Rendering Debugger window reference for URP

The Rendering Debugger contains the following sections:

• Display Stats
• Frequently Used
• Rendering
• MaterialAn asset that defines how a surface should be rendered. More info
  See in Glossary
• Lighting
• Render Graph
• Probe Volume

Display Stats

The Display Stats panel shows statistics relevant to debugging performance issues in your project. You can only view this section of the Rendering Debugger in Play Mode. Refer to Open the Rendering Debugger for more information.

Frame Stats

The Frame Stats section displays the average, minimum, and maximum value of each property. URP calculates each Frame Stat value over the 30 most recent frames.

Property	Description
Frame Rate	The frame rate (in frames per second) for the current cameraA component which creates an image of a particular viewpoint in your scene. The output is either drawn to the screen or captured as a texture. More info See in Glossary view.
Frame Time	The total frame time for the current camera view.
CPU Main Thread Frame	The total time (in milliseconds) between the start of the frame and the time when the Main Thread finished the job.
CPU Render Thread Frame	The time (in milliseconds) between the start of the work on the Render Thread and the time Unity waits to render the present frame (Gfx.PresentFrame).
CPU Present Wait	The time (in milliseconds) that the CPU spent waiting for Unity to render the present frame (Gfx.PresentFrame) during the last frame.
GPU Frame	The amount of time (in milliseconds) the GPU takes to render a given frame.
Debug XR Layout	Display debug information for XR passes. This mode is only available in editor and development builds.

Bottlenecks

A bottleneck is a condition that occurs when one process performs significantly slower than other components, and other components depend on it.

The Bottlenecks section describes the distribution of the last 60 frames across the CPU and GPU. You can only check the Bottleneck information when you build your player on a device.

Note: Vsync limits the Frame Rate based on the refresh rate of your device’s screen. This means when you enable Vsync, the Present Limited category is 100% in most cases. To turn Vsync off, go to Edit > Project settings > Quality > Current Active Quality Level and set the Vsync Count set to Don’t Sync.

Bottleneck categories

Category	Description
CPU	The percentage of the last 60 frames in which the CPU limited the frame time.
GPU	The percentage of the last 60 frames in which the GPU limited the frame time.
Present limited	The percentage of the last 60 frames in which the frame time was limited by the following presentation constraints: Vertical Sync (Vsync): Vsync synchronizes rendering to the refresh rate of your display. Target framerate: A function that you can use to manually limit the frame rate of an application. If a frame is ready before the time you specify in targetFrameRate, Unity waits before presenting the frame.
Balanced	This percentage of the last 60 frames in which the frame time was not limited by any of the above categories. A frame that is 100% balanced indicates the processing time for both CPU and GPU is approximately equal.

Bottleneck example

If VsyncVertical synchronization (VSync) is a display setting that caps a game’s frame rate to match the refresh rate of a monitor, to prevent image tearing.
See in Glossary limited 20 of the 60 most recent frames, the Bottleneck section might appear as follows:

• CPU 0.0%: This indicates that URP did not render any of the last 60 frames on the CPU.
• GPU 66.6%: This indicates that the GPU limited 66.6% of the 60 most recent frames rendered by URP.
• Present Limited 33.3%: This indicates that presentation constraints (Vsync or the target framerate) limited 33.3% of the last 60 frames.
• Balanced 0.0%: This indicates that in the last 60 frames, there were 0 frames where the CPU processing time and GPU processing time were the same.

In this example, the bottleneck is the GPU.

Detailed Stats

The Detailed Stats section displays the amount of time in milliseconds that each rendering step takes on the CPU and GPU. URP updates these values once every frame based on the previous frame.

Property	Description
Update every second with average	Calculate average values over one second and update every second.
Hide empty scopes	Hide profiling scopes that use 0.00ms of processing time on the CPU and GPU.
Debug XR Layout	Enable to display debug information for XRAn umbrella term encompassing Virtual Reality (VR), Augmented Reality (AR) and Mixed Reality (MR) applications. Devices supporting these forms of interactive applications can be referred to as XR devices. More info See in Glossary passes. This mode only appears in the editor and development buildsA development build includes debug symbols and enables the Profiler. More info See in Glossary.

