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blender/intern/mantaflow/extern/manta_fluid_API.h
Brecht Van Lommel c8acb6dd6c Smoke: put density/color in separate textures, fixes for workbench shader 
This is more in line with standard grids and means we don't have to make
many special exceptions in the upcoming change for arbitrary number of volume
grids support in Eevee.

The workbench shader was also changed to fix bugs where squared density was
used, and the smoke color would affect the density so that black smoke would
be invisible. This can change the look of smoke in workbench significantly.

When using the color grid when smoke has a constant color, the color grid
will no longer be premultiplied by the density. If the color is constant
we want to be able not to store a grid at all. This breaks one test for
Cycles and Eevee, but the setup in that test using a color without density
does not make sense. It suffers from artifacts since the unpremultiplied
color grid by itself will not have smooth boundaries.

Differential Revision: https://developer.blender.org/D6951
2020-03-11 14:42:46 +01:00

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/*
* 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) 2016 Blender Foundation.
* All rights reserved.
*/
/** \file
* \ingroup mantaflow
*/
#ifndef MANTA_API_H
#define MANTA_API_H
#ifdef __cplusplus
extern "C" {
#endif
struct MANTA;
/* Fluid functions */
struct MANTA *manta_init(int *res, struct FluidModifierData *mmd);
void manta_free(struct MANTA *fluid);
void manta_ensure_obstacle(struct MANTA *fluid, struct FluidModifierData *mmd);
void manta_ensure_guiding(struct MANTA *fluid, struct FluidModifierData *mmd);
void manta_ensure_invelocity(struct MANTA *fluid, struct FluidModifierData *mmd);
void manta_ensure_outflow(struct MANTA *fluid, struct FluidModifierData *mmd);
int manta_write_config(struct MANTA *fluid, struct FluidModifierData *mmd, int framenr);
int manta_write_data(struct MANTA *fluid, struct FluidModifierData *mmd, int framenr);
int manta_read_config(struct MANTA *fluid, struct FluidModifierData *mmd, int framenr);
int manta_read_data(struct MANTA *fluid, struct FluidModifierData *mmd, int framenr);
int manta_read_noise(struct MANTA *fluid, struct FluidModifierData *mmd, int framenr);
int manta_read_mesh(struct MANTA *fluid, struct FluidModifierData *mmd, int framenr);
int manta_read_particles(struct MANTA *fluid, struct FluidModifierData *mmd, int framenr);
int manta_read_guiding(struct MANTA *fluid,
struct FluidModifierData *mmd,
int framenr,
bool sourceDomain);
int manta_update_liquid_structures(struct MANTA *fluid,
struct FluidModifierData *mmd,
int framenr);
int manta_update_mesh_structures(struct MANTA *fluid, struct FluidModifierData *mmd, int framenr);
int manta_update_particle_structures(struct MANTA *fluid,
struct FluidModifierData *mmd,
int framenr);
int manta_update_smoke_structures(struct MANTA *fluid, struct FluidModifierData *mmd, int framenr);
int manta_update_noise_structures(struct MANTA *fluid, struct FluidModifierData *mmd, int framenr);
int manta_bake_data(struct MANTA *fluid, struct FluidModifierData *mmd, int framenr);
int manta_bake_noise(struct MANTA *fluid, struct FluidModifierData *mmd, int framenr);
int manta_bake_mesh(struct MANTA *fluid, struct FluidModifierData *mmd, int framenr);
int manta_bake_particles(struct MANTA *fluid, struct FluidModifierData *mmd, int framenr);
int manta_bake_guiding(struct MANTA *fluid, struct FluidModifierData *mmd, int framenr);
void manta_update_variables(struct MANTA *fluid, struct FluidModifierData *mmd);
int manta_get_frame(struct MANTA *fluid);
float manta_get_timestep(struct MANTA *fluid);
void manta_adapt_timestep(struct MANTA *fluid);
bool manta_needs_realloc(struct MANTA *fluid, struct FluidModifierData *mmd);
