442 lines
19 KiB
C#
442 lines
19 KiB
C#
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using System;
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using Unity.Burst;
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using Unity.Collections;
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using Unity.Mathematics;
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using Unity.Collections.LowLevel.Unsafe;
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using UnityEngine.U2D.Common;
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namespace UnityEngine.U2D.Animation
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{
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internal enum SpriteSkinValidationResult
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{
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SpriteNotFound,
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SpriteHasNoSkinningInformation,
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SpriteHasNoWeights,
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RootTransformNotFound,
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InvalidTransformArray,
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InvalidTransformArrayLength,
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TransformArrayContainsNull,
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RootNotFoundInTransformArray,
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InvalidBoneWeights,
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Ready
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}
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internal class NativeByteArray
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{
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public int Length => array.Length;
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public bool IsCreated => array.IsCreated;
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public byte this[int index] => array[index];
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public NativeArray<byte> array
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{ get; }
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public NativeByteArray(NativeArray<byte> array)
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{
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this.array = array;
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}
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public void Dispose() => array.Dispose();
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}
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internal static class SpriteSkinUtility
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{
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internal static SpriteSkinValidationResult Validate(this SpriteSkin spriteSkin)
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{
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if (spriteSkin.spriteRenderer.sprite == null)
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return SpriteSkinValidationResult.SpriteNotFound;
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var bindPoses = spriteSkin.spriteRenderer.sprite.GetBindPoses();
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var bindPoseCount = bindPoses.Length;
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if (bindPoseCount == 0)
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return SpriteSkinValidationResult.SpriteHasNoSkinningInformation;
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if (spriteSkin.rootBone == null)
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return SpriteSkinValidationResult.RootTransformNotFound;
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if (spriteSkin.boneTransforms == null)
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return SpriteSkinValidationResult.InvalidTransformArray;
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if (bindPoseCount != spriteSkin.boneTransforms.Length)
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return SpriteSkinValidationResult.InvalidTransformArrayLength;
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var rootFound = false;
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foreach (var boneTransform in spriteSkin.boneTransforms)
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{
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if (boneTransform == null)
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return SpriteSkinValidationResult.TransformArrayContainsNull;
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if (boneTransform == spriteSkin.rootBone)
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rootFound = true;
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}
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if (!rootFound)
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return SpriteSkinValidationResult.RootNotFoundInTransformArray;
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var boneWeights = spriteSkin.sprite.GetVertexAttribute<BoneWeight>(UnityEngine.Rendering.VertexAttribute.BlendWeight);
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if (!BurstedSpriteSkinUtilities.ValidateBoneWeights(in boneWeights, bindPoseCount))
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return SpriteSkinValidationResult.InvalidBoneWeights;
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return SpriteSkinValidationResult.Ready;
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}
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internal static void CreateBoneHierarchy(this SpriteSkin spriteSkin)
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{
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if (spriteSkin.spriteRenderer.sprite == null)
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throw new InvalidOperationException("SpriteRenderer has no Sprite set");
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var spriteBones = spriteSkin.spriteRenderer.sprite.GetBones();
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var transforms = new Transform[spriteBones.Length];
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Transform root = null;
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for (int i = 0; i < spriteBones.Length; ++i)
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{
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CreateGameObject(i, spriteBones, transforms, spriteSkin.transform);
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if (spriteBones[i].parentId < 0 && root == null)
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root = transforms[i];
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}
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spriteSkin.rootBone = root;
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spriteSkin.boneTransforms = transforms;
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}
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internal static int GetVertexStreamSize(this Sprite sprite)
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{
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int vertexStreamSize = 12;
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if (sprite.HasVertexAttribute(Rendering.VertexAttribute.Normal))
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vertexStreamSize = vertexStreamSize + 12;
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if (sprite.HasVertexAttribute(Rendering.VertexAttribute.Tangent))
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vertexStreamSize = vertexStreamSize + 16;
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return vertexStreamSize;
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}
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internal static int GetVertexStreamOffset(this Sprite sprite, Rendering.VertexAttribute channel )
