0acc3728ed
MPL-2.0 is file-level and the Phacelle port sat inside MIT files. phacelle and CultPhasor now live in math.Phacelle.cs and CultPhasor.cs, and cultmath_phacelle in CultMath.Phacelle.hlsl (included by CultMath.hlsl, both tracked copies), each with the MPL header and Johansen / Luke Mitchell attribution. math stays one partial class, so math.phacelle is called exactly as before. The GameCult.Math package declares MIT AND MPL-2.0 and packs THIRD-PARTY-NOTICES.md and the new include; the Unity LICENSE.md points at CultLib; build-unity-package.ps1 requires the new include. The random sweeps never met a cell whose box bound sits just under the 2.25 cut while its weight is still nonzero, so cuts of 2.245, 2.24 and 2.2 survived. Six hard-coded points (found by an offline search) sit next to such cells; the C# pruned-vs-unpruned test and the HLSL mirror test both use them, with a witness check that re-derives the property from the hash. Docs: the prune keeps about 45 of 64 cells (14 is the nonzero-weight count), the support radius is 1.49998 (d^2 = 2.24995), normalization's range and saturation, W = 0 only for adversarial hashes, and the support-edge gradient seam size. Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
92 lines
3 KiB
C#
92 lines
3 KiB
C#
using Xunit;
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namespace CultMath.Tests;
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public sealed class HlslMirrorTests
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{
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[Fact]
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public void HlslMirrorDoesNotPublishGeometryKernels()
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{
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var source = HlslSourceCompatibilityTests.ReadShaderSource(GetCultMathRoot());
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Assert.DoesNotContain("AdvancedErosionFilter.hlsl", source);
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Assert.DoesNotContain("Planetary.hlsl", source);
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Assert.DoesNotContain("spherical_erosion", source);
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Assert.DoesNotContain("planetary_radial_refinement", source);
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}
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[Fact]
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public void HlslMirrorPublishesCultMathPrimitives()
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{
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var include = HlslSourceCompatibilityTests.ReadShaderSource(GetCultMathRoot());
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var requiredSymbols = new[]
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{
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"cultmath_radians",
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"cultmath_degrees",
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"cultmath_frac",
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"cultmath_clamp",
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"cultmath_saturate",
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"cultmath_lerp",
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"cultmath_step",
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"cultmath_smoothstep",
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"cultmath_smootherstep",
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"cultmath_lengthsq",
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"cultmath_distance",
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"cultmath_reflect",
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"cultmath_rotate",
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"cultmath_csum",
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"cultmath_decay",
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"cultmath_damp",
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"cultmath_catmullrom",
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"cultmath_quadratic_bezier",
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"cultmath_cubic_bezier",
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"cultmath_hash",
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"cultmath_pcg(uint",
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"cultmath_pcg3d(int3",
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"cultmath_pcg4d(int4",
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"cultmath_value_noise",
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"cultmath_snoise(float2",
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"cultmath_snoise(float3",
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"cultmath_value_noise_bicubic",
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"cultmath_value_noise_texture",
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"cultmath_value_noise_texture_bicubic",
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"cultmath_smin_grad",
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"cultmath_cellular",
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};
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foreach (var symbol in requiredSymbols)
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{
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Assert.Contains(symbol, include);
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}
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// HLSL's normalize intrinsic is the contract; a mirror copy would only restate it.
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Assert.DoesNotContain("cultmath_normalize", include);
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}
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[Theory]
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[InlineData("CultMath.hlsl")]
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[InlineData("CultMath.Phacelle.hlsl")]
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public void UnityPackageShaderIsIdenticalToTheCanonicalShader(string name)
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{
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var root = GetCultMathRoot();
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Assert.Equal(
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File.ReadAllText(Path.Combine(root, "shaders", name)).ReplaceLineEndings("\n"),
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File.ReadAllText(Path.Combine(root, "unity", "org.gamecult.cultmath", "Shaders", name)).ReplaceLineEndings("\n"));
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}
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private static string GetCultMathRoot()
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{
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var directory = new DirectoryInfo(AppContext.BaseDirectory);
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while (directory is not null)
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{
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var monorepoPackage = Path.Combine(directory.FullName, "packages", "cultmath");
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if (File.Exists(Path.Combine(monorepoPackage, "shaders", "CultMath.hlsl")))
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{
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return monorepoPackage;
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}
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directory = directory.Parent;
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}
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throw new InvalidOperationException("Could not locate the CultMath package root.");
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}
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}
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