Frequently Used

This section contains a selection of properties that users use often. The properties are from the other sections in the Rendering Debugger window. For information about the properties, refer to the sections Material, Lighting, and Rendering.

Rendering

The properties in this section let you visualize different rendering features.

Rendering Debug

Property	Description
Map Overlays	Specifies which render pipeline texture to overlay on the screen. The options are: None: Renders the scene normally without a texture overlay. Depth: Overlays the camera’s depth texture on the screen. Additional Lights Shadow Map: Overlays the shadow map that contains shadows cast by lights other than the main directional light. Main Light Shadow Map: Overlays the shadow map that contains shadows cast by the main directional light.
Map Size	The width and height of the overlay texture as a percentage of the view window URP displays it in. For example, a value of 50 fills up a quarter of the screen (50% of the width and 50% of the height).
HDRhigh dynamic range See in Glossary	Indicates whether to use high dynamic range to render the sceneA Scene contains the environments and menus of your game. Think of each unique Scene file as a unique level. In each Scene, you place your environments, obstacles, and decorations, essentially designing and building your game in pieces. More info See in Glossary. Enabling this property only has an effect if you enable HDR in your URP Asset.
MSAA	Indicates whether to use Multisample Anti-aliasing to render the scene. Enabling this property only has an effect if: You set Anti Aliasing (MSAA) to a value other than Disabled in your URP Asset. You use the Game View. MSAA has no effect in the Scene View.
Post-processing	Specifies how URP applies post-processing. The options are: Disabled: Disables post-processing. Auto: Unity enables or disables post-processing depending on the currently active debug modes. If color changes from post-processing would change the meaning of a debug mode’s pixel, Unity disables post-processing. If no debug modes are active, or if color changes from post-processing don’t change the meaning of the active debug modes’ pixels, Unity enables post-processing. Enabled: Applies post-processing to the image that the camera captures.
Additional Wireframe Modes	Specifies whether and how to render wireframes for meshes in your scene. The options are: None: Doesn’t render wireframes. Wireframe: Exclusively renders edges for meshes in your scene. In this mode, you can see the wireframe for meshes through the wireframe for closer meshes. Solid Wireframe: Exclusively renders edges and faces for meshes in your scene. In this mode, the faces of each wireframe mesh hide edges behind them. Shaded Wireframe: Renders edges for meshes as an overlay. In this mode, Unity renders the scene in color and overlays the wireframe over the top.
Overdraw	Indicates whether to render the overdraw debug view. This is useful to check where Unity draws pixelsThe smallest unit in a computer image. Pixel size depends on your screen resolution. Pixel lighting is calculated at every screen pixel. More info See in Glossary over one other.

Mipmap Streaming

Property	Description
Disable Mip Caching	If you enable Disable Mip Caching, Unity doesn’t cache mipmap levels in GPU memory, and constantly discards mipmap levels from GPU memory when they’re no longer needed. This means the mipmap streaming debug views more accurately display which mipmap levels Unity uses at the current time. Enabling this setting increases the amount of data Unity transfers from disk to the CPU and the GPU.
Debug View	Set a mipmap streaming debug view. Options: None: Display the normal view. Mip Streaming Performance: Use color to indicate which textures use mipmap streaming, and whether mipmap streaming limits the number of mipmap levels Unity loads. Mip Streaming Status: Use color on materials to indicate whether their textures use mipmap streaming. Diagonal stripes mean some of the textures use a requestedMipmapLevel that overrides mipmap streaming. Yellow means Unity can’t stream the texture, or the texture is assigned to terrain. Mip Streaming Activity: Use color to indicate whether Unity recently streamed the textures. Mip Streaming Priority: Use color to indicate the streaming priority of the textures. Set streaming priority for a texture in the Texture Import Settings window. Mip Count: Display the number of mipmap levels Unity loads for the textures. Mip Ratio: Use color to indicate the pixel density of the highest-resolution mipmap levels Unity uploads for the textures.
Debug Opacity	Set the opacity of the Debug View you select. 0 means not visible and 1 means fully visible. This property is visible only if Debug View is not set to None.
Combined Per Material	Set the Debug View to display debug information of all the textures on a material, not individual texture slots. This property is only visible if Debug View is set to Mip Streaming Status or Mip Streaming Activity.
Material Texture Slot	Set which texture Unity uses from each material to display debug information. For example, set Material Texture Slot to Slot 3 to display debug information for the fourth texture. If a material has fewer textures than the Material Texture Slot value, Unity uses no texture. This property is visible only if Combined Per Material is disabled, and Debug View is not set to None.
Display Status Codes	Display more detailed statuses for textures that display as Not streaming or Warning in the Mip Streaming Status debug view. This property is visible only if Debug View is set to Mip Streaming Status.
Activity Timespan	Set how long a texture displays as Just streamed, in seconds. This property is visible only if Debug View is set to Mip Streaming Activity.
TerrainThe landscape in your scene. A Terrain GameObject adds a large flat plane to your scene and you can use the Terrain’s Inspector window to create a detailed landscape. More info See in Glossary Texture	Set which terrain texture Unity displays. You can select either Control for the control texture, or one of the diffuse textures. This property is visible only if Debug View is not set to None.

