diff options
author | Germano <germano.costa@ig.com.br> | 2017-11-16 20:12:32 +0300 |
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committer | Germano <germano.costa@ig.com.br> | 2017-11-16 20:12:32 +0300 |
commit | 88c88c4610260ef3d00420c3e9fc3c1cd56aad14 (patch) | |
tree | b9e49f253fd37c773c2098b583019e2240655885 /source/blender/draw/intern/draw_cache_impl_metaball.c | |
parent | 562da211c21bc57e35d7b2dba2f36c2472de90a2 (diff) |
Fix T51210: Draw Manager: Support for Metaball Drawing
Differential Revision: D2914
Diffstat (limited to 'source/blender/draw/intern/draw_cache_impl_metaball.c')
-rw-r--r-- | source/blender/draw/intern/draw_cache_impl_metaball.c | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/source/blender/draw/intern/draw_cache_impl_metaball.c b/source/blender/draw/intern/draw_cache_impl_metaball.c new file mode 100644 index 00000000000..cf7d2f84133 --- /dev/null +++ b/source/blender/draw/intern/draw_cache_impl_metaball.c @@ -0,0 +1,196 @@ +/* + * ***** BEGIN GPL LICENSE BLOCK ***** + * + * 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. + * + * ***** END GPL LICENSE BLOCK ***** + */ + +/** \file draw_cache_impl_metaball.c + * \ingroup draw + * + * \brief MetaBall API for render engines + */ + +#include "MEM_guardedalloc.h" + +#include "BLI_utildefines.h" + +#include "DNA_meta_types.h" +#include "DNA_object_types.h" + +#include "BKE_curve.h" +#include "BKE_mball.h" + +#include "GPU_batch.h" + +#include "draw_cache_impl.h" /* own include */ + + +static void metaball_batch_cache_clear(MetaBall *mb); + +/* ---------------------------------------------------------------------- */ +/* MetaBall Interface, indirect, partially cached access to complex data. */ + +typedef struct MetaBallRenderData { + int types; + + /* borrow from 'Object' */ + CurveCache *ob_curve_cache; +} MetaBallRenderData; + +enum { + /* Geometry */ + MBALL_DATATYPE_SURFACE = 1 << 0, +// MBALL_DATATYPE_WIRE = 1 << 1, +// MBALL_DATATYPE_SHADING = 1 << 2, +}; + +static MetaBallRenderData *metaball_render_data_create(MetaBall *mb, CurveCache *ob_curve_cache, const int types) +{ + MetaBallRenderData *rdata = MEM_callocN(sizeof(*rdata), __func__); + rdata->types = types; + rdata->ob_curve_cache = ob_curve_cache; + +/* + **TODO** + if (types & MBALL_DATATYPE_WIRE) {} + if (types & MBALL_DATATYPE_SHADING) {} +*/ + + return rdata; +} + +static void metaball_render_data_free(MetaBallRenderData *rdata) +{ + MEM_freeN(rdata); +} + +/* ---------------------------------------------------------------------- */ +/* MetaBall Gwn_Batch Cache */ + +typedef struct MetaBallBatchCache { + Gwn_Batch *batch; + + /* settings to determine if cache is invalid */ + bool is_dirty; +} MetaBallBatchCache; + +/* Gwn_Batch cache management. */ + +static bool metaball_batch_cache_valid(MetaBall *mb) +{ + MetaBallBatchCache *cache = mb->batch_cache; + + if (cache == NULL) { + return false; + } + + return cache->is_dirty == false; +} + +static void metaball_batch_cache_init(MetaBall *mb) +{ + MetaBallBatchCache *cache = mb->batch_cache; + + if (!cache) { + cache = mb->batch_cache = MEM_mallocN(sizeof(*cache), __func__); + } + cache->batch = NULL; + cache->is_dirty = false; +} + +static MetaBallBatchCache *metaball_batch_cache_get(MetaBall *mb) +{ + if (!metaball_batch_cache_valid(mb)) { + metaball_batch_cache_clear(mb); + metaball_batch_cache_init(mb); + } + return mb->batch_cache; +} + +void DRW_mball_batch_cache_dirty(MetaBall *mb, int mode) +{ + MetaBallBatchCache *cache = mb->batch_cache; + if (cache == NULL) { + return; + } + switch (mode) { + case BKE_MBALL_BATCH_DIRTY_ALL: + cache->is_dirty = true; + break; + default: + BLI_assert(0); + } +} + +static void metaball_batch_cache_clear(MetaBall *mb) +{ + MetaBallBatchCache *cache = mb->batch_cache; + if (!cache) { + return; + } + + GWN_BATCH_DISCARD_SAFE(cache->batch); +} + +void DRW_mball_batch_cache_free(MetaBall *mb) +{ + metaball_batch_cache_clear(mb); + MEM_SAFE_FREE(mb->batch_cache); +} + +/* -------------------------------------------------------------------- */ + +/** \name Private MetaBall Cache API + * \{ */ + +/* Gwn_Batch cache usage. */ + +static Gwn_Batch *metaball_batch_cache_get_pos_and_normals(MetaBallRenderData *rdata, MetaBallBatchCache *cache) +{ + BLI_assert(rdata->types & MBALL_DATATYPE_SURFACE); + if (cache->batch == NULL) { + cache->batch = BLI_displist_batch_calc_surface(&rdata->ob_curve_cache->disp); + } + return cache->batch; +} + +/** \} */ + +/* -------------------------------------------------------------------- */ + +/** \name Public Object/MetaBall API + * \{ */ + +Gwn_Batch *DRW_metaball_batch_cache_get_triangles_with_normals(Object *ob) +{ + if (!BKE_mball_is_basis(ob)) + return NULL; + + MetaBall *mb = ob->data; + MetaBallBatchCache *cache = metaball_batch_cache_get(mb); + + if (cache->batch == NULL) { + MetaBallRenderData *rdata = metaball_render_data_create(mb, ob->curve_cache, MBALL_DATATYPE_SURFACE); + metaball_batch_cache_get_pos_and_normals(rdata, cache); + metaball_render_data_free(rdata); + } + + return cache->batch; +} |