Fixed a rendering issue on AMD RDNA2, e.g. RX 6900 XT (Issue #36, PR #37) due to missing non-uniform hint.
- Upgrade to latest Vulkan SDK (1.2.176).
- Upgrade to vcpkg 2021.04.30.
- Use ImGuiFreeType for better font rendering.
- Pick a device that supports ray tracing in case there are multiple devices, e.g. integrated GPU (PR #49).
- Recreate swapchain on VK_SUBOPTIMAL_KHR (PR #35).
- Fix more validation errors.
