纹理导入指南
You can import textures in convenient formats (such as .tga, .jpg, .png, .hdr, etc.). As you import a texture via the Asset Browser, using drag and drop or the Import button, the following import settings are displayed. These settings can also be changed later via the Parameters window.您可以以方便的格式（例如.tga, .jpg, .png, .hdr,等）导入纹理。使用拖放或Import按钮通过Asset Browser导入纹理时，将显示以下导入设置。这些设置也可以稍后通过Parameters窗口进行更改
Import settings for a texture asset导入纹理资产的设置Common Parameters常用参数#
| Unchanged |
注意
When this option is enabled, the texture is used by the Engine and added to the final build "as is". E.g., you can use this option for your custom HDR texture.启用此选项后，引擎将使用纹理并将纹理“按原样”添加到最终版本中。例如，您可以将此选项用于自定义HDR纹理。 |
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| Mipmaps SRGB Correction | Enables sRGB gamma correction for mipmaps.为Mipmap启用sRGB伽玛校正。 |
Resolution Parameters分辨率参数#
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If the original width or height is not equal to a power of 2 and is selected as an import setting, the imported texture would fail to be compressed.如果原始宽度或高度不等于2的幂，并且被选择为导入设置，则导入的纹理将无法压缩。Other Parameters其他参数#
Texture Postfixes纹理后缀#
Texture postfix is important, as it defines compression algorithms and color channels to be used. Postfixes correspond to certain texture presets. The list of available postfixes includes the following ones:纹理后缀很重要，因为它定义了要使用的压缩算法和颜色通道。后缀对应于某些纹理预设。可用的后缀列表包括以下内容：
- texture_alb for albedo textures (RGB — color, A — opacity).texture_alb为反照率纹理（RGB —颜色，A —不透明度）。
- texture_d for diffuse textures (RGB — color, A — opacity).texture_d为扩散纹理（RGB —颜色，A —不透明度）。
- texture_n for normal textures (RG — surface normal components).texture_n为普通的纹理（RG —表面法线分量）。
- texture_nrgb for normal textures that store opacity in the B channel (RG — normals, B — opacity.texture_nrgb为普通的在B通道中存储不透明度的纹理（RG-法线，B-不透明度。
- texture_s for specular textures (RGB — specular, A — gloss).texture_s为镜面纹理（RGB-高光，A-光泽）。
- texture_sh for shading textures (R — metalness, G — roughness, B — specular, A — microfiber).texture_sh为阴影纹理（R-金属度，G-粗糙度，B-镜面反射，A-超细纤维）。
- texture_a for ambient occlusion textures (R — AO map).texture_a为环境光遮蔽纹理（R — AO贴图）。
- texture_h for parallax height maps (parallax effect) (R — height map).texture_h为视差高度图（视差效果）（R-高度图）。
- texture_l for light maps (RGB — light color).texture_l为光贴图（RGB —浅色）。
- texture_e for emission textures (RGB — glow color).texture_e为排放纹理（RGB —发光颜色）。
- texture_m for image mask textures.texture_m用于图像蒙版纹理。
- texture_c for cubemap textures used as the world environment or environment probe.texture_c用作世界的立方体贴图纹理环境或者环境探针。
- texture_vp for 3D lighting textures used for voxel probes.用于3D的texture_vp照明纹理用于体素探针。
- texture_v for 3D textures used for volumetric effects or color variations.texture_v用于用于体积效果或颜色变化的3D纹理。
- texture_ies for IES light profile textures.IES灯光轮廓纹理的texture_ies。
You can define default import options for a texture by simply adding a postfix to its name.您可以通过简单地在纹理名称后添加后缀来定义纹理的默认导入选项。
When you import a texture with a postfix, make sure that it corresponds to the texture's type and purpose. E.g. if you name an albedo texture as "color_n.jpg", it will be imported as a 2-channel normal map by default.使用后缀导入纹理时，请确保其与纹理的类型和用途相对应。例如，如果您将反照率纹理命名为“ color_n.jpg”，则默认情况下会将其作为2通道法线贴图导入。Assigning Imported Texture分配导入的纹理#
To assign the imported texture to a material, you can choose one of the following ways:要将导入的纹理分配给材质，可以选择以下方式之一：
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Drag the icon of the texture asset from the Asset Browser window to the destination field in the Parameters window.将纹理资产的图标从Asset Browser窗口拖动到Parameters窗口的目标字段。
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Use the button next to the destination field in the Parameters window to select the desired asset.
使用Parameters窗口中目标字段旁边的按钮选择所需的资产。
- Type the name of the asset to the destination field in the Parameters window manually. If an asset with the specified name exists in the project it will be shown while you type.
在[目标]栏位中输入资产名称。Parameters手动窗口。如果项目中存在具有指定名称的资产，则在键入时将显示该资产。
Texture Conversion纹理转换#
Texture Conversion is a feature that allows optimizing a texture at a later stage of the project without changing the asset GUID, thus preserving all necessary links. Any texture asset used in your project can be converted to one of the available formats.纹理转换是一项功能，它允许在项目的后期阶段优化纹理，而无需更改资产GUID，从而保留所有必要的链接。项目中使用的任何纹理资产都可以转换为可用格式之一。
To convert a texture, right-click the texture in the Asset Browser to open the context menu, and select Convert To and the required file format. The file immediately will be converted to a selected format.要转换纹理，请在Asset Browser中右键单击该纹理以打开上下文菜单，然后选择Convert To和所需的文件格式。该文件将立即转换为选定的格式。
