Commit: d4ac58d04989e8c2e1951a55519cfba53011d494
Author: Lukas Tönne
Date: Wed Mar 25 18:34:52 2015 +0100
Branches: master
https://developer.blender.org/rBd4ac58d04989e8c2e1951a55519cfba53011d494
Fix T43694, by Krzysztof Rećko (chrisr), reviewed in D1177.
Added some guards to prevent clumping to non existing particles. Also, adjusted
threaded child path evaluation, so each child is evaluated once - previously
virtual parents were done twice.
===================================================================
M source/blender/blenkernel/BKE_particle.h
M source/blender/blenkernel/intern/particle.c
M source/blender/blenkernel/intern/particle_distribute.c
M source/blender/blenkernel/intern/particle_system.c
===================================================================
diff --git a/source/blender/blenkernel/BKE_particle.h
b/source/blender/blenkernel/BKE_particle.h
index 0f1389b..619c061 100644
--- a/source/blender/blenkernel/BKE_particle.h
+++ b/source/blender/blenkernel/BKE_particle.h
@@ -361,7 +361,7 @@ void psys_get_dupli_path_transform(struct
ParticleSimulationData *sim, struct Pa
void psys_thread_context_init(struct ParticleThreadContext *ctx, struct
ParticleSimulationData *sim);
void psys_thread_context_free(struct ParticleThreadContext *ctx);
-void psys_tasks_create(struct ParticleThreadContext *ctx, int totpart, struct
ParticleTask **r_tasks, int *r_numtasks);
+void psys_tasks_create(struct ParticleThreadContext *ctx, int startpart, int
endpart, struct ParticleTask **r_tasks, int *r_numtasks);
void psys_tasks_free(struct ParticleTask *tasks, int numtasks);
void psys_make_billboard(ParticleBillboardData *bb, float xvec[3], float
yvec[3], float zvec[3], float center[3]);
diff --git a/source/blender/blenkernel/intern/particle.c
b/source/blender/blenkernel/intern/particle.c
index 291efd0..5d553f5 100644
--- a/source/blender/blenkernel/intern/particle.c
+++ b/source/blender/blenkernel/intern/particle.c
@@ -103,6 +103,8 @@ void psys_init_rng(void)
static void get_child_modifier_parameters(ParticleSettings *part,
ParticleThreadContext *ctx,
ChildParticle *cpa, short cpa_from,
int cpa_num, float *cpa_fuv, float *orco, ParticleTexture *ptex);
+static void get_cpa_texture(DerivedMesh *dm, ParticleSystem *psys,
ParticleSettings *part, ParticleData *par,
+ int child_index, int
face_index, const float fw[4], float *orco, ParticleTexture *ptex, int event,
float cfra);
extern void do_child_modifiers(ParticleSimulationData *sim,
ParticleTexture *ptex, const float par_co[3],
const float par_vel[3], const float par_rot[4], const float par_orco[3],
ChildParticle *cpa, const float orco[3], float
mat[4][4], ParticleKey *state, float t);
@@ -1943,9 +1945,11 @@ float *psys_cache_vgroup(DerivedMesh *dm, ParticleSystem
*psys, int vgroup)
}
void psys_find_parents(ParticleSimulationData *sim)
{
+ ParticleSystem *psys = sim->psys;
ParticleSettings *part = sim->psys->part;
KDTree *tree;
ChildParticle *cpa;
+ ParticleTexture ptex;
int p, totparent, totchild = sim->psys->totchild;
float co[3], orco[3];
int from = PART_FROM_FACE;
@@ -1963,7 +1967,13 @@ void psys_find_parents(ParticleSimulationData *sim)
for (p = 0, cpa = sim->psys->child; p < totparent; p++, cpa++) {
psys_particle_on_emitter(sim->psmd, from, cpa->num,
DMCACHE_ISCHILD, cpa->fuv, cpa->foffset, co, 0, 0, 0, orco, 0);
- BLI_kdtree_insert(tree, p, orco);
+
+ /* Check if particle doesn't exist because of texture
influence. Insert only existing particles into kdtree. */
+ get_cpa_texture(sim->psmd->dm, psys, part, psys->particles +
cpa->pa[0], p, cpa->num, cpa->fuv, orco, &ptex, PAMAP_DENS | PAMAP_CHILD,
psys->cfra);
+
