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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2019 Blender Foundation. */
/** \file
* \ingroup draw_engine
*
* Engine for drawing a selection map where the pixels indicate the selection indices.
*/
#include "BKE_editmesh.h"
#include "BKE_mesh.h"
#include "BKE_object.h"
#include "DNA_mesh_types.h"
#include "DNA_scene_types.h"
#include "ED_view3d.h"
#include "DEG_depsgraph.h"
#include "DEG_depsgraph_query.h"
#include "DRW_select_buffer.h"
#include "draw_cache_impl.h"
#include "select_private.h"
/* -------------------------------------------------------------------- */
/** \name Draw Utilities
* \{ */
void select_id_object_min_max(Object *obj, float r_min[3], float r_max[3])
{
BoundBox *bb;
BMEditMesh *em = BKE_editmesh_from_object(obj);
if (em) {
bb = BKE_editmesh_cage_boundbox_get(obj, em);
}
else {
bb = BKE_object_boundbox_get(obj);
}
copy_v3_v3(r_min, bb->vec[0]);
copy_v3_v3(r_max, bb->vec[6]);
}
short select_id_get_object_select_mode(Scene *scene, Object *ob)
{
short r_select_mode = 0;
if (ob->mode & (OB_MODE_WEIGHT_PAINT | OB_MODE_VERTEX_PAINT | OB_MODE_TEXTURE_PAINT)) {
/* In order to sample flat colors for vertex weights / texture-paint / vertex-paint
* we need to be in SCE_SELECT_FACE mode so select_cache_init() correctly sets up
* a shgroup with select_id_flat.
* Note this is not working correctly for vertex-paint (yet), but has been discussed
* in T66645 and there is a solution by @mano-wii in P1032.
* So OB_MODE_VERTEX_PAINT is already included here [required for P1032 I guess]. */
Mesh *me_orig = DEG_get_original_object(ob)->data;
if (me_orig->editflag & ME_EDIT_PAINT_VERT_SEL) {
r_select_mode = SCE_SELECT_VERTEX;
}
else {
r_select_mode = SCE_SELECT_FACE;
}
}
else {
r_select_mode = scene->toolsettings->selectmode;
}
return r_select_mode;
}
static bool check_ob_drawface_dot(short select_mode, const View3D *v3d, eDrawType dt)
{
if (select_mode & SCE_SELECT_FACE) {
if ((dt < OB_SOLID) || XRAY_FLAG_ENABLED(v3d)) {
return true;
}
if (v3d->overlay.edit_flag & V3D_OVERLAY_EDIT_FACE_DOT) {
return true;
}
}
return false;
}
static void draw_select_id_edit_mesh(SELECTID_StorageList *stl,
Object *ob,
short select_mode,
bool draw_facedot,
uint initial_offset,
uint *r_vert_offset,
uint *r_edge_offset,
uint *r_face_offset)
{
Mesh *me = ob->data;
BMEditMesh *em = me->edit_mesh;
BM_mesh_elem_table_ensure(em->bm, BM_VERT | BM_EDGE | BM_FACE);
if (select_mode & SCE_SELECT_FACE) {
struct GPUBatch *geom_faces = DRW_mesh_batch_cache_get_triangles_with_select_id(me);
DRWShadingGroup *face_shgrp = DRW_shgroup_create_sub(stl->g_data->shgrp_face_flat);
DRW_shgroup_uniform_int_copy(face_shgrp, "offset", *(int *)&initial_offset);
DRW_shgroup_call_no_cull(face_shgrp, geom_faces, ob);
if (draw_facedot) {
struct GPUBatch *geom_facedots = DRW_mesh_batch_cache_get_facedots_with_select_id(me);
DRW_shgroup_call_no_cull(face_shgrp, geom_facedots, ob);
}
*r_face_offset = initial_offset + em->bm->totface;
}
else {
if (ob->dt >= OB_SOLID) {
#ifdef USE_CAGE_OCCLUSION
struct GPUBatch *geom_faces = DRW_mesh_batch_cache_get_triangles_with_select_id(me);
#else
struct GPUBatch *geom_faces = DRW_mesh_batch_cache_get_surface(me);
#endif
DRWShadingGroup *face_shgrp = stl->g_data->shgrp_face_unif;
DRW_shgroup_call_no_cull(face_shgrp, geom_faces, ob);
}
*r_face_offset = initial_offset;
}
/* Unlike faces, only draw edges if edge select mode. */
if (select_mode & SCE_SELECT_EDGE) {
struct GPUBatch *geom_edges = DRW_mesh_batch_cache_get_edges_with_select_id(me);
DRWShadingGroup *edge_shgrp = DRW_shgroup_create_sub(stl->g_data->shgrp_edge);
DRW_shgroup_uniform_int_copy(edge_shgrp, "offset", *(int *)r_face_offset);
DRW_shgroup_call_no_cull(edge_shgrp, geom_edges, ob);
*r_edge_offset = *r_face_offset + em->bm->totedge;
}
else {
/* Note that `r_vert_offset` is calculated from `r_edge_offset`.