Pixel Validation

Property	Description
Pixel Validation Mode	Specifies which mode Unity uses to validate pixel color values. The options are: None: Renders the scene normally and doesn’t validate any pixels. Highlight NaN, Inf and Negative Values: Highlights pixels that have color values that are NaN, Inf, or negative. Highlight Values Outside Range: Highlights pixels that have color values outside a particular range. Use Value Range Min and Value Range Max.
Channels	Specifies which value to use for the pixel value range validation. The options are: RGB: Validates the pixel using the luminance value calculated from the red, green, and blue color channels. R: Validates the pixel using the value from the red color channel. G: Validates the pixel using the value from the green color channel. B: Validates the pixel using the value from the blue color channel. A: Validates the pixel using the value from the alpha channel. This property only appears if you set Pixel Validation Mode to Highlight Values Outside Range.
Value Range Min	The minimum valid color value. Unity highlights color values that are less than this value. This property only appears if you set Pixel Validation Mode to Highlight Values Outside Range.
Value Range Max	The maximum valid color value. Unity highlights color values that are greater than this value. This property only appears if you set Pixel Validation Mode to Highlight Values Outside Range.

Material

The properties in this section let you visualize different Material properties.

Material Filters

Property	Description
Material Override	Select a Material property to visualize on every GameObject on screen. The available options are: Albedo Specular Alpha Smoothness AmbientOcclusion Emission NormalWorldSpace NormalTangentSpace LightingComplexity Metallic SpriteMask RenderingLayerMasks With the LightingComplexity value selected, Unity shows how many Lights affect areas of the screen space. With the RenderingLayerMasks value selected, you can filter the layers you want to debug either manually using the Filter Layers option or by selecting a light with the Filter Rendering Layers by Light option. Additionally, you can override the debug colors using Layers Color.
Vertex Attribute	Select a vertex attribute of GameObjects to visualize on screen. The available options are: Texcoord0 Texcoord1 Texcoord2 Texcoord3 Color Tangent Normal

Material Validation

Property	Description
Material Validation Mode	Select which Material properties to visualize: Albedo, or Metallic. Selecting one of the properties shows the new context menu.
Validation Mode: Albedo	Selecting Albedo in the Material Validation Mode property shows the Albedo Settings section with the following properties: Validation Preset: Select a pre-configured material, or Default Luminance to visualize luminance ranges. Min Luminance: Unity draws pixels where the luminance is lower than this value with red color. Max Luminance: Unity draws pixels where the luminance is higher than this value with blue color. Hue Tolerance: available only when you select a pre-set material. Unity adds the hue tolerance to the minimum and maximum luminance values. Saturation Tolerance: available only when you select a pre-set material. Unity adds the saturation tolerance to the minimum and maximum luminance values.
Validation Mode: Metallic	Selecting Metallic in the Material Validation Mode property shows the Metallic Settings section with the following properties: Min Value: Unity draws pixels where the metallic value is lower than this value with red color. Max Value: Unity draws pixels where the metallic value is higher than this value with blue color.

