Tools for working with ptex textures

> ptex-tool reverse input.ptx output.ptx

Reverse winding order in ptx texture. Useful when you need to render alembic geometry with texture created from maya model.

> ptex-tool merge input.ptx input2.ptx [input3.ptx ..] output.ptx
0:input.ptx
555:input2.ptx
1337:input3.ptx

Merge ptex textures into one. Outputs offsets for accessing individual textures. All textures should have same format.

Also includes ptexutls python module exposing this functionality.

• cmake 2.8.10 or newer
• ptex 2.0 or newer
• python 2.7

> mkdir build
> cd build
> cmake ..
> make && make install

• BIN_INSTALL_DIR - where to install executable files, default bin.
• PYTHON_INSTALL_DIR - where to install python modules, default python.
• PTEX_LOCATION - ptex library installation root, by default is empty.
• PTEX_INCLUDE_DIR - path to PTex includes.
• PTEX_LIBARY - path to PTex library.

Options for finding python executable/libraries are from cmake FindPython*.cmake modules in your installation. Example for Autodesk Maya built-in interpreter:

cmake -DPYTHON_EXECUTABLE=${MAYA_LOCATION}/bin/mayapy \
      -DPYTHON_LIBRARY=${MAYA_LOCATION}/lib/libpython2.7.so \
      -DPYTHON_INCLUDE_DIR=${MAYA_LOCATION}/include/python2.7 ..