Cookie texture Import Settings window reference

The Cookie texture type formats the texture asset so it’s suitable to use as a light cookie in the Built-in Render PipelineA series of operations that take the contents of a Scene, and displays them on a screen. Unity lets you choose from pre-built render pipelines, or write your own. More info
See in Glossary. For this texture type, Unity updates the Texture Shape automatically based on the Light Type you select:

Directional Light and Spot Light cookies use the 2D shape.
Point Light cookies use the Cube shape.

Light Type

The Light Type property defines the light type that the editor applies the light cookie to. The different light types have different properties that have different recommended setup for the best effect.

Property	Description
Light Type	Select a light type from the dropdown options: Spot Light Directional Light Point Light

Spot Light

When you select this light type, Unity sets the Wrap Mode to Clamp by default. It’s recommended that you set the edges of the light cookie texture asset to solid black for the proper light effect.

Directional Light

When you select this light type, Unity sets the Wrap Mode to Repeat by default and the light cookie texture tiles.

Note: You can apply a cookie formatted for the Spot Light or Directional Light type to a Directional Light, but both have different effects. The Directional Light will repeat the Directional Light type in a tiled pattern, but will only project the Spot Light type cookie once.

Point Light

When you select this light type, you can customize the Cube shape-specific texture properties.

Properties

The following are the other Cookie texture type property settings.

Property	Description
Alpha Source	Specifies how Unity generates the alpha value for the texture asset from the texture source file. None: The texture asset doesn’t have an alpha channel, whether the texture source file has one or not. Input Texture Alpha: Unity applies the alpha channel from the texture source file to the texture asset, if the texture source file has an alpha channel. From Gray Scale: Unity generates the alpha channel for the texture asset from the average values the texture source files RGB channels.
Alpha is Transparency	Indicates whether to dilate the color channels. This helps to avoid filtering artifacts on the edges of the alpha channel if the alpha channel represents transparency.
Remove PSD Matte	Indicates whether to apply special processing for Photoshop files that use transparency (blending color pixels with white). Note: This is only available for PSD files.
Non Power of 2	Specifies how Unity scales the dimension size if the texture source file has a non-power of two (NPOT) dimension size. For more information on NPOT dimension sizes, see Importing Textures. None: Texture dimension size stays the same. To nearest: Scales the Texture to the nearest power-of-two dimension size at import time. For example, a 257x511 px Texture is scaled to 256x512 px. Note that PVRTC formats require Textures to be square (that is width equal to height), so the final dimension size is upscaled to 512x512 px. PVRTC format is deprecated. Use ASTC or ETC format instead. To larger: Scales the Texture to the power-of-two dimension size of the largest dimension size value at import time. For example, a 257x511 px Texture is scaled to 512x512 px. To smaller: Scales the Texture to the power-of-two dimension size of the smallest dimension size value at import time. For example, a 257x511 px Texture is scaled to 256x256 px.
Read/Write	Indicates whether to access the texture data from scriptsA piece of code that allows you to create your own Components, trigger game events, modify Component properties over time and respond to user input in any way you like. More info See in Glossary using Texture2D.SetPixels, Texture2D.GetPixels and other TextureAn image used when rendering a GameObject, Sprite, or UI element. Textures are often applied to the surface of a mesh to give it visual detail. More info See in Glossary methods. Internally, Unity uses a copy of the Texture data for script access, which doubles the amount of memory required for the Texture. This property is therefore disabled by default, and you should enable it only if you require script access. For more information, see Texture.isReadable.
Generate Mipmap	Indicates whether to generate a mipmap for this texture.
Mipmap Limit	Disable this option to use all mipmap levels, regardless of the Mipmap Limit settings in the Quality menu. This property only appears if you set Texture Shape to 2D or 2D Array. Other texture shapes always use all mipmap levels.
Mipmap Limit Group	Select the Mipmap Limit group this texture should be part of. The default option is None (Use Global Mipmap Limit). This property only appears if you set Texture Shape to 2D or 2D Array. Other texture shapes always use all mipmap levels.
Mipmap Filtering	Specifies the method Unity uses to filter mipmap levels and optimize image quality. This property is visible only when Generate Mipmap is enabled. Box: Makes mipmap levels smoother as they decrease in dimension size. Kaiser: Runs a sharpening algorithm on mipmap levels as they decrease in dimension size. Use this option if your textures are too blurry when far away. The algorithm is of the Kaiser Window type. For more information, see Wikipedia.
Preserve Coverage	Indicates whether the alpha channel in generated mipmaps preserves coverage during the alpha text. For more information, see TextureImporterSettings.mipMapsPreserveCoverage. This property is visible only when Generate Mipmap is enabled.
Alpha Cutoff	The reference value that controls the mipmap coverage during the alpha test. This property is visible only when Preserve Coverage is enabled.
Replicate Border	Indicates whether to stop colors bleeding out to the edge of the lower mipmap levels. This is useful for light cookies. This property is visible only when Generate Mipmap is enabled.
Fadeout to Gray	Indicates whether mipmap levels should fade to gray as the mipmap levels progress. This is useful for detail maps. The left-most scroll is the first mipmap level to begin fading out. The right-most scroll defines the mipmap level where the texture is completely grayed out. This property is visible only when Generate Mipmap is enabled.
Ignore PNG Gamma	Indicates whether to ignore the gamma attribute in PNG files. This option is only visible if the texture source file is a PNG.
Swizzle	Specifies how to order the texture source file color channel data.
Wrap Mode	Specifies how the texture behaves when it tiles. Repeat: Repeats the texture in tiles. Clamp: Stretches the texture’s edges. Mirror: Mirrors the texture at every integer boundary to create a repeating pattern. Mirror Once: Mirrors the texture once, then clamps it to edge pixels. Note: Some mobile devices don’t support Mirror Once. In this case, Unity uses Mirror instead. Per-axis: Provides options you can use to individually control how Unity wraps textures on the u-axis and v-axis.
Filter Mode	Specifies how Unity filters the texture when the texture stretches during 3D transformations. Point (no filter): The texture appears blocky up close. Bilinear: The texture appears blurry up close. Trilinear: Like Bilinear, but the texture also blurs between the different mipmap levels.
Aniso LevelThe anisotropic filtering (AF) level of a texture. Allows you to increase texture quality when viewing a texture at a steep angle. Good for floor and ground textures. More info See in Glossary	Controls the texture quality when you view the texture at a steep angle. Anisotropic filtering is good for floor and ground Textures but is resource intensive. For more information, see Importing textures.

In addition, you can use the Platform-specific overrides panel to set default options and overrides for specific platforms.

Cursor texture Import Settings window reference

Lightmap texture Import Settings window reference