This method is used to generate headers for embedding files into the binary
(think about the new `#embed` feature in C23 and C++26).
While the stringification step itself was plenty fast, it then proceeded
to wrap everything using the `textwrap` module. `textwrap` is *very*
slow, as it's apparently optimized for human text.
This patch reimplements the wrapping logic using a simple regex,
resulting in a tremendous speed improvement (~6x), and switches to `map`
for the stringification itself (thanks Rémi!)
It also removes a (practically) unused argument, `initial_indent`.
The generated files are pretty much the same, with a tiny difference in
line length (for some reason the old logic overshot the requested line
length)
Raytracing shader binding table records are addressed through Vulkan
alignment rules that distinguish between the raw shader group handle size,
the per-record handle alignment, and the base alignment required for SBT
region addresses.
The previous layout treated the shader group handle size as the record
stride everywhere. This worked only on devices where the handle size
already satisfied all relevant alignment requirements. It broke down once
multiple ray generation shaders were placed in the same SBT: selecting a
non-zero raygen index advanced the raygen region address by the raw handle
size, which could produce an address that was not aligned to the required
shader group base alignment.
Separate the SBT layout into the appropriate strides:
- ray generation records use a base-aligned stride, since selecting a
raygen shader changes the SBT region start address for the dispatch.
- miss and hit records use the handle-aligned shader group stride, since
their regions start at a base-aligned address and individual records are
selected through the region stride.
This keeps the CPU-side SBT population and the dispatch-time SBT regions
using the same layout, so shader group handles are written to the same
aligned slots that Vulkan later addresses.
Fixes#118144
Fixed an issue where texture-blit shader was failing to compile when using some math constants because the code was incorrectly passing name strings into the shader
Added clamps for 16 bit float range (textures are 16 bit) to avoid overflow - particularly needed due to large values from attenuation.
Normalizing couple vectors are now done through a new safe_normalize function since some vectors can have 0 length which leads to zero division.
Stuart Carnie
Thaddeus Crews
LiveTrower
CookieBadger
Chaosus
Kaleb Reid
Dery Almas
Skyth
David Snopek
Rémi Verschelde
Antonio Caggiano
Clay John
Nolkaloid
BlueCube3310
Altay Evren Özsan
viksl
German