Fix include paths to support both vendored and system-installed glslang.
Remove usage of the private `StandAlone` bits.
Requires us to vendor a copy of `DefaultTBuiltInResource` (or provide our own
customized one) as glslang doesn't provide it in its public API.
Also removes unused C interface as it's not well encapsulated and depends on
`StandAlone`.
Fixes#56307.
Updated glslang and Vulkan headers/loader following the instructions found in thirdparty/README.
glslang was updated to the 'known good' matching Vulkan SDK version 1.2.162.0. Vulkan headers and loader were updated to the commit tagged with sdk-1.2.162.0.
'vk_mem_alloc.h' and 'vk_mem_alloc.c' are unchanged since there hasn't been a new tagged release since 2.3.0.
Here's the Vulkan release notes for this update:
https://vulkan.lunarg.com/doc/sdk/1.2.162.0/windows/release_notes.html
Reverted and removed the unnecessary fix-mingw-snprintf patch for glslang as well as the mention of it in thirdparty/README.md.
Actually sdk-1.2.154.1 for Vulkan-Loader.
glslang is updated to bacaef3237c515e40d1a24722be48c0a0b30f75f which is the
known-good version for Vulkan-ValidationLayers 1.2.154.0.
COPYRIGHT.txt was synced with the current version of the glslang LICENSE.txt,
and `glslang/register_types.cpp` now uses the upstream definition for its
default builtin resource instead of hardcoding it.
-Added VulkanContext
-Added an X11 implementation
-Added a rendering device abstraction
-added a Vulkan rendering device abstraction
-Engine does not work, only shows Godot logo (run it from bin/)
