/// <summary>
/// 通过 id 获取 GPURendererRes
/// </summary>
/// <param name="id">SkinnedMeshRenderer.sharedMesh.GetInstanceID()</param>
/// <returns></returns>
public GPURendererRes GetDataByID(int id)
{
GPURendererRes data = null;
_dic.TryGetValue(id, out data);
return(data);
}
public void AddMeshRenderer(GPURendererRes res)
{
GPUSkinnedMeshRenderer renderer = new GPUSkinnedMeshRenderer();
renderer.Init(this, res);
_GPUMeshRenderers.Add(renderer);
}
public void Init(BakedGPUAnimation animation, GPURendererRes res)
{
_bakedAnimation = animation;
_rendererRes = res;
_skinningData = animation.skinningData;
_pixelPerFrame = _skinningData.boneInfos.Length * 3;
GameObject go = animation.gameObject;
Transform t = go.transform;
t.localPosition = Vector3.zero;
t.localRotation = Quaternion.identity;
_meshRenderer = go.GetOrAddComponent <MeshRenderer>();
_meshFilter = go.GetOrAddComponent <MeshFilter>();
_meshFilter.sharedMesh = res.mesh;
_rendererParamDirty = true;
_runningBakedAnimData = new RunningBakedAnimData();
_meshRenderer.additionalVertexStreams = _rendererRes.additionalMesh;
_meshRenderer.sharedMaterial = _rendererRes.bakedGPUMaterial;
_AnimParamId = Shader.PropertyToID("_AnimParam");
_mbp = new MaterialPropertyBlock();
_meshRenderer.SetPropertyBlock(_mbp);
}
public void AddMeshRenderer(GPURendererRes res)
{
BakedGPUSkinnedMeshRenderer bsmr = new BakedGPUSkinnedMeshRenderer();
bsmr.Init(this, res);
_bakedRenderers.Add(bsmr);
}
public void Add(int id, GPURendererRes data)
{
if (_dic.ContainsKey(id))
{
Debug.LogErrorFormat("AdditionalMeshCache already contains key {0}", id);
return;
}
_dic.Add(id, data);
}
private void CreateBakedTexture2D(GPURendererRes res)
{
Texture2D tex = new Texture2D(res.skinningData.width, res.skinningData.height, TextureFormat.RGBAHalf, false, true);
tex.name = string.Format("BakedAnimTexture_{0}", res.skinningData.name);
tex.filterMode = FilterMode.Point;
tex.LoadRawTextureData(res.skinningData.bakedBoneDatas);
tex.Apply(false, true);
tex.hideFlags = HideFlags.DontSaveInBuild | HideFlags.DontSaveInEditor;
res.bakedAnimTex = tex;
}
/// <summary>
/// 创建 GPUSkin 所需的 Mesh, 强制每个顶点只有两根骨骼
///
/// 由于 Unity 没有开放 BLENDINDICES 和 BLENDWEIGHT 语义，我们又不想修改资源内的原始mesh，只能自己创建一个 mesh 来存储,
/// 缺点就是每个顶点多出了 4 * 4 个字节的体积, 假设每个模型 4000 个顶点，共缓存了 30 套模型，那么将多出
/// 16 * 4000 * 30 = 1920000 = 1.83MB, 可以接受
/// </summary>
/// <param name="smr"></param>
/// <returns></returns>
private void CreateSkinMesh(SkinnedMeshRenderer smr, GPURendererRes res)
{
int[] boneIdxMap = GPUAnimUtils.CalcBoneIdxMap(smr, res.skinningData);
Mesh smrMesh = smr.sharedMesh;
Mesh addMesh = new Mesh();
BoneWeight[] oriBoneWeights = smrMesh.boneWeights;
int weightCount = oriBoneWeights.Length;
List <Vector4> boneIndices = new List <Vector4>(weightCount);
List <Vector4> boneWeights = new List <Vector4>(weightCount);
for (int i = 0; i < weightCount; i++)
{
BoneWeight weight = oriBoneWeights[i];
Vector4 indices = new Vector4();
indices.x = boneIdxMap[weight.boneIndex0]; // 骨骼索引重新映射下
indices.y = boneIdxMap[weight.boneIndex1];
indices.z = boneIdxMap[weight.boneIndex2];
indices.w = boneIdxMap[weight.boneIndex3];
boneIndices.Add(indices);
Vector4 weights = new Vector4();
weights.x = weight.weight0;
weights.y = weight.weight1;
weights.z = weight.weight2;
weights.w = weight.weight3;
boneWeights.Add(weights);
//float sum = weight.weight0 + weight.weight1;
//blendWeights[i].x = weight.weight0 / sum;
//blendWeights[i].y = weight.weight1 /sum;
}
addMesh.vertices = smrMesh.vertices; // 由于 Unity 有判断要求其它 channel 长度必须与 vertices 相等，这个内存只能浪费掉了
addMesh.SetUVs(2, boneIndices);
addMesh.SetUVs(3, boneWeights);
