This is a workaround for inconsistent memory management: some subsystems completely clear their memories and start allocating from zero. This leads to overwriting long lived sprite model with garbage.
TODO FIXME
Make sure that things get created and destroyed at the right times.
Allow longer-than-map block allocations.
Fix brush model leaks -- previously they weren't destroyed on map
change/game exit properly. Also free geometry ranges accordingly.
Add a note about map loading process, and various models lifetimes.
The intent is to manage long-vs-single-frame allocations better.
Previously long allocations were map-long bump allocations, and couldn't be freed
mid-map, as there was neither a reference to the allocated range, nor a
way to actully free it.
Add a two-mode block allocator (similar to previous debuffer alloc) that
allows making long and once allocations. But now long allocations are
backed by "pool" allocator and return references to the range.
This commit doesn't do the deallocation yet, so map chaning doesn't yet
work.
- explicitly group cache-related fields
- move kusochki allocation to where it's actually used
this makes a step towards better blas management from bottom up
Draft the new accel/blas apis. Consolidate everything accel-related into
vk_ray_accel.c. Start splitting into more atomic functions. Prepare for
blas-model+kusochki split. etc etc.
The new code isn't really used yet.
1. Rename models passed to TLAS to instances.
2. Remove BLAS validation: old, doesn't make sense anymore.
3. Draft general blas mgmt approach in NOTES.md
Still has some artifacts, but is generally rather close. Will look at
this again when caching studio model BLASes, as we'd be able to look at
them without extra animations.
- We're not going to implement R_ShowTextures for ref_vk, at least in
its gl form.
- It seems that Mod_GetCurrentVis() can just return NULL, at least
ref_soft does it.
Fixes#269, fixes#254
This is to more clearly distinguish between simple blended things that
don't participate in lighting, and future more involved blending with
refraction and being affected by light
