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phase(N.4): WbFoundationFlag scaffold for ACDREAM_USE_WB_FOUNDATION env var

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Creates the src/AcDream.App/Rendering/Wb/ folder and the static flag
gate that other call sites will import. Read once at static-init time.
Set ACDREAM_USE_WB_FOUNDATION=1 to enable WB foundation routing.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Erik 2026-05-08 13:06:12 +02:00
parent 506b86ba86
commit 81b5ed8c68
1 changed files with 22 additions and 0 deletions
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src/AcDream.App/Rendering/Wb/WbFoundationFlag.cs Normal file
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namespace AcDream.App.Rendering.Wb;
/// <summary>
/// Process-lifetime cache of <c>ACDREAM_USE_WB_FOUNDATION</c> env var.
/// Read once at static-init time; all consumers import this rather than
/// re-reading the env var per call (env-var lookups on Windows are not
/// free at hot-path cadence).
///
/// <para>
/// Set <c>ACDREAM_USE_WB_FOUNDATION=1</c> to route static-scenery + atlas
/// content through WB's <c>ObjectMeshManager</c>; per-instance customized
/// content (server <c>CreateObject</c> entities) takes the existing
/// <see cref="TextureCache.GetOrUploadWithPaletteOverride"/> path either
/// way. Flag becomes default-on at end of Phase N.4 after visual
/// verification.
/// </para>
/// </summary>
public static class WbFoundationFlag
{
public static bool IsEnabled { get; } =
System.Environment.GetEnvironmentVariable("ACDREAM_USE_WB_FOUNDATION") == "1";
}