* Otherwise the first vertex is never selected, see: T53512. */
*r_edge_offset = *r_face_offset;
}
/* Unlike faces, only verts if vert select mode. */
if (select_mode & SCE_SELECT_VERTEX) {
struct GPUBatch *geom_verts = DRW_mesh_batch_cache_get_verts_with_select_id(me);
DRWShadingGroup *vert_shgrp = DRW_shgroup_create_sub(stl->g_data->shgrp_vert);
DRW_shgroup_uniform_int_copy(vert_shgrp, "offset", *(int *)r_edge_offset);
DRW_shgroup_call_no_cull(vert_shgrp, geom_verts, ob);
*r_vert_offset = *r_edge_offset + em->bm->totvert;
}
else {
*r_vert_offset = *r_edge_offset;
}
}
static void draw_select_id_mesh(SELECTID_StorageList *stl,
Object *ob,
short select_mode,
uint initial_offset,
uint *r_vert_offset,
uint *r_edge_offset,
uint *r_face_offset)
{
Mesh *me = ob->data;
struct GPUBatch *geom_faces = DRW_mesh_batch_cache_get_triangles_with_select_id(me);
DRWShadingGroup *face_shgrp;
if (select_mode & SCE_SELECT_FACE) {
face_shgrp = DRW_shgroup_create_sub(stl->g_data->shgrp_face_flat);
DRW_shgroup_uniform_int_copy(face_shgrp, "offset", *(int *)&initial_offset);
*r_face_offset = initial_offset + me->totpoly;
}
else {
/* Only draw faces to mask out verts, we don't want their selection ID's. */
face_shgrp = stl->g_data->shgrp_face_unif;
*r_face_offset = initial_offset;
}
DRW_shgroup_call_no_cull(face_shgrp, geom_faces, ob);
if (select_mode & SCE_SELECT_EDGE) {
struct GPUBatch *geom_edges = DRW_mesh_batch_cache_get_edges_with_select_id(me);
DRWShadingGroup *edge_shgrp = DRW_shgroup_create_sub(stl->g_data->shgrp_edge);
DRW_shgroup_uniform_int_copy(edge_shgrp, "offset", *(int *)r_face_offset);
DRW_shgroup_call_no_cull(edge_shgrp, geom_edges, ob);
*r_edge_offset = *r_face_offset + me->totedge;
}
else {
*r_edge_offset = *r_face_offset;
}
if (select_mode & SCE_SELECT_VERTEX) {
struct GPUBatch *geom_verts = DRW_mesh_batch_cache_get_verts_with_select_id(me);
DRWShadingGroup *vert_shgrp = DRW_shgroup_create_sub(stl->g_data->shgrp_vert);
DRW_shgroup_uniform_int_copy(vert_shgrp, "offset", *r_edge_offset);
DRW_shgroup_call_no_cull(vert_shgrp, geom_verts, ob);
*r_vert_offset = *r_edge_offset + me->totvert;
}
else {
*r_vert_offset = *r_edge_offset;
}
}
void select_id_draw_object(void *vedata,
View3D *v3d,
Object *ob,
short select_mode,
uint initial_offset,
uint *r_vert_offset,
uint *r_edge_offset,
uint *r_face_offset)
{
SELECTID_StorageList *stl = ((SELECTID_Data *)vedata)->stl;
BLI_assert(initial_offset > 0);
switch (ob->type) {
case OB_MESH:
if (ob->mode & OB_MODE_EDIT) {
bool draw_facedot = check_ob_drawface_dot(select_mode, v3d, ob->dt);
draw_select_id_edit_mesh(stl,
ob,
select_mode,
draw_facedot,
initial_offset,
r_vert_offset,
r_edge_offset,
r_face_offset);
}
else {
draw_select_id_mesh(
stl, ob, select_mode, initial_offset, r_vert_offset, r_edge_offset, r_face_offset);
}
break;
case OB_CURVES_LEGACY:
case OB_SURF:
break;
}
}
/** \} */
#undef SELECT_ENGINE
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