diff options
Diffstat (limited to 'source/blender/draw/intern/draw_cache_impl_curve.cc')
| -rw-r--r-- | source/blender/draw/intern/draw_cache_impl_curve.cc | 1131 |
1 files changed, 1131 insertions, 0 deletions
diff --git a/source/blender/draw/intern/draw_cache_impl_curve.cc b/source/blender/draw/intern/draw_cache_impl_curve.cc new file mode 100644 index 00000000000..ddafc7205bb --- /dev/null +++ b/source/blender/draw/intern/draw_cache_impl_curve.cc @@ -0,0 +1,1131 @@ +/* + * 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) 2017 by Blender Foundation. + * All rights reserved. + */ + +/** \file + * \ingroup draw + * + * \brief Curve API for render engines + */ + +#include "MEM_guardedalloc.h" + +#include "BLI_listbase.h" +#include "BLI_math_vector.h" +#include "BLI_utildefines.h" + +#include "DNA_curve_types.h" + +#include "BKE_curve.h" +#include "BKE_displist.h" +#include "BKE_font.h" + +#include "GPU_batch.h" +#include "GPU_capabilities.h" +#include "GPU_material.h" +#include "GPU_texture.h" + +#include "UI_resources.h" + +#include "DRW_render.h" + +#include "draw_cache_inline.h" + +#include "draw_cache_impl.h" /* own include */ + +/* See: edit_curve_point_vert.glsl for duplicate includes. */ +#define SELECT 1 +#define ACTIVE_NURB (1 << 2) +#define BEZIER_HANDLE (1 << 3) +#define EVEN_U_BIT (1 << 4) /* Alternate this bit for every U vert. */ +#define COLOR_SHIFT 5 + +/* Used as values of `color_id` in `edit_curve_overlay_handle_geom.glsl` */ +enum { + COLOR_NURB_ULINE_ID = TH_HANDLE_AUTOCLAMP - TH_HANDLE_FREE + 2, + + TOT_HANDLE_COL, +}; + +/** + * TODO + * - Ensure `CurveCache`, `SEQUENCER_DAG_WORKAROUND`. + * - Check number of verts/edges to see if cache is valid. + * - Check if 'overlay.edges' can use single attribute per edge, not 2 (for selection drawing). + */ + +static void curve_batch_cache_clear(Curve *cu); + +/* ---------------------------------------------------------------------- */ +/* Curve Interface, direct access to basic data. */ + +static void curve_render_overlay_verts_edges_len_get(ListBase *lb, + int *r_vert_len, + int *r_edge_len) +{ + BLI_assert(r_vert_len || r_edge_len); + int vert_len = 0; + int edge_len = 0; + LISTBASE_FOREACH (Nurb *, nu, lb) { + if (nu->bezt) { + vert_len += nu->pntsu * 3; + /* 2x handles per point*/ + edge_len += 2 * nu->pntsu; + } + else if (nu->bp) { + vert_len += nu->pntsu * nu->pntsv; + /* segments between points */ + edge_len += (nu->pntsu - 1) * nu->pntsv; + edge_len += (nu->pntsv - 1) * nu->pntsu; + } + } + if (r_vert_len) { + *r_vert_len = vert_len; + } + if (r_edge_len) { + *r_edge_len = edge_len; + } +} + +static void curve_render_wire_verts_edges_len_get(const CurveCache *ob_curve_cache, + int *r_curve_len, + int *r_vert_len, + int *r_edge_len) +{ + BLI_assert(r_vert_len || r_edge_len); + int vert_len = 0; + int edge_len = 0; + int curve_len = 0; + LISTBASE_FOREACH (const BevList *, bl, &ob_curve_cache->bev) { + if (bl->nr > 0) { + const bool is_cyclic = bl->poly != -1; + edge_len += (is_cyclic) ? bl->nr : bl->nr - 1; + vert_len += bl->nr; + curve_len += 1; + } + } + LISTBASE_FOREACH (const DispList *, dl, &ob_curve_cache->disp) { + if (ELEM(dl->type, DL_SEGM, DL_POLY)) { + BLI_assert(dl->parts == 1); + const bool is_cyclic = dl->type == DL_POLY; + edge_len += (is_cyclic) ? dl->nr : dl->nr - 1; + vert_len += dl->nr; + curve_len += 1; + } + } + if (r_vert_len) { + *r_vert_len = vert_len; + } + if (r_edge_len) { + *r_edge_len = edge_len; + } + if (r_curve_len) { + *r_curve_len = curve_len; + } +} + +static int curve_render_normal_len_get(const ListBase *lb, const CurveCache *ob_curve_cache) +{ + int normal_len = 0; + const BevList *bl; + const Nurb *nu; + for (bl = (const BevList *)ob_curve_cache->bev.first, nu = (const Nurb *)lb->first; nu && bl; + bl = bl->next, nu = nu->next) { + int nr = bl->nr; + int skip = nu->resolu / 16; +#if 0 + while (nr-- > 0) { /* accounts for empty bevel lists */ + normal_len += 1; + nr -= skip; + } +#else + /* Same as loop above */ + normal_len += (nr / (skip + 1)) + ((nr % (skip + 1)) != 0); +#endif + } + return normal_len; +} + +/* ---------------------------------------------------------------------- */ +/* Curve Interface, indirect, partially cached access to complex data. */ + +struct CurveRenderData { + int types; + + struct { + int vert_len; + int edge_len; + } overlay; + + struct { + int curve_len; + int vert_len; + int edge_len; + } wire; + + /* edit mode normal's */ + struct { + /* 'edge_len == len * 2' + * 'vert_len == len * 3' */ + int len; + } normal; + + struct { + EditFont *edit_font; + } text; + + /* borrow from 'Object' */ + CurveCache *ob_curve_cache; + + /* borrow from 'Curve' */ + ListBase *nurbs; + + /* edit, index in nurb list */ + int actnu; + /* edit, index in active nurb (BPoint or BezTriple) */ + int actvert; +}; + +enum { + /* Wire center-line */ + CU_DATATYPE_WIRE = 1 << 0, + /* Edit-mode verts and optionally handles */ + CU_DATATYPE_OVERLAY = 1 << 1, + /* Edit-mode normals */ + CU_DATATYPE_NORMAL = 1 << 2, + /* Geometry */ + CU_DATATYPE_SURFACE = 1 << 3, + /* Text */ + CU_DATATYPE_TEXT_SELECT = 1 << 4, +}; + +/* + * ob_curve_cache can be NULL, only needed for CU_DATATYPE_WIRE + */ +static CurveRenderData *curve_render_data_create(Curve *cu, + CurveCache *ob_curve_cache, + const int types) +{ + CurveRenderData *rdata = (CurveRenderData *)MEM_callocN(sizeof(*rdata), __func__); + rdata->types = types; + ListBase *nurbs; + + rdata->actnu = cu->actnu; + rdata->actvert = cu->actvert; + + rdata->ob_curve_cache = ob_curve_cache; + + if (types & CU_DATATYPE_WIRE) { + curve_render_wire_verts_edges_len_get(rdata->ob_curve_cache, + &rdata->wire.curve_len, + &rdata->wire.vert_len, + &rdata->wire.edge_len); + } + + if (cu->editnurb) { + EditNurb *editnurb = cu->editnurb; + nurbs = &editnurb->nurbs; + + if (types & CU_DATATYPE_OVERLAY) { + curve_render_overlay_verts_edges_len_get( + nurbs, &rdata->overlay.vert_len, &rdata->overlay.edge_len); + + rdata->actnu = cu->actnu; + rdata->actvert = cu->actvert; + } + if (types & CU_DATATYPE_NORMAL) { + rdata->normal.len = curve_render_normal_len_get(nurbs, rdata->ob_curve_cache); + } + } + else { + nurbs = &cu->nurb; + } + + rdata->nurbs = nurbs; + + rdata->text.edit_font = cu->editfont; + + return rdata; +} + +static void curve_render_data_free(CurveRenderData *rdata) +{ +#if 0 + if (rdata->loose_verts) { + MEM_freeN(rdata->loose_verts); + } +#endif + MEM_freeN(rdata); +} + +static int curve_render_data_overlay_verts_len_get(const CurveRenderData *rdata) +{ + BLI_assert(rdata->types & CU_DATATYPE_OVERLAY); + return rdata->overlay.vert_len; +} + +static int curve_render_data_overlay_edges_len_get(const CurveRenderData *rdata) +{ + BLI_assert(rdata->types & CU_DATATYPE_OVERLAY); + return rdata->overlay.edge_len; +} + +static int curve_render_data_wire_verts_len_get(const CurveRenderData *rdata) +{ + BLI_assert(rdata->types & CU_DATATYPE_WIRE); + return rdata->wire.vert_len; +} + +static int curve_render_data_wire_edges_len_get(const CurveRenderData *rdata) +{ + BLI_assert(rdata->types & CU_DATATYPE_WIRE); + return rdata->wire.edge_len; +} + +static int curve_render_data_wire_curve_len_get(const CurveRenderData *rdata) +{ + BLI_assert(rdata->types & CU_DATATYPE_WIRE); + return rdata->wire.curve_len; +} + +static int curve_render_data_normal_len_get(const CurveRenderData *rdata) +{ + BLI_assert(rdata->types & CU_DATATYPE_NORMAL); + return rdata->normal.len; +} + +static void curve_cd_calc_used_gpu_layers(CustomDataMask *cd_layers, + struct GPUMaterial **gpumat_array, + int gpumat_array_len) +{ + for (int i = 0; i < gpumat_array_len; i++) { + struct GPUMaterial *gpumat = gpumat_array[i]; + if (gpumat == nullptr) { + continue; + } + + ListBase gpu_attrs = GPU_material_attributes(gpumat); + LISTBASE_FOREACH (GPUMaterialAttribute *, gpu_attr, &gpu_attrs) { + const char *name = gpu_attr->name; + int type = gpu_attr->type; + + /* Curves cannot have named layers. + * Note: We could relax this assumption later. */ + if (name[0] != '\0') { + continue; + } + + if (type == CD_AUTO_FROM_NAME) { + type = CD_MTFACE; + } + + switch (type) { + case CD_MTFACE: + *cd_layers |= CD_MASK_MLOOPUV; + break; + case CD_TANGENT: + *cd_layers |= CD_MASK_TANGENT; + break; + case CD_MCOL: + /* Curve object don't have Color data. */ + break; + case CD_ORCO: + *cd_layers |= CD_MASK_ORCO; + break; + } + } + } +} + +/* ---------------------------------------------------------------------- */ +/* Curve GPUBatch Cache */ + +struct CurveBatchCache { + struct { + GPUVertBuf *pos_nor; + GPUVertBuf *edge_fac; + GPUVertBuf *curves_pos; + + GPUVertBuf *loop_pos_nor; + GPUVertBuf *loop_uv; + GPUVertBuf *loop_tan; + } ordered; + + struct { + /* Curve points. Aligned with ordered.pos_nor */ + GPUVertBuf *curves_nor; + GPUVertBuf *curves_weight; /* TODO. */ + /* Edit points (beztriples and bpoints) */ + GPUVertBuf *pos; + GPUVertBuf *data; + } edit; + + struct { + GPUIndexBuf *surfaces_tris; + GPUIndexBuf *surfaces_lines; + GPUIndexBuf *curves_lines; + GPUIndexBuf *edges_adj_lines; + /* Edit mode */ + GPUIndexBuf *edit_verts; + GPUIndexBuf *edit_lines; + } ibo; + + struct { + GPUBatch *surfaces; + GPUBatch *surfaces_edges; + GPUBatch *curves; + /* control handles and vertices */ + GPUBatch *edit_edges; + GPUBatch *edit_verts; + GPUBatch *edit_normals; + GPUBatch *edge_detection; + } batch; + + GPUIndexBuf **surf_per_mat_tris; + GPUBatch **surf_per_mat; + int mat_len; + CustomDataMask cd_used, cd_needed; + + /* settings to determine if cache is invalid */ + bool is_dirty; + bool is_editmode; + + /* Valid only if edge_detection is up to date. */ + bool is_manifold; +}; + +/* GPUBatch cache management. */ + +static bool curve_batch_cache_valid(Curve *cu) +{ + CurveBatchCache *cache = (CurveBatchCache *)cu->batch_cache; + + if (cache == nullptr) { + return false; + } + + if (cache->mat_len != DRW_curve_material_count_get(cu)) { + return false; + } + + if (cache->is_dirty) { + return false; + } + + if (cache->is_editmode != ((cu->editnurb != nullptr) || (cu->editfont != nullptr))) { + return false; + } + + if (cache->is_editmode) { + if (cu->editfont) { + /* TODO */ + } + } + + return true; +} + +static void curve_batch_cache_init(Curve *cu) +{ + CurveBatchCache *cache = (CurveBatchCache *)cu->batch_cache; + + if (!cache) { + cache = (CurveBatchCache *)MEM_callocN(sizeof(*cache), __func__); + cu->batch_cache = cache; + } + else { + memset(cache, 0, sizeof(*cache)); + } + +#if 0 + ListBase *nurbs; + if (cu->editnurb) { + EditNurb *editnurb = cu->editnurb; + nurbs = &editnurb->nurbs; + } + else { + nurbs = &cu->nurb; + } +#endif + + cache->cd_used = 0; + cache->mat_len = DRW_curve_material_count_get(cu); + cache->surf_per_mat_tris = (GPUIndexBuf **)MEM_callocN( + sizeof(*cache->surf_per_mat_tris) * cache->mat_len, __func__); + cache->surf_per_mat = (GPUBatch **)MEM_callocN(sizeof(*cache->surf_per_mat) * cache->mat_len, + __func__); + + cache->is_editmode = (cu->editnurb != nullptr) || (cu->editfont != nullptr); + + cache->is_dirty = false; +} + +void DRW_curve_batch_cache_validate(Curve *cu) +{ + if (!curve_batch_cache_valid(cu)) { + curve_batch_cache_clear(cu); + curve_batch_cache_init(cu); + } +} + +static CurveBatchCache *curve_batch_cache_get(Curve *cu) +{ + return (CurveBatchCache *)cu->batch_cache; +} + +void DRW_curve_batch_cache_dirty_tag(Curve *cu, int mode) +{ + CurveBatchCache *cache = (CurveBatchCache *)cu->batch_cache; + if (cache == nullptr) { + return; + } + switch (mode) { + case BKE_CURVE_BATCH_DIRTY_ALL: + cache->is_dirty = true; + break; + case BKE_CURVE_BATCH_DIRTY_SELECT: + GPU_VERTBUF_DISCARD_SAFE(cache->edit.data); + + GPU_BATCH_DISCARD_SAFE(cache->batch.edit_edges); + GPU_BATCH_DISCARD_SAFE(cache->batch.edit_verts); + break; + default: + BLI_assert(0); + } +} + +static void curve_batch_cache_clear(Curve *cu) +{ + CurveBatchCache *cache = (CurveBatchCache *)cu->batch_cache; + if (!cache) { + return; + } + + for (int i = 0; i < sizeof(cache->ordered) / sizeof(void *); i++) { + GPUVertBuf **vbo = (GPUVertBuf **)&cache->ordered; + GPU_VERTBUF_DISCARD_SAFE(vbo[i]); + } + for (int i = 0; i < sizeof(cache->edit) / sizeof(void *); i++) { + GPUVertBuf **vbo = (GPUVertBuf **)&cache->edit; + GPU_VERTBUF_DISCARD_SAFE(vbo[i]); + } + for (int i = 0; i < sizeof(cache->ibo) / sizeof(void *); i++) { + GPUIndexBuf **ibo = (GPUIndexBuf **)&cache->ibo; + GPU_INDEXBUF_DISCARD_SAFE(ibo[i]); + } + for (int i = 0; i < sizeof(cache->batch) / sizeof(void *); i++) { + GPUBatch **batch = (GPUBatch **)&cache->batch; + GPU_BATCH_DISCARD_SAFE(batch[i]); + } + + for (int i = 0; i < cache->mat_len; i++) { + GPU_INDEXBUF_DISCARD_SAFE(cache->surf_per_mat_tris[i]); + GPU_BATCH_DISCARD_SAFE(cache->surf_per_mat[i]); + } + MEM_SAFE_FREE(cache->surf_per_mat_tris); + MEM_SAFE_FREE(cache->surf_per_mat); + cache->mat_len = 0; + cache->cd_used = 0; +} + +void DRW_curve_batch_cache_free(Curve *cu) +{ + curve_batch_cache_clear(cu); + MEM_SAFE_FREE(cu->batch_cache); +} + +/* -------------------------------------------------------------------- */ +/** \name Private Curve Cache API + * \{ */ + +/* GPUBatch cache usage. */ +static void curve_create_curves_pos(CurveRenderData *rdata, GPUVertBuf *vbo_curves_pos) +{ + BLI_assert(rdata->ob_curve_cache != nullptr); + + static GPUVertFormat format = {0}; + static struct { + uint pos; + } attr_id; + if (format.attr_len == 0) { + attr_id.pos = GPU_vertformat_attr_add(&format, "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT); + } + + const int vert_len = curve_render_data_wire_verts_len_get(rdata); + GPU_vertbuf_init_with_format(vbo_curves_pos, &format); + GPU_vertbuf_data_alloc(vbo_curves_pos, vert_len); + + int v_idx = 0; + LISTBASE_FOREACH (const BevList *, bl, &rdata->ob_curve_cache->bev) { + if (bl->nr <= 0) { + continue; + } + const int i_end = v_idx + bl->nr; + for (const BevPoint *bevp = bl->bevpoints; v_idx < i_end; v_idx++, bevp++) { + GPU_vertbuf_attr_set(vbo_curves_pos, attr_id.pos, v_idx, bevp->vec); + } + } + LISTBASE_FOREACH (const DispList *, dl, &rdata->ob_curve_cache->disp) { + if (ELEM(dl->type, DL_SEGM, DL_POLY)) { + for (int i = 0; i < dl->nr; v_idx++, i++) { + GPU_vertbuf_attr_set(vbo_curves_pos, attr_id.pos, v_idx, &((float(*)[3])dl->verts)[i]); + } + } + } + BLI_assert(v_idx == vert_len); +} + +static void curve_create_curves_lines(CurveRenderData *rdata, GPUIndexBuf *ibo_curve_lines) +{ + BLI_assert(rdata->ob_curve_cache != nullptr); + + const int vert_len = curve_render_data_wire_verts_len_get(rdata); + const int edge_len = curve_render_data_wire_edges_len_get(rdata); + const int curve_len = curve_render_data_wire_curve_len_get(rdata); + /* Count the last vertex or each strip and the primitive restart. */ + const int index_len = edge_len + curve_len * 2; + + GPUIndexBufBuilder elb; + GPU_indexbuf_init_ex(&elb, GPU_PRIM_LINE_STRIP, index_len, vert_len); + + int v_idx = 0; + LISTBASE_FOREACH (const BevList *, bl, &rdata->ob_curve_cache->bev) { + if (bl->nr <= 0) { + continue; + } + const bool is_cyclic = bl->poly != -1; + if (is_cyclic) { + GPU_indexbuf_add_generic_vert(&elb, v_idx + (bl->nr - 1)); + } + for (int i = 0; i < bl->nr; i++) { + GPU_indexbuf_add_generic_vert(&elb, v_idx + i); + } + GPU_indexbuf_add_primitive_restart(&elb); + v_idx += bl->nr; + } + LISTBASE_FOREACH (const DispList *, dl, &rdata->ob_curve_cache->disp) { + if (ELEM(dl->type, DL_SEGM, DL_POLY)) { + const bool is_cyclic = dl->type == DL_POLY; + if (is_cyclic) { + GPU_indexbuf_add_generic_vert(&elb, v_idx + (dl->nr - 1)); + } + for (int i = 0; i < dl->nr; i++) { + GPU_indexbuf_add_generic_vert(&elb, v_idx + i); + } + GPU_indexbuf_add_primitive_restart(&elb); + v_idx += dl->nr; + } + } + GPU_indexbuf_build_in_place(&elb, ibo_curve_lines); +} + +static void curve_create_edit_curves_nor(CurveRenderData *rdata, + GPUVertBuf *vbo_curves_nor, + const Scene *scene) +{ + const bool do_hq_normals = (scene->r.perf_flag & SCE_PERF_HQ_NORMALS) != 0 || + GPU_use_hq_normals_workaround(); + + static GPUVertFormat format = {0}; + static GPUVertFormat format_hq = {0}; + static struct { + uint pos, nor, tan, rad; + uint pos_hq, nor_hq, tan_hq, rad_hq; + } attr_id; + if (format.attr_len == 0) { + /* initialize vertex formats */ + attr_id.pos = GPU_vertformat_attr_add(&format, "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT); + attr_id.rad = GPU_vertformat_attr_add(&format, "rad", GPU_COMP_F32, 1, GPU_FETCH_FLOAT); + attr_id.nor = GPU_vertformat_attr_add( + &format, "nor", GPU_COMP_I10, 3, GPU_FETCH_INT_TO_FLOAT_UNIT); + attr_id.tan = GPU_vertformat_attr_add( + &format, "tan", GPU_COMP_I10, 3, GPU_FETCH_INT_TO_FLOAT_UNIT); + + attr_id.pos_hq = GPU_vertformat_attr_add(&format_hq, "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT); + attr_id.rad_hq = GPU_vertformat_attr_add(&format_hq, "rad", GPU_COMP_F32, 1, GPU_FETCH_FLOAT); + attr_id.nor_hq = GPU_vertformat_attr_add( + &format_hq, "nor", GPU_COMP_I16, 3, GPU_FETCH_INT_TO_FLOAT_UNIT); + attr_id.tan_hq = GPU_vertformat_attr_add( + &format_hq, "tan", GPU_COMP_I16, 3, GPU_FETCH_INT_TO_FLOAT_UNIT); + } + + const GPUVertFormat *format_ptr = do_hq_normals ? &format_hq : &format; + + int verts_len_capacity = curve_render_data_normal_len_get(rdata) * 2; + int vbo_len_used = 0; + + GPU_vertbuf_init_with_format(vbo_curves_nor, format_ptr); + GPU_vertbuf_data_alloc(vbo_curves_nor, verts_len_capacity); + + const BevList *bl; + const Nurb *nu; + + const uint pos_id = do_hq_normals ? attr_id.pos_hq : attr_id.pos; + const uint nor_id = do_hq_normals ? attr_id.nor_hq : attr_id.nor; + const uint tan_id = do_hq_normals ? attr_id.tan_hq : attr_id.tan; + const uint rad_id = do_hq_normals ? attr_id.rad_hq : attr_id.rad; + + for (bl = (const BevList *)rdata->ob_curve_cache->bev.first, + nu = (const Nurb *)rdata->nurbs->first; + nu && bl; + bl = bl->next, nu = nu->next) { + const BevPoint *bevp = bl->bevpoints; + int nr = bl->nr; + int skip = nu->resolu / 16; + + while (nr-- > 0) { /* accounts for empty bevel lists */ + float nor[3] = {1.0f, 0.0f, 0.0f}; + mul_qt_v3(bevp->quat, nor); + + GPUNormal pnor; + GPUNormal ptan; + GPU_normal_convert_v3(&pnor, nor, do_hq_normals); + GPU_normal_convert_v3(&ptan, bevp->dir, do_hq_normals); + /* Only set attributes for one vertex. */ + GPU_vertbuf_attr_set(vbo_curves_nor, pos_id, vbo_len_used, bevp->vec); + GPU_vertbuf_attr_set(vbo_curves_nor, rad_id, vbo_len_used, &bevp->radius); + GPU_vertbuf_attr_set(vbo_curves_nor, nor_id, vbo_len_used, &pnor); + GPU_vertbuf_attr_set(vbo_curves_nor, tan_id, vbo_len_used, &ptan); + vbo_len_used++; + + /* Skip the other vertex (it does not need to be offsetted). */ + GPU_vertbuf_attr_set(vbo_curves_nor, attr_id.pos, vbo_len_used, bevp->vec); + vbo_len_used++; + + bevp += skip + 1; + nr -= skip; + } + } + BLI_assert(vbo_len_used == verts_len_capacity); +} + +static uint8_t beztriple_vflag_get(CurveRenderData *rdata, + uint8_t flag, + uint8_t col_id, + int v_idx, + int nu_id, + bool handle_point, + const bool handle_selected) +{ + uint8_t vflag = 0; + SET_FLAG_FROM_TEST(vflag, (flag & SELECT), VFLAG_VERT_SELECTED); + SET_FLAG_FROM_TEST(vflag, (v_idx == rdata->actvert && nu_id == rdata->actnu), VFLAG_VERT_ACTIVE); + SET_FLAG_FROM_TEST(vflag, (nu_id == rdata->actnu), ACTIVE_NURB); + SET_FLAG_FROM_TEST(vflag, handle_point, BEZIER_HANDLE); + SET_FLAG_FROM_TEST(vflag, handle_selected, VFLAG_VERT_SELECTED_BEZT_HANDLE); + /* Setting flags that overlap with will cause the color id not to work properly. */ + BLI_assert((vflag >> COLOR_SHIFT) == 0); + /* handle color id */ + vflag |= col_id << COLOR_SHIFT; + return vflag; +} + +static uint8_t bpoint_vflag_get(CurveRenderData *rdata, uint8_t flag, int v_idx, int nu_id, int u) +{ + uint8_t vflag = 0; + SET_FLAG_FROM_TEST(vflag, (flag & SELECT), VFLAG_VERT_SELECTED); + SET_FLAG_FROM_TEST(vflag, (v_idx == rdata->actvert && nu_id == rdata->actnu), VFLAG_VERT_ACTIVE); + SET_FLAG_FROM_TEST(vflag, (nu_id == rdata->actnu), ACTIVE_NURB); + SET_FLAG_FROM_TEST(vflag, ((u % 2) == 0), EVEN_U_BIT); + /* Setting flags that overlap with will cause the color id not to work properly. */ + BLI_assert((vflag >> COLOR_SHIFT) == 0); + vflag |= COLOR_NURB_ULINE_ID << COLOR_SHIFT; + return vflag; +} + +static void curve_create_edit_data_and_handles(CurveRenderData *rdata, + GPUVertBuf *vbo_pos, + GPUVertBuf *vbo_data, + GPUIndexBuf *ibo_edit_verts_points, + GPUIndexBuf *ibo_edit_lines) +{ + static GPUVertFormat format_pos = {0}; + static GPUVertFormat format_data = {0}; + static struct { + uint pos, data; + } attr_id; + if (format_pos.attr_len == 0) { + /* initialize vertex formats */ + attr_id.pos = GPU_vertformat_attr_add(&format_pos, "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT); + attr_id.data = GPU_vertformat_attr_add(&format_data, "data", GPU_COMP_U8, 1, GPU_FETCH_INT); + } + + int verts_len_capacity = curve_render_data_overlay_verts_len_get(rdata); + int edges_len_capacity = curve_render_data_overlay_edges_len_get(rdata) * 2; + int vbo_len_used = 0; + + if (DRW_TEST_ASSIGN_VBO(vbo_pos)) { + GPU_vertbuf_init_with_format(vbo_pos, &format_pos); + GPU_vertbuf_data_alloc(vbo_pos, verts_len_capacity); + } + if (DRW_TEST_ASSIGN_VBO(vbo_data)) { + GPU_vertbuf_init_with_format(vbo_data, &format_data); + GPU_vertbuf_data_alloc(vbo_data, verts_len_capacity); + } + + GPUIndexBufBuilder elb_verts, *elbp_verts = nullptr; + GPUIndexBufBuilder