Universal-FrameFX 1.4.1-linux-preview.4

Universal-FrameFX 1.4.1-linux-preview.4

Native Linux Vulkan/Wayland preview, fixing the startup segfault.

What's new vs preview.3

• Fixed a crash right after the Vulkan device was created: ImGui's Vulkan backend was built to use function pointers that were never loaded, so it called a null vkCreateSampler. It now links against the Vulkan loader directly.
• GPUs without Vulkan 1.2 or VK_KHR_swapchain are skipped up front and listed in the startup error dialog instead of failing later.
• Checked on the build box with Lavapipe under Xvfb: the main window opens.

Still included

CSR 1.2, CSR 2.0 upscale, CSR 2.0 InterpFast FG; Game Mode/gamescope path still experimental

Honest limits

• Real-GPU and Deck Game Mode QA: unverified (Lavapipe only on the build box)
• CSR AI / FSR2+ / XeSS / LarkquillAI / DLSS: not on Linux yet
• This is a prerelease; Windows Beta10 remains the Latest release