now vulkan can do screenshots too. however, it depends on blits being
available between swapchain and rgba8 formats, so if it's not the case
for some reason, the resulting image will have mixed components.
make all geoms share the same constant vertex offset so that continuous indices can be exploited to generate only a single draw call for a group of geometries with the same texture
this is mostly copied from ray tracing gems 2 chapter 7 (Texture Coordinate Gradients Estimation for Ray Cones, by Wessam Bahnassi).
There's a weird bit about radians vs degrees. We'll figure it out later when the book becomes available.
track brush models movement and update lights grid clusters with model transform and stuff
also implement animated textures for rtx
and also increase per-cluster lights limits
TLAS creation pattern ended up allocating memory in a temporary region. It was later reused for BLAS data, and subsequently corrupted by TLAS rebuild.
Also fixed memory leak, added freeze-models command, added model debug code into shaders, etc.
Unfortunately Xash3D doesn't allow us to destroy models properly.
It doesn't call Mod_ProcessRenderData for all brush models (only map).
And by the time we get into R_Shutdown all models are already gone, so
we can't enumerate and destroy them properly.
Toilet contained brush model with presumably water surfaces which
were not loaded due to how we treat surface flags. That ended up
creating a model with no geometries, which is just rude.
We don't try to render those kind of models now.
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
This is a massive hack, because we hardcoded some valve/lights.rad file
right into vk_rtx.c, and this is most certainly is not correct data. We
expect maps to have more custom rad file entries.
TODO: consult https://github.com/MaestroFenix/Half-Life-Resized-Maps
Also, emissive surfaces are no importance sampled, so it's noise fest.
This was an attempt to add map lighting w/o lightmaps. Unfortunately
there are just not enought of them to explain all light in maps. We're
missing something else. A lot of it.
