- vk_pipeline: extract kColorWriteAll constant from 4 duplicated RGBA
bitmask expressions across blend mode functions, with why-comment
- frustum: name kMinNormalLenSq epsilon (1e-8) with why-comment —
prevents division by zero on degenerate planes
- dbc_loader: add why-comment on DBC field width validation — all
fields are fixed 4-byte uint32 per format spec
- pin_auth: replace 0x30 hex literal with '0' char constant, add
why-comment on ASCII encoding for server HMAC compatibility
Create a VkPipelineCache at device init, loaded from disk if available.
All 65 pipeline creation calls across 19 renderer files now use the
shared cache. On shutdown, the cache is serialized to disk so subsequent
launches skip redundant shader compilation.
Cache path: ~/.local/share/wowee/pipeline_cache.bin (Linux),
~/Library/Caches/wowee/ (macOS), %APPDATA%\wowee\ (Windows).
Stale/corrupt caches are handled gracefully (fallback to empty cache).
Player interaction ripples: vertex shader adds radial damped-sine displacement
centered on player position, fragment shader adds matching normal perturbation
for specular highlights. Player XY packed into shadowParams.zw, ripple strength
into fogParams.w. Separate 1x render pass for water when MSAA is active to
avoid MSAA-induced darkening — water renders after main pass resolves, using
the resolved swapchain image and depth resolve target. Water 1x framebuffers
rebuilt on swapchain recreate (window resize).
