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feat: load non-rigid xmodels from gltf

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This commit is contained in:
Jan Laupetin
2025-07-13 15:20:00 +01:00
parent babecd2e1f
commit d240655160
1 changed files with 99 additions and 13 deletions
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112
src/ObjLoading/XModel/LoaderXModel.cpp.template
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@@ -429,8 +429,7 @@ namespace
const auto rigidBoneIndexForTri = GetRigidBoneIndicesForTris(vertexIndices, surface, common);
std::vector<size_t> triSortList(surface.triCount);
std::iota(triSortList.begin(), triSortList.end(), 0);
std::ranges::iota(triSortList, 0);
std::ranges::sort(triSortList,
[&rigidBoneIndexForTri](const size_t triIndex0, const size_t triIndex1)
{
@@ -509,9 +508,96 @@ namespace
}
}
void CreateVertsBlendData(XSurface& surface, const std::vector<size_t>& vertexIndices, const XModelCommon& common)
static uint16_t BoneWeight16(const float value)
{
// TODO
return static_cast<uint16_t>(value * static_cast<float>(std::numeric_limits<uint16_t>::max()));
}
void CreateVertsBlendData(XSurface& surface, const std::vector<size_t>& vertexIndices, const XModelCommon& common) const
{
std::vector<uint16_t> vertsBlendData;
const auto vertexCount = vertexIndices.size();
auto vertexIndex = 0uz;
// Reserve the minimum amount of data we know will follow
vertsBlendData.reserve(vertexCount);
while (vertexIndex < vertexCount)
{
const auto& boneWeights = common.m_vertex_bone_weights[vertexIndices[vertexIndex]];
if (boneWeights.weightCount > 1)
break;
const auto& weight0 = common.m_bone_weight_data.weights[boneWeights.weightOffset];
vertsBlendData.emplace_back(static_cast<uint16_t>(weight0.boneIndex * sizeof(DObjSkelMat)));
vertexIndex++;
surface.vertInfo.vertCount[0]++;
}
vertsBlendData.reserve(vertsBlendData.size() + (vertexCount - vertexIndex) * 3u);
while (vertexIndex < vertexCount)
{
const auto& boneWeights = common.m_vertex_bone_weights[vertexIndices[vertexIndex]];
if (boneWeights.weightCount > 2)
break;
const auto& weight0 = common.m_bone_weight_data.weights[boneWeights.weightOffset + 0];
const auto& weight1 = common.m_bone_weight_data.weights[boneWeights.weightOffset + 1];
vertsBlendData.emplace_back(static_cast<uint16_t>(weight0.boneIndex * sizeof(DObjSkelMat)));
vertsBlendData.emplace_back(static_cast<uint16_t>(weight1.boneIndex * sizeof(DObjSkelMat)));
vertsBlendData.emplace_back(BoneWeight16(weight1.weight));
vertexIndex++;
surface.vertInfo.vertCount[1]++;
}
vertsBlendData.reserve(vertsBlendData.size() + (vertexCount - vertexIndex) * 5u);
while (vertexIndex < vertexCount)
{
const auto& boneWeights = common.m_vertex_bone_weights[vertexIndices[vertexIndex]];
if (boneWeights.weightCount > 3)
break;
const auto& weight0 = common.m_bone_weight_data.weights[boneWeights.weightOffset + 0];
const auto& weight1 = common.m_bone_weight_data.weights[boneWeights.weightOffset + 1];
const auto& weight2 = common.m_bone_weight_data.weights[boneWeights.weightOffset + 2];
vertsBlendData.emplace_back(static_cast<uint16_t>(weight0.boneIndex * sizeof(DObjSkelMat)));
vertsBlendData.emplace_back(static_cast<uint16_t>(weight1.boneIndex * sizeof(DObjSkelMat)));
vertsBlendData.emplace_back(BoneWeight16(weight1.weight));