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{
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bool hasPosition = sprite.HasVertexAttribute(Rendering.VertexAttribute.Position);
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bool hasNormals = sprite.HasVertexAttribute(Rendering.VertexAttribute.Normal);
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bool hasTangents = sprite.HasVertexAttribute(Rendering.VertexAttribute.Tangent);
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switch(channel)
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{
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case Rendering.VertexAttribute.Position:
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return hasPosition ? 0 : -1;
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case Rendering.VertexAttribute.Normal:
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return hasNormals ? 12 : -1;
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case Rendering.VertexAttribute.Tangent:
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return hasTangents ? (hasNormals ? 24 : 12) : -1;
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}
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return -1;
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}
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private static void CreateGameObject(int index, SpriteBone[] spriteBones, Transform[] transforms, Transform root)
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{
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if (transforms[index] == null)
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{
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var spriteBone = spriteBones[index];
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if (spriteBone.parentId >= 0)
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CreateGameObject(spriteBone.parentId, spriteBones, transforms, root);
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var go = new GameObject(spriteBone.name);
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var transform = go.transform;
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if (spriteBone.parentId >= 0)
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transform.SetParent(transforms[spriteBone.parentId]);
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else
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transform.SetParent(root);
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transform.localPosition = spriteBone.position;
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transform.localRotation = spriteBone.rotation;
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transform.localScale = Vector3.one;
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transforms[index] = transform;
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}
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}
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internal static void ResetBindPose(this SpriteSkin spriteSkin)
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{
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if (!spriteSkin.isValid)
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throw new InvalidOperationException("SpriteSkin is not valid");
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var spriteBones = spriteSkin.spriteRenderer.sprite.GetBones();
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var boneTransforms = spriteSkin.boneTransforms;
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for (int i = 0; i < boneTransforms.Length; ++i)
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{
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var boneTransform = boneTransforms[i];
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var spriteBone = spriteBones[i];
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if (spriteBone.parentId != -1)
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{
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boneTransform.localPosition = spriteBone.position;
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boneTransform.localRotation = spriteBone.rotation;
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boneTransform.localScale = Vector3.one;
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}
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}
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}
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private static int GetHash(Matrix4x4 matrix)
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{
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unsafe
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{
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uint* b = (uint*)&matrix;
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{
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var c = (char*)b;
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return (int)math.hash(c, 16 * sizeof(float));
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}
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}
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}
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internal static int CalculateTransformHash(this SpriteSkin spriteSkin)
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{
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int bits = 0;
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int boneTransformHash = GetHash(spriteSkin.transform.localToWorldMatrix) >> bits;
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bits++;
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foreach (var transform in spriteSkin.boneTransforms)
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{
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boneTransformHash ^= GetHash(transform.localToWorldMatrix) >> bits;
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bits = (bits + 1) % 8;
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}
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return boneTransformHash;
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}
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internal unsafe static void Deform(Sprite sprite, Matrix4x4 rootInv, NativeSlice<Vector3> vertices, NativeSlice<Vector4> tangents, NativeSlice<BoneWeight> boneWeights, NativeArray<Matrix4x4> boneTransforms, NativeSlice<Matrix4x4> bindPoses, NativeArray<byte> deformableVertices)
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{
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var verticesFloat3 = vertices.SliceWithStride<float3>();
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var tangentsFloat4 = tangents.SliceWithStride<float4>();
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var bindPosesFloat4x4 = bindPoses.SliceWithStride<float4x4>();
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var spriteVertexCount = sprite.GetVertexCount();
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var spriteVertexStreamSize = sprite.GetVertexStreamSize();
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var boneTransformsFloat4x4 = NativeArrayUnsafeUtility.ConvertExistingDataToNativeArray<float4x4>(boneTransforms.GetUnsafePtr(), boneTransforms.Length, Allocator.None);
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byte* deformedPosOffset = (byte*)NativeArrayUnsafeUtility.GetUnsafePtr(deformableVertices);
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NativeSlice<float3> deformableVerticesFloat3 = NativeSliceUnsafeUtility.ConvertExistingDataToNativeSlice<float3>(deformedPosOffset, spriteVertexStreamSize, spriteVertexCount);
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NativeSlice<float4> deformableTangentsFloat4 = NativeSliceUnsafeUtility.ConvertExistingDataToNativeSlice<float4>(deformedPosOffset, spriteVertexStreamSize, 1); // Just Dummy.
