diff options
Diffstat (limited to 'source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_fdots_pos.cc')
-rw-r--r-- | source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_fdots_pos.cc | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_fdots_pos.cc b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_fdots_pos.cc new file mode 100644 index 00000000000..c4706c412c6 --- /dev/null +++ b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_fdots_pos.cc @@ -0,0 +1,119 @@ +/* + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * The Original Code is Copyright (C) 2021 by Blender Foundation. + * All rights reserved. + */ + +/** \file + * \ingroup draw + */ + +#include "draw_cache_extract_mesh_private.h" + +namespace blender::draw { + +/* ---------------------------------------------------------------------- */ +/** \name Extract Face-dots positions + * \{ */ + +static void extract_fdots_pos_init(const MeshRenderData *mr, + struct MeshBatchCache *UNUSED(cache), + void *buf, + void *tls_data) +{ + GPUVertBuf *vbo = static_cast<GPUVertBuf *>(buf); + static GPUVertFormat format = {0}; + if (format.attr_len == 0) { + GPU_vertformat_attr_add(&format, "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT); + } + + GPU_vertbuf_init_with_format(vbo, &format); + GPU_vertbuf_data_alloc(vbo, mr->poly_len); + void *vbo_data = GPU_vertbuf_get_data(vbo); + *(float(**)[3])tls_data = static_cast<float(*)[3]>(vbo_data); +} + +static void extract_fdots_pos_iter_poly_bm(const MeshRenderData *mr, + const BMFace *f, + const int f_index, + void *data) +{ + float(*center)[3] = *static_cast<float(**)[3]>(data); + + float *co = center[f_index]; + zero_v3(co); + + BMLoop *l_iter, *l_first; + l_iter = l_first = BM_FACE_FIRST_LOOP(f); + do { + add_v3_v3(co, bm_vert_co_get(mr, l_iter->v)); + } while ((l_iter = l_iter->next) != l_first); + mul_v3_fl(co, 1.0f / (float)f->len); +} + +static void extract_fdots_pos_iter_poly_mesh(const MeshRenderData *mr, + const MPoly *mp, + const int mp_index, + void *data) +{ + float(*center)[3] = *static_cast<float(**)[3]>(data); + float *co = center[mp_index]; + zero_v3(co); + + const MVert *mvert = mr->mvert; + const MLoop *mloop = mr->mloop; + + const int ml_index_end = mp->loopstart + mp->totloop; + for (int ml_index = mp->loopstart; ml_index < ml_index_end; ml_index += 1) { + const MLoop *ml = &mloop[ml_index]; + if (mr->use_subsurf_fdots) { + const MVert *mv = &mr->mvert[ml->v]; + if (mv->flag & ME_VERT_FACEDOT) { + copy_v3_v3(center[mp_index], mv->co); + break; + } + } + else { + const MVert *mv = &mvert[ml->v]; + add_v3_v3(center[mp_index], mv->co); + } + } + + if (!mr->use_subsurf_fdots) { + mul_v3_fl(co, 1.0f / (float)mp->totloop); + } +} + +constexpr MeshExtract create_extractor_fdots_pos() +{ + MeshExtract extractor = {nullptr}; + extractor.init = extract_fdots_pos_init; + extractor.iter_poly_bm = extract_fdots_pos_iter_poly_bm; + extractor.iter_poly_mesh = extract_fdots_pos_iter_poly_mesh; + extractor.data_type = MR_DATA_NONE; + extractor.data_size = sizeof(float(*)[3]); + extractor.use_threading = true; + extractor.mesh_buffer_offset = offsetof(MeshBufferCache, vbo.fdots_pos); + return extractor; +} + +/** \} */ + +} // namespace blender::draw + +extern "C" { +const MeshExtract extract_fdots_pos = blender::draw::create_extractor_fdots_pos(); +} |