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/*
* ***** 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.
*
* Contributor(s): Blender Foundation, Mike Erwin, Dalai Felinto
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file draw_hair_private.h
* \ingroup draw
*/
#ifndef __DRAW_HAIR_PRIVATE_H__
#define __DRAW_HAIR_PRIVATE_H__
#define MAX_LAYER_NAME_CT 3 /* u0123456789, u, a0123456789 */
#define MAX_LAYER_NAME_LEN DECIMAL_DIGITS_BOUND(uint) + 2
#define MAX_THICKRES 2 /* see eHairType */
#define MAX_HAIR_SUBDIV 4 /* see hair_subdiv rna */
struct Object;
struct ParticleSystem;
struct ModifierData;
struct ParticleHairCache;
typedef struct ParticleHairFinalCache {
/* Output of the subdivision stage: vertex buff sized to subdiv level. */
Gwn_VertBuf *proc_buf;
GPUTexture *proc_tex;
/* Just contains a huge index buffer used to draw the final hair. */
Gwn_Batch *proc_hairs[MAX_THICKRES];
int strands_res; /* points per hair, at least 2 */
} ParticleHairFinalCache;
typedef struct ParticleHairCache {
Gwn_VertBuf *pos;
Gwn_IndexBuf *indices;
Gwn_Batch *hairs;
/* Hair Procedural display: Interpolation is done on the GPU. */
Gwn_VertBuf *proc_point_buf; /* Input control points */
GPUTexture *point_tex;
Gwn_VertBuf *proc_strand_buf; /* Infos of control points strands (segment count and base index) */
GPUTexture *strand_tex;
Gwn_VertBuf *proc_uv_buf[MAX_MTFACE];
GPUTexture *uv_tex[MAX_MTFACE];
char uv_layer_names[MAX_MTFACE][MAX_LAYER_NAME_CT][MAX_LAYER_NAME_LEN];
Gwn_VertBuf *proc_col_buf[MAX_MCOL];
GPUTexture *col_tex[MAX_MCOL];
char col_layer_names[MAX_MCOL][MAX_LAYER_NAME_CT][MAX_LAYER_NAME_LEN];
int num_uv_layers;
int num_col_layers;
ParticleHairFinalCache final[MAX_HAIR_SUBDIV];
int strands_len;
int elems_len;
int point_len;
} ParticleHairCache;
bool particles_ensure_procedural_data(
struct Object *object,
struct ParticleSystem *psys,
struct ModifierData *md,
struct ParticleHairCache **r_hair_cache,
int subdiv,
int thickness_res);
#endif /* __DRAW_HAIR_PRIVATE_H__ */
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