mirror of
https://github.com/cocos/cocos-engine.git
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57 lines
2.4 KiB
TypeScript
57 lines
2.4 KiB
TypeScript
/*
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Copyright (c) 2021 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 { Attribute, Device } from '../../core/gfx';
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import type { MeshBuffer } from './mesh-buffer';
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import { getComponentPerVertex } from './vertex-format';
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export class BufferAccessor {
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public get attributes (): Readonly<Attribute[]> { return this._attributes; }
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public get vertexFormatBytes () { return this._vertexFormatBytes; }
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public get floatsPerVertex () { return this._floatsPerVertex; }
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protected _device: Device = null!
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protected _attributes: Attribute[] = null!;
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protected _vertexFormatBytes: number;
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protected _floatsPerVertex: number;
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protected _buffers: MeshBuffer[] = [];
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constructor (device: Device, attributes: Attribute[]) {
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this._device = device;
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this._attributes = attributes;
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this._floatsPerVertex = getComponentPerVertex(attributes);
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this._vertexFormatBytes = this._floatsPerVertex * Float32Array.BYTES_PER_ELEMENT;
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}
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public initialize () {}
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public reset () {}
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public request (vertexCount = 4, indexCount = 6) {}
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public appendBuffers (vertices: Float32Array, indices: Uint16Array) {}
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public uploadBuffers () {}
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public destroy () {
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this._attributes.length = 0;
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}
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}
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