prefer a sourced Vulkan tarball SDK on Linux and validate its header and loader layout
retain system header/library discovery when no SDK environment is configured
discover Slang through SLANG_SDK or the Vulkan SDK
copy the complete versioned Slang runtime library set beside engine binaries
Why
Ubuntu system packages split Vulkan and Slang across system paths, while the former LunarG apt SDK left Slang older than the engine-facing API. The official tarball keeps compatible Vulkan and Slang components together, but places the Vulkan loader in a separate SDK-relative directory.
Validation
clean Debug generation and full compile on the Ubuntu self-hosted runner using Vulkan SDK 1.4.357.1 and Slang 2026.13.1
compiled the restored SLANG_STAGE_DISPATCH code without a compatibility bridge
verified generated makefiles reference the tarball include, Slang library, and Vulkan loader directories
verified Engine-Tests resolves the tarball Vulkan loader and bundled versioned Slang runtime library
This file contains hidden or 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
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
Summary
Why
Ubuntu system packages split Vulkan and Slang across system paths, while the former LunarG apt SDK left Slang older than the engine-facing API. The official tarball keeps compatible Vulkan and Slang components together, but places the Vulkan loader in a separate SDK-relative directory.
Validation