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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2021 Blender Foundation.
*/
/** \file
* \ingroup eevee
*
* Structures to identify unique data blocks. The keys are unique so we are able to
* match ids across frame updates.
*/
#pragma once
#include "BKE_duplilist.h"
#include "BLI_ghash.h"
#include "BLI_map.hh"
#include "DNA_object_types.h"
#include "DRW_render.h"
#include "GPU_material.h"
#include "eevee_shader_shared.hh"
namespace blender::eevee {
class Instance;
/* -------------------------------------------------------------------- */
/** \name ObjectKey
*
* Unique key to identify each object in the hash-map.
* Note that we get a unique key for each object component.
* \{ */
struct ObjectKey {
/** Hash value of the key. */
uint64_t hash_value;
/** Original Object or source object for duplis. */
Object *ob;
/** Original Parent object for duplis. */
Object *parent;
/** Dupli objects recursive unique identifier */
int id[MAX_DUPLI_RECUR];
/** If object uses particle system hair. */
bool use_particle_hair;
#ifdef DEBUG
char name[64];
#endif
ObjectKey() : ob(nullptr), parent(nullptr){};
ObjectKey(Object *ob_, Object *parent_, int id_[MAX_DUPLI_RECUR], bool use_particle_hair_)
: ob(ob_), parent(parent_), use_particle_hair(use_particle_hair_)
{
if (id_) {
memcpy(id, id_, sizeof(id));
}
else {
memset(id, 0, sizeof(id));
}
/* Compute hash on creation so we avoid the cost of it for every sync. */
hash_value = BLI_ghashutil_ptrhash(ob);
hash_value = BLI_ghashutil_combine_hash(hash_value, BLI_ghashutil_ptrhash(parent));
for (int i = 0; i < MAX_DUPLI_RECUR; i++) {
if (id[i] != 0) {
hash_value = BLI_ghashutil_combine_hash(hash_value, BLI_ghashutil_inthash(id[i]));
}
else {
break;
}
}
#ifdef DEBUG
STRNCPY(name, ob->id.name);
#endif
}
ObjectKey(Object *ob, DupliObject *dupli, Object *parent)
: ObjectKey(ob, parent, dupli ? dupli->persistent_id : nullptr, false){};
ObjectKey(Object *ob)
: ObjectKey(ob, DRW_object_get_dupli(ob), DRW_object_get_dupli_parent(ob)){};
uint64_t hash() const
{
return hash_value;
}
bool operator<(const ObjectKey &k) const
{
if (ob != k.ob) {
return (ob < k.ob);
}
if (parent != k.parent) {
return (parent < k.parent);
}
if (use_particle_hair != k.use_particle_hair) {
return (use_particle_hair < k.use_particle_hair);
}
return memcmp(id, k.id, sizeof(id)) < 0;
}
bool operator==(const ObjectKey &k) const
{
if (ob != k.ob) {
return false;
}
if (parent != k.parent) {
return false;
}
if (use_particle_hair != k.use_particle_hair) {
return false;
}
return memcmp(id, k.id, sizeof(id)) == 0;
}
};
/** \} */
/* -------------------------------------------------------------------- */
/** \name Sync Module
*
* \{ */
struct ObjectHandle : public DrawData {
ObjectKey object_key;
void reset_recalc_flag()
{
if (recalc != 0) {
recalc = 0;
}
}
};
struct WorldHandle : public DrawData {
void reset_recalc_flag()
{
if (recalc != 0) {
recalc = 0;
}
}
};
class SyncModule {
private:
Instance &inst_;
public:
SyncModule(Instance &inst) : inst_(inst){};
~SyncModule(){};
ObjectHandle &sync_object(Object *ob);
WorldHandle &sync_world(::World *world);
void sync_mesh(Object *ob,
ObjectHandle &ob_handle,
ResourceHandle res_handle,
const ObjectRef &ob_ref);
void sync_gpencil(Object *ob, ObjectHandle &ob_handle, ResourceHandle res_handle);
void sync_curves(Object *ob,
ObjectHandle &ob_handle,
ResourceHandle res_handle,
ModifierData *modifier_data = nullptr);
};
/** \} */
} // namespace blender::eevee
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