Backport Do not feed &"" to D3DCompile (#5812) to 0.18 #5834
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
A recent change by rustc, now in 1.79-stable, makes empty str constants point to the same location: 0x01. This is an optimization of sorts, not stable behavior. Code must not rely on constants having stable addresses nor should it pass &"" to APIs expecting CStrs or NULL addresses. D3DCompile will segfault if you give it such a pointer, or worse: read random garbage addresses! Pass the NULL pointer to D3DCompile if wgpu lacks a decent CString. refs: - https://learn.microsoft.com/en-us/windows/win32/api/d3dcompiler/nf-d3dcompiler-d3dcompile Co-authored-by: Jan Hohenheim <[email protected]> Co-authored-by: Brezak <[email protected]>
|
I'm not 100% sure about the wasm-bindgen bump here, as iirc there's issues around having mismatched versions of it (though the 2.88 version wgpu 0.18 uses was yanked). |
|
I'm going ot close this for now as there's not significant interest in getting this in. If it comes back, we can push it forward. |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Backport Do not feed &"" to D3DCompile (#5812) to 0.18.
Testing was just running the water example with dx12 fxc, and it worked.
Veloren seems to be on 0.18 (specifically a custom branch that includes some fixes from newer wgpu versions).
Checklist
cargo fmt.cargo clippy. If applicable, add:--target wasm32-unknown-unknown--target wasm32-unknown-emscriptencargo xtask testto run tests.CHANGELOG.md. See simple instructions inside file.