From 8e13e7e2874adc8982e16d1d2ed2e28d7480b45f Mon Sep 17 00:00:00 2001
From: chai <215380520@qq.com>
Date: Sun, 19 May 2024 16:05:58 +0800
Subject: +1.57

---
 .../NGS.MeshFusionPro/VertexBufferUtil.cs          | 124 +++++++++++++++++++++
 1 file changed, 124 insertions(+)
 create mode 100644 Thronefall_1_57/Decompile/NGS.MeshFusionPro/VertexBufferUtil.cs

(limited to 'Thronefall_1_57/Decompile/NGS.MeshFusionPro/VertexBufferUtil.cs')

diff --git a/Thronefall_1_57/Decompile/NGS.MeshFusionPro/VertexBufferUtil.cs b/Thronefall_1_57/Decompile/NGS.MeshFusionPro/VertexBufferUtil.cs
new file mode 100644
index 0000000..e409ce5
--- /dev/null
+++ b/Thronefall_1_57/Decompile/NGS.MeshFusionPro/VertexBufferUtil.cs
@@ -0,0 +1,124 @@
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.Rendering;
+
+namespace NGS.MeshFusionPro;
+
+public static class VertexBufferUtil
+{
+	private static readonly Dictionary<VertexAttribute, VertexAttributeDescriptor> StandardAttributesMap;
+
+	private static readonly VertexAttributeDescriptor[] LightweightAttributesLayout;
+
+	private static List<VertexAttributeDescriptor> _meshAttributes;
+
+	static VertexBufferUtil()
+	{
+		LightweightAttributesLayout = new VertexAttributeDescriptor[5]
+		{
+			new VertexAttributeDescriptor(VertexAttribute.Position, VertexAttributeFormat.Float32, 3, 0),
+			new VertexAttributeDescriptor(VertexAttribute.Normal, VertexAttributeFormat.SNorm8, 4),
+			new VertexAttributeDescriptor(VertexAttribute.Tangent, VertexAttributeFormat.SNorm8, 4),
+			new VertexAttributeDescriptor(VertexAttribute.TexCoord0, VertexAttributeFormat.Float16, 2),
+			new VertexAttributeDescriptor(VertexAttribute.TexCoord1, VertexAttributeFormat.Float16, 2)
+		};
+		StandardAttributesMap = new Dictionary<VertexAttribute, VertexAttributeDescriptor>
+		{
+			{
+				VertexAttribute.Position,
+				new VertexAttributeDescriptor(VertexAttribute.Position, VertexAttributeFormat.Float32, 3, 0)
+			},
+			{
+				VertexAttribute.Normal,
+				new VertexAttributeDescriptor(VertexAttribute.Normal)
+			},
+			{
+				VertexAttribute.Tangent,
+				new VertexAttributeDescriptor(VertexAttribute.Tangent, VertexAttributeFormat.Float32, 4)
+			},
+			{
+				VertexAttribute.TexCoord0,
+				new VertexAttributeDescriptor(VertexAttribute.TexCoord0, VertexAttributeFormat.Float32, 2)
+			},
+			{
+				VertexAttribute.TexCoord1,
+				new VertexAttributeDescriptor(VertexAttribute.TexCoord1, VertexAttributeFormat.Float32, 2)
+			},
+			{
+				VertexAttribute.TexCoord2,
+				new VertexAttributeDescriptor(VertexAttribute.TexCoord2, VertexAttributeFormat.Float32, 2)
+			},
+			{
+				VertexAttribute.TexCoord3,
+				new VertexAttributeDescriptor(VertexAttribute.TexCoord3, VertexAttributeFormat.Float32, 2)
+			}
+		};
+		_meshAttributes = new List<VertexAttributeDescriptor>();
+	}
+
+	public static bool IsStandardBuffer(Mesh mesh)
+	{
+		mesh.GetVertexAttributes(_meshAttributes);
+		for (int i = 0; i < _meshAttributes.Count; i++)
+		{
+			VertexAttributeDescriptor vertexAttributeDescriptor = _meshAttributes[i];
+			VertexAttributeDescriptor vertexAttributeDescriptor2 = StandardAttributesMap[vertexAttributeDescriptor.attribute];
+			if (vertexAttributeDescriptor.format != vertexAttributeDescriptor2.format)
+			{
+				return false;
+			}
+			if (vertexAttributeDescriptor.dimension != vertexAttributeDescriptor2.dimension)
+			{
+				return false;
+			}
+		}
+		return true;
+	}
+
+	public static bool IsLightweightBuffer(Mesh mesh)
+	{
+		mesh.GetVertexAttributes(_meshAttributes);
+		if (_meshAttributes.Count != LightweightAttributesLayout.Length)
+		{
+			return false;
+		}
+		for (int i = 0; i < _meshAttributes.Count; i++)
+		{
+			VertexAttributeDescriptor vertexAttributeDescriptor = _meshAttributes[i];
+			VertexAttributeDescriptor vertexAttributeDescriptor2 = LightweightAttributesLayout[i];
+			if (vertexAttributeDescriptor.attribute != vertexAttributeDescriptor2.attribute)
+			{
+				return false;
+			}
+			if (vertexAttributeDescriptor.format != vertexAttributeDescriptor2.format)
+			{
+				return false;
+			}
+			if (vertexAttributeDescriptor.dimension != vertexAttributeDescriptor2.dimension)
+			{
+				return false;
+			}
+		}
+		return true;
+	}
+
+	public static void ToStandardBuffer(Mesh mesh)
+	{
+		if (!IsStandardBuffer(mesh))
+		{
+			for (int i = 0; i < _meshAttributes.Count; i++)
+			{
+				_meshAttributes[i] = StandardAttributesMap[_meshAttributes[i].attribute];
+			}
+			mesh.SetVertexBufferParams(mesh.vertexCount, _meshAttributes.ToArray());
+		}
+	}
+
+	public static void ToLightweightBuffer(Mesh mesh)
+	{
+		if (!IsLightweightBuffer(mesh))
+		{
+			mesh.SetVertexBufferParams(mesh.vertexCount, LightweightAttributesLayout);
+		}
+	}
+}
-- 
cgit v1.1-26-g67d0