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if (sprite.HasVertexAttribute(Rendering.VertexAttribute.Tangent))
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{
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byte* deformedTanOffset = deformedPosOffset + sprite.GetVertexStreamOffset(Rendering.VertexAttribute.Tangent);
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deformableTangentsFloat4 = NativeSliceUnsafeUtility.ConvertExistingDataToNativeSlice<float4>(deformedTanOffset, spriteVertexStreamSize, spriteVertexCount);
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}
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#if ENABLE_UNITY_COLLECTIONS_CHECKS
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var handle1 = CreateSafetyChecks<float4x4>(ref boneTransformsFloat4x4);
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var handle2 = CreateSafetyChecks<float3>(ref deformableVerticesFloat3);
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var handle3 = CreateSafetyChecks<float4>(ref deformableTangentsFloat4);
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#endif
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if (sprite.HasVertexAttribute(Rendering.VertexAttribute.Tangent))
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Deform(rootInv, verticesFloat3, tangentsFloat4, boneWeights, boneTransformsFloat4x4, bindPosesFloat4x4, deformableVerticesFloat3, deformableTangentsFloat4);
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else
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Deform(rootInv, verticesFloat3, boneWeights, boneTransformsFloat4x4, bindPosesFloat4x4, deformableVerticesFloat3);
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#if ENABLE_UNITY_COLLECTIONS_CHECKS
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DisposeSafetyChecks(handle1);
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DisposeSafetyChecks(handle2);
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DisposeSafetyChecks(handle3);
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#endif
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}
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internal static void Deform(float4x4 rootInv, NativeSlice<float3> vertices, NativeSlice<BoneWeight> boneWeights, NativeArray<float4x4> boneTransforms, NativeSlice<float4x4> bindPoses, NativeSlice<float3> deformed)
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{
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if (boneTransforms.Length == 0)
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return;
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for (var i = 0; i < boneTransforms.Length; i++)
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{
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var bindPoseMat = bindPoses[i];
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var boneTransformMat = boneTransforms[i];
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boneTransforms[i] = math.mul(rootInv, math.mul(boneTransformMat, bindPoseMat));
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}
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for (var i = 0; i < vertices.Length; i++)
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{
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var bone0 = boneWeights[i].boneIndex0;
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var bone1 = boneWeights[i].boneIndex1;
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var bone2 = boneWeights[i].boneIndex2;
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var bone3 = boneWeights[i].boneIndex3;
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var vertex = vertices[i];
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deformed[i] =
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math.transform(boneTransforms[bone0], vertex) * boneWeights[i].weight0 +
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math.transform(boneTransforms[bone1], vertex) * boneWeights[i].weight1 +
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math.transform(boneTransforms[bone2], vertex) * boneWeights[i].weight2 +
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math.transform(boneTransforms[bone3], vertex) * boneWeights[i].weight3;
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}
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}
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internal static void Deform(float4x4 rootInv, NativeSlice<float3> vertices, NativeSlice<float4> tangents, NativeSlice<BoneWeight> boneWeights, NativeArray<float4x4> boneTransforms, NativeSlice<float4x4> bindPoses, NativeSlice<float3> deformed, NativeSlice<float4> deformedTangents)
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{
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if(boneTransforms.Length == 0)
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return;
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for (var i = 0; i < boneTransforms.Length; i++)
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{
