C Specification
The xrTriangleMeshGetVertexBufferFB function is defined as:
// Provided by XR_FB_triangle_mesh
XrResult xrTriangleMeshGetVertexBufferFB(
XrTriangleMeshFB mesh,
XrVector3f** outVertexBuffer);Parameters
Description
Retrieves a pointer to the vertex buffer.
The vertex buffer is structured as an array of XrVector3f.
The size of the buffer is
XrTriangleMeshCreateInfoFB::vertexCount elements.
The buffer location is guaranteed to remain constant over the lifecycle of
the mesh object.
A mesh must be mutable and in a specific state for the application to modify it through the retrieved vertex buffer.
-
A mutable triangle mesh must be in state https://registry.khronos.org/OpenXR/specs/1.0/html/xrspec.html#fb_triangle_mesh_state_defining_topology, https://registry.khronos.org/OpenXR/specs/1.0/html/xrspec.html#fb_triangle_mesh_state_updating_mesh, or https://registry.khronos.org/OpenXR/specs/1.0/html/xrspec.html#fb_triangle_mesh_state_updating_vertices to modify the contents of the vertex buffer retrieved by this function.
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A mutable triangle mesh must be in state https://registry.khronos.org/OpenXR/specs/1.0/html/xrspec.html#fb_triangle_mesh_state_defining_topology or https://registry.khronos.org/OpenXR/specs/1.0/html/xrspec.html#fb_triangle_mesh_state_updating_mesh to modify the count of elements in the vertex buffer retrieved by this function. The new count is passed as a parameter to xrTriangleMeshEndUpdateFB.
Document Notes
For more information, see the OpenXR Specification
This page is extracted from the OpenXR Specification. Fixes and changes should be made to the Specification, not directly.
Copyright
Copyright 2014-2024, The Khronos Group Inc.
This work is licensed under a Creative Commons Attribution 4.0 International License.