animmesh.cpp

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#include "animmesh.h"
#include "packedmesh.h"
 
#include <Tempest/Log>
 
static size_t countBones(const Resources::VertexA* v, size_t n) {
  if(n==0)
    return 0;
  uint8_t ret = 0;
  for(size_t i=0; i<n; ++i) {
    ret = std::max(ret, v[i].boneId[0]);
    ret = std::max(ret, v[i].boneId[1]);
    ret = std::max(ret, v[i].boneId[2]);
    ret = std::max(ret, v[i].boneId[3]);
    }
  return ret+1;
  }
 
AnimMesh::AnimMesh(const PackedMesh& mesh)
  : bonesCount(countBones(mesh.verticesA.data(),mesh.verticesA.size())) {
  vbo  = Resources::vbo (mesh.verticesA.data(),mesh.verticesA.size());
  ibo  = Resources::ibo (mesh.indices.data(),  mesh.indices.size());
  ibo8 = Resources::ssbo(mesh.indices8.data(), mesh.indices8.size());
 
  sub.resize(mesh.subMeshes.size());
  for(size_t i=0;i<mesh.subMeshes.size();++i) {
    sub[i].texName   = mesh.subMeshes[i].material.texture;
    sub[i].material  = Resources::loadMaterial(mesh.subMeshes[i].material,true);
    sub[i].iboOffset = mesh.subMeshes[i].iboOffset;
    sub[i].iboSize   = mesh.subMeshes[i].iboLength;
    }
 
  // compact similar sub-meshes. not a big deal, but helps in graphics debugging
  size_t cnt = 1;
  for(size_t i=1;i<mesh.subMeshes.size();++i) {
    auto& a = sub[cnt-1];
    auto& b = sub[i];
    if(a.iboOffset+a.iboSize==b.iboOffset &&
       a.texName==b.texName &&
       a.material==b.material) {
      a.iboSize += b.iboSize;
      } else {
      sub[cnt] = b;
      ++cnt;
      }
    }
  sub.resize(cnt);
 
  bbox.assign(mesh.bbox());
  }