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Monitors

To help artists control the overall look and exposure of a 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
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, the post-processing stack comes with a set of industry-standard monitors. You can find them in the preview area of the InspectorA Unity window that displays information about the currently selected GameObject, Asset or Project Settings, alowing you to inspect and edit the values. More info
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. Like with any other preview area in the Inspector, you can show/hide it by clicking it and undock it by right-clicking its title.

Each monitor can be enabled in play mode for real-time update by clicking the button with the play icon in the titlebar. Note that this can greatly affect performance of your scene in the editor, so use with caution. This feature is only available on compute-shader enabled platforms.

Histogram

A standard gamma histogram, similar to the one found in common graphics editing software. A histogram illustrates how pixelsThe smallest unit in a computer image. Pixel size depends on your screen resolution. Pixel lighting is calculated at every screen pixel. More info
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in an image are distributed by graphing the number of pixels at each color intensity level. It can help you determine whether an image is properly exposed or not.

The Histogram Monitor
The Histogram Monitor

Waveform

This monitors displays the full range of luma information in the render. The horizontal axis of the graph corresponds to the render (from left to right) and the vertical axis is the luminance. You can think of it as an advanced histogram, with one vertical histogram for each column of your image.

The Waveform Monitor
The Waveform Monitor

Parade

The Parade monitor is similar to the Waveform only it splits the image into red, green and blue separately.

It is useful in seeing the overall RGB balance in your image, for instance, if there is an obvious offset in one particular channel, and in making sure objects and elements in the shot that should be black, or white are true black or true white. Something that is true black, white (or grey for that matter) will have equal values across all channels.

The Parade Monitor
The Parade Monitor

Vectorscope

This monitor measures the overall range of hue (marked at yellow, red, magenta, blue, cyan and green) and saturation within the image. Measurements are relative to the center of the scope.

More saturated colors in the frame stretch those parts of the graph farther toward the edge, while less saturated colors remain closer to the center of the Vectorscope which represents absolute zero saturation. By judging how many parts of the Vectorscope graph stick out at different angles, you can see how many hues there are in the image. Furthermore, by judging how well centered the middle of the Vectorscope graph is relative to the absolute center, you can get an idea of whether there’s a color imbalance in the image. If the Vectorscope graph is off-centered, the direction in which it leans lets you know that there’s a color cast (tint) in the render.

The Vectorscope Monitor
The Vectorscope Monitor

Requirements

  • Compute shader

  • ShaderA small script that contains the mathematical calculations and algorithms for calculating the Color of each pixel rendered, based on the lighting input and the Material configuration. More info
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    model 3

See the Graphics Hardware Capabilities and Emulation page for further details and a list of compliant hardware.


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Debug Views
Writing post-processing effects