Unsupported TGA file about directxtex HOT 1 CLOSED

I have a little utility for dumping out the header information I use for debugging purposes (found here). For your file it outputs:

TGA bad_file.tga
ColorMap Type = 1
ImageType = 1   TGA_COLOR_MAPPED
ColorMap First = 0
ColorMap Length = 256
ColorMap Entry Size = 24
Origin 0, 0
Size: 4096 by 4096
Bits Per Pixel 8
Image descriptor 00
ExtensionOffset = 0
DeveloperOffset = 0
Signature= TRUEVISION-XFILE.

As noted on the wiki the TGA reader does not support color-mapped (i.e. palette) files which are uncommon for TGA (since the main value of that format is being able to encode 24bpp images). I do have an open issue for a possible way to handle them since there are no paletted DXGI formats. See 38

from directxtex.