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Diffstat (limited to 'source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_select_idx.cc')
| -rw-r--r-- | source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_select_idx.cc | 295 |
1 files changed, 295 insertions, 0 deletions
diff --git a/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_select_idx.cc b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_select_idx.cc new file mode 100644 index 00000000000..ac44e97f229 --- /dev/null +++ b/source/blender/draw/intern/mesh_extractors/extract_mesh_vbo_select_idx.cc @@ -0,0 +1,295 @@ +/* + * 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 Selection Index + * \{ */ + +static void extract_select_idx_init_impl(const MeshRenderData *UNUSED(mr), + const int len, + void *buf, + void *tls_data) +{ + GPUVertBuf *vbo = static_cast<GPUVertBuf *>(buf); + static GPUVertFormat format = {0}; + if (format.attr_len == 0) { + /* TODO: rename "color" to something more descriptive. */ + GPU_vertformat_attr_add(&format, "color", GPU_COMP_U32, 1, GPU_FETCH_INT); + } + GPU_vertbuf_init_with_format(vbo, &format); + GPU_vertbuf_data_alloc(vbo, len); + *(uint32_t **)tls_data = (uint32_t *)GPU_vertbuf_get_data(vbo); +} + +static void extract_select_idx_init(const MeshRenderData *mr, + struct MeshBatchCache *UNUSED(cache), + void *buf, + void *tls_data) +{ + extract_select_idx_init_impl(mr, mr->loop_len + mr->loop_loose_len, buf, tls_data); +} + +/* TODO: Use #glVertexID to get loop index and use the data structure on the CPU to retrieve the + * select element associated with this loop ID. This would remove the need for this separate + * index VBO's. We could upload the p/e/v_origindex as a buffer texture and sample it inside the + * shader to output original index. */ + +static void extract_poly_idx_iter_poly_bm(const MeshRenderData *UNUSED(mr), + const BMFace *f, + const int f_index, + void *data) +{ + BMLoop *l_iter, *l_first; + l_iter = l_first = BM_FACE_FIRST_LOOP(f); + do { + const int l_index = BM_elem_index_get(l_iter); + (*(uint32_t **)data)[l_index] = f_index; + } while ((l_iter = l_iter->next) != l_first); +} + +static void extract_edge_idx_iter_poly_bm(const MeshRenderData *UNUSED(mr), + const BMFace *f, + const int UNUSED(f_index), + void *data) +{ + BMLoop *l_iter, *l_first; + l_iter = l_first = BM_FACE_FIRST_LOOP(f); + do { + const int l_index = BM_elem_index_get(l_iter); + (*(uint32_t **)data)[l_index] = BM_elem_index_get(l_iter->e); + } while ((l_iter = l_iter->next) != l_first); +} + +static void extract_vert_idx_iter_poly_bm(const MeshRenderData *UNUSED(mr), + const BMFace *f, + const int UNUSED(f_index), + void *data) +{ + BMLoop *l_iter, *l_first; + l_iter = l_first = BM_FACE_FIRST_LOOP(f); + do { + const int l_index = BM_elem_index_get(l_iter); + (*(uint32_t **)data)[l_index] = BM_elem_index_get(l_iter->v); + } while ((l_iter = l_iter->next) != l_first); +} + +static void extract_edge_idx_iter_ledge_bm(const MeshRenderData *mr, + const BMEdge *eed, + const int ledge_index, + void *data) +{ + (*(uint32_t **)data)[mr->loop_len + ledge_index * 2 + 0] = BM_elem_index_get(eed); + (*(uint32_t **)data)[mr->loop_len + ledge_index * 2 + 1] = BM_elem_index_get(eed); +} + +static void extract_vert_idx_iter_ledge_bm(const MeshRenderData *mr, + const BMEdge *eed, + const int ledge_index, + void *data) +{ + (*(uint32_t **)data)[mr->loop_len + ledge_index * 2 + 0] = BM_elem_index_get(eed->v1); + (*(uint32_t **)data)[mr->loop_len + ledge_index * 2 + 1] = BM_elem_index_get(eed->v2); +} + +static void extract_vert_idx_iter_lvert_bm(const MeshRenderData *mr, + const BMVert *eve, + const int lvert_index, + void *data) +{ + const int offset = mr->loop_len + (mr->edge_loose_len * 2); + + (*(uint32_t **)data)[offset + lvert_index] = BM_elem_index_get(eve); +} + +static void extract_poly_idx_iter_poly_mesh(const MeshRenderData *mr, + const MPoly *mp, + const int mp_index, + void *data) +{ + const int ml_index_end = mp->loopstart + mp->totloop; + for (int ml_index = mp->loopstart; ml_index < ml_index_end; ml_index += 1) { + (*(uint32_t **)data)[ml_index] = (mr->p_origindex) ? mr->p_origindex[mp_index] : mp_index; + } +} + +static void extract_edge_idx_iter_poly_mesh(const MeshRenderData *mr, + const MPoly *mp, + const int UNUSED(mp_index), + void *data) +{ + 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]; + (*(uint32_t **)data)[ml_index] = (mr->e_origindex) ? mr->e_origindex[ml->e] : ml->e; + } +} + +static void extract_vert_idx_iter_poly_mesh(const MeshRenderData *mr, + const MPoly *mp, + const int UNUSED(mp_index), + void *data) +{ + 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]; + (*(uint32_t **)data)[ml_index] = (mr->v_origindex) ? mr->v_origindex[ml->v] : ml->v; + } +} + +static void extract_edge_idx_iter_ledge_mesh(const MeshRenderData *mr, + const MEdge *UNUSED(med), + const int ledge_index, + void *data) +{ + const int e_index = mr->ledges[ledge_index]; + const int e_orig = (mr->e_origindex) ? mr->e_origindex[e_index] : e_index; + (*(uint32_t **)data)[mr->loop_len + ledge_index * 2 + 0] = e_orig; + (*(uint32_t **)data)[mr->loop_len + ledge_index * 2 + 1] = e_orig; +} + +static void extract_vert_idx_iter_ledge_mesh(const MeshRenderData *mr, + const MEdge *med, + const int ledge_index, + void *data) +{ + int v1_orig = (mr->v_origindex) ? mr->v_origindex[med->v1] : med->v1; + int v2_orig = (mr->v_origindex) ? mr->v_origindex[med->v2] : med->v2; + (*(uint32_t **)data)[mr->loop_len + ledge_index * 2 + 0] = v1_orig; + (*(uint32_t **)data)[mr->loop_len + ledge_index * 2 + 1] = v2_orig; +} + +static void extract_vert_idx_iter_lvert_mesh(const MeshRenderData *mr, + const MVert *UNUSED(mv), + const int lvert_index, + void *data) +{ + const int offset = mr->loop_len + (mr->edge_loose_len * 2); + + const int v_index = mr->lverts[lvert_index]; + const int v_orig = (mr->v_origindex) ? mr->v_origindex[v_index] : v_index; + (*(uint32_t **)data)[offset + lvert_index] = v_orig; +} + +constexpr MeshExtract create_extractor_poly_idx() +{ + MeshExtract extractor = {nullptr}; + extractor.init = extract_select_idx_init; + extractor.iter_poly_bm = extract_poly_idx_iter_poly_bm; + extractor.iter_poly_mesh = extract_poly_idx_iter_poly_mesh; + extractor.data_type = MR_DATA_NONE; + extractor.data_size = sizeof(uint32_t *); + extractor.use_threading = true; + extractor.mesh_buffer_offset = offsetof(MeshBufferCache, vbo.poly_idx); + return extractor; +} + +constexpr MeshExtract create_extractor_edge_idx() +{ + MeshExtract extractor = {nullptr}; + extractor.init = extract_select_idx_init; + extractor.iter_poly_bm = extract_edge_idx_iter_poly_bm; + extractor.iter_poly_mesh = extract_edge_idx_iter_poly_mesh; + extractor.iter_ledge_bm = extract_edge_idx_iter_ledge_bm; + extractor.iter_ledge_mesh = extract_edge_idx_iter_ledge_mesh; + extractor.data_type = MR_DATA_NONE; + extractor.data_size = sizeof(uint32_t *); + extractor.use_threading = true; + extractor.mesh_buffer_offset = offsetof(MeshBufferCache, vbo.edge_idx); + return extractor; +} + +constexpr MeshExtract create_extractor_vert_idx() +{ + MeshExtract extractor = {nullptr}; + extractor.init = extract_select_idx_init; + extractor.iter_poly_bm = extract_vert_idx_iter_poly_bm; + extractor.iter_poly_mesh = extract_vert_idx_iter_poly_mesh; + extractor.iter_ledge_bm = extract_vert_idx_iter_ledge_bm; + extractor.iter_ledge_mesh = extract_vert_idx_iter_ledge_mesh; + extractor.iter_lvert_bm = extract_vert_idx_iter_lvert_bm; + extractor.iter_lvert_mesh = extract_vert_idx_iter_lvert_mesh; + extractor.data_type = MR_DATA_NONE; + extractor.data_size = sizeof(uint32_t *); + extractor.use_threading = true; + extractor.mesh_buffer_offset = offsetof(MeshBufferCache, vbo.vert_idx); + return extractor; +} + +static void extract_fdot_idx_init(const MeshRenderData *mr, + struct MeshBatchCache *UNUSED(cache), + void *buf, + void *tls_data) +{ + extract_select_idx_init_impl(mr, mr->poly_len, buf, tls_data); +} + +static void extract_fdot_idx_iter_poly_bm(const MeshRenderData *UNUSED(mr), + const BMFace *UNUSED(f), + const int f_index, + void *data) +{ + (*(uint32_t **)data)[f_index] = f_index; +} + +static void extract_fdot_idx_iter_poly_mesh(const MeshRenderData *mr, + const MPoly *UNUSED(mp), + const int mp_index, + void *data) +{ + if (mr->p_origindex != nullptr) { + (*(uint32_t **)data)[mp_index] = mr->p_origindex[mp_index]; + } + else { + (*(uint32_t **)data)[mp_index] = mp_index; + } +} + +constexpr MeshExtract create_extractor_fdot_idx() +{ + MeshExtract extractor = {nullptr}; + extractor.init = extract_fdot_idx_init; + extractor.iter_poly_bm = extract_fdot_idx_iter_poly_bm; + extractor.iter_poly_mesh = extract_fdot_idx_iter_poly_mesh; + extractor.data_type = MR_DATA_NONE; + extractor.data_size = sizeof(uint32_t *); + extractor.use_threading = true; + extractor.mesh_buffer_offset = offsetof(MeshBufferCache, vbo.fdot_idx); + return extractor; +} + +/** \} */ + +} // namespace blender::draw + +extern "C" { +const MeshExtract extract_poly_idx = blender::draw::create_extractor_poly_idx(); +const MeshExtract extract_edge_idx = blender::draw::create_extractor_edge_idx(); +const MeshExtract extract_vert_idx = blender::draw::create_extractor_vert_idx(); +const MeshExtract extract_fdot_idx = blender::draw::create_extractor_fdot_idx(); +} |