I have some tool for you, maybe helpful to convert OpenVDB files into a tiled OpenEXR texture.
You will find it at Link
Can also be a starting point to write your own volume texture generator.
EXR Textures from left to right (Download) :
- sixteenth - 1134 x 1540 res - 9x10 tiles - 3M
- eighth - 2250 x 6447 res - 9x21tiles - 23M
- quarter - 8466 x 12873 res - 17x21tiles - 185M
VDB Source: Data Sets?