GTX Extractor v5.4

Extracts textures from the GX2 Texture ('Gfx2' / .gtx file extension) format used in Wii U games, and saves them as DDS.

Can Also convert DDS files into .gtx files!

Requirements:

Python 3.4 or higher.
Cython (Optional)
cx_Freeze. (Optional)

Supported formats:

GX2_SURFACE_FORMAT_TCS_R8_G8_B8_A8_UNORM
GX2_SURFACE_FORMAT_TCS_R8_G8_B8_A8_SRGB
GX2_SURFACE_FORMAT_TCS_R10_G10_B10_A2_UNORM
GX2_SURFACE_FORMAT_TCS_R5_G6_B5_UNORM
GX2_SURFACE_FORMAT_TC_R5_G5_B5_A1_UNORM
GX2_SURFACE_FORMAT_TC_R4_G4_B4_A4_UNORM
GX2_SURFACE_FORMAT_TC_R8_UNORM
GX2_SURFACE_FORMAT_TC_R8_G8_UNORM
GX2_SURFACE_FORMAT_TC_R4_G4_UNORM
GX2_SURFACE_FORMAT_T_BC1_UNORM
GX2_SURFACE_FORMAT_T_BC1_SRGB
GX2_SURFACE_FORMAT_T_BC2_UNORM
GX2_SURFACE_FORMAT_T_BC2_SRGB
GX2_SURFACE_FORMAT_T_BC3_UNORM
GX2_SURFACE_FORMAT_T_BC3_SRGB
GX2_SURFACE_FORMAT_T_BC4_UNORM
GX2_SURFACE_FORMAT_T_BC4_SNORM
GX2_SURFACE_FORMAT_T_BC5_UNORM
GX2_SURFACE_FORMAT_T_BC5_SNORM

Credits:

AboodXD - Writing this thingy.

Special thanks to:

Exzap - Helping with swizzling.