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proposal for KHR_mesh_opacity_micromap - #2603

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pixeljetstream:KHR_mesh_opacity_micromap
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pixeljetstream:KHR_mesh_opacity_micromap

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@pixeljetstream

@pixeljetstream pixeljetstream commented Jun 9, 2026 •

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Hello,

with the standardization of Vulkan VK_KHR_opacity_micromap as well as
Microsoft DirectX Raytracing — opacity micromaps we are proposing this extension to allow providing micromap data as part of a glTF.

Because the data is typically mesh-specific (micromaps operate in barycentric space) we added a mesh prefix to the extension name, also so that it doesn't clash with the Vulkan extension on searches.

We are looking forward to your feedback.

Co-authored-by: Nia Bickford <nbickford@nvidia.com>
Co-authored-by: Arseny Kapoulkine <arseny.kapoulkine@gmail.com>
Co-authored-by: Pyarelal Knowles <pknowles@nvidia.com>
@pixeljetstream
pixeljetstream deleted the KHR_mesh_opacity_micromap branch July 7, 2026 13:24
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superceded by #2623

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