Distant Horizons for VulkanMod

Changelog — 2.4.6+vm.2

Added

• SSAO (screen-space ambient occlusion) — 2-pass Vulkan post-process with configurable strength, bias, radius, and sample count. Respects all DH SSAO config settings.
• Fog rendering — distance fog and height fog with all three falloff types (linear, exponential, exponential squared) and all 10 mixing modes. Respects all DH fog config settings including underwater override.
• Noise/dithering — procedural per-block noise applied to LOD terrain. Controlled by the existing noise config (enable, steps, intensity, dropoff).
• Fade/clip distance transitions between MC terrain and LODs.

Fixed

• GPU memory leak where destroyed LOD sections were never freed from the Vulkan buffer cache.
• GPU memory leak where uploadVertexData() allocated new buffers every frame instead of reusing cached ones.
• LOD depth values now use MC's projection matrix, fixing LODs rendering in front of vanilla terrain.