Add TGA support

[dmitry-shechtman]

No description provided.

[drewnoakes]

Thanks for this. Looks good! Some comments below. I should set up an analyzer for some of these style things to make reviews easier.

I always thought of these files as "Targa" files. Is "TGA" a more common name, or just the file extension? In general I've tried to use the friendly name in type names, directory Name values, etc.

[dmitry-shechtman]

I always thought of these files as "Targa" files. Is "TGA" a more common name, or just the file extension? In general I've tried to use the friendly name in type names, directory Name values, etc.

It is commonly known as TARGA, but that's the name of the video card it was used for. I stuck to the official name.

[drewnoakes]

Do you have some sample .tga files you can provide for the sample library to help prevent regressions here?

[dmitry-shechtman]

Do you have some sample .tga files you can provide for the sample library to help prevent regressions here?

Some of the TGAs I tested on are from ezQuake:

https://github.com/ezQuake/ezquake-media/tree/master/game/textures

Specific files that might be useful:

• models/simple_backpack_0.tga - top to bottom, 0 attribute bits per pixel
• shellmap.tga - uncompressed true color

Both have footers, but no extension/developer areas.

[drewnoakes]

Thanks! I fixed the merge conflicts and made a few other tweaks, verifying the output matches for the ezQuake sample images.