elb_lines, *elbp_lines = nullptr; + if (DRW_TEST_ASSIGN_IBO(ibo_edit_verts_points)) { + elbp_verts = &elb_verts; + GPU_indexbuf_init(elbp_verts, GPU_PRIM_POINTS, verts_len_capacity, verts_len_capacity); + } + if (DRW_TEST_ASSIGN_IBO(ibo_edit_lines)) { + elbp_lines = &elb_lines; + GPU_indexbuf_init(elbp_lines, GPU_PRIM_LINES, edges_len_capacity, verts_len_capacity); + } + + int nu_id = 0; + for (Nurb *nu = (Nurb *)rdata->nurbs->first; nu; nu = nu->next, nu_id++) { + const BezTriple *bezt = nu->bezt; + const BPoint *bp = nu->bp; + + if (bezt) { + for (int a = 0; a < nu->pntsu; a++, bezt++) { + if (bezt->hide != 0) { + continue; + } + const bool handle_selected = BEZT_ISSEL_ANY(bezt); + + if (elbp_verts) { + GPU_indexbuf_add_point_vert(elbp_verts, vbo_len_used + 0); + GPU_indexbuf_add_point_vert(elbp_verts, vbo_len_used + 1); + GPU_indexbuf_add_point_vert(elbp_verts, vbo_len_used + 2); + } + if (elbp_lines) { + GPU_indexbuf_add_line_verts(elbp_lines, vbo_len_used + 1, vbo_len_used + 0); + GPU_indexbuf_add_line_verts(elbp_lines, vbo_len_used + 1, vbo_len_used + 2); + } + if (vbo_data) { + const uint8_t vflag[3] = { + beztriple_vflag_get(rdata, bezt->f1, bezt->h1, a, nu_id, true, handle_selected), + beztriple_vflag_get(rdata, bezt->f2, bezt->h1, a, nu_id, false, handle_selected), + beztriple_vflag_get(rdata, bezt->f3, bezt->h2, a, nu_id, true, handle_selected), + }; + for (int j = 0; j < 3; j++) { + GPU_vertbuf_attr_set(vbo_data, attr_id.data, vbo_len_used + j, &vflag[j]); + } + } + if (vbo_pos) { + for (int j = 0; j < 3; j++) { + GPU_vertbuf_attr_set(vbo_pos, attr_id.pos, vbo_len_used + j, bezt->vec[j]); + } + } + vbo_len_used += 3; + } + } + else if (bp) { + int pt_len = nu->pntsu * nu->pntsv; + for (int a = 0; a < pt_len; a++, bp++, vbo_len_used += 1) { + if (bp->hide != 0) { + continue; + } + int u = (a % nu->pntsu); + int v = (a / nu->pntsu); + /* Use indexed rendering for bezier. + * Specify all points and use indices to hide/show. */ + if (elbp_verts) { + GPU_indexbuf_add_point_vert(elbp_verts, vbo_len_used); + } + if (elbp_lines) { + const BPoint *bp_next_u = (u < (nu->pntsu - 1)) ? &nu->bp[a + 1] : nullptr; + const BPoint *bp_next_v = (v < (nu->pntsv - 1)) ? &nu->bp[a + nu->pntsu] : nullptr; + if (bp_next_u && (bp_next_u->hide == false)) { + GPU_indexbuf_add_line_verts(elbp_lines, vbo_len_used, vbo_len_used + 1); + } + if (bp_next_v && (bp_next_v->hide == false)) { + GPU_indexbuf_add_line_verts(elbp_lines, vbo_len_used, vbo_len_used + nu->pntsu); + } + } + if (vbo_data) { + uint8_t vflag = bpoint_vflag_get(rdata, bp->f1, a, nu_id, u); + GPU_vertbuf_attr_set(vbo_data, attr_id.data, vbo_len_used, &vflag); + } + if (vbo_pos) { + GPU_vertbuf_attr_set(vbo_pos, attr_id.pos, vbo_len_used, bp->vec); + } + } + } + } + + /* Resize & Finish */ + if (elbp_verts != nullptr) { + GPU_indexbuf_build_in_place(elbp_verts, ibo_edit_verts_points); + } + if (elbp_lines != nullptr) { + GPU_indexbuf_build_in_place(elbp_lines, ibo_edit_lines); + } + if (vbo_len_used != verts_len_capacity) { + if (vbo_pos != nullptr) { + GPU_vertbuf_data_resize(vbo_pos, vbo_len_used); + } + if (vbo_data != nullptr) { + GPU_vertbuf_data_resize(vbo_data, vbo_len_used); + } + } +} + +/** \} */ + +/* -------------------------------------------------------------------- */ +/** \name Public Object/Curve API + * \{ */ + +GPUBatch *DRW_curve_batch_cache_get_wire_edge(Curve *cu) +{ + CurveBatchCache *cache = curve_batch_cache_get(cu); + return DRW_batch_request(&cache->batch.curves); +} + +GPUBatch *DRW_curve_batch_cache_get_normal_edge(Curve *cu) +{ + CurveBatchCache *cache = curve_batch_cache_get(cu); + return DRW_batch_request(&cache->batch.edit_normals); +} + +GPUBatch *DRW_curve_batch_cache_get_edit_edges(Curve *cu) +{ + CurveBatchCache *cache = curve_batch_cache_get(cu); + return DRW_batch_request(&cache->batch.edit_edges); +} + +GPUBatch *DRW_curve_batch_cache_get_edit_verts(Curve *cu) +{ + CurveBatchCache *cache = curve_batch_cache_get(cu); + return DRW_batch_request(&cache->batch.edit_verts); +} + +GPUBatch *DRW_curve_batch_cache_get_triangles_with_normals(struct Curve *cu) +{ + CurveBatchCache *cache = curve_batch_cache_get(cu); + return DRW_batch_request(&cache->batch.surfaces); +} + +GPUBatch **DRW_curve_batch_cache_get_surface_shaded(struct