+ if (ptex.exist >= psys_frand(psys, p + 24)) {
+ BLI_kdtree_insert(tree, p, orco);
+ }
}
BLI_kdtree_balance(tree);
@@ -2273,7 +2283,7 @@ static void psys_thread_create_path(ParticleTask *task,
struct ChildParticle *cp
ParticleCacheKey *par = NULL;
float par_co[3];
float par_orco[3];
-
+
if (ctx->totparent) {
if (i >= ctx->totparent) {
pa = &psys->particles[cpa->parent];
@@ -2284,6 +2294,16 @@ static void psys_thread_create_path(ParticleTask *task,
struct ChildParticle *cp
else if (cpa->parent >= 0) {
pa = &psys->particles[cpa->parent];
par = pcache[cpa->parent];
+
+ /* If particle is unexisting, try to pick a viable
parent from particles used for interpolation. */
+ for (k = 0; k < 4 && pa && (pa->flag & PARS_UNEXIST);
k++) {
+ if (cpa->pa[k] >= 0) {
+ pa = &psys->particles[cpa->pa[k]];
+ par = pcache[cpa->pa[k]];
+ }
+ }
+
+ if (pa->flag & PARS_UNEXIST) pa = NULL;
}
if (pa) {
@@ -2353,7 +2373,7 @@ void psys_cache_child_paths(ParticleSimulationData *sim,
float cfra, int editupd
/* cache parent paths */
ctx.parent_pass = 1;
- psys_tasks_create(&ctx, totparent, &tasks_parent, &numtasks_parent);
+ psys_tasks_create(&ctx, 0, totparent, &tasks_parent, &numtasks_parent);
for (i = 0; i < numtasks_parent; ++i) {
ParticleTask *task = &tasks_parent[i];
@@ -2364,7 +2384,7 @@ void psys_cache_child_paths(ParticleSimulationData *sim,
float cfra, int editupd
/* cache child paths */
ctx.parent_pass = 0;
- psys_tasks_create(&ctx, totchild, &tasks_child, &numtasks_child);
+ psys_tasks_create(&ctx, totparent, totchild, &tasks_child,
&numtasks_child);
for (i = 0; i < numtasks_child; ++i) {
ParticleTask *task = &tasks_child[i];
diff --git a/source/blender/blenkernel/intern/particle_distribute.c
b/source/blender/blenkernel/intern/particle_distribute.c
index 245c243..1429d3b 100644
--- a/source/blender/blenkernel/intern/particle_distribute.c
+++ b/source/blender/blenkernel/intern/particle_distribute.c
@@ -1121,7 +1121,7 @@ static void
distribute_particles_on_dm(ParticleSimulationData *sim, int from)
task_pool = BLI_task_pool_create(task_scheduler, &ctx);
totpart = (from == PART_FROM_CHILD ? sim->psys->totchild :
sim->psys->totpart);
- psys_tasks_create(&ctx, totpart, &tasks, &numtasks);
+ psys_tasks_create(&ctx, 0, totpart, &tasks, &numtasks);
for (i = 0; i < numtasks; ++i) {
ParticleTask *task = &tasks[i];
diff --git a/source/blender/blenkernel/intern/particle_system.c
b/source/blender/blenkernel/intern/particle_system.c
index b7ebcfa..5a263e2 100644
--- a/source/blender/blenkernel/intern/particle_system.c
+++ b/source/blender/blenkernel/intern/particle_system.c
@@ -448,24 +448,24 @@ BLI_INLINE int ceil_ii(int a, int b)
return (a + b - 1) / b;
}
-void psys_tasks_create(ParticleThreadContext *ctx, int totpart, ParticleTask
**r_tasks, int *r_numtasks)
+void psys_tasks_create(ParticleThreadContext *ctx, int startpart, int endpart,
ParticleTask **r_tasks, int *r_numtasks)
{
ParticleTask *tasks;
- int numtasks = ceil_ii(totpart, MAX_PARTICLES_PER_TASK);
- float particles_per_task = (float)totpart / (float)numtasks, p, pnext;
+ int numtasks = ceil_ii((endpart - startpart), MAX_PARTICLES_PER_TASK);
+ float particles_per_task = (float)(endpart - startpart) /
(float)numtasks, p, pnext;
int i;
tasks = MEM_callocN(sizeof(ParticleTask) * numtasks, "ParticleThread");
*r_numtasks = numtasks;
*r_tasks = tasks;
- p = 0.0f;
+ p = (float)startpart;
for (i = 0; i < numtasks; i++, p = pnext) {
pnext = p + particles_per_task;
tasks[i].ctx = ctx;
tasks[i].begin = (int)p;
- tasks[i].end = min_ii((int)pnext, totpart);
+ tasks[i].end = min_ii((int)pnext, endpart);
}
}
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