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var bindPoseMat = bindPoses[i];
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var boneTransformMat = boneTransforms[i];
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boneTransforms[i] = math.mul(rootInv, math.mul(boneTransformMat, bindPoseMat));
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}
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for (var i = 0; i < vertices.Length; i++)
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{
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var bone0 = boneWeights[i].boneIndex0;
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var bone1 = boneWeights[i].boneIndex1;
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var bone2 = boneWeights[i].boneIndex2;
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var bone3 = boneWeights[i].boneIndex3;
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var vertex = vertices[i];
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deformed[i] =
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math.transform(boneTransforms[bone0], vertex) * boneWeights[i].weight0 +
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math.transform(boneTransforms[bone1], vertex) * boneWeights[i].weight1 +
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math.transform(boneTransforms[bone2], vertex) * boneWeights[i].weight2 +
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math.transform(boneTransforms[bone3], vertex) * boneWeights[i].weight3;
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var tangent = new float4(tangents[i].xyz, 0.0f);
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tangent =
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math.mul(boneTransforms[bone0], tangent) * boneWeights[i].weight0 +
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math.mul(boneTransforms[bone1], tangent) * boneWeights[i].weight1 +
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math.mul(boneTransforms[bone2], tangent) * boneWeights[i].weight2 +
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math.mul(boneTransforms[bone3], tangent) * boneWeights[i].weight3;
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deformedTangents[i] = new float4(math.normalize(tangent.xyz), tangents[i].w);
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}
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}
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internal unsafe static void Deform(Sprite sprite, Matrix4x4 invRoot, Transform[] boneTransformsArray, NativeArray<byte> deformVertexData)
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{
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Debug.Assert(sprite != null);
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Debug.Assert(sprite.GetVertexCount() == (deformVertexData.Length / sprite.GetVertexStreamSize()));
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var vertices = sprite.GetVertexAttribute<Vector3>(UnityEngine.Rendering.VertexAttribute.Position);
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var tangents = sprite.GetVertexAttribute<Vector4>(UnityEngine.Rendering.VertexAttribute.Tangent);
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var boneWeights = sprite.GetVertexAttribute<BoneWeight>(UnityEngine.Rendering.VertexAttribute.BlendWeight);
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var bindPoses = sprite.GetBindPoses();
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Debug.Assert(bindPoses.Length == boneTransformsArray.Length);
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Debug.Assert(boneWeights.Length == sprite.GetVertexCount());
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var boneTransforms = new NativeArray<Matrix4x4>(boneTransformsArray.Length, Allocator.Temp, NativeArrayOptions.UninitializedMemory);
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for (var i = 0; i < boneTransformsArray.Length; ++i)
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boneTransforms[i] = boneTransformsArray[i].localToWorldMatrix;
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Deform(sprite, invRoot, vertices, tangents, boneWeights, boneTransforms, bindPoses, deformVertexData);
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boneTransforms.Dispose();
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}
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#if ENABLE_UNITY_COLLECTIONS_CHECKS
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private static AtomicSafetyHandle CreateSafetyChecks<T>(ref NativeArray<T> array) where T : struct
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{
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var handle = AtomicSafetyHandle.Create();
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AtomicSafetyHandle.SetAllowSecondaryVersionWriting(handle, true);
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AtomicSafetyHandle.UseSecondaryVersion(ref handle);
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NativeArrayUnsafeUtility.SetAtomicSafetyHandle<T>(ref array, handle);