Curve *cu, + struct GPUMaterial **gpumat_array, + uint gpumat_array_len) +{ + CurveBatchCache *cache = curve_batch_cache_get(cu); + + BLI_assert(gpumat_array_len == cache->mat_len); + + curve_cd_calc_used_gpu_layers(&cache->cd_needed, gpumat_array, gpumat_array_len); + + for (int i = 0; i < cache->mat_len; i++) { + DRW_batch_request(&cache->surf_per_mat[i]); + } + return cache->surf_per_mat; +} + +GPUVertBuf *DRW_curve_batch_cache_pos_vertbuf_get(struct Curve *cu) +{ + CurveBatchCache *cache = curve_batch_cache_get(cu); + /* Request surface to trigger the vbo filling. Otherwise it may do nothing. */ + DRW_batch_request(&cache->batch.surfaces); + + DRW_vbo_request(nullptr, &cache->ordered.loop_pos_nor); + return cache->ordered.loop_pos_nor; +} + +GPUBatch *DRW_curve_batch_cache_get_wireframes_face(Curve *cu) +{ + CurveBatchCache *cache = curve_batch_cache_get(cu); + return DRW_batch_request(&cache->batch.surfaces_edges); +} + +GPUBatch *DRW_curve_batch_cache_get_edge_detection(Curve *cu, bool *r_is_manifold) +{ + CurveBatchCache *cache = curve_batch_cache_get(cu); + /* Even if is_manifold is not correct (not updated), + * the default (not manifold) is just the worst case. */ + if (r_is_manifold) { + *r_is_manifold = cache->is_manifold; + } + return DRW_batch_request(&cache->batch.edge_detection); +} + +int DRW_curve_material_count_get(Curve *cu) +{ + return max_ii(1, cu->totcol); +} + +/** \} */ + +/* -------------------------------------------------------------------- */ +/** \name Grouped batch generation + * \{ */ + +void DRW_curve_batch_cache_create_requested(Object *ob, const struct Scene *scene) +{ + BLI_assert(ELEM(ob->type, OB_CURVE, OB_SURF, OB_FONT)); + + Curve *cu = (Curve *)ob->data; + CurveBatchCache *cache = curve_batch_cache_get(cu); + + /* Verify that all surface batches have needed attribute layers. */ + /* TODO(fclem): We could be a bit smarter here and only do it per material. */ + if ((cache->cd_used & cache->cd_needed) != cache->cd_needed) { + for (int i = 0; i < cache->mat_len; i++) { + /* We can't discard batches at this point as they have been + * referenced for drawing. Just clear them in place. */ + GPU_BATCH_CLEAR_SAFE(cache->surf_per_mat[i]); + } + + cache->cd_used |= cache->cd_needed; + cache->cd_needed = 0; + } + + /* Init batches and request VBOs & IBOs */ + if (DRW_batch_requested(cache->batch.surfaces, GPU_PRIM_TRIS)) { + DRW_vbo_request(cache->batch.surfaces, &cache->ordered.loop_pos_nor); + } + if (DRW_batch_requested(cache->batch.surfaces_edges, GPU_PRIM_LINES)) { + DRW_ibo_request(cache->batch.surfaces_edges, &cache->ibo.surfaces_lines); + DRW_vbo_request(cache->batch.surfaces_edges, &cache->ordered.pos_nor); + DRW_vbo_request(cache->batch.surfaces_edges, &cache->ordered.edge_fac); + } + if (DRW_batch_requested(cache->batch.curves, GPU_PRIM_LINE_STRIP)) { + DRW_ibo_request(cache->batch.curves, &cache->ibo.curves_lines); + DRW_vbo_request(cache->batch.curves, &cache->ordered.curves_pos); + } + if (DRW_batch_requested(cache->batch.edge_detection, GPU_PRIM_LINES_ADJ)) { + DRW_ibo_request(cache->batch.edge_detection, &cache->ibo.edges_adj_lines); + DRW_vbo_request(cache->batch.edge_detection, &cache->ordered.pos_nor); + } + + /* Edit mode */ + if (DRW_batch_requested(cache->batch.edit_edges, GPU_PRIM_LINES)) { + DRW_ibo_request(cache->batch.edit_edges, &cache->ibo.edit_lines); + DRW_vbo_request(cache->batch.edit_edges, &cache->edit.pos); + DRW_vbo_request(cache->batch.edit_edges, &cache->edit.data); + } + if (DRW_batch_requested(cache->batch.edit_verts, GPU_PRIM_POINTS)) { + DRW_ibo_request(cache->batch.edit_verts, &cache->ibo.edit_verts); + DRW_vbo_request(cache->batch.edit_verts, &cache->edit.pos); + DRW_vbo_request(cache->batch.edit_verts, &cache->edit.data); + } + if (DRW_batch_requested(cache->batch.edit_normals, GPU_PRIM_LINES)) { + DRW_vbo_request(cache->batch.edit_normals, &cache->edit.curves_nor); + } + for (int i = 0; i < cache->mat_len; i++) { + if (DRW_batch_requested(cache->surf_per_mat[i], GPU_PRIM_TRIS)) { + if (cache->mat_len > 1) { + DRW_ibo_request(cache->surf_per_mat[i], &cache->surf_per_mat_tris[i]); + } + if (cache->cd_used & CD_MASK_MLOOPUV) { + DRW_vbo_request(cache->surf_per_mat[i], &cache->ordered.loop_uv); + } + if (cache->cd_used & CD_MASK_TANGENT) { + DRW_vbo_request(cache->surf_per_mat[i], &cache->ordered.loop_tan); + } + DRW_vbo_request(cache->surf_per_mat[i], &cache->ordered.loop_pos_nor); + } + } + +#ifdef DRW_DEBUG_MESH_CACHE_REQUEST + printf("-- %s %s --\n", __func__, ob->id.name + 2); +#endif + + /* Generate MeshRenderData flags */ + int mr_flag = 0; + DRW_ADD_FLAG_FROM_VBO_REQUEST(mr_flag, cache->ordered.pos_nor, CU_DATATYPE_SURFACE); + DRW_ADD_FLAG_FROM_VBO_REQUEST(mr_flag, cache->ordered.edge_fac, CU_DATATYPE_SURFACE); + DRW_ADD_FLAG_FROM_VBO_REQUEST(mr_flag, cache->ordered.curves_pos, CU_DATATYPE_WIRE); + DRW_ADD_FLAG_FROM_VBO_REQUEST(mr_flag, cache->ordered.loop_pos_nor, CU_DATATYPE_SURFACE); + DRW_ADD_FLAG_FROM_VBO_REQUEST(mr_flag, cache->ordered.loop_uv, CU_DATATYPE_SURFACE); + DRW_ADD_FLAG_FROM_VBO_REQUEST(mr_flag, cache->ordered.loop_tan, CU_DATATYPE_SURFACE); + DRW_ADD_FLAG_FROM_IBO_REQUEST(mr_flag, cache->ibo.surfaces_tris, CU_DATATYPE_SURFACE); + DRW_ADD_FLAG_FROM_IBO_REQUEST(mr_flag, cache->ibo.surfaces_lines, CU_DATATYPE_SURFACE); + DRW_ADD_FLAG_FROM_IBO_REQUEST(mr_flag, cache->ibo.curves_lines, CU_DATATYPE_WIRE); + DRW_ADD_FLAG_FROM_IBO_REQUEST(mr_flag, cache->ibo.edges_adj_lines, CU_DATATYPE_SURFACE); + + DRW_ADD_FLAG_FROM_VBO_REQUEST(mr_flag, cache->edit.pos, CU_DATATYPE_OVERLAY); + DRW_ADD_FLAG_FROM_VBO_REQUEST(mr_flag, cache->edit.data, CU_DATATYPE_OVERLAY); + DRW_ADD_FLAG_FROM_VBO_REQUEST(mr_flag, cache->edit.curves_nor, CU_DATATYPE_NORMAL); + DRW_ADD_FLAG_FROM_VBO_REQUEST(mr_flag, cache->edit.curves_weight, CU_DATATYPE_OVERLAY); + DRW_ADD_FLAG_FROM_IBO_REQUEST(mr_flag, cache->ibo.edit_verts, CU_DATATYPE_OVERLAY); + DRW_ADD_FLAG_FROM_IBO_REQUEST(mr_flag, cache->ibo.edit_lines, CU_DATATYPE_OVERLAY); + + for (int i = 0; i < cache->mat_len; i++) { + DRW_ADD_FLAG_FROM_IBO_REQUEST(mr_flag, cache->surf_per_mat_tris[i], CU_DATATYPE_SURFACE); + } + +#ifdef DRW_DEBUG_MESH_CACHE_REQUEST + printf(" mr_flag %d\n\n", mr_flag); +#endif + + CurveRenderData *rdata = curve_render_data_create(cu, ob->runtime.curve_cache, mr_flag); + + /* DispLists */ + ListBase *lb = &rdata->ob_curve_cache->disp; + + /* Generate VBOs */ + if (DRW_vbo_requested(cache->ordered.pos_nor)) { + DRW_displist_vertbuf_create_pos_and_nor(lb, cache->ordered.pos_nor, scene); + } + if (DRW_vbo_requested(cache->ordered.edge_fac)) { + DRW_displist_vertbuf_create_wiredata(lb, cache->ordered.edge_fac); + } + if (DRW_vbo_requested(cache->ordered.curves_pos)) { + curve_create_curves_pos(rdata, cache->ordered.curves_pos); + } + + if (DRW_vbo_requested(cache->ordered.loop_pos_nor) || + DRW_vbo_requested(cache->ordered.loop_uv) || DRW_vbo_requested(cache->ordered.loop_tan)) { + DRW_displist_vertbuf_create_loop_pos_and_nor_and_uv_and_tan( + lb, cache->ordered.loop_pos_nor, cache->ordered.loop_uv, cache->ordered.loop_tan, scene); + } + + if (DRW_ibo_requested(cache->surf_per_mat_tris[0])) { + DRW_displist_indexbuf_create_triangles_loop_split_by_material( + lb, cache->surf_per_mat_tris, cache->mat_len); + } + + if (DRW_ibo_requested(cache->ibo.curves_lines)) { + curve_create_curves_lines(rdata, cache->ibo.curves_lines); + } + if (DRW_ibo_requested(cache->ibo.surfaces_tris)) { + DRW_displist_indexbuf_create_triangles_in_order(lb, cache->ibo.surfaces_tris); + } + if (DRW_ibo_requested(cache->ibo.surfaces_lines)) { + DRW_displist_indexbuf_create_lines_in_order(lb, cache->ibo.surfaces_lines); + } + if (DRW_ibo_requested(cache->ibo.edges_adj_lines)) { + DRW_displist_indexbuf_create_edges_adjacency_lines( + lb, cache->ibo.edges_adj_lines, &cache->is_manifold); + } + + if (DRW_vbo_requested(cache->edit.pos) || DRW_vbo_requested(cache->edit.data) || + DRW_ibo_requested(cache->ibo.edit_verts) || DRW_ibo_requested(cache->ibo.edit_lines)) { + curve_create_edit_data_and_handles( + rdata, cache->edit.pos, cache->edit.data, cache->ibo.edit_verts, cache->ibo.edit_lines); + } + if (DRW_vbo_requested(cache->edit.curves_nor)) { + curve_create_edit_curves_nor(rdata, cache->edit.curves_nor, scene); + } + + curve_render_data_free(rdata); + +#ifdef DEBUG + /* Make sure all requested batches have been setup. */ + for (int i = 0; i < sizeof(cache->batch) / sizeof(void *); i++) { + BLI_assert(!DRW_batch_requested(((GPUBatch **)&cache->batch)[i], (GPUPrimType)0)); + } +#endif +} + +/** \} */ |