wehub-resource-sync
62 lines
2.2 KiB
C#
62 lines
2.2 KiB
C#
using System.Runtime.InteropServices;
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namespace T3.Core.Rendering;
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[StructLayout(LayoutKind.Explicit, Size = 4 * 4 * 4 * 10)]
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public struct TransformBufferLayout
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{
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public TransformBufferLayout(Matrix4x4 cameraToClipSpace, Matrix4x4 worldToCamera, Matrix4x4 objectToWorld)
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{
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Matrix4x4.Invert(cameraToClipSpace, out var clipSpaceToCamera);
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Matrix4x4.Invert(worldToCamera, out var cameraToWorld);
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Matrix4x4.Invert(objectToWorld, out var worldToObject);
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WorldToClipSpace = Matrix4x4.Multiply(worldToCamera, cameraToClipSpace);
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ClipSpaceToWorld = Matrix4x4.Multiply(clipSpaceToCamera, cameraToWorld);
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ObjectToCamera = Matrix4x4.Multiply(objectToWorld, worldToCamera);
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ObjectToClipSpace = Matrix4x4.Multiply(ObjectToCamera, cameraToClipSpace);
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CameraToClipSpace = Matrix4x4.Transpose(cameraToClipSpace);
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// transpose all as mem layout in hlsl constant buffer is row based
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CameraToClipSpace = Matrix4x4.Transpose(cameraToClipSpace);
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ClipSpaceToCamera = Matrix4x4.Transpose(clipSpaceToCamera);
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WorldToCamera = Matrix4x4.Transpose(worldToCamera);
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CameraToWorld = Matrix4x4.Transpose(cameraToWorld);
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WorldToClipSpace = Matrix4x4.Transpose(WorldToClipSpace);
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ClipSpaceToWorld = Matrix4x4.Transpose(ClipSpaceToWorld);
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ObjectToWorld = Matrix4x4.Transpose(objectToWorld);
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WorldToObject = Matrix4x4.Transpose(worldToObject);
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ObjectToCamera = Matrix4x4.Transpose(ObjectToCamera);
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ObjectToClipSpace = Matrix4x4.Transpose(ObjectToClipSpace);
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}
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[FieldOffset(0)]
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public Matrix4x4 CameraToClipSpace;
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[FieldOffset(64)]
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public Matrix4x4 ClipSpaceToCamera;
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[FieldOffset(128)]
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public Matrix4x4 WorldToCamera;
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[FieldOffset(192)]
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public Matrix4x4 CameraToWorld;
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[FieldOffset(256)]
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public Matrix4x4 WorldToClipSpace;
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[FieldOffset(320)]
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public Matrix4x4 ClipSpaceToWorld;
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[FieldOffset(384)]
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public Matrix4x4 ObjectToWorld;
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[FieldOffset(448)]
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public Matrix4x4 WorldToObject;
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[FieldOffset(512)]
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public Matrix4x4 ObjectToCamera;
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[FieldOffset(576)]
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public Matrix4x4 ObjectToClipSpace;
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} |