bb5acab9e6
Carry TerrainTex.TexTiling through the terrain atlas and upload a layer-indexed table to the modern bindless shader so base, overlay, and road textures repeat at retail scale. Keep alpha masks cell-scaled and preserve retail's verified source-level-zero high-detail selection. Add the named-retail pseudocode, WorldBuilder/ACE/ACME cross-reference, adapter conformance tests, and inventory documentation so a future renderer migration keeps the contract. Co-Authored-By: Codex <noreply@openai.com>
66 lines
2 KiB
C#
66 lines
2 KiB
C#
using AcDream.App.Rendering;
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namespace AcDream.App.Tests.Rendering;
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public sealed class TerrainTextureTilingTableTests
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{
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[Fact]
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public void Build_MapsDatRepeatCountsToAtlasLayers()
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{
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var table = TerrainTextureTilingTable.Build(
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[
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(Layer: 0u, RepeatCount: 4u),
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(Layer: 7u, RepeatCount: 2u),
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(Layer: 32u, RepeatCount: 8u),
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]);
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Assert.Equal(TerrainTextureTilingTable.LayerCapacity, table.Length);
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Assert.Equal(4f, table[0]);
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Assert.Equal(2f, table[7]);
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Assert.Equal(8f, table[32]);
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}
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[Fact]
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public void Build_DefaultsOnlyUnusedLayersToOne()
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{
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var table = TerrainTextureTilingTable.Build(
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[
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(Layer: 3u, RepeatCount: 0u),
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]);
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Assert.Equal(1f, table[2]);
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Assert.Equal(0f, table[3]);
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Assert.Equal(1f, table[4]);
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}
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[Fact]
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public void Build_RejectsLayersTheShaderCannotAddress()
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{
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var ex = Assert.Throws<InvalidOperationException>(() =>
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TerrainTextureTilingTable.Build(
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[
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(Layer: (uint)TerrainTextureTilingTable.LayerCapacity, RepeatCount: 1u),
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]));
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Assert.Contains("exceeds the shader capacity", ex.Message);
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}
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[Fact]
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public void ModernShader_AppliesTheOwningLayersRepeatCountToEveryTerrainSample()
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{
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string shaderPath = Path.Combine(
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AppContext.BaseDirectory,
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"Rendering",
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"Shaders",
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"terrain_modern.frag");
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string shader = File.ReadAllText(shaderPath);
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Assert.Contains("uniform float uTexTiling[36];", shader);
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Assert.Contains("baseUV * terrainTiling(pOverlay0.z)", shader);
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Assert.Contains("baseUV * terrainTiling(pOverlay1.z)", shader);
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Assert.Contains("baseUV * terrainTiling(pOverlay2.z)", shader);
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Assert.Contains("baseUV * terrainTiling(pRoad0.z)", shader);
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Assert.Contains("vBaseUV * terrainTiling(vBaseTexIdx)", shader);
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Assert.DoesNotContain("const float TILE", shader);
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}
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}
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