/* Fluid accessors */
size_t manta_get_index(int x, int max_x, int y, int max_y, int z /*, int max_z */);
size_t manta_get_index2d(int x, int max_x, int y /*, int max_y, int z, int max_z */);
float *manta_get_velocity_x(struct MANTA *fluid);
float *manta_get_velocity_y(struct MANTA *fluid);
float *manta_get_velocity_z(struct MANTA *fluid);
float *manta_get_ob_velocity_x(struct MANTA *fluid);
float *manta_get_ob_velocity_y(struct MANTA *fluid);
float *manta_get_ob_velocity_z(struct MANTA *fluid);
float *manta_get_guide_velocity_x(struct MANTA *fluid);
float *manta_get_guide_velocity_y(struct MANTA *fluid);
float *manta_get_guide_velocity_z(struct MANTA *fluid);
float *manta_get_in_velocity_x(struct MANTA *fluid);
float *manta_get_in_velocity_y(struct MANTA *fluid);
float *manta_get_in_velocity_z(struct MANTA *fluid);
float *manta_get_force_x(struct MANTA *fluid);
float *manta_get_force_y(struct MANTA *fluid);
float *manta_get_force_z(struct MANTA *fluid);
float *manta_get_phiguide_in(struct MANTA *fluid);
float *manta_get_num_obstacle(struct MANTA *fluid);
float *manta_get_num_guide(struct MANTA *fluid);
int manta_get_res_x(struct MANTA *fluid);
int manta_get_res_y(struct MANTA *fluid);
int manta_get_res_z(struct MANTA *fluid);
float *manta_get_phi_in(struct MANTA *fluid);
float *manta_get_phistatic_in(struct MANTA *fluid);
float *manta_get_phiobs_in(struct MANTA *fluid);
float *manta_get_phiobsstatic_in(struct MANTA *fluid);
float *manta_get_phiout_in(struct MANTA *fluid);
/* Smoke functions */
void manta_smoke_export_script(struct MANTA *smoke, struct FluidModifierData *mmd);
void manta_smoke_export(struct MANTA *smoke,
float *dt,
float *dx,
float **dens,
float **react,
float **flame,
float **fuel,
float **heat,
float **vx,
float **vy,
float **vz,
float **r,
float **g,
float **b,
int **flags,
float **shadow);
void manta_smoke_turbulence_export(struct MANTA *smoke,
float **dens,
float **react,
float **flame,
float **fuel,
float **r,
float **g,
float **b,
float **tcu,
float **tcv,
float **tcw,
float **tcu2,
float **tcv2,
float **tcw2);
void manta_smoke_get_rgba(struct MANTA *smoke, float *data, int sequential);
void manta_smoke_turbulence_get_rgba(struct MANTA *smoke, float *data, int sequential);
void manta_smoke_get_rgba_fixed_color(struct MANTA *smoke,
float color[3],
float *data,
int sequential);
void manta_smoke_turbulence_get_rgba_fixed_color(struct MANTA *smoke,
float color[3],
float *data,
int sequential);
void manta_smoke_ensure_heat(struct MANTA *smoke, struct FluidModifierData *mmd);
void manta_smoke_ensure_fire(struct MANTA *smoke, struct FluidModifierData *mmd);
void manta_smoke_ensure_colors(struct MANTA *smoke, struct FluidModifierData *mmd);
/* Smoke accessors */
float *manta_smoke_get_density(struct MANTA *smoke);
float *manta_smoke_get_fuel(struct MANTA *smoke);
float *manta_smoke_get_react(struct MANTA *smoke);
float *manta_smoke_get_heat(struct MANTA *smoke);
float *manta_smoke_get_flame(struct MANTA *smoke);
float *manta_smoke_get_shadow(struct MANTA *fluid);
float *manta_smoke_get_color_r(struct MANTA *smoke);
float *manta_smoke_get_color_g(struct MANTA *smoke);
float *manta_smoke_get_color_b(struct MANTA *smoke);
int *manta_smoke_get_flags(struct MANTA *smoke);
float *manta_smoke_get_density_in(struct MANTA *smoke);
float *manta_smoke_get_heat_in(struct MANTA *smoke);
float *manta_smoke_get_color_r_in(struct MANTA *smoke);
float *manta_smoke_get_color_g_in(struct MANTA *smoke);
float *manta_smoke_get_color_b_in(struct MANTA *smoke);
float *manta_smoke_get_fuel_in(struct MANTA *smoke);
float *manta_smoke_get_react_in(struct MANTA *smoke);
float *manta_smoke_get_emission_in(struct MANTA *smoke);
int manta_smoke_has_heat(struct MANTA *smoke);
int manta_smoke_has_fuel(struct MANTA *smoke);
int manta_smoke_has_colors(struct MANTA *smoke);
