AMD Gpu's can't render Cycles volume materials. What is required to start building one on OpenCl ?
Where to start from?
Here is the list what still is not supported on AMD cards.
https://www.blender.org/manual/render/cycles/features.html
Anyone,
also HDR (Float) images are not supported in OpenCL inside Blender.
Could you tell where to find source and help how to implement that?