//addMesh.uv3 = blendIndices;
//addMesh.uv4 = blendWeights;
addMesh.UploadMeshData(true); // warning!, DeviceLost 时可能无法恢复数据
res.additionalMesh = addMesh;
}
/// <summary>
/// 获取或者创建 Res
/// </summary>
/// <param name="smr"></param>
/// <param name="skinningData"></param>
/// <returns></returns>
public GPURendererRes GetOrCreateRes(SkinnedMeshRenderer smr, SkinningData skinningData)
{
int id = smr.sharedMesh.GetInstanceID();
GPURendererRes ret = null;
if (_dic.TryGetValue(id, out ret))
{
return(ret);
}
ret = new GPURendererRes();
ret.skinningData = skinningData;
ret.mesh = smr.sharedMesh;
CreateSkinMesh(smr, ret);
CreateBakedTexture2D(ret);
CreateMaterial(smr, ret);
_dic.Add(id, ret);
return(ret);
}
private void CreateMaterial(SkinnedMeshRenderer smr, GPURendererRes res)
{
Texture2D animTex = res.bakedAnimTex;
Material srcMat = smr.sharedMaterial;
Material bakedGPUMaterial = new Material(Shader.Find("GPUSkinning/BakedGPUSkinning"));
bakedGPUMaterial.SetTexture("_MainTex", srcMat.mainTexture);
bakedGPUMaterial.SetTexture("_BakedAnimTex", animTex);
bakedGPUMaterial.SetVector("_BakedAnimTexWH", new Vector4(res.skinningData.width, res.skinningData.height, 0, 0));
bakedGPUMaterial.enableInstancing = true;
Material GPUMaterial = new Material(Shader.Find("GPUSkinning/GPUSkinning"));
GPUMaterial.SetTexture("_MainTex", srcMat.mainTexture);
GPUMaterial.enableInstancing = true;
res.bakedGPUMaterial = bakedGPUMaterial;
res.GPUMaterial = GPUMaterial;
}
private Vector4[] _matrixPalette; // _boneIdxMap.Length * 3
public void Init(GPUAnimation gpuAnim, GPURendererRes res)
{
_gpuAnimation = gpuAnim;
_res = res;
_matrixPalette = new Vector4[_boneIdxMap.Length * 3];
}
/// <summary>
/// 将除 mesh 节点，挂点(将其提到最顶级)，rootMotion 之外的所有节点移除
/// </summary>
private void ProcessNode()
{
_rootMotionNode = transform.Find(Consts.ROOT_MOTION_NAME);
List <Transform> allChildren = new List <Transform>();
GPUAnimUtils.GetAllChildren(transform, allChildren);
List <SkinnedMeshRenderer> smrs = new List <SkinnedMeshRenderer>();
foreach (var node in allChildren)
{
if (node == transform)
{
continue;
}
SkinnedMeshRenderer smr = node.GetComponent <SkinnedMeshRenderer>();
if (smr != null)
{
/*
* 调试代码，发布时把 if 去掉
* (挂载的这个武器并不能使用模型的 Animation, 并且其 Bone 数量也为0，因此应该是用 MeshRenderer 而不是 SkinnedMeshRenderer)
*/
if (node.name != "right_weapon")
{
// 某些 smr 不位于模型直接子节点，将其提升以避免被移除掉(显示不会受到影响)
if (node.parent != transform)
{
node.parent = transform;
}
smrs.Add(smr);
continue;
}
}
if (node == _rootMotionNode)
{
continue;
}
bool isJoint = false;
//foreach (var name in skinningData.jointNames)
//{
// if (name == node.name)
// {
// node.parent = transform;
// isJoint = true;
// break;
// }
//}
if (!isJoint)
{
// 不要使用 DestroyImmediate, 否则循环中的其它元素可能无法访问并且下面的 bsmr.Init 无法获取到 bones
Destroy(node.gameObject);
}
}
// 原始的 SkinnedMeshRenderer 都创建对应的两种 Renderer
foreach (var smr in smrs)
{
GPURendererRes res = GPUSkinRuntimeResMgr.Instance.GetOrCreateRes(smr, skinningData);
_bakedGPUAnimation.AddMeshRenderer(res);
_GPUAnimation.AddMeshRenderer(res);
DestroyImmediate(smr);
}
Animation oriAnimation = gameObject.GetComponent <Animation>();
if (oriAnimation != null)
{
DestroyImmediate(oriAnimation);
}
// 初始化绑点
//_jointTrans = new Transform[skinningData.jointNames.Length];
//for (int i = 0; i < _jointTrans.Length; i++)
//{
// Transform t = transform.Find(skinningData.jointNames[i]);
// if (t == null)
// {
// Debug.LogErrorFormat("can not find join {0}", skinningData.jointNames[i]);
// return;
// }
// _jointTrans[i] = t;
//}
_bakedGPUAnimation.SetJointTransforms(_jointTrans);
_GPUAnimation.SetJointTransforms(_jointTrans);
}