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2470578538
"Specifies full topology" was set to false in both of our "converter" implementations, meaning none of this code was run in practice. It might make sense to provide more topology information to at least avoid edge lookups in OpenSubdiv, but currently a reduction in complexity is more helpful. Pull Request: https://projects.blender.org/blender/blender/pulls/165094
57 lines
1.9 KiB
C++
57 lines
1.9 KiB
C++
/* SPDX-FileCopyrightText: 2015 Blender Foundation
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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#pragma once
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#include <span>
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#include <utility>
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#include "opensubdiv_capi_type.hh"
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/**
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* Sharpness value which makes an edge or a vertex infinitely sharp. Mirrors
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* `OpenSubdiv::Sdc::Crease::SHARPNESS_INFINITE`, which can not be included here.
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*/
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constexpr float OPENSUBDIV_SHARPNESS_INFINITE = 10.0f;
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struct OpenSubdiv_Converter {
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int verts_num;
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/**
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* The topology of the mesh to be subdivided. See #Mesh::edges(), #Mesh::face_offsets(), and
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* #Mesh::corner_verts() documentation for the details. Other topology information is currently
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* encoded with callbacks rather than arrays directly.
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*/
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std::span<const std::pair<int, int>> edges;
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std::span<const int> face_offsets;
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std::span<const int> corner_verts;
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/**
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* Sharpness (aka crease) of every edge and every vertex, in the
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* `[0, #OPENSUBDIV_SHARPNESS_INFINITE]` range. Vertex sharpness includes the infinite sharpness
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* used to make vertices adjacent to a loose edge sharp.
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*
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* Either aligned with #edges and with the vertices respectively, or empty.
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*/
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std::span<const float> edge_sharpness;
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std::span<const float> vert_sharpness;
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struct UVLayer {
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/** Number of distinct UV "vertices" (face-varying values) in the layer. */
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int uvs_num;
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/**
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* The index of every face corner's UV vertex in `[0, uvs_num)`. Corners that use the
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* same mesh vertex and have connected UVs share an index. Aligned with #corner_verts.
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*/
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std::span<const int> corner_uv_indices;
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};
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std::span<const UVLayer> uv_layers;
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OpenSubdiv_SchemeType scheme_type;
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OpenSubdiv_VtxBoundaryInterpolation vtx_boundary_interpolation;
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OpenSubdiv_FVarLinearInterpolation fvar_linear_interpolation;
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void (*freeUserData)(const OpenSubdiv_Converter *converter);
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void *user_data;
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};
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