How can I prevent a texture to reflect light like it was a mirror?

[Lolasho]

I'm trying to redecorate a modded house. I want to change his paintings because they're really ugly, but... when I replace the old meshes and textures, my new painting shows like a mirror (it reflects the light in a not natural way), and the old paintings didn't look like that.

 

I think it has something to do with the normal maps or some material configuration of the .nif file (and, of course, the illumination, but there must be another way to show it properly because the old pictures looked right in the same location), but I don't know because I'm new to modding. Can someone help me, please?

 

Thanks.

P.D: Okay, I have a new problem... my textures only work on 8.8.8.8 format. DXT1 and DXT3 (I don't tested extensively DXT5) show like a black surface. What am I doing wrong?

[heavywaters]

Normal maps could be the problem...

There may have been a Specular Map with the original normal, open them to see if there is an alpha channel.

 

Another problem may be that the specular color is set to white in the NiMaterialProperties branch in the nif.

Change it to black.

 

Yet another reason could be that Environment Mapping may be enabled.

Do you have "reflections" moving across the surface when you move?

 

With texture and normal maps use DXT1 unless they have alpha channels, in witch case use DXT3 or DXT5.

All texture resolutions must be in multiples of 2.

[Lolasho]

Normal maps could be the problem...

There may have been a Specular Map with the original normal, open them to see if there is an alpha channel.

Yes, they have a white alpha channel. I guess I should delete it.

 

Another problem may be that the specular color is set to white in the NiMaterialProperties branch in the nif.

Change it to black.

I THINK that three of the triangles are set as white. Which one should I change? It says that the material is Material #744 or something like that.

 

Yet another reason could be that Environment Mapping may be enabled.

Do you have "reflections" moving across the surface when you move?

When I move near the picture, depending on the angle and distance, I can see it white or mild white. For example, the picture has a white side and a red side. I can only see the red side in some angles. Trying to look to the white side is nearly impossible.

 

With texture and normal maps use DXT1 unless they have alpha channels, in witch case use DXT3 or DXT5.

All texture resolutions must be in multiples of 2.

I'm actually using 8.8.8.8 ARGB for textures because it's uncompressed (I want a good quality in the pictures) and DXT3 for normal maps. Maybe I should save Normal Maps as a DXT1 without alpha channel. But... I don't know why if I save a texture (for the frame of the picture, for example) with a compressed format I can't. They show like a black surface.

 

EDIT: Seems that deleting the alpha channel and saving the texture as a DXT1 RGB has solved a big part of the problem. Now it shows correctly, but... I think they still look extremely bright when I get close to them. Seems that the PC has a permanent Light effect that illuminates everything in a ratio of 1 or 2 meters. Can I get out that illumination? I think that's also why my character also looks like a mirror in sunny exteriors.

 

Anyway, kudos for you! Thanks!

[heavywaters]

I THINK that three of the triangles are set as white. Which one should I change? It says that the material is Material #744 or something like that.

The name only matters for a few specific effects, beyond that you can name it anything you like.

 

Read this thread, it explains what each color setting does. In your case, you need to adjust "specular color" settings.

Nifskope material properties