/*
 * 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) 2006 by Blender Foundation
 * All rights reserved.
 */
/** \file RE_render_ext.h
 *  \ingroup render
 */


#ifndef __RE_RENDER_EXT_H__
#define __RE_RENDER_EXT_H__

/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
/* this include is for non-render pipeline exports (still old cruft here) */
/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */

/* called by meshtools */
struct Depsgraph;
struct ImagePool;
struct MTex;
struct Render;
struct Scene;
struct ViewLayer;

/* render_texture.c */
/* used by particle.c, effect.c, editmesh_modes.c and brush.c, returns 1 if rgb, 0 otherwise */
int externtex(
        const struct MTex *mtex, const float vec[3], float *tin, float *tr, float *tg, float *tb, float *ta,
        const int thread, struct ImagePool *pool, const bool skip_load_image, const bool texnode_preview);
void texture_rgb_blend(float in[3], const float tex[3], const float out[3], float fact, float facg, int blendtype);
float texture_value_blend(float tex, float out, float fact, float facg, int blendtype);

void RE_texture_rng_init(void);
void RE_texture_rng_exit(void);

/* imagetexture.c */
void ibuf_sample(struct ImBuf *ibuf, float fx, float fy, float dx, float dy, float result[4]);

/* pointdensity.c */
struct PointDensity;

void RE_point_density_cache(
        struct Depsgraph *depsgraph,
        struct PointDensity *pd);

void RE_point_density_minmax(
        struct Depsgraph *depsgraph,
        struct PointDensity *pd,
        float r_min[3], float r_max[3]);

void RE_point_density_sample(
        struct Depsgraph *depsgraph,
        struct PointDensity *pd,
        const int resolution,
        float *values);

void RE_point_density_free(struct PointDensity *pd);

void RE_point_density_fix_linking(void);

#endif /* __RE_RENDER_EXT_H__ */