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GameTechDev / Intel-Texture-Works-Plugin

Intel has extended Photoshop* to take advantage of the latest image compression methods (BCn/DXT) via plugin. The purpose of this plugin is to provide a tool for artists to access superior compression results at optimized compression speeds within Photoshop*.
https://software.intel.com/en-us/articles/intel-texture-compression-plugin-for-photoshop
Apache License 2.0
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ITW destroys blue-channel when opening normal and specular maps #8

Closed designosis closed 8 years ago

designosis commented 8 years ago

There's lots of chatter about this on various forums (including this one).

Opening a normal or specular map with the nVidia pluging yields this: nvidia

Opening the same file with the ITW plugin yields this: intel

Notice that the BLUE channel in the ITW is black.

jawilli312 commented 8 years ago

Thanks. Please upload your source file.

designosis commented 8 years ago

Here's the file, direct from the Fallout 4 installation...

RaiderHeadGear1_n.zip

designosis commented 8 years ago

Oops, that's the normal map ... it also loses its blue channel, but for sake of total clarity, here's the specular map as seen in the snapshots above:

RaiderHeadGear1_s.zip

ParasiteX commented 8 years ago

It can't destroy the Blue channel. Because the normals and speculars in Fallout 4 does not use the blue channel. ITW opens and saves the textures correctly. It's the nVidia plugin that doesn't know how to properly open them. The Red channel in speculars handle Specular, while green channel handles Gloss.

jawilli312 commented 8 years ago

The BC5 format is a 2 channel map in the Microsoft Specification. IOW, there is no blue channel to destroy :)

Thanks for posting it just the same.