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/*
* Copyright 2016, Blender Foundation.
*
* 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.
*
* Contributor(s): Blender Institute
*
*/
/** \file workbench_materials.c
* \ingroup draw_engine
*/
#include "workbench_private.h"
#include "GPU_shader.h"
/* *********** STATIC *********** */
static struct {
struct GPUShader *depth_sh;
/* Solid flat mode */
struct GPUShader *solid_flat_sh;
/* Solid studio mode */
struct GPUShader *solid_studio_sh;
} e_data = {NULL};
/* Shaders */
extern char datatoc_solid_flat_frag_glsl[];
extern char datatoc_solid_studio_frag_glsl[];
extern char datatoc_workbench_vert_glsl[];
extern char datatoc_workbench_studio_vert_glsl[];
extern char datatoc_workbench_diffuse_lib_glsl[];
/* Functions */
static uint get_material_hash(const float color[3])
{
uint r = (uint)(color[0] * 512);
uint g = (uint)(color[1] * 512);
uint b = (uint)(color[2] * 512);
return r + g * 4096 + b * 4096 * 4096;
}
static const float* get_material_solid_color(WORKBENCH_PrivateData *UNUSED(wpd), Object *ob)
{
return ob->col;
}
void workbench_materials_engine_init(void)
{
if (!e_data.depth_sh) {
/* Depth pass */
e_data.depth_sh = DRW_shader_create_3D_depth_only();
/* Solid flat */
e_data.solid_flat_sh = DRW_shader_create(datatoc_workbench_vert_glsl, NULL, datatoc_solid_flat_frag_glsl, "\n");
e_data.solid_studio_sh = DRW_shader_create(datatoc_workbench_studio_vert_glsl, NULL, datatoc_solid_studio_frag_glsl, datatoc_workbench_diffuse_lib_glsl);
}
}
void workbench_materials_engine_free()
{
DRW_SHADER_FREE_SAFE(e_data.solid_flat_sh);
DRW_SHADER_FREE_SAFE(e_data.solid_studio_sh);
}
void workbench_materials_draw_scene_finish(WORKBENCH_Data *vedata)
{
WORKBENCH_StorageList *stl = vedata->stl;
WORKBENCH_PrivateData *wpd = stl->g_data;
BLI_ghash_free(wpd->material_hash, NULL, MEM_freeN);
}
void workbench_materials_cache_init(WORKBENCH_Data *vedata)
{
WORKBENCH_StorageList *stl = vedata->stl;
WORKBENCH_PassList *psl = vedata->psl;
WORKBENCH_PrivateData *wpd = stl->g_data;
const DRWContextState *DCS = DRW_context_state_get();
wpd->depth_shgrp = DRW_shgroup_create(e_data.depth_sh, psl->depth_pass);
wpd->material_hash = BLI_ghash_ptr_new("Workbench material_hash");
View3D *v3d = DCS->v3d;
if (v3d) {
#if 0
/* TODO: switch implementation when OB_TEXTURE is implemented */
switch (v3d->drawtype) {
default:
case OB_SOLID:
wpd->drawtype_lighting = v3d->drawtype_solid;
break;
}
#else
wpd->drawtype_lighting = v3d->drawtype_solid;
#endif
}
else {
wpd->drawtype_lighting = V3D_LIGHTING_STUDIO;
}
}
void workbench_materials_solid_cache_populate(WORKBENCH_Data *vedata, Object *ob)
{
WORKBENCH_StorageList *stl = vedata->stl;
WORKBENCH_PassList *psl = vedata->psl;
WORKBENCH_PrivateData *wpd = stl->g_data;
if (!DRW_object_is_renderable(ob))
return;
struct Gwn_Batch *geom = DRW_cache_object_surface_get(ob);
WORKBENCH_MaterialData *material;
if (geom) {
/* Depth */
DRW_shgroup_call_add(stl->g_data->depth_shgrp, geom, ob->obmat);
/* Solid */
GPUShader *shader = wpd->drawtype_lighting == V3D_LIGHTING_FLAT?e_data.solid_flat_sh:e_data.solid_studio_sh;
const float *color = get_material_solid_color(wpd, ob);
uint hash = get_material_hash(color);
material = BLI_ghash_lookup(wpd->material_hash, SET_UINT_IN_POINTER(hash));
if (material == NULL) {
material = MEM_mallocN(sizeof(WORKBENCH_MaterialData), "WORKBENCH_MaterialData");
material->shgrp = DRW_shgroup_create(shader, psl->solid_pass);
copy_v3_v3(material->color, color);
DRW_shgroup_uniform_vec3(material->shgrp, "color", material->color, 1);
BLI_ghash_insert(wpd->material_hash, SET_UINT_IN_POINTER(hash), material);
}
DRW_shgroup_call_add(material->shgrp, geom, ob->obmat);
}
}
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