Sprite atlas

The original version 1 of the Sprite A 2D graphic objects. If you sprite atlas used to working in 3D, Sprites are essentially just standard textures but there are special techniques for combining and managing sprite textures for efficiency and convenience during development. More info See in Glossary Atlas system packs textures from sprites, sprites within textures, sprite atlas, and sprites in folders into an Atlas Texture. It packs these textures when it enters Play mode, or when it builds the Player or an AssetBundle.

In computer graphics , a texture atlas also called a spritesheet or an image sprite in 2d game development is an image containing multiple smaller images, usually packed together to reduce overall dimensions. In an application where many small textures are used frequently, it is often more efficient to store the textures in a texture atlas which is treated as a single unit by the graphics hardware. Careful alignment may be needed to avoid bleeding between sub textures when used with mipmapping and texture compression. In web development , images are packed into a sprite sheet to reduce the number of image resources that need to be fetched in order to display a page. Contents move to sidebar hide. Article Talk.

Sprite atlas

Imagine you have a game in Unity where you use thousands of materials all across the project, whether for characters, NPCs, environments, UI, or anything else. In such cases, generating a lot of textures or meshes — or applying materials with multiple shaders — might increase something called "Draw Calls" in your game. A Draw Call is a call to the graphics API to draw an object — like a mesh — and draw call batches are the calls done to the graphics API in bulk to draw objects together. Having too many batches of draw calls in your game might slow down your game. Even worse, it might significantly affect your FPS and make your game unplayable if it isn't managed well. So, to solve these issues, we will have to use an optimization technique called Draw Call Batching. Draw call batching is a form of draw call optimization that lets you combine meshes and helps Unity render them in fewer draw calls. So, in this blog, we will be optimizing draw calls of a simple UI that uses multiple images and materials using a sprite atlas. Our goal is to decrease the draw call to the least possible number. To have a basic idea of what draw calls do, I have created a simple Unity scene with multiple UI images around them. As you can see in the screenshot above, I have created 12 image components. Each image has its own sprite texture. That has resulted in Unity generating 12 draw batches because it treats every object as an independent texture with its own unique material. So, to optimize this, we will have to create a sprite atlas that contains the collection of images we are going to use and look at the difference that process makes on the draw batch number.

In web developmentsprite atlas, images are packed into a sprite sheet to reduce the number of image resources that need to be fetched in order to display a page. Large image containing an atlas of sub-images. Sprite sheet for the video game Blades of Exile.

Implemented in: UnityEngine. Thank you for helping us improve the quality of Unity Documentation. Although we cannot accept all submissions, we do read each suggested change from our users and will make updates where applicable. For some reason your suggested change could not be submitted. And thank you for taking the time to help us improve the quality of Unity Documentation. Sprite Atlas is an asset created within Unity.

Unity creates the Sprite Atlas in the Assets folder, with the file extension. Version: Language : English. Unity Manual. Unity User Manual Sprite Atlas. Master and Variant Sprite Atlases.

Sprite atlas

Follow the steps below to create a Sprite A 2D graphic objects. If you are used to working in 3D, Sprites are essentially just standard textures but there are special techniques for combining and managing sprite textures for efficiency and convenience during development. More info See in Glossary Atlas asset and how to select different options and features when you include a sprite atlas in your projects. You must have the 2D Sprite package installed to have the option to create a Sprite Atlas asset. This package is part of the 2D feature set and is automatically installed if you select the 2D template when creating a new project. The Objects for Packing list displays the currently selected items that are in the Sprite Atlas. You can place Texture2D and Sprite Assets in this list. Drag and drop a folder directly onto the list to automatically add all valid content within the folder to the list only the folder appears on the list. Select the Sprite Atlas Asset and find the Objects For Packing list in its Inspector A Unity window that displays information about the currently selected GameObject, asset or project settings, allowing you to inspect and edit the values. More info See in Glossary window.

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Each image has its own sprite texture. Hidden categories: Articles with short description Short description matches Wikidata. If you want details on what each sprite setting does, you can check my blog about texture import settings in Unity. Select how Unity filters packed Textures when they stretch during transformations. If your images get cut out or rotate in weird directions, disable Allow Rotation and Tight Packin g from the sprite atlas settings. Unity User Manual To create a sprite atlas, you will need the latest Sprite 2D library package. Unity Manual. Check this box to pack Sprites based on their Sprite outlines instead of the default rectangle outline. InstantiateAsync Captures a snapshot of the original object that must be related to some GameObject and returns the AsyncInstantiateOperation. This is a buffer to prevent pixel The smallest unit in a computer image.

A 2D project uses sprites A 2D graphic objects.

This was an example of a simple game optimization technique using sprite atlas. Also referred to as a texture atlas, image sprite, sprite sheet or packed texture. Download as PDF Printable version. Each image has its own sprite texture. Imagine you have a game in Unity where you use thousands of materials all across the project, whether for characters, NPCs, environments, UI, or anything else. For more information, refer to Platform-specific overrides. Categories : 3D rendering Computer graphics. It is part of the built-in sprite packing solution. And thank you for taking the time to help us improve the quality of Unity Documentation. SetPixels , and other Texture2D functions. More info See in Glossary as well. Sprite Atlas V2 is automatically enabled by default by the Editor from Unity Thank you for helping us improve the quality of Unity Documentation. If your images get cut out or rotate in weird directions, disable Allow Rotation and Tight Packin g from the sprite atlas settings.