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How to change texture filtering settings in Corona for 3ds Max?

Disabling texture filtering is sometimes useful if you need very crisp look of textures or you have low-resolution textures that get blurry when seen at a grazing angle. Texture filtering is independent from Blur and Blur offset values in the bitmap's settings.

 

To globally disable or enable texture filtering, go to the "Development/Experimental Stuff" rollout and find "Texmap filtering". From the list you can pick AllNone or All but opacity.

 

Examples

1. Bitmap texture - texture filtering on (All).

Note visible blurriness of the texture where it's stretched on the torus knot object.

texfilter1.jpg

 

2. Bitmap texture - texture filtering off (None).

Note that blurriness on the torus knot object disappears.

texfilter2.jpg

 

3. Bitmap as opacity map - texture filtering off (All but opacity - default setting).

32 passes

Rendering time: 01:45

Rays/s: 2,724,105

nofilter.jpg

 

4. Bitmap as opacity map - texture filtering on (All).

32 passes

Rendering time: 02:35

Rays/s: 1,972,307

There is little visual difference, but rendering is significantly slower when texture filtering is enabled for opacity maps.

filter.jpg

 

 

 

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