62 lines
3.8 KiB
Markdown
62 lines
3.8 KiB
Markdown
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# Create and apply a custom post-processing effect
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## Create a custom post-processing effect
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A custom post-processing effect requires the following files:
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- A C# Custom Post Process Volume.
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- An associated full-screen shader. You can use a [shader file](https://docs.unity3d.com/Manual/SL-ShaderPrograms.html) or a [Fullscreen Shader Graph](fullscreen-master-stack-reference.md).
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HDRP includes a template of each file you need to set up custom post-processing. To generate each template:
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- C# Custom Post Process Volume: Go to **Assets** > **Create** > **Rendering** and select **HDRP C# Post Process Volume**.
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- Full-screen shader:
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- To create a shader file, go to **Assets** > **Create** > **Shader** and select **HDRP** **Post Process**.
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- To create a [Fullscreen Shader Graph](fullscreen-master-stack-reference.md), go to **Assets** > **Create** > **Shader Graph** > **HDRP** and select **Fullscreen Shader Graph**.
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Note that the file name of both the C# post-process volume and the shader need to be the same to work without any modification. If the name doesn't match, you need to update the **kShaderName** property to reflect the actual name of the shader.
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This creates each template file in the **Project** window in the **Assets** folder.
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<a name="apply-custom-postprocess"></a>
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## Apply a custom post-processing effect
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For HDRP to recognize a custom post-processing effect in your project, assign it in HDRP graphics settings:
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1. Go to **Edit** > **Project Settings** > **Graphics** > **Pipeline Specific Settings** > **HDRP**.
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2. Scroll down until you find the **Custom Post Process Orders** section. This section contains a list for each injection point.
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3. In the **After Post Process** field, select **Add** (**+**).
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4. Select the name of the custom post-processing you want to apply.
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This also allows you to control the execution order of the post-processing effects in your scene. For more information, see [Order custom post-processing effects](custom-post-processing-create-apply.md#EffectOrdering).
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To apply a custom post-processing effect in your scene, set up a volume component:
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1. Create a Volume component (Menu: **GameObject** > **Volume**).
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2. Select the Volume in the Hierarchy menu.
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3. In the Profile field, select the volume profile picker (circle) to add an existing volume profile, or select **New** to create a new volume profile.
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4. In the Inspector, select **Add Override.**
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5. In the dropdown, search for the name of the Custom Post Process Volume script and select it.
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For a full script example you can use, see [Custom post-processing example scripts](custom-post-processing-scripts.md).
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## Order custom post-processing effects
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HDRP allows you to customize the order of your custom post-processing effects at each stage in the rendering process. These stages are called injection points.
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To determine the injection points in which your effect can appear, change the enum in the following line in the C# Custom Post Process Volume:
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```c#
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public override CustomPostProcessInjectionPoint injectionPoint => CustomPostProcessInjectionPoint.AfterPostProcess;
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```
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For more information on which enums you can use, see [CustomPostProcessInjectionPoint](https://docs.unity3d.com/Packages/com.unity.render-pipelines.high-definition@15.0/api/UnityEngine.Rendering.HighDefinition.CustomPostProcessInjectionPoint.html).
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To order your custom post-processing effects:
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1. Go to **Edit** > **Project Settings** > **Graphics** > **Pipeline Specific Settings** > **HDRP**.
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2. Scroll down until you find the **Custom Post Process Orders** section. This section contains a field for each injection point.
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3. Select the **Add** (**+**) icon to add an effect to an injection point field.
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To change the order HDRP executes multiple post-processing effects within an injection point, move them up or down in this list. HDRP executes the effects in order from top to bottom.
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