mirror of
https://github.com/cocos/cocos-engine.git
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221 lines
8.3 KiB
TypeScript
221 lines
8.3 KiB
TypeScript
/*
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Copyright (c) 2019-2020 Xiamen Yaji Software Co., Ltd.
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https://www.cocos.com/
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated engine source code (the "Software"), a limited,
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worldwide, royalty-free, non-assignable, revocable and non-exclusive license
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to use Cocos Creator solely to develop games on your target platforms. You shall
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not use Cocos Creator software for developing other software or tools that's
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used for developing games. You are not granted to publish, distribute,
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sublicense, and/or sell copies of Cocos Creator.
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The software or tools in this License Agreement are licensed, not sold.
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Xiamen Yaji Software Co., Ltd. reserves all rights not expressly granted to you.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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import { Device, BufferUsageBit, MemoryUsageBit, Attribute, Buffer, BufferInfo, InputAssembler, InputAssemblerInfo } from '../../core/gfx';
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import { getComponentPerVertex } from './vertex-format';
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import { getError, warnID } from '../../core/platform/debug';
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import { sys } from '../../core';
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import { assertIsTrue } from '../../core/data/utils/asserts';
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interface IIARef {
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ia: InputAssembler;
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vertexBuffers: Buffer[];
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indexBuffer: Buffer;
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}
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export class MeshBuffer {
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get attributes () { return this._attributes; }
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get vertexFormatBytes () { return this._vertexFormatBytes; }
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public byteOffset = 0;
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public vertexOffset = 0;
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public indexOffset = 0;
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public vData: Float32Array = null!;
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public iData: Uint16Array = null!;
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private _dirty = false;
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private _vertexFormatBytes = 0;
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private _floatsPerVertex = 0;
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private _initVDataCount = 0;
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private _initIDataCount = 0;
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private _attributes: Attribute[] = null!;
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// InputAssembler pools for each mesh buffer, array offset correspondent
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private _iaPool: IIARef[] = [];
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private _iaInfo: InputAssemblerInfo = null!;
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private _nextFreeIAHandle = 0;
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public initialize (device: Device, attrs: Attribute[], vFloatCount: number, iCount: number) {
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this._initVDataCount = vFloatCount;
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this._initIDataCount = iCount;
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this._attributes = attrs;
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this._floatsPerVertex = getComponentPerVertex(attrs);
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assertIsTrue(this._initVDataCount / this._floatsPerVertex < 65536, getError(9005));
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if (!this.vData || !this.iData) {
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this.vData = new Float32Array(this._initVDataCount);
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this.iData = new Uint16Array(this._initIDataCount);
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}
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// Initialize the first ia
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this._iaPool.push(this.createNewIA(device));
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}
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public reset () {
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this._nextFreeIAHandle = 0;
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this._dirty = false;
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}
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public destroy () {
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this.reset();
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this._attributes = null!;
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this._iaInfo = null!;
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this.vData = null!;
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this.iData = null!;
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// Destroy InputAssemblers
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for (let i = 0; i < this._iaPool.length; ++i) {
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const iaRef = this._iaPool[i];
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if (iaRef.vertexBuffers[0]) {
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iaRef.vertexBuffers[0].destroy();
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}
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if (iaRef.indexBuffer) {
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iaRef.indexBuffer.destroy();
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}
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iaRef.ia.destroy();
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}
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this._iaPool.length = 0;
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}
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public setDirty () {
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this._dirty = true;
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}
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/**
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* @deprecated since v3.4.0, please use BufferAccessor's request
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* @see [[BufferAccessor.request]]
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*/
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public request (vertexCount: number, indexCount: number) {
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warnID(9002);
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return false;
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}
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public requireFreeIA (device: Device) {
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if (this._iaPool.length <= this._nextFreeIAHandle) {
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this._iaPool.push(this.createNewIA(device));
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}
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const ia = this._iaPool[this._nextFreeIAHandle++].ia;
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return ia;
