Ray Tracing In Vulkan Release 6
Fixed several issues encountered when trying to run the ray tracer on AMD RX 6900 XT (thanks to @VoidPtr74 for assisting with both his time and hardware).
- Upgraded ImGui Vulkan and GLFW backends with source from ImGui 1.80.
- Fixed acceleration structure scratch memory offsets not always being properly aligned.
- Fixed min swap chain images being 1, we expected at least 2.
- Fixed incorrect LoadOp and initial layout for ImGui render pass (solved the graphic corruption on the 6900 XT, Issue #24).