float *manta_smoke_turbulence_get_density(struct MANTA *smoke);
float *manta_smoke_turbulence_get_fuel(struct MANTA *smoke);
float *manta_smoke_turbulence_get_react(struct MANTA *smoke);
float *manta_smoke_turbulence_get_color_r(struct MANTA *smoke);
float *manta_smoke_turbulence_get_color_g(struct MANTA *smoke);
float *manta_smoke_turbulence_get_color_b(struct MANTA *smoke);
float *manta_smoke_turbulence_get_flame(struct MANTA *smoke);
int manta_smoke_turbulence_has_fuel(struct MANTA *smoke);
int manta_smoke_turbulence_has_colors(struct MANTA *smoke);
void manta_smoke_turbulence_get_res(struct MANTA *smoke, int *res);
int manta_smoke_turbulence_get_cells(struct MANTA *smoke);
/* Liquid functions */
void manta_liquid_export_script(struct MANTA *smoke, struct FluidModifierData *mmd);
void manta_liquid_ensure_sndparts(struct MANTA *fluid, struct FluidModifierData *mmd);
/* Liquid accessors */
int manta_liquid_get_particle_res_x(struct MANTA *liquid);
int manta_liquid_get_particle_res_y(struct MANTA *liquid);
int manta_liquid_get_particle_res_z(struct MANTA *liquid);
int manta_liquid_get_mesh_res_x(struct MANTA *liquid);
int manta_liquid_get_mesh_res_y(struct MANTA *liquid);
int manta_liquid_get_mesh_res_z(struct MANTA *liquid);
int manta_liquid_get_particle_upres(struct MANTA *liquid);
int manta_liquid_get_mesh_upres(struct MANTA *liquid);
int manta_liquid_get_num_verts(struct MANTA *liquid);
int manta_liquid_get_num_normals(struct MANTA *liquid);
int manta_liquid_get_num_triangles(struct MANTA *liquid);
float manta_liquid_get_vertex_x_at(struct MANTA *liquid, int i);
float manta_liquid_get_vertex_y_at(struct MANTA *liquid, int i);
float manta_liquid_get_vertex_z_at(struct MANTA *liquid, int i);
float manta_liquid_get_normal_x_at(struct MANTA *liquid, int i);
float manta_liquid_get_normal_y_at(struct MANTA *liquid, int i);
float manta_liquid_get_normal_z_at(struct MANTA *liquid, int i);
int manta_liquid_get_triangle_x_at(struct MANTA *liquid, int i);
int manta_liquid_get_triangle_y_at(struct MANTA *liquid, int i);
int manta_liquid_get_triangle_z_at(struct MANTA *liquid, int i);
float manta_liquid_get_vertvel_x_at(struct MANTA *liquid, int i);
float manta_liquid_get_vertvel_y_at(struct MANTA *liquid, int i);
float manta_liquid_get_vertvel_z_at(struct MANTA *liquid, int i);
int manta_liquid_get_num_flip_particles(struct MANTA *liquid);
int manta_liquid_get_num_snd_particles(struct MANTA *liquid);
int manta_liquid_get_flip_particle_flag_at(struct MANTA *liquid, int i);
int manta_liquid_get_snd_particle_flag_at(struct MANTA *liquid, int i);
float manta_liquid_get_flip_particle_position_x_at(struct MANTA *liquid, int i);
float manta_liquid_get_flip_particle_position_y_at(struct MANTA *liquid, int i);
float manta_liquid_get_flip_particle_position_z_at(struct MANTA *liquid, int i);
float manta_liquid_get_flip_particle_velocity_x_at(struct MANTA *liquid, int i);
float manta_liquid_get_flip_particle_velocity_y_at(struct MANTA *liquid, int i);
float manta_liquid_get_flip_particle_velocity_z_at(struct MANTA *liquid, int i);
float manta_liquid_get_snd_particle_position_x_at(struct MANTA *liquid, int i);
float manta_liquid_get_snd_particle_position_y_at(struct MANTA *liquid, int i);
float manta_liquid_get_snd_particle_position_z_at(struct MANTA *liquid, int i);
float manta_liquid_get_snd_particle_velocity_x_at(struct MANTA *liquid, int i);
float manta_liquid_get_snd_particle_velocity_y_at(struct MANTA *liquid, int i);
float manta_liquid_get_snd_particle_velocity_z_at(struct MANTA *liquid, int i);
bool manta_liquid_flip_from_file(struct MANTA *liquid);
bool manta_liquid_mesh_from_file(struct MANTA *liquid);
bool manta_liquid_particle_from_file(struct MANTA *liquid);
#ifdef __cplusplus
}
#endif
#endif /* MANTA_API_H_ */
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