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Add api to draw Skinned Model from code with Animated Model pose

Browse Source 
https://forum.flaxengine.com/t/how-to-render-outline-for-an-animated-model/2598
This commit is contained in:
Wojciech Figat
2026-06-16 11:19:34 +02:00
parent ef35f01c17
commit 888dfbe014
10 changed files with 154 additions and 10 deletions
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Source/Engine/Graphics/Models/SkinnedMesh.cpp
+31 -1
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@@ -309,6 +309,37 @@ bool SkinnedMesh::UpdateMesh(uint32 vertexCount, uint32 triangleCount, const Flo
return ::UpdateMesh(this, vertexCount, triangleCount, PixelFormat::R16_UInt, vertices, triangles, blendIndices, blendWeights, normals, tangents, uvs, colors);
}
void SkinnedMesh::Draw(const RenderContext& renderContext, const SkinnedMeshBones& pose, MaterialBase* material, const Matrix& world, StaticFlags flags, bool receiveDecals, DrawPass drawModes, float perInstanceRandom, int8 sortOrder, uint8 stencilValue) const
{
if (!material || !material->IsSurface() || !IsInitialized() || !pose)
return;
drawModes &= material->GetDrawModes();
if (drawModes == DrawPass::None)
return;
// Setup draw call
DrawCall drawCall;
drawCall.Geometry.IndexBuffer = _indexBuffer;
drawCall.Geometry.VertexBuffers[0] = _vertexBuffers[0];
drawCall.Draw.IndicesCount = _triangles * 3;
drawCall.InstanceCount = 1;
drawCall.Material = material;
drawCall.World = world;
drawCall.ObjectPosition = drawCall.World.GetTranslation();
drawCall.ObjectRadius = (float)_sphere.Radius * drawCall.World.GetScaleVector().GetAbsolute().MaxValue();
drawCall.Surface.GeometrySize = _box.GetSize();
drawCall.Surface.PrevWorld = world;
drawCall.Surface.Skinning = pose.PrevBonesOffset != 0 ? DrawCall::SkinningMode::WithPrevBones : DrawCall::SkinningMode::Active;
drawCall.Surface.SkinningBones = pose.BoneMatrices;
drawCall.Surface.SkinningBonesOffset = pose.BoneOffset;
drawCall.Surface.PrevBonesOffset = pose.PrevBonesOffset;
drawCall.PerInstanceRandom = perInstanceRandom;
drawCall.StencilValue = stencilValue;
// Push draw call to the render list
renderContext.List->AddDrawCall(renderContext, drawModes, flags, drawCall, receiveDecals, sortOrder);
}
void SkinnedMesh::Draw(const RenderContext& renderContext, const DrawInfo& info, float lodDitherFactor) const
{
const auto& entry = info.Buffer->At(_materialSlotIndex);
@@ -340,7 +371,6 @@ void SkinnedMesh::Draw(const RenderContext& renderContext, const DrawInfo& info,
drawCall.Geometry.VertexBuffers[0] = _vertexBuffers[0];
if (info.Deformation)
info.Deformation->RunDeformers(this, MeshBufferType::Vertex0, drawCall.Geometry.VertexBuffers[0]);
drawCall.Draw.StartIndex = 0;
drawCall.Draw.IndicesCount = _triangles * 3;
drawCall.InstanceCount = 1;
drawCall.Material = material;