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return handle;
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}
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private static AtomicSafetyHandle CreateSafetyChecks<T>(ref NativeSlice<T> array) where T : struct
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{
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var handle = AtomicSafetyHandle.Create();
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AtomicSafetyHandle.SetAllowSecondaryVersionWriting(handle, true);
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AtomicSafetyHandle.UseSecondaryVersion(ref handle);
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NativeSliceUnsafeUtility.SetAtomicSafetyHandle<T>(ref array, handle);
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return handle;
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}
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private static void DisposeSafetyChecks(AtomicSafetyHandle handle)
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{
|
||
|
|
AtomicSafetyHandle.Release(handle);
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
internal static void Bake(this SpriteSkin spriteSkin, NativeArray<byte> deformVertexData)
|
||
|
|
{
|
||
|
|
if (!spriteSkin.isValid)
|
||
|
|
throw new Exception("Bake error: invalid SpriteSkin");
|
||
|
|
|
||
|
|
var sprite = spriteSkin.spriteRenderer.sprite;
|
||
|
|
var boneTransformsArray = spriteSkin.boneTransforms;
|
||
|
|
Deform(sprite, Matrix4x4.identity, boneTransformsArray, deformVertexData);
|
||
|
|
}
|
||
|
|
|
||
|
|
internal unsafe static void CalculateBounds(this SpriteSkin spriteSkin)
|
||
|
|
{
|
||
|
|
Debug.Assert(spriteSkin.isValid);
|
||
|
|
var sprite = spriteSkin.sprite;
|
||
|
|
|
||
|
|
|
||
|
|
var deformVertexData = new NativeArray<byte>(sprite.GetVertexStreamSize() * sprite.GetVertexCount(), Allocator.Temp, NativeArrayOptions.UninitializedMemory);
|
||
|
|
void* dataPtr = NativeArrayUnsafeUtility.GetUnsafePtr(deformVertexData);
|
||
|
|
var deformedPosSlice = NativeSliceUnsafeUtility.ConvertExistingDataToNativeSlice<Vector3>(dataPtr, sprite.GetVertexStreamSize(), sprite.GetVertexCount());
|
||
|
|
#if ENABLE_UNITY_COLLECTIONS_CHECKS
|
||
|
|
NativeSliceUnsafeUtility.SetAtomicSafetyHandle(ref deformedPosSlice, NativeArrayUnsafeUtility.GetAtomicSafetyHandle(deformVertexData));
|
||
|
|
#endif
|
||
|
|
|
||
|
|
spriteSkin.Bake(deformVertexData);
|
||
|
|
UpdateBounds(spriteSkin, deformVertexData);
|
||
|
|
deformVertexData.Dispose();
|
||
|
|
}
|
||
|
|
|
||
|
|
internal static Bounds CalculateSpriteSkinBounds(NativeSlice<float3> deformablePositions)
|
||
|
|
{
|
||
|
|
float3 min = deformablePositions[0];
|
||
|
|
float3 max = deformablePositions[0];
|
||
|
|
|
||
|
|
for (int j = 1; j < deformablePositions.Length; ++j)
|
||
|
|
{
|
||
|
|
min = math.min(min, deformablePositions[j]);
|
||
|
|
max = math.max(max, deformablePositions[j]);
|
||
|
|
}
|
||
|
|
|
||
|
|
float3 ext = (max - min) * 0.5F;
|
||
|
|
float3 ctr = min + ext;
|
||
|
|
Bounds bounds = new Bounds();
|
||
|
|
bounds.center = ctr;
|
||
|
|
bounds.extents = ext;
|
||
|
|
return bounds;
|
||
|
|
}
|
||
|
|
|
||
|
|
internal static unsafe void UpdateBounds(this SpriteSkin spriteSkin, NativeArray<byte> deformedVertices)
|
||
|
|
{
|
||
|
|
byte* deformedPosOffset = (byte*)NativeArrayUnsafeUtility.GetUnsafePtr(deformedVertices);
|
||
|
|
var spriteVertexCount = spriteSkin.sprite.GetVertexCount();
|
||
|
|
var spriteVertexStreamSize = spriteSkin.sprite.GetVertexStreamSize();
|
||
|
|
NativeSlice<float3> deformedPositions = NativeSliceUnsafeUtility.ConvertExistingDataToNativeSlice<float3>(deformedPosOffset, spriteVertexStreamSize, spriteVertexCount);
|
||
|
|
|
||
|
|
#if ENABLE_UNITY_COLLECTIONS_CHECKS
|
||
|
|
var handle = CreateSafetyChecks<float3>(ref deformedPositions);
|
||
|
|
#endif
|
||
|
|
spriteSkin.bounds = CalculateSpriteSkinBounds(deformedPositions);
|
||
|
|
|
||
|
|
#if ENABLE_UNITY_COLLECTIONS_CHECKS
|
||
|
|
DisposeSafetyChecks(handle);
|
||
|
|
#endif
|
||
|
|
InternalEngineBridge.SetLocalAABB(spriteSkin.spriteRenderer, spriteSkin.bounds);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
[BurstCompile]
|
||
|
|
internal static class BurstedSpriteSkinUtilities
|
||
|
|
{
|
||
|
|
[BurstCompile]
|
||
|
|
internal static bool ValidateBoneWeights(in NativeSlice<BoneWeight> boneWeights, int bindPoseCount)
|
||
|
|
{
|
||
|
|
var boneWeightCount = boneWeights.Length;
|
||
|
|
for (var i = 0; i < boneWeightCount; ++i)
|
||
|
|
{
|
||
|
|
var boneWeight = boneWeights[i];
|
||
|
|
var idx0 = boneWeight.boneIndex0;
|
||
|
|
var idx1 = boneWeight.boneIndex1;
|
||
|
|
var idx2 = boneWeight.boneIndex2;
|
||
|
|
var idx3 = boneWeight.boneIndex3;
|
||
|
|
|
||
|
|
if ((idx0 < 0 || idx0 >= bindPoseCount) ||
|
||
|
|
(idx1 < 0 || idx1 >= bindPoseCount) ||
|
||
|
|
(idx2 < 0 || idx2 >= bindPoseCount) ||
|
||
|
|
(idx3 < 0 || idx3 >= bindPoseCount))
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|