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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.
*
* Copyright 2016, Blender Foundation.
*/
/** \file
* \ingroup draw_engine
*/
#include "DRW_render.h"
#include "BLI_string_utils.h"
#include "MEM_guardedalloc.h"
#include "GPU_shader.h"
#include "eevee_private.h"
static const char *filter_defines = "#define HAMMERSLEY_SIZE " STRINGIFY(HAMMERSLEY_SIZE) "\n"
#if defined(IRRADIANCE_SH_L2)
"#define IRRADIANCE_SH_L2\n"
#elif defined(IRRADIANCE_CUBEMAP)
"#define IRRADIANCE_CUBEMAP\n"
#elif defined(IRRADIANCE_HL2)
"#define IRRADIANCE_HL2\n"
#endif
"#define NOISE_SIZE 64\n";
static struct {
/* Probes */
struct GPUShader *probe_default_sh;
struct GPUShader *probe_default_studiolight_sh;
struct GPUShader *probe_grid_display_sh;
struct GPUShader *probe_cube_display_sh;
struct GPUShader *probe_planar_display_sh;
struct GPUShader *probe_filter_glossy_sh;
struct GPUShader *probe_filter_diffuse_sh;
struct GPUShader *probe_filter_visibility_sh;
struct GPUShader *probe_grid_fill_sh;
struct GPUShader *probe_planar_downsample_sh;
/* Velocity Resolve */
struct GPUShader *velocity_resolve_sh;
/* Temporal Anti Aliasing */
struct GPUShader *taa_resolve_sh;
struct GPUShader *taa_resolve_reproject_sh;
} e_data = {NULL}; /* Engine data */
extern char datatoc_bsdf_common_lib_glsl[];
extern char datatoc_bsdf_sampling_lib_glsl[];
extern char datatoc_common_uniforms_lib_glsl[];
extern char datatoc_common_view_lib_glsl[];
extern char datatoc_background_vert_glsl[];
extern char datatoc_default_world_frag_glsl[];
extern char datatoc_lightprobe_geom_glsl[];
extern char datatoc_lightprobe_vert_glsl[];
extern char datatoc_lightprobe_cube_display_frag_glsl[];
extern char datatoc_lightprobe_cube_display_vert_glsl[];
extern char datatoc_lightprobe_filter_diffuse_frag_glsl[];
extern char datatoc_lightprobe_filter_glossy_frag_glsl[];
extern char datatoc_lightprobe_filter_visibility_frag_glsl[];
extern char datatoc_lightprobe_grid_display_frag_glsl[];
extern char datatoc_lightprobe_grid_display_vert_glsl[];
extern char datatoc_lightprobe_grid_fill_frag_glsl[];
extern char datatoc_lightprobe_planar_display_frag_glsl[];
extern char datatoc_lightprobe_planar_display_vert_glsl[];
extern char datatoc_lightprobe_planar_downsample_frag_glsl[];
extern char datatoc_lightprobe_planar_downsample_geom_glsl[];
extern char datatoc_lightprobe_planar_downsample_vert_glsl[];
extern char datatoc_irradiance_lib_glsl[];
extern char datatoc_lightprobe_lib_glsl[];
extern char datatoc_octahedron_lib_glsl[];
/* Velocity Resolve */
extern char datatoc_effect_velocity_resolve_frag_glsl[];
/* Temporal Sampling */
extern char datatoc_effect_temporal_aa_glsl[];
/* *********** FUNCTIONS *********** */
void EEVEE_shaders_lightprobe_shaders_init(void)
{
BLI_assert(e_data.probe_filter_glossy_sh == NULL);
char *shader_str = NULL;
shader_str = BLI_string_joinN(datatoc_common_view_lib_glsl,
