`getMatrix` become too slow when the scene contains deeper node hierarchies. about vulkan-gltf-pbr HOT 5 CLOSED

I added a very basic "caching" algorithm to limit the number of matrix calculations per animation step. While very simple, this greatly improved performance on my side, esp. when running debug with MSVC.

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That's true. It's especially evident in debug mode, where some scenes run extremely slow even on my 3rd Gen Ryzen CPU. I'll take a look at matrix caching, and maybe try to add some parallelism to improve performance.

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I'll take a look at matrix caching

Thanks! For example, adding global_transform_matrix to Node, then compute it from the root node should work well.

  void updateGlobalTransformMatrix(glm::mat4 parentMatrix) {
    global_transform_matrix = parentMatrix * localMatrix();
    for (auto &child : children) {
      child->updateGlobalTransformMatrix(global_transform_matrix);
    }
  }

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thankyou you are good

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Thanks!

a glTF model containing roughly 300 nodes.

I don't have this glTF model to reproduce the issue anymore, but I think the "caching" fix 2ac4de5 should work well, so closing the issue.

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