaining.
         */
        BasePrepare.prototype.add = function (item) {
            // Add additional hooks for finding elements on special
            // types of objects that
            for (var i = 0, len = this.addHooks.length; i < len; i++) {
                if (this.addHooks[i](item, this.queue)) {
                    break;
                }
            }
            // Get children recursively
            if (item instanceof display.Container) {
                for (var i = item.children.length - 1; i >= 0; i--) {
                    this.add(item.children[i]);
                }
            }
            return this;
        };
        /** Destroys the plugin, don't use after this. */
        BasePrepare.prototype.destroy = function () {
            if (this.ticking) {
                ticker.Ticker.system.remove(this.tick, this);
            }
            this.ticking = false;
            this.addHooks = null;
            this.uploadHooks = null;
            this.renderer = null;
            this.completes = null;
            this.queue = null;
            this.limiter = null;
            this.uploadHookHelper = null;
        };
        return BasePrepare;
    }());

    /**
     * Built-in hook to upload PIXI.Texture objects to the GPU.
     *
     * @private
     * @param renderer - instance of the webgl renderer
     * @param item - Item to check
     * @return If item was uploaded.
     */
    function uploadBaseTextures(renderer, item) {
        if (item instanceof core.BaseTexture) {
            // if the texture already has a GL texture, then the texture has been prepared or rendered
            // before now. If the texture changed, then the changer should be calling texture.update() which
            // reuploads the texture without need for preparing it again
            if (!item._glTextures[renderer.CONTEXT_UID]) {
                renderer.texture.bind(item);
            }
            return true;
        }
        return false;
    }
    /**
     * Built-in hook to upload PIXI.Graphics to the GPU.
     *
     * @private
     * @param renderer - instance of the webgl renderer
     * @param item - Item to check
     * @return If item was uploaded.
     */
    function uploadGraphics(renderer, item) {
        if (!(item instanceof graphics.Graphics)) {
            return false;
        }
        var geometry = item.geometry;
        // update dirty graphics to get batches
        item.finishPoly();
        geometry.updateBatches();
        var batches = geometry.batches;
        // upload all textures found in styles
        for (var i = 0; i < batches.length; i++) {
            var texture = batches[i].style.texture;
            if (texture) {
                uploadBaseTextures(renderer, texture.baseTexture);
            }
        }
        // if its not batchable - update vao for particular shader
        if (!geometry.batchable) {
            renderer.geometry.bind(geometry, item._resolveDirectShader(renderer));
        }
        return true;
    }
    /**
     * Built-in hook to find graphics.
     *
     * @private
     * @param item - Display object to check
     * @param queue - Collection of items to upload
     * @return if a PIXI.Graphics object was found.
     */
    function findGraphics(item, queue) {
        if (item instanceof graphics.Graphics) {
            queue.push(item);
            return true;
        }
        return false;
    }
    /**
     * The prepare plugin provides renderer-specific plugins for pre-rendering DisplayObjects. These plugins are useful for
     * asynchronously preparing and uploading to the GPU assets, textures, graphics waiting to be displayed.
     *
     * Do not instantiate this plugin directly. It is available from the `renderer.plugins` property.
     * See {@link PIXI.CanvasRenderer#plugins} or {@link PIXI.Renderer#plugins}.
     * @example
     * // Create a new application
     * const app = new PIXI.Application();
     * document.body.appendChild(app.view);
     *
     * // Don't start rendering right away
     * app.stop();
     *
     * // create a display object
     * const rect = new PIXI.Graphics()
     *     .beginFill(0x00ff00)
     *     .drawRect(40, 40, 200, 200);
     *
     * // Add to the stage
     * app.stage.addChild(rect);
     *
     * // Don't start rendering until the graphic is uploaded to the GPU
     * app.renderer.plugins.prepare.upload(app.stage, () => {
     *     app.start();
     * });
     *
     *
     * @memberof PIXI
     */
    var Prepare = /** @class */ (function (_super) {
        __extends(Prepare, _super);
        /**
         * @param {PIXI.Renderer} renderer - A reference to the current renderer
         */
        function Prepare(renderer) {
            var _this = _super.call(this, renderer) || this;
            _this.uploadHookHelper = _this.renderer;
            // Add textures and graphics to upload
            _this.registerFindHook(findGraphics);
            _this.registerUploadHook(uploadBaseTextures);
            _this.registerUploadHook(uploadGraphics);
            return _this;
        }
        return Prepare;
    }(BasePrepare));

    /**
     * TimeLimiter limits the number of items handled by a {@link PIXI.BasePrepare} to a specified
     * number of milliseconds per frame.
     *
     * @memberof PIXI
     */
    var TimeLimiter = /** @class */ (function () {
        /** @param maxMilliseconds - The maximum milliseconds that can be spent preparing items each frame. */
        function TimeLimiter(maxMilliseconds) {
            this.maxMilliseconds = maxMilliseconds;
            this.frameStart = 0;
        }
        /** Resets any counting properties to start fresh on a new frame. */
        TimeLimiter.prototype.beginFrame = function () {
            this.frameStart = Date.now();
        };
        /**
         * Checks to see if another item can be uploaded. This should only be called once per item.
         *
         * @return - If the item is allowed to be uploaded.
         */
        TimeLimiter.prototype.allowedToUpload = function () {
            return Date.now() - this.frameStart < this.maxMilliseconds;
        };
        return TimeLimiter;
    }());

    exports.BasePrepare = BasePrepare;
    exports.CountLimiter = CountLimiter;
    exports.Prepare = Prepare;
    exports.TimeLimiter = TimeLimiter;

    return exports;

}({}, PIXI, PIXI, PIXI, PIXI, PIXI, PIXI));
Object.assign(this.PIXI, _pixi_prepare);
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