mathe/Library/PackageCache/com.unity.shadergraph@14.0.8/Editor/Data/Graphs/MatrixShaderProperty.cs

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2024-09-20 20:30:10 +02:00
using System;
using UnityEditor.ShaderGraph.Internal;
using UnityEngine;
namespace UnityEditor.ShaderGraph
{
[Serializable]
abstract class MatrixShaderProperty : AbstractShaderProperty<Matrix4x4>
{
internal override bool isExposable => false;
internal override bool isRenamable => true;
internal override string GetHLSLVariableName(bool isSubgraphProperty, GenerationMode mode)
{
HLSLDeclaration decl = GetDefaultHLSLDeclaration();
if (decl == HLSLDeclaration.HybridPerInstance)
return $"UNITY_ACCESS_HYBRID_INSTANCED_PROP({referenceName}, {concretePrecision.ToShaderString()}4x4)";
else
return base.GetHLSLVariableName(isSubgraphProperty, mode);
}
internal override HLSLDeclaration GetDefaultHLSLDeclaration()
{
if (overrideHLSLDeclaration)
return hlslDeclarationOverride;
// Since Matrices cannot be exposed, the default declaration rules would set them to Global.
// However, this means new Matrix properties would be different from all other float-based property types
// (all others use UnityPerMaterial by default, because they are exposed).
// So instead, we override the default rules so that Matrices always default to UnityPerMaterial
return HLSLDeclaration.UnityPerMaterial;
}
internal override void ForeachHLSLProperty(Action<HLSLProperty> action)
{
HLSLDeclaration decl = GetDefaultHLSLDeclaration();
// HLSL decl is always 4x4 even if matrix smaller
action(new HLSLProperty(HLSLType._matrix4x4, referenceName, decl, concretePrecision));
}
}
}