Does changes made to height channel affect the normal channel?

Question

Hello everyone,Generally, height maps and normal maps are used as an alternative. So, if we texture our mesh using the height channel and export all the maps. later we decided to use the normal map to save memory can we get the same results if we use only the normal map in another software? I want to ask if the changes made to the height channel affect the normal channel.I appreciate your help.

davescm · Accepted Answer

When using converted normal maps, the export contains the information from both the heightmap and the normal map that you see in the viewport.

Whether that gives exactly the same result as separate maps depends on how your rendering software uses them.

Dave

davescm · Answer

When you export, your export template can use either a standalone normal map or (as is used in most templates) a converted normal map. The converted normal maps (both DirectX and OpenGL) incorporate the height information and the normal information into the exported normal map. You can set up a preset to use either type in Export Textures - Output templates.

https://helpx.adobe.com/substance-3d-painter/getting-started/export/creating-export-presets.html

Dave

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