datatoc_common_uniforms_lib_glsl,
datatoc_bsdf_common_lib_glsl,
datatoc_bsdf_sampling_lib_glsl,
datatoc_lightprobe_filter_glossy_frag_glsl);
e_data.probe_filter_glossy_sh = DRW_shader_create(
datatoc_lightprobe_vert_glsl, datatoc_lightprobe_geom_glsl, shader_str, filter_defines);
e_data.probe_default_sh = DRW_shader_create_with_lib(datatoc_background_vert_glsl,
NULL,
datatoc_default_world_frag_glsl,
datatoc_common_view_lib_glsl,
NULL);
MEM_freeN(shader_str);
shader_str = BLI_string_joinN(datatoc_common_view_lib_glsl,
datatoc_common_uniforms_lib_glsl,
datatoc_bsdf_common_lib_glsl,
datatoc_bsdf_sampling_lib_glsl,
datatoc_lightprobe_filter_diffuse_frag_glsl);
e_data.probe_filter_diffuse_sh = DRW_shader_create_fullscreen(shader_str, filter_defines);
MEM_freeN(shader_str);
shader_str = BLI_string_joinN(datatoc_common_view_lib_glsl,
datatoc_common_uniforms_lib_glsl,
datatoc_bsdf_common_lib_glsl,
datatoc_bsdf_sampling_lib_glsl,
datatoc_lightprobe_filter_visibility_frag_glsl);
e_data.probe_filter_visibility_sh = DRW_shader_create_fullscreen(shader_str, filter_defines);
MEM_freeN(shader_str);
e_data.probe_grid_fill_sh = DRW_shader_create_fullscreen(datatoc_lightprobe_grid_fill_frag_glsl,
filter_defines);
e_data.probe_planar_downsample_sh = DRW_shader_create(
datatoc_lightprobe_planar_downsample_vert_glsl,
datatoc_lightprobe_planar_downsample_geom_glsl,
datatoc_lightprobe_planar_downsample_frag_glsl,
NULL);
}
GPUShader *EEVEE_shaders_probe_filter_glossy_sh_get(void)
{
return e_data.probe_filter_glossy_sh;
}
GPUShader *EEVEE_shaders_probe_default_sh_get(void)
{
return e_data.probe_default_sh;
}
GPUShader *EEVEE_shaders_probe_filter_diffuse_sh_get(void)
{
return e_data.probe_filter_diffuse_sh;
}
GPUShader *EEVEE_shaders_probe_filter_visibility_sh_get(void)
{
return e_data.probe_filter_visibility_sh;
}
GPUShader *EEVEE_shaders_probe_grid_fill_sh_get(void)
{
return e_data.probe_grid_fill_sh;
}
GPUShader *EEVEE_shaders_probe_planar_downsample_sh_get(void)
{
return e_data.probe_planar_downsample_sh;
}
GPUShader *EEVEE_shaders_default_studiolight_sh_get(void)
{
if (e_data.probe_default_studiolight_sh == NULL) {
e_data.probe_default_studiolight_sh = DRW_shader_create_with_lib(
datatoc_background_vert_glsl,
NULL,
datatoc_default_world_frag_glsl,
datatoc_common_view_lib_glsl,
"#define LOOKDEV\n");
}
return e_data.probe_default_studiolight_sh;
}
GPUShader *EEVEE_shaders_probe_cube_display_sh_get(void)
{
if (e_data.probe_cube_display_sh == NULL) {
char *shader_str = BLI_string_joinN(datatoc_octahedron_lib_glsl,
datatoc_common_view_lib_glsl,
datatoc_common_uniforms_lib_glsl,
datatoc_bsdf_common_lib_glsl,
datatoc_lightprobe_lib_glsl,
datatoc_lightprobe_cube_display_frag_glsl);
char *vert_str = BLI_string_joinN(datatoc_common_view_lib_glsl,
datatoc_lightprobe_cube_display_vert_glsl);
e_data.probe_cube_display_sh = DRW_shader_create(vert_str, NULL, shader_str, SHADER_DEFINES);
MEM_freeN(vert_str);
MEM_freeN(shader_str);
