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phase(N.5) Task 11: translucency partition contract test

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Locks in Decision 2 (Opaque + ClipMap → opaque indirect; AlphaBlend +
Additive + InvAlpha → transparent indirect). Catches future refactors
that drift the partition — silent visual regression otherwise (groups
rendered in the wrong pass with the wrong blend state).

Adds public static IsOpaquePublic shim on WbDrawDispatcher; the
underlying IsOpaque stays private.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Erik 2026-05-08 20:53:36 +02:00
parent f533414edf
commit cfe1ca3151
2 changed files with 32 additions and 0 deletions
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25
tests/AcDream.Core.Tests/Rendering/Wb/WbDrawDispatcherTranslucencyTests.cs Normal file
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using AcDream.App.Rendering.Wb;
using AcDream.Core.Meshing;
using Xunit;
namespace AcDream.Core.Tests.Rendering.Wb;
/// <summary>
/// Locks in the N.5 translucency partition contract (spec Decision 2).
/// If the partition drifts, the dispatcher's opaque + transparent indirect
/// passes will silently render the wrong groups in the wrong pass — visible
/// regression that's hard to spot in code review.
/// </summary>
public sealed class WbDrawDispatcherTranslucencyTests
{
[Theory]
[InlineData(TranslucencyKind.Opaque, true)]
[InlineData(TranslucencyKind.ClipMap, true)]
[InlineData(TranslucencyKind.AlphaBlend, false)]
[InlineData(TranslucencyKind.Additive, false)]
[InlineData(TranslucencyKind.InvAlpha, false)]
public void IsOpaque_PartitionsByKind(TranslucencyKind kind, bool expected)
{
Assert.Equal(expected, WbDrawDispatcher.IsOpaquePublic(kind));
}
}