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Merge pull request #2705 from Calinou/mention-normal-map-rgtc-caveats

Mention caveats of using RGTC compression for normal maps with shaders
Rémi Verschelde 6 years ago
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      getting_started/workflow/assets/importing_images.rst

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getting_started/workflow/assets/importing_images.rst
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@@ -88,6 +88,8 @@ look that nice in normal maps, the RGTC compression format is the best fit for t
 
 image as RGTC compressed. By default, it's set to "Detect", which means that if the texture is ever used as a normal map, it will be changed to "Enabled" and
 
 image as RGTC compressed. By default, it's set to "Detect", which means that if the texture is ever used as a normal map, it will be changed to "Enabled" and
 
 reimported automatically.
 
 reimported automatically.
 
 
 
+Note that RGTC compression affects the resulting normal map image. You will have to adjust custom shaders that use the normal map to take this into account.
 
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