How to Download and Use Color LUTs in Spark AR Studio
Spark AR Studio is a powerful tool for creating augmented reality effects for Facebook and Instagram. One of the features that can make your effects stand out is color grading, which is the process of adjusting the colors and tones of your images to create a certain mood, style, or quality. In this article, we will show you how to download and use color LUTs (lookup textures) in Spark AR Studio, which are tables of RGB color values that can quickly create color-graded effects across the whole scene.
What are Color LUTs and Why Use Them?
Color LUTs are tables of RGB color values that can create color-graded effects
A color LUT (lookup texture) is a table of RGB color values that maps an input color to an output color. For example, a color LUT can map a blue input color to a yellow output color, creating a warm-toned effect. In Spark AR Studio, you can use color LUTs to apply a color filter over the camera texture or any other texture in your scene.
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Color LUTs can enhance the mood, style, and quality of your effects
By using color LUTs, you can easily change the look and feel of your effects without having to adjust individual parameters or write complex code. You can use color LUTs to create effects that match different themes, seasons, genres, or moods. For example, you can use a sepia-toned color LUT to create a vintage effect, or a blue-tinted color LUT to create a cold or futuristic effect. You can also use color LUTs to improve the quality of your effects by correcting exposure, contrast, saturation, or white balance.
How to Download Color LUTs from AR Library
Open AR Library from the toolbar or the Assets panel
AR Library is a collection of free assets that you can use in your Spark AR Studio projects. You can access it from the toolbar by clicking the AR Library icon, or from the Assets panel by clicking the Add Asset button and selecting From AR Library.
Browse or search for color LUTs in the Color LUTs category
In the AR Library window, you can browse or search for different types of assets, such as 3D objects, materials, textures, sounds, scripts, and more. To find color LUTs, click on the Color LUTs category on the left side of the window. You will see a list of color LUTs that you can preview and download. You can also use the search bar to look for specific color LUTs by name or keyword.
Click Import Free to add the color LUT to your project
Once you find a color LUT that you like, you can click on it to see more details, such as the name, description, size, and license. To add the color LUT to your project, click on the Import Free button at the bottom of the window. The color LUT will be downloaded and imported to your Assets panel as a texture asset. You can rename it or delete it if needed.
How to import color lut from ar library in spark ar studio
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How to apply a color lut to the whole scene in spark ar
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Spark ar community: tips and tricks for using color luts
Spark ar documentation: color luts (lookup textures)
Spark ar blog: how to create stunning color filters with color luts
Spark ar youtube channel: how to make a color lut effect in 10 minutes
Spark ar facebook group: share your color lut effects and get feedback
Spark ar reddit: ask questions and get answers about color luts
Spark ar pinterest: discover and save ideas for color lut effects
Spark ar twitter: follow the latest news and updates on color luts
Spark ar instagram: see the best examples of color lut effects and hashtags
Spark ar tiktok: watch and learn from short videos on how to use color luts
Spark ar udemy: enroll in a course on how to create amazing color filters with color luts
Spark ar skillshare: learn from experts on how to master color grading with color luts
Spark ar medium: read stories and tutorials on how to use color luts effectively
Spark ar quora: find answers to common questions about color luts and spark ar studio
Spark ar stackoverflow: get help from developers on how to solve problems with color luts and spark ar studio code editor
How to Import Your Own Color LUTs
Create or find a color LUT PNG file in square or row format
If you want to use your own color LUTs in Spark AR Studio, you need to create or find a color LUT PNG file that is compatible with the software. A color LUT PNG file is an image file that contains a table of RGB color values arranged in a grid. There are two formats that Spark AR Studio supports: square and row. A square color LUT has a grid of 16 x 16 cells, each containing a different RGB color value. A row color LUT has a single row of 256 cells, each containing a different RGB color value. You can create your own color LUT PNG files using software such as Photoshop, Lightroom, or GIMP, or you can find free or paid color LUT PNG files online.
Click Add Asset and select Import, then Color LUT
To import your own color LUT PNG file to your project, click on the Add Asset button in the Assets panel and select Import from the menu. Then, choose Color LUT from the submenu. A file browser window will open where you can select your color LUT PNG file from your computer.
Choose your file from your computer and click Open
Navigate to the folder where you saved your color LUT PNG file and select it. Then, click on the Open button at the bottom of the window. The color LUT PNG file will be imported to your Assets panel as a texture asset. You can rename it or delete it if needed.
How to Apply a Color LUT to the Whole Scene
Right-click the color LUT in the Assets panel and select Actions, then Apply to Camera
To apply a color LUT to the whole scene, you need to use the Patch Editor, which is a visual programming tool that lets you create logic and interactivity for your effects. To open the Patch Editor, click on the View menu and select Show/Hide Patch Editor. Then, right-click on the color LUT texture asset in the Assets panel and select Actions from the menu. Then, choose Apply to Camera from the submenu. This will create a patch graph in the Patch Editor that connects the color LUT texture asset to the camera texture.