Lighting

The properties in this section let you visualize different settings and elements related to the lighting system, such as shadow cascades, reflections, contributions of the Main and the Additional Lights, and so on.

Lighting Debug Modes

Property	Description
Lighting Debug Mode	Specifies which lighting and shadow information to overlay on-screen to debug. The options are: None: Renders the scene normally without a debug overlay. Shadow Cascades: Overlays shadow cascade information so you can determine which shadow cascade each pixel uses. Use this to debug shadow cascade distances. For information on which color represents which shadow cascade, refer to the Shadows section of the URP Asset. Lighting Without Normal Maps: Renders the scene to visualize lighting. This mode uses neutral materials and disables normal maps. This and the Lighting With Normal Maps mode are useful for debugging lighting issues caused by normal maps. Lighting With Normal Maps: Renders the scene to visualize lighting. This mode uses neutral materials and allows normal maps. Reflections: Renders the scene to visualize reflections. This mode applies perfectly smooth, reflective materials to every Mesh Renderer. Reflections With Smoothness: Renders the scene to visualize reflections. This mode applies reflective materials without an overridden smoothness to every GameObject.
Lighting Features	Specifies flags for which lighting features contribute to the final lighting result. Use this to view and debug specific lighting features in your scene. The options are: Nothing: Shortcut to disable all flags. Everything: Shortcut to enable all flags. Global Illumination: Indicates whether to render global illuminationA group of techniques that model both direct and indirect lighting to provide realistic lighting results. See in Glossary. Main Light: Indicates whether the main directional Light contributes to lighting. Additional Lights: Indicates whether lights other than the main directional light contribute to lighting. Vertex Lighting: Indicates whether additional lights that use per-vertex lighting contribute to lighting. Emission: Indicates whether emissive materials contribute to lighting. Ambient Occlusion: Indicates whether ambient occlusionA method to approximate how much ambient light (light not coming from a specific direction) can hit a point on a surface. See in Glossary contributes to lighting.

Render Graph

The properties in this section let you change how the render graph system works.

Property	Description
Clear Render Targets At Creation	Clear render texturesA special type of Texture that is created and updated at runtime. To use them, first create a new Render Texture and designate one of your Cameras to render into it. Then you can use the Render Texture in a Material just like a regular Texture. More info See in Glossary the first time the render graph system uses them.
Clear Render Targets When Freed	Clear render textures when they’re no longer used by render graph.
Disable Pass Culling	Disable URP culling render passes that have no impact on the final render.
Enable Logging	Enable logging to the Console window.
Log Frame Information	Log how URP uses the resources during the frame, in the Console window.
Log Resources	Log the resources URP uses during the frame, in the Console window.

Probe Volumes

These settings make it possible for you to visualize Adaptive Probe Volumes in your Scene, and configure the visualization.

Subdivision Visualization

Property	Sub-property	Description
Display Cells		Display cells. Refer to Understanding Adaptive Probe Volumes for more information.
Display Bricks		Display bricks. Refer to Understanding Adaptive Probe Volumes for more information.
Live Subdivision Preview		Enable a preview of Adaptive Probe Volume data in the scene without baking. This might make the Editor slower. This setting appears only if you select Display Cells or Display Bricks.
	Cell Updates Per Frame	Set the number of cells, bricks, and probe positions to update per frame. Higher values might make the Editor slower. The default value is 4. This property appears only if you enable Live Subdivision Preview.
	Update Frequency	Set how frequently Unity updates cell, bricks, and probe positions, in seconds. The default value is 1. This property appears only if you enable Live Subdivision Preview.
Debug Draw Distance		Set how far from the scene camera Unity draws debug visuals for cells and bricks, in meters. The default value is 500.

