Fix sign of tbn generator that caused normal map flipping in some situations #2140
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Tested with the ogre format, it displayed the same behavior as gltf. @codex128 when you can, please look into this and let me know your opinion on this patch |
codex128
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Nov 8, 2023
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In general, these changes look good to me, although I don't know enough about normal maps to be absolutely sure.
In order to avoid further problems arising, I think the normal type parameter should be explained on the wiki. This issue is just subtle enough for new users to trip over without realizing it. 😉
jme3-examples/src/main/java/jme3test/material/TestNormalMappingConsistency.java
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jme3-examples/src/main/java/jme3test/material/TestNormalMappingConsistency.java
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jme3-core/src/main/java/com/jme3/util/mikktspace/MikktspaceTangentGenerator.java
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stephengold
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See #2120 (comment)