vertsBlendData.emplace_back(static_cast<uint16_t>(weight2.boneIndex * sizeof(DObjSkelMat)));
vertsBlendData.emplace_back(BoneWeight16(weight2.weight));
vertexIndex++;
surface.vertInfo.vertCount[2]++;
}
vertsBlendData.reserve(vertsBlendData.size() + (vertexCount - vertexIndex) * 7u);
while (vertexIndex < vertexCount)
{
const auto& boneWeights = common.m_vertex_bone_weights[vertexIndices[vertexIndex]];
const auto& weight0 = common.m_bone_weight_data.weights[boneWeights.weightOffset + 0];
const auto& weight1 = common.m_bone_weight_data.weights[boneWeights.weightOffset + 1];
const auto& weight2 = common.m_bone_weight_data.weights[boneWeights.weightOffset + 2];
const auto& weight3 = common.m_bone_weight_data.weights[boneWeights.weightOffset + 3];
vertsBlendData.emplace_back(static_cast<uint16_t>(weight0.boneIndex * sizeof(DObjSkelMat)));
vertsBlendData.emplace_back(static_cast<uint16_t>(weight1.boneIndex * sizeof(DObjSkelMat)));
vertsBlendData.emplace_back(BoneWeight16(weight1.weight));
vertsBlendData.emplace_back(static_cast<uint16_t>(weight2.boneIndex * sizeof(DObjSkelMat)));
vertsBlendData.emplace_back(BoneWeight16(weight2.weight));
vertsBlendData.emplace_back(static_cast<uint16_t>(weight3.boneIndex * sizeof(DObjSkelMat)));
vertsBlendData.emplace_back(BoneWeight16(weight3.weight));
vertexIndex++;
surface.vertInfo.vertCount[3]++;
}
surface.vertInfo.vertsBlend = m_memory.Alloc<uint16_t>(vertsBlendData.size());
std::memcpy(surface.vertInfo.vertsBlend, vertsBlendData.data(), sizeof(uint16_t) * vertsBlendData.size());
}
static void ReorderVerticesByWeightCount(std::vector<size_t>& vertexIndices, const XSurface& surface, const XModelCommon& common)
@@ -521,8 +607,7 @@ namespace
const auto vertexCount = vertexIndices.size();
std::vector<size_t> reorderLookup(vertexCount);
std::iota(reorderLookup.begin(), reorderLookup.end(), 0);
std::ranges::iota(reorderLookup, 0);
std::ranges::sort(reorderLookup,
[&common, &vertexIndices](const size_t& i0, const size_t& i1)
{
@@ -629,15 +714,16 @@ namespace
if (!common.m_bone_weight_data.weights.empty())
{
// Since bone weights are sorted by weight count, the last must have the highest weight count
const auto hasVertsBlend =
common.m_vertex_bone_weights[xmodelToCommonVertexIndexLookup[xmodelToCommonVertexIndexLookup.size() - 1]].weightCount > 1;
if (!hasVertsBlend)
const auto maxWeightCount =
common.m_vertex_bone_weights[xmodelToCommonVertexIndexLookup[xmodelToCommonVertexIndexLookup.size() - 1]].weightCount;
if (maxWeightCount == 0) // XModel is rigid
CreateVertListData(surface, xmodelToCommonVertexIndexLookup, common);
else if (maxWeightCount < std::extent_v<decltype(XSurfaceVertexInfo::vertCount)> + 1)
CreateVertsBlendData(surface, xmodelToCommonVertexIndexLookup, common);
else
{
CreateVertsBlendData(surface, xmodelToCommonVertexIndexLookup, common);
std::cerr << "Only rigid models are supported at the moment\n";
std::cerr << std::format("Models must not have vertices that are influenced by more than {} bones\n",
std::extent_v<decltype(XSurfaceVertexInfo::vertCount)> + 1);
return false;
}
}
@@ -936,7 +1022,7 @@ namespace
ZoneScriptStrings& m_script_strings;
PartClassificationState m_part_classification_state;
};
} // namespace GAME
} // namespace
namespace GAME
{