A patch graph will be created automatically in the Patch Editor
A patch graph is a network of patches that represent different inputs, outputs, and functions in your effect. In this case, a patch graph will be created automatically that consists of four patches: cameraTexture0 (the input camera texture), texture0 (the input color LUT texture), colorLUTShader (the function that applies the color LUT to the camera texture), and renderPass (the output render pass). The patches will be connected by wires that represent data flow.
Adjust the GridSize input of the colorLUTShader patch if needed
The GridSize input of the colorLUTShader patch determines the format of the color LUT texture. If you are using a square color LUT, you need to set the GridSize input to 16. If you are using a row color LUT, you need to set the GridSize input to 256. You can adjust the GridSize input by double-clicking on the patch and typing the value, or by dragging the slider.
How to Add a Picker UI for Multiple Color LUTs
Delete the patch that represents the color LUT in the Patch Editor
If you want to add a picker UI that lets the user choose from multiple color LUTs, you need to delete the patch that represents the color LUT texture asset in the Patch Editor. To do this, right-click on the patch and select Delete from the menu. This will disconnect the patch from the patch graph and remove it from the Patch Editor.
Click Add Asset and select Native UI Picker
A native UI picker is a user interface element that lets the user select from different options by tapping on buttons. To add a native UI picker to your project, click on the Add Asset button in the Assets panel and select Native UI Picker from the menu. A native UI picker asset will be added to your Assets panel and a patch graph will be created in the Patch Editor that connects the native UI picker asset to a switch patch.
Connect the patches as shown in the tutorial
To connect the patches for the native UI picker, you need to follow the steps shown in this tutorial: You will need to add more patches for each color LUT texture asset that you want to include in the picker, and connect them to the switch patch. You will also need to connect the output of the switch patch to the texture input of the colorLUTShader patch.
Customize the icons and labels for each button
To customize the icons and labels for each button in the native UI picker, you need to edit the properties of the native UI picker asset in the Inspector panel. You can change the number of buttons, their icons, their labels, their colors, and their positions. You can also change the background color and opacity of the picker.
Conclusion
Color LUTs are a powerful tool for creating stunning effects in Spark AR Studio
In this article, we have shown you how to download and use color LUTs in Spark AR Studio. Color LUTs are tables of RGB color values that can create color-graded effects across the whole scene. They can enhance the mood, style, and quality of your effects without having to adjust individual parameters or write complex code.
You can download color LUTs from AR Library or import your own
You can download color LUTs from AR Library, which is a collection of free assets that you can use in your Spark AR Studio projects. You can browse or search for different types of color LUTs and import them to your project with one click. You can also import your own color LUT PNG files that you create or find online. You can use square or row format for your color LUT PNG files.
You can apply a color LUT to the whole scene or use a picker UI for more options
You can apply a color LUT to the whole scene by using the Patch Editor, which is a visual programming tool that lets you create logic and interactivity for your effects. You can right-click on the color LUT texture asset in the Assets panel and select Apply to Camera, which will create a patch graph that connects the color LUT texture asset to the camera texture. You can also add a picker UI that lets the user choose from multiple color LUTs by using the Native UI Picker asset and connecting the patches as shown in the tutorial. You can customize the icons and labels for each button in the picker.
FAQs
What is the difference between square and row color LUTs?
Square and row color LUTs are two formats of color LUT PNG files that Spark AR Studio supports. A square color LUT has a grid of 16 x 16 cells, each containing a different RGB color value. A row color LUT has a single row of 256 cells, each containing a different RGB color value. The difference is in how the color values are arranged and accessed by the software. You need to set the GridSize input of the colorLUTShader patch accordingly to match the format of your color LUT PNG file.
How can I create my own color LUTs?
You can create your own color LUTs using software such as Photoshop, Lightroom, or GIMP. You can use these software to adjust the colors and tones of an image and export it as a color LUT PNG file in square or row format. You can also use online tools such as or to generate color LUT PNG files from presets or custom settings.
How can I preview the effect of a color LUT on my scene?
You can preview the effect of a color LUT on your scene by using the Simulator window, which is a live preview of your effect on different devices and platforms. To open the Simulator window, click on the View menu and select Show/Hide Simulator. You can also use the Mirror app on your mobile device to see how your effect looks in real time.
How can I remove a color LUT from my effect?
To remove a color LUT from your effect, you need to delete the patch graph that connects the color LUT texture asset to the camera texture in the Patch Editor. To do this, right-click on any patch in the patch graph and select Delete All from the menu. This will disconnect and remove all the patches in the patch graph from the Patch Editor. You can also delete the color LUT texture asset from your Assets panel if you don't need it anymore.
How can I combine multiple color LUTs in one effect?
To combine multiple color LUTs in one effect, you need to use multiple render passes and blend modes in the Patch Editor. A render pass is a layer of rendering that applies an effect to an input texture and outputs a new texture. A blend mode is a function that determines how two textures are combined together. You can use render passes and blend modes to apply different color LUTs to different parts of your scene or to mix them together. For example, you can use a render pass with an alpha mask texture to apply a color LUT only to certain areas of your scene, or you can use a render pass with an overlay blend mode to blend two color LUTs together. 44f88ac181
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