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Fix triplanar texture mapping when using Large Worlds

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#3001
This commit is contained in:
Wojtek Figat
2025-02-11 00:31:37 +01:00
parent a5fffc0c9e
commit 58090aa6d6
4 changed files with 21 additions and 3 deletions
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5
Source/Engine/Tools/MaterialGenerator/MaterialGenerator.Textures.cpp
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@@ -697,10 +697,11 @@ void MaterialGenerator::ProcessGroupTextures(Box* box, Node* node, Value& value)
auto result = writeLocal(Value::InitForZero(ValueType::Float4), node);
const String triplanarTexture = String::Format(TEXT(
" {{\n"
" float3 worldPos = input.WorldPosition.xyz * ({1} * 0.001f);\n"
" float tiling = {1} * 0.001f;\n"
" float3 worldPos = (input.WorldPosition.xyz + GetLargeWorldsTileOffset(1.0f / tiling)) * tiling;\n"
" float3 normal = abs(input.TBN[2]);\n"
" normal = pow(normal, {2});\n"
" normal = normal / (normal.x + normal.y + normal.z);\n"
" normal = normalize(normal);\n"
" {3} += {0}.{4}(SamplerLinearWrap, worldPos.yz{5}) * normal.x;\n"
" {3} += {0}.{4}(SamplerLinearWrap, worldPos.xz{5}) * normal.y;\n"
" {3} += {0}.{4}(SamplerLinearWrap, worldPos.xy{5}) * normal.z;\n"