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{"version":3,"file":"ParticleBuffer.mjs","sources":["../src/ParticleBuffer.ts"],"sourcesContent":["import { Buffer, Geometry, TYPES, utils } from '@pixi/core';\n\nimport type { Sprite } from '@pixi/sprite';\nimport type { IParticleRendererProperty } from './ParticleRenderer';\n\n/*\n * @author Mat Groves\n *\n * Big thanks to the very clever Matt DesLauriers <mattdesl> https://github.com/mattdesl/\n * for creating the original PixiJS version!\n * Also a thanks to https://github.com/bchevalier for tweaking the tint and alpha so that\n * they now share 4 bytes on the vertex buffer\n *\n * Heavily inspired by LibGDX's ParticleBuffer:\n * https://github.com/libgdx/libgdx/blob/master/gdx/src/com/badlogic/gdx/graphics/g2d/ParticleBuffer.java\n */\n\n/**\n * The particle buffer manages the static and dynamic buffers for a particle container.\n * @private\n * @memberof PIXI\n */\nexport class ParticleBuffer\n{\n public geometry: Geometry;\n public staticStride: number;\n public staticBuffer: Buffer;\n public staticData: Float32Array;\n public staticDataUint32: Uint32Array;\n public dynamicStride: number;\n public dynamicBuffer: Buffer;\n public dynamicData: Float32Array;\n public dynamicDataUint32: Uint32Array;\n public _updateID: number;\n\n /** Holds the indices of the geometry (quads) to draw. */\n indexBuffer: Buffer;\n\n /** The number of particles the buffer can hold. */\n private size: number;\n\n /** A list of the properties that are dynamic. */\n private dynamicProperties: IParticleRendererProperty[];\n\n /** A list of the properties that are static. */\n private staticProperties: IParticleRendererProperty[];\n\n /**\n * @param {object} properties - The properties to upload.\n * @param {boolean[]} dynamicPropertyFlags - Flags for which properties are dynamic.\n * @param {number} size - The size of the batch.\n */\n constructor(properties: IParticleRendererProperty[], dynamicPropertyFlags: boolean[], size: number)\n {\n this.geometry = new Geometry();\n\n this.indexBuffer = null;\n\n this.size = size;\n this.dynamicProperties = [];\n this.staticProperties = [];\n\n for (let i = 0; i < properties.length; ++i)\n {\n let property = properties[i];\n\n // Make copy of properties object so that when we edit the offset it doesn't\n // change all other instances of the object literal\n property = {\n attributeName: property.attributeName,\n size: property.size,\n uploadFunction: property.uploadFunction,\n type: property.type || TYPES.FLOAT,\n offset: property.offset,\n };\n\n if (dynamicPropertyFlags[i])\n {\n this.dynamicProperties.push(property);\n }\n else\n {\n this.staticProperties.push(property);\n }\n }\n\n this.staticStride = 0;\n this.staticBuffer = null;\n this.staticData = null;\n this.staticDataUint32 = null;\n\n this.dynamicStride = 0;\n this.dynamicBuffer = null;\n this.dynamicData = null;\n this.dynamicDataUint32 = null;\n\n this._updateID = 0;\n\n this.initBuffers();\n }\n\n /** Sets up the renderer context and necessary buffers. */\n private initBuffers(): void\n {\n const geometry = this.geometry;\n\n let dynamicOffset = 0;\n\n this.indexBuffer = new Buffer(utils.createIndicesForQuads(this.size), true, true);\n geometry.addIndex(this.indexBuffer);\n\n this.dynamicStride = 0;\n\n for (let i = 0; i < this.dynamicProperties.length; ++i)\n {\n const property = this.dynamicProperties[i];\n\n property.offset = dynamicOffset;\n dynamicOffset += property.size;\n this.dynamicStride += property.size;\n }\n\n const dynBuffer = new ArrayBuffer(this.size * this.dynamicStride * 4 * 4)
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