Posted:

Updated:

July 17, 2018

July 17, 2018

Generating Parameter File with Krita

PDF file available here.

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TRS19 requires PBR (Physical Based Rendering) textured files: the Albedo, Normal and Parameter files. Krita is a free paint (raster) and draw (vector) program that can generate the Parameter file for PBR texturing when using Blender to make Trainz assets for TRS19. 

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After you have generated the emissive, roughness, ambient occlusion and metallic files they can be imported into Krita and combined to form the parameter file as follows.

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• Open Krita and DRAG in the metallic file.

• In the layers panel on the right rename it from “layer 1” to “metallic”.

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(Click on image to expand.)

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• Drag in the ambient occlusion file and select “Insert as New Layer”.

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• Drag in the ambient roughness file and select “Insert as New Layer”.

• Drag in the emissive file and select “Insert as New Layer”.

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Note:        The metallic layer must be on the bottom of the layer stack. The 

            order of the other three layers does not matter.

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• Select the emissive layer and Image Menu > Color Image Color Space > 

   Set the Mode to “RGB/Alpha” > click OK.

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• Select the roughness layer and Image Menu > Color Image Color Space > 

   Set the Mode to “RGB/Alpha” > click OK. 

• Select the ambient occlusion layer and Image Menu > Color Image Color 

   Space > Set the Mode to “RGB/Alpha” > click OK. 

• Select the metallic layer and Image Menu > Color Image Color Space > 

   Set the Mode to “RGB/Alpha” > click OK.

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• Select the emissive layer > RMB-CLICK > select Properties > under Active 

   Channels uncheck Blue, Green and Alpha >click OK.

(Click on image to expand.)

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• Select the roughness layer > RMB-CLICK > select Properties > under 

   Active Channels uncheck Blue, Red and Alpha >click OK.

• Select the ambient occlusion layer > RMB-CLICK > select Properties > 

   under Active Channels uncheck Blue, Green and Alpha >click OK.

• Select the metallic layer > RMB-CLICK > select Properties > under Active 

   Channels uncheck Blue, Green and Red >click OK.

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• In the layers Menu select Flatten Image.

(Click on image to expand.)

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• Export file as “parameter.png”. 

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References:

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Krita - compose CMYK from separate layers after editing.

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