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[LYN-3252] EMotion FX: Morph target buffer only found on first Atom mesh (#280)

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We were using the first Atom mesh to check for morph target buffers by getting access to the buffer asset from the buffer asset view. This won't work for models with multiple meshes while the first mesh is not morphed.
This commit is contained in:
Benjamin Jillich
2021-04-23 19:11:43 +02:00
committed by GitHub
parent 6583178a4c
commit 9bbcc7ec68
1 changed files with 11 additions and 6 deletions
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Gems/EMotionFX/Code/EMotionFX/Source/Actor.cpp
+11 -6
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@@ -3012,17 +3012,22 @@ namespace EMotionFX
jointInfo.mStack->InsertDeformer(/*deformerPosition=*/0, morphTargetDeformer);
}
// The lod has shared buffers that combine the data from each submesh. These buffers can be accessed through the first submesh in their entirety
const AZ::RPI::ModelLodAsset::Mesh& sourceMesh = sourceMeshes[0];
// The lod has shared buffers that combine the data from each submesh. In case any of the submeshes has a
// morph target buffer view we can access the entire morph target buffer via the buffer asset.
AZStd::array_view<uint8_t> morphTargetDeltaView;
if (const auto* bufferAssetView = sourceMesh.GetSemanticBufferAssetView(AZ::Name("MORPHTARGET_VERTEXDELTAS")))
for (const AZ::RPI::ModelLodAsset::Mesh& sourceMesh : sourceMeshes)
{
if (const auto* bufferAsset = bufferAssetView->GetBufferAsset().Get())
if (const auto* bufferAssetView = sourceMesh.GetSemanticBufferAssetView(AZ::Name("MORPHTARGET_VERTEXDELTAS")))
{
// The buffer of the view is the buffer of the whole LOD, not just the source mesh.
morphTargetDeltaView = bufferAsset->GetBuffer();
if (const auto* bufferAsset = bufferAssetView->GetBufferAsset().Get())
{
// The buffer of the view is the buffer of the whole LOD, not just the source mesh.
morphTargetDeltaView = bufferAsset->GetBuffer();
break;
}
}
}
AZ_Assert(morphTargetDeltaView.data(), "Unable to find MORPHTARGET_VERTEXDELTAS buffer");
const AZ::RPI::PackedCompressedMorphTargetDelta* vertexDeltas = reinterpret_cast<const AZ::RPI::PackedCompressedMorphTargetDelta*>(morphTargetDeltaView.data());