added vk_only for old -rtx behavior (full disable rtx pipeline)
remove -vkskipdev and skip_first_device as unused and obsolete
remove obsolete check ("missing ray tracing extensions")
addedv VK_LoadCvarsRTX for rtx commands
remove vk_rtx_prev_frame_blend_factor as an outdated command
added vk_deviceid as a stub for video device selection
vk_rtx_reload_materials no longer shown when vk_core.rtx = 0
1. add a way to enable only certain lights
2. add commented out code to highligh affected light clusters, culling
modes, etc.
3. add affected light clusters counter when collecting lights
use bsp/pvs-based visibility data for acceleration:
+ fps 5 -> 60
- correctness: some areas have too many lights, which ends up culling visible ones too
also fix shadow artefacts
Lightstyles remain fixed for the entire map duration. Need to implement either texture reupload in VK, or devise some other scheme of updating ligtmaps w/o texture reupload (lightstylevalues uniform buffers?).
