convert equirectangular light probes into RGBE png cubemap textures, which is supported in Cocos3D.

ibl_convert your_light_probe.hdr

code base from LearnOpenGL.

Windows building

All relevant libraries are found in /libs and all DLLs found in /dlls (pre-)compiled for Windows.

The CMake script knows where to find the libraries so just run CMake script and generate project of choice.

Keep in mind the supplied libraries were generated with a specific compiler version which may or may not work on your system (generating a large batch of link errors). In that case it's advised to build the libraries yourself from the source.

Linux building

First make sure you have CMake, Git, and GCC by typing as root (sudo) apt-get install g++ cmake git and then get the required packages: Using root (sudo) and type apt-get install libsoil-dev libglm-dev libassimp-dev libglew-dev libglfw3-dev libxinerama-dev libxcursor-dev libxi-dev .

Next, run CMake. The source directory is ibl_convert and specify the build directory as ibl_convert/build. Creating the build directory within ibl_convert is important for linking to the resource files (it also will be ignored by Git). Hit configure and specify your compiler files (Unix Makefiles are recommended), resolve any missing directories or libraries, and then hit generate. Navigate to the build directory (cd ibl_convert/build) and type make in the terminal. This should generate the executables in the respective chapter folders.

Note that CodeBlocks or other IDEs may have issues running the programs due to problems finding the shader and resource files, however it should still be able to generate the exectuables. To work around this problem it is possible to set an environment variable to tell the tutorials where the resource files can be found. The environment variable is named LOGL_ROOT_PATH and may be set to the path to the root of the ibl_convert directory tree. For example:

`export LOGL_ROOT_PATH=/home/user/ibl_convert`

Running ls $LOGL_ROOT_PATH should list, among other things, this README file and the resources direcory.

Mac OS X building

Building on Mac OS X is fairly simple:

brew install cmake assimp glm glfw
mkdir build
cd build
cmake ../.
make -j8