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perf(sky): skip the night-sky lattice entirely while the day fade is zero

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The enhanced sky multiplied the full 4-tier star lattice by a night
factor of 0.0 all day long. Early-out when the star layer's lighting
product says daytime, so the pack's night sky costs nothing outside
dusk-to-dawn. sky.frag.spv re-pinned.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
Erik 2026-08-23 18:09:04 +02:00
parent b8cfee6d08
commit 91084b9a83
4 changed files with 8 additions and 2 deletions
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2
tests/AcDream.App.Tests/Rendering/Gpu/Vk/VulkanShaderManifestTests.cs
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@ -52,7 +52,7 @@ public sealed class VulkanShaderManifestTests
// override, retail's GameSky::Draw @0x00506FF0 rule (see
// SkyFogRuleTests). A deliberate default-path change, reviewed
// with the world-fog-range fix in the same commit.
["sky.frag.spv"] = "2d2de4080c7f4b0885aee4441e37a1725d3f30661b45773bcb39383674b1718b",
["sky.frag.spv"] = "e307a7f3cf84aada86db7c2859c55841a650b46732f12149986562cef0a90ca8",
["sky.vert.spv"] = "3b51945fa4ff1be1604144df92866bdd47aade22f9dd90267591ef36adb28cde",
["terrain_modern.frag.spv"] = "7b3cdb01b837ed77ee20559a81c1ce5c9d5395300efcc072560ab0be3c5a1af9",
["terrain_modern.vert.spv"] = "9f4cb221ea6aed94a8d23af6cb8e3f3ed96c3cce6e50d135a72d3b55667b1557",