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This article explains how troubleshoot and fix an issue with black swatches in the 3ds Max Material Editor.

3ds Max Tips & Tricks / 2020-08-13 / Materials Slots, V-ray, V-ray materials 3ds Max Materials Editor slots is standard in default, but when we change Render engine to Vray, still we need every time to replace standard slot to Vray manually, so to save time we can make the default slots on Materials editor to be always as Vray.

1. As noted earlier, there's no dedicated slot for AO maps in the 3ds Max Physical Material. We'll instead apply the AO map to the Diffuse Roughness slot. In the Physical Material's Generic Maps list, select the No Map slot next to Diffuse Roughness and load your AO map. In the AO textures properties, the map channel is set to 1 by default.
2. 3DS Max - Render to texture results in black screen when saved to file. Polycounter lvl 9. Offline / Send Message. Render out a single unmodified box with no material using a mental ray light (any) it comes out black. The only light that works is the standard 'Skylight', which is no good. This is 3ds Max.

Issue

Sometimes, when opening the 3ds Max Material Editor, the material swatches may rendered black in the Material/Map Browser; or the Sample slots may be rendered with a flat color. See the examples below.

There are several potential causes of the issue. Some of them and their solutions are explained in detail in this article.

Licensing Issues

COMPACT EDITORSLATE EDITOR

Rendering the swatches in the Material Editor, just like rendering an image, requires a license. Ensure that:

• The Chaos License Server is installed;
• TheChaos License Server is running;
• You have available V-Ray for 3ds Max licenses.

For more information on setting up your licenses, see this article.

V-Ray is not set as the Material Editor’s Renderer

COMPACT EDITORSLATE EDITOR

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By default, V-Ray is set as the render engine for the Material Editor. In some cases, however, another renderer might be selected, which will cause the V-Ray material swatches to render black.

Assign the renderer to V-Ray manually from Render Setup > Common > Assign Renderer > Material Editor.

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Force a Re-render of the Swatches

COMPACT EDITORSLATE EDITOR

Sometimes a re-render of the Material Editor swatches may be the simpler solution.

There are a couple of ways to do that:

• Set the render engine for the Material Editor to another render engine and then switch back to V-Ray (check above)

• Use the Material/Map Browser options > Additional Options > Clear Preview Thumbnail Cache command
  
  
  

• Change the size of the material swatches in the Slate Material Editor by right-clicking on the material group > Display Group(and Subgroup) As: Small / Medium / Large Icons
  
  
  

• Change the size of the material swatches in the Compact Material Editor by right-clicking on any material swatch > 3x2 / 5x3 / 6x4 Sample Windows
  
  

Rendering in the Material Editor is Disabled

SLATE EDITOR

The swatches will not render if rendering for the Material Editor is disabled.

Make sure that rendering is enabled by toggling the teapot () button in the lower left corner of the window.

Manual Update is Turned On

COMPACT EDITOR

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The Sample Slots in the Compact Material Editor will not update automatically if the Manual Update option is turned ON.

Turn it off from the Options dropdown > Options.. > Manual Update.

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