Recently, I want to use a roughness map to get better rendering results. Most information on the internet is about the operation of 3D software. So, how can I generate a roughness map of my own 3D mesh? Thanks very much.
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Most of the major photo/image editing software programs can be used to generate a roughness map. It is usually best just to search google with something like, "How to create a roughness map using xyz." Where xyz is photoshop or some other popular image editor. If you can narrow you question down a little with the software you have, or the images you have and how they are generated then it makes it easier to give a specific answer to your question.
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$\begingroup$ I mean, how can I generate the roughness map by my owen codes in C++/Python. $\endgroup$ Commented Nov 27, 2021 at 1:04
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$\begingroup$ @jacktsang Maybe you should edit your question and add this information there. $\endgroup$– wychmaster ♦Commented Nov 30, 2021 at 8:58
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$\begingroup$ even gimp can use a map with noise values. More more pliability, the best is to use shadertoy.com ;-) $\endgroup$ Commented Jan 15, 2022 at 16:25