This became basically a rewrite in the end, and it got too awkward to
split these commits in any meaningful way.
The goals here were primarily to:
- Support serializing SPIR-V and load SPIR-V.
To do this robustly requires a lot more validation and checks to make
sure end up compiling the same SPIR-V that we load from cache.
This is critical for performance when games have primed their pipeline
libraries and expect that loading a PSO should be fast. Without this,
we will hit vkd3d-shader for every PSO, causing very long load times.
- Implement the required validation for mismatched PSO descriptions.
- Rewrite the binary layout of the pipeline library for flexibility
concerns and performance.
If the pipeline library is mmap-ed from disk - which appears to be
the intended use - we only need to scan through the TOC to fully parse
the library contents.
From a flexibility concern, a blob needs to support inlined data,
but a library can use referential links. We introduce separate
hashmaps which store deduplicated SPIR-V and pipeline cache blobs,
which significantly drop memory and storage requirements.
For future improvements, it should be fairly easy to add information
which lets us avoid SPIR-V or pipeline cache data altogether if
relevant changes to Vulkan/drivers are made.
Signed-off-by: Hans-Kristian Arntzen <post@arntzen-software.no>
Useful for test suite since a test can be comprised of several smaller
submissions, and it's easier to debug if we have one trace.
Signed-off-by: Hans-Kristian Arntzen <post@arntzen-software.no>
Hans-Kristian Arntzen
Joshua Ashton