--Added panorama1 and panorama2 variations.
Bug fixes:
--crackle had a bug with Nvidia GPUs.
Code changes:
--crackle now uses real_t* for cache rather than real2. This is what was causing the bug.
--Make the local offsets array used in crackle a precalc since it's the same for all. This reduces register pressure.
--Get rid of all usages of real3, just to be safe since Nvidia doesn't like them.
--#define TOTAL_GLOBAL_SIZE_END in the OpenCL iteration kernel just for debugging purposes to see how large the parvars buffer is.
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