From 8fcf774167a2ea52e63771655f6dd5eefb4ff7ee Mon Sep 17 00:00:00 2001 From: Bastien Montagne Date: Sat, 26 Mar 2016 17:41:56 +0100 Subject: [PATCH] Fix T47935: Hair particles; The display percentage parameter breaks after a render is done. Follow same logic in `psys_render_restore` as in `psys_render_set` - if hair and display percentage is not 100%, we have to recompute particles... With regular 'emitter' particles just hiding some is fine (though using random here will not give a precise proportion...). --- source/blender/blenkernel/intern/particle.c | 18 ++++++++++++------ 1 file changed, 12 insertions(+), 6 deletions(-) diff --git a/source/blender/blenkernel/intern/particle.c b/source/blender/blenkernel/intern/particle.c index 66d6252c273..081244c5c6b 100644 --- a/source/blender/blenkernel/intern/particle.c +++ b/source/blender/blenkernel/intern/particle.c @@ -720,13 +720,19 @@ void psys_render_restore(Object *ob, ParticleSystem *psys) disp = psys_get_current_display_percentage(psys); if (disp != render_disp) { - PARTICLE_P; + /* Hair can and has to be recalculated if everything isn't displayed. */ + if (psys->part->type == PART_HAIR) { + psys->recalc |= PSYS_RECALC_RESET; + } + else { + PARTICLE_P; - LOOP_PARTICLES { - if (psys_frand(psys, p) > disp) - pa->flag |= PARS_NO_DISP; - else - pa->flag &= ~PARS_NO_DISP; + LOOP_PARTICLES { + if (psys_frand(psys, p) > disp) + pa->flag |= PARS_NO_DISP; + else + pa->flag &= ~PARS_NO_DISP; + } } } }