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Debug Materials

A debug material is a material that can be used for debugging of the image generation stages. By using the debug materials, you can check how the scene looks on a certain stage, visualize contents of the rendering buffers, check how they are blended into the final image. It means that you can render only reflections, or lighting, or only cubemaps, and so on.

The debug materials also allow you to check how sRGB correction and automatic exposure affect the final image.

The debug material includes all deferred buffers that are used on the Deferred Composite stage of the rendering sequence: you can compose contents of these buffers in any desired way. However, note that according to the rendering sequence, the debug materials are rendered after transparent objects rendering. So, the deferred buffers will contain data written by the transparent objects (if their materials have the Deferred Buffers flag set).

Notice
The debug material can be used as a composite material.

UNIGINE provides a set of preconfigured materials inherited from the debug_materials material: you can use one of them or inherit from debug_materials and set up your own debug material.

Notice
The debug material doesn't change the image rendered in the viewport: it is rendered atop the current viewport as a debug image. This image can be modified: you can change its size, or specify an offset along the axes.

The debug materials have the higher priority than the settings in the Rendering Debug Panel of the UnigineEditor.

Applying Debug Materials

To apply a debug material, perform the following:

  1. Enable rendering of the debug materials in one of the following ways:
    • Via the UnigineEditor: on the Menu Bar, choose Rendering -> Features -> Debug.
    • Via the console: specify 1 for the render_debug console command.
  2. Specify the debug material that should be applied in one of the following ways:
    • Via the console: specify the material name as the argument of the render_debug_materials console command.
      Source code
      Unigine~# render_debug_materials debug_lights
    • Via the Settings window of the UnigineEditor: specify the material name in the Debug Materials field.
Notice
You can specify several comma-separated materials: they will be applied in the specified order, so the last material in the list will be rendered atop the other debug materials.

Masking Debug Materials

By using the mask, you can control the area of debug material visibility. For example, by using the mask, you can create a smooth transition between the image that displays a rendering buffer and the final image. Or you can combine these images as follows:

Diffuse Lighting Image (debug_lights material) Combined with Final Image

Debug Materials Presets

UNIGINE provides a set of preconfigured debug materials that allow debugging lighting, reflections, screen space effects, and so on. These materials are available in the Materials Hierarchy Window:

Debug Mateials Presets in Materials Hierarchy

Such materials are inherited from debug_materials. You can apply one of them as is, or inherit a new material from one of them and change the parameters, apply a mask texture, or toggle the states on and off.

The following pictures demonstrate some of the preconfigured debug materials applied to the scene:

debug_ssao Material
debug_ssr Material
debug_ambient_light Material
debug_diffuse_light Material
Last update: 26.04.2018