}
return e_data.probe_cube_display_sh;
}
GPUShader *EEVEE_shaders_probe_grid_display_sh_get(void)
{
if (e_data.probe_grid_display_sh == NULL) {
char *shader_str = BLI_string_joinN(datatoc_octahedron_lib_glsl,
datatoc_common_view_lib_glsl,
datatoc_common_uniforms_lib_glsl,
datatoc_bsdf_common_lib_glsl,
datatoc_irradiance_lib_glsl,
datatoc_lightprobe_lib_glsl,
datatoc_lightprobe_grid_display_frag_glsl);
char *vert_str = BLI_string_joinN(datatoc_common_view_lib_glsl,
datatoc_lightprobe_grid_display_vert_glsl);
e_data.probe_grid_display_sh = DRW_shader_create(vert_str, NULL, shader_str, filter_defines);
MEM_freeN(vert_str);
MEM_freeN(shader_str);
}
return e_data.probe_grid_display_sh;
}
GPUShader *EEVEE_shaders_probe_planar_display_sh_get(void)
{
if (e_data.probe_planar_display_sh == NULL) {
char *vert_str = BLI_string_joinN(datatoc_common_view_lib_glsl,
datatoc_lightprobe_planar_display_vert_glsl);
char *shader_str = BLI_string_joinN(datatoc_common_view_lib_glsl,
datatoc_lightprobe_planar_display_frag_glsl);
e_data.probe_planar_display_sh = DRW_shader_create(vert_str, NULL, shader_str, NULL);
MEM_freeN(vert_str);
MEM_freeN(shader_str);
}
return e_data.probe_planar_display_sh;
}
GPUShader *EEVEE_shaders_velocity_resolve_sh_get(void)
{
if (e_data.velocity_resolve_sh == NULL) {
char *frag_str = BLI_string_joinN(datatoc_common_uniforms_lib_glsl,
datatoc_common_view_lib_glsl,
datatoc_bsdf_common_lib_glsl,
datatoc_effect_velocity_resolve_frag_glsl);
e_data.velocity_resolve_sh = DRW_shader_create_fullscreen(frag_str, NULL);
MEM_freeN(frag_str);
}
return e_data.velocity_resolve_sh;
}
GPUShader *EEVEE_shaders_taa_resolve_sh_get(EEVEE_EffectsFlag enabled_effects)
{
GPUShader **sh;
const char *define = NULL;
if (enabled_effects & EFFECT_TAA_REPROJECT) {
sh = &e_data.taa_resolve_reproject_sh;
define = "#define USE_REPROJECTION\n";
}
else {
sh = &e_data.taa_resolve_sh;
}
if (*sh == NULL) {
char *frag_str = BLI_string_joinN(datatoc_common_uniforms_lib_glsl,
datatoc_common_view_lib_glsl,
datatoc_bsdf_common_lib_glsl,
datatoc_effect_temporal_aa_glsl);
*sh = DRW_shader_create_fullscreen(frag_str, define);
MEM_freeN(frag_str);
}
return *sh;
}
void EEVEE_shaders_free(void)
{
DRW_SHADER_FREE_SAFE(e_data.probe_default_sh);
DRW_SHADER_FREE_SAFE(e_data.probe_filter_glossy_sh);
DRW_SHADER_FREE_SAFE(e_data.probe_filter_diffuse_sh);
DRW_SHADER_FREE_SAFE(e_data.probe_filter_visibility_sh);
DRW_SHADER_FREE_SAFE(e_data.probe_grid_fill_sh);
DRW_SHADER_FREE_SAFE(e_data.probe_planar_downsample_sh);
DRW_SHADER_FREE_SAFE(e_data.probe_default_studiolight_sh);
DRW_SHADER_FREE_SAFE(e_data.probe_grid_display_sh);
DRW_SHADER_FREE_SAFE(e_data.probe_cube_display_sh);
DRW_SHADER_FREE_SAFE(e_data.probe_planar_display_sh);
DRW_SHADER_FREE_SAFE(e_data.velocity_resolve_sh);
DRW_SHADER_FREE_SAFE(e_data.taa_resolve_sh);
DRW_SHADER_FREE_SAFE(e_data.taa_resolve_reproject_sh);
}
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