b5542c1ea4
Skip updating normals & tessellation for contiguous geometry regions for operations such as translate & uniform scale. This means when all geometry is selected, no updates are needed as the relative locations of vertices aren't being modified. Performance: As this is skipping a multi-threaded operation, larger improvements are noticeable on systems with fewer cores. - ~1.15x to ~1.3x overall gain for 32 cores. - ~1.7x to ~2.2x overall gain for 1 core (limited using `-t 1` argument). Details: - Rotate & non-uniform scale only skip tessellation. - Proportional editing and axis-mirror have special handling ensure geometry is properly grouped before considering a face part of a single group that can be skipped. - Loose vertices always need their normals to be recalculated since they're calculated based on the location. - Non-affine transform operations such as shrink-fatten & bend, don't take advantage of this optimization. - Snap projection also disables the optimization.
74 lines
2.5 KiB
C
74 lines
2.5 KiB
C
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#pragma once
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/** \file
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* \ingroup bmesh
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*/
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#include "BLI_compiler_attrs.h"
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/**
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* Parameters used to determine which kinds of data needs to be generated.
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*/
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typedef struct BMPartialUpdate_Params {
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bool do_normals;
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bool do_tessellate;
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} BMPartialUpdate_Params;
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/**
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* Cached data to speed up partial updates.
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*
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* Hints:
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*
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* - Avoid creating this data for single updates,
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* it should be created and reused across multiple updates to gain a significant benefit
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* (while transforming geometry for example).
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*
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* - Partial normal updates use face & loop indices,
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* setting them to dirty values between updates will slow down normal recalculation.
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*/
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typedef struct BMPartialUpdate {
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BMVert **verts;
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BMFace **faces;
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int verts_len, verts_len_alloc;
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int faces_len, faces_len_alloc;
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/** Store the parameters used in creation so invalid use can be asserted. */
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BMPartialUpdate_Params params;
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} BMPartialUpdate;
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BMPartialUpdate *BM_mesh_partial_create_from_verts(BMesh *bm,
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const BMPartialUpdate_Params *params,
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const unsigned int *verts_mask,
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const int verts_mask_count)
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ATTR_NONNULL(1, 2, 3) ATTR_WARN_UNUSED_RESULT;
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BMPartialUpdate *BM_mesh_partial_create_from_verts_group_single(
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BMesh *bm,
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const BMPartialUpdate_Params *params,
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const unsigned int *verts_mask,
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const int verts_mask_count) ATTR_NONNULL(1, 2, 3) ATTR_WARN_UNUSED_RESULT;
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BMPartialUpdate *BM_mesh_partial_create_from_verts_group_multi(
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BMesh *bm,
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const BMPartialUpdate_Params *params,
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const int *verts_group,
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const int verts_group_count) ATTR_NONNULL(1, 2, 3) ATTR_WARN_UNUSED_RESULT;
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void BM_mesh_partial_destroy(BMPartialUpdate *bmpinfo) ATTR_NONNULL(1);
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