Probe Visualization

Property	Sub-property	Description
Display Probes		Display probes.
	Probe Shading Mode	Set what the Rendering Debugger displays. The options are: SH: Display the spherical harmonics (SH) lighting data for the final color calculation. The number of bands depends on the SH Bands setting in the active URP Asset. SHL0: Display the spherical harmonics (SH) lighting data with only the first band. SHL0L1: Display the spherical Harmonics (SH) lighting data with the first two bands. Validity: Display whether probes are valid, based on the number of backfaces the probe samples. Refer to Fix issues with Adaptive Probe Volumes for more information about probe validity. Probe Validity Over Dilation Threshold: Display red if a probe samples too many backfaces, based on the Validity Threshold set in the Adaptive Probe Volumes panel. This means the probe can’t be baked or sampled. Invalidated By Touchup Volumes: Display probes that a Probe Adjustment Volume component has made invalid. Size: Display a different color for each size of brick. Sky Occlusion SH: If you enable sky occlusion, this setting displays the amount of indirect light the probe receives from the sky that bounced off static GameObjects. The value is a scalar, so it displays as a shade of gray. Sky Direction: Display a green circle that represents the direction from the probe to the sky. This setting displays a red circle if Unity can’t calculate the direction, or Sky Direction in the Adaptive Probe Volumes panel is disabled.
	Debug Size	Set the size of the displayed probes. The default is 0.3.
	Exposure Compensation	Set the brightness of the displayed probes. Decrease the value to increase brightness. The default is 0. This property appears only if you set Probe Shading Mode to SH, SHL0, or SHL0L1.
	Max Subdivisions Displayed	Set the lowest probe density to display. For example, set this to 0 to display only the highest probe density.
	Min Subdivisions Displayed	Set the highest probe density to display.
Debug Probe Sampling		Display how probes are sampled for a pixel. In the Scene viewAn interactive view into the world you are creating. You use the Scene View to select and position scenery, characters, cameras, lights, and all other types of Game Object. More info See in Glossary, in the Adaptive Probe Volumes overlay, select Select Pixel to change the pixel.
	Debug Size	Set the size of the Debug Probe Sampling display.
	Debug With Sampling Noise	Enable sampling noise for this debug view. Enabling this gives more accurate information, but makes the information more difficult to read.
Virtual Offset Debug		Display the offsets Unity applies to Light ProbeLight probes store information about how light passes through space in your scene. A collection of light probes arranged within a given space can improve lighting on moving objects and static LOD scenery within that space. More info See in Glossary capture positions.
	Debug Size	Set the size of the arrows that represent Virtual Offset values.
Debug Draw Distance		Set how far from the scene camera Unity draws debug visuals for cells and bricks, in meters. The default is 200.

Streaming

Use the following properties to control how URP streams Adaptive Probe Volumes. Refer to Optimize loading Adaptive Probe Volume data for more information.

Property	Description
Freeze Streaming	Stop Unity from streaming probe data.
Display Streaming Score	If you enable Display Cells, this setting darkens cells that have a lower priority for streaming. Cells closer to the camera usually have the highest priority.
Maximum cell streaming	Stream as many cells as possible every frame.
Display Index Fragmentation	Open an overlay that displays how fragmented the streaming memory is. A green square is an area of used memory. The more spaces between the green squares, the more fragmented the memory.
Index Fragmentation Rate	Displays the amount of fragmentation as a numerical value, where 0 is no fragmentation.
Verbose Log	Log information about streaming.

Scenario Blending

Use the following properties to control how URP blends Lighting Scenarios. Refer to Bake different lighting setups with Lighting Scenarios for more information.

Property	Description
Number of Cells Blended Per Frame	Determines the maximum number of cells Unity blends per frame. The default is 10,000.
Turnover Rate	Set the blending priority of cells close to the camera. The range is 0 to 1, where 0 sets the cells close to the camera with high priority, and 1 sets all cells with equal priority. Increase Turnover Rate to avoid cells close to the camera blending too frequently.
Scenario To Blend With	Select a Lighting Scenario to blend with the active Lighting Scenario.
Scenario Blending Factor	Set how far to blend from the active Lighting Scenario to the Scenario To Blend With. The range is 0 to 1, where 0 is fully the active Lighting Scenario, and 1 is fully the Scenario To Blend With.