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}
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public recycleIA (ia: InputAssembler) {
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const pool = this._iaPool;
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for (let i = 0; i < this._nextFreeIAHandle; ++i) {
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if (ia === pool[i].ia) {
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// Swap to recycle the ia
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const iaRef = pool[i];
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pool[i] = pool[--this._nextFreeIAHandle];
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pool[this._nextFreeIAHandle] = iaRef;
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return;
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}
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}
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}
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public checkCapacity (vertexCount: number, indexCount: number) {
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const maxVertex = (this.vertexOffset + vertexCount) * this._floatsPerVertex;
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const maxIndex = this.indexOffset + indexCount;
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if (maxVertex > this._initVDataCount || maxIndex > this._initIDataCount) {
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return false;
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}
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return true;
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}
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public uploadBuffers () {
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if (this.byteOffset === 0 || !this._dirty) {
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return;
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}
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// On iOS14, different IAs can not share same GPU buffer, so must submit the same date to different buffers
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// @ts-expect-error Property '__isWebIOS14OrIPadOS14Env' does not exist on 'sys'
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const iOS14 = sys.__isWebIOS14OrIPadOS14Env;
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const submitCount = iOS14 ? this._nextFreeIAHandle : 1;
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const byteCount = this.byteOffset;
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const indexCount = this.indexOffset;
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for (let i = 0; i < submitCount; ++i) {
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const iaRef = this._iaPool[i];
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// if (iOS14) {
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// indexCount = iaRef.ia.firstIndex + iaRef.ia.indexCount;
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// const maxVertex = this.iData[indexCount];
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// // Only upload as much data as needed, to avoid frequent resize, using pow2 size
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// // Wrong implementation because maxVertex might be larger than the last vertex id, hard to find the correct max vertex
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// byteCount = Math.min(this.byteOffset, nextPow2(maxVertex + 2) * this.vertexFormatBytes);
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// }
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const verticesData = new Float32Array(this.vData.buffer, 0, byteCount >> 2);
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const indicesData = new Uint16Array(this.iData.buffer, 0, indexCount);
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const vertexBuffer = iaRef.vertexBuffers[0];
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if (byteCount > vertexBuffer.size) {
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vertexBuffer.resize(byteCount);
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}
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vertexBuffer.update(verticesData);
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if (indexCount * 2 > iaRef.indexBuffer.size) {
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iaRef.indexBuffer.resize(indexCount * 2);
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}
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iaRef.indexBuffer.update(indicesData);
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}
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this._dirty = false;
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}
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private createNewIA (device: Device): IIARef {
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let ia;
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let vertexBuffers;
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let indexBuffer;
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// HACK: After sharing buffer between drawcalls, the performance degradation a lots on iOS 14 or iPad OS 14 device
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// TODO: Maybe it can be removed after Apple fixes it?
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// @ts-expect-error Property '__isWebIOS14OrIPadOS14Env' does not exist on 'sys'
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if (sys.__isWebIOS14OrIPadOS14Env || !this._iaPool[0]) {
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const vbStride = this._vertexFormatBytes = this._floatsPerVertex * Float32Array.BYTES_PER_ELEMENT;
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const ibStride = Uint16Array.BYTES_PER_ELEMENT;
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const vertexBuffer = device.createBuffer(new BufferInfo(
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BufferUsageBit.VERTEX | BufferUsageBit.TRANSFER_DST,
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MemoryUsageBit.HOST | MemoryUsageBit.DEVICE,
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vbStride,
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vbStride,
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));
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indexBuffer = device.createBuffer(new BufferInfo(
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BufferUsageBit.INDEX | BufferUsageBit.TRANSFER_DST,
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MemoryUsageBit.HOST | MemoryUsageBit.DEVICE,
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ibStride,
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ibStride,
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));
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vertexBuffers = [vertexBuffer];
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// Reuse purpose for new IAs
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this._iaInfo = new InputAssemblerInfo(this._attributes, vertexBuffers, indexBuffer);
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ia = device.createInputAssembler(this._iaInfo);
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} else {
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ia = device.createInputAssembler(this._iaInfo);
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vertexBuffers = this._iaInfo.vertexBuffers;
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indexBuffer = this._iaInfo.indexBuffer;
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}
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return {
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ia,
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vertexBuffers,
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indexBuffer,
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};
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}
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}
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