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/*
* Copyright 2011-2013 Blender Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "render/light.h"
#include "blender/blender_sync.h"
#include "blender/blender_util.h"
#include "util/util_hash.h"
CCL_NAMESPACE_BEGIN
void BlenderSync::sync_light(BL::Object &b_parent,
int persistent_id[OBJECT_PERSISTENT_ID_SIZE],
BL::Object &b_ob,
BL::Object &b_ob_instance,
int random_id,
Transform &tfm,
bool *use_portal)
{
/* test if we need to sync */
Light *light;
ObjectKey key(b_parent, persistent_id, b_ob_instance, false);
BL::Light b_light(b_ob.data());
/* Update if either object or light data changed. */
if (!light_map.add_or_update(&light, b_ob, b_parent, key)) {
Shader *shader;
if (!shader_map.add_or_update(&shader, b_light)) {
if (light->is_portal)
*use_portal = true;
return;
}
}
/* type */
switch (b_light.type()) {
case BL::Light::type_POINT: {
BL::PointLight b_point_light(b_light);
light->size = b_point_light.shadow_soft_size();
light->type = LIGHT_POINT;
break;
}
case BL::Light::type_SPOT: {
BL::SpotLight b_spot_light(b_light);
light->size = b_spot_light.shadow_soft_size();
light->type = LIGHT_SPOT;
light->spot_angle = b_spot_light.spot_size();
light->spot_smooth = b_spot_light.spot_blend();
break;
}
/* Hemi were removed from 2.8 */
// case BL::Light::type_HEMI: {
// light->type = LIGHT_DISTANT;
// light->size = 0.0f;
// break;
// }
case BL::Light::type_SUN: {
BL::SunLight b_sun_light(b_light);
light->angle = b_sun_light.angle();
light->type = LIGHT_DISTANT;
break;
}
case BL::Light::type_AREA: {
BL::AreaLight b_area_light(b_light);
light->size = 1.0f;
light->axisu = transform_get_column(&tfm, 0);
light->axisv = transform_get_column(&tfm, 1);
light->sizeu = b_area_light.size();
switch (b_area_light.shape()) {
case BL::AreaLight::shape_SQUARE:
light->sizev = light->sizeu;
light->round = false;
break;
case BL::AreaLight::shape_RECTANGLE:
light->sizev = b_area_light.size_y();
light->round = false;
break;
case BL::AreaLight::shape_DISK:
light->sizev = light->sizeu;
light->round = true;
break;
case BL::AreaLight::shape_ELLIPSE:
light->sizev = b_area_light.size_y();
light->round = true;
break;
}
light->type = LIGHT_AREA;
break;
}
}
/* strength */
light->strength = get_float3(b_light.color());
light->strength *= BL::PointLight(b_light).energy();
/* location and (inverted!) direction */
light->co = transform_get_column(&tfm, 3);
light->dir = -transform_get_column(&tfm, 2);
light->tfm = tfm;
/* shader */
vector<Shader *> used_shaders;
find_shader(b_light, used_shaders, scene->default_light);
light->shader = used_shaders[0];
/* shadow */
PointerRNA cscene = RNA_pointer_get(&b_scene.ptr, "cycles");
PointerRNA clight = RNA_pointer_get(&b_light.ptr, "cycles");
light->cast_shadow = get_boolean(clight, "cast_shadow");
light->use_mis = get_boolean(clight, "use_multiple_importance_sampling");
int samples = get_int(clight, "samples");
if (get_boolean(cscene, "use_square_samples"))
light->samples = samples * samples;
else
light->samples = samples;
light->max_bounces = get_int(clight, "max_bounces");
if (b_ob != b_ob_instance) {
light->random_id = random_id;
}
else {
light->random_id = hash_uint2(hash_string(b_ob.name().c_str()), 0);
}
if (light->type == LIGHT_AREA)
light->is_portal = get_boolean(clight, "is_portal");
else
light->is_portal = false;
if (light->is_portal)
*use_portal = true;
/* visibility */
uint visibility = object_ray_visibility(b_ob);
light->use_diffuse = (visibility & PATH_RAY_DIFFUSE) != 0;
light->use_glossy = (visibility & PATH_RAY_GLOSSY) != 0;
light->use_transmission = (visibility & PATH_RAY_TRANSMIT) != 0;
light->use_scatter = (visibility & PATH_RAY_VOLUME_SCATTER) != 0;
/* tag */
light->tag_update(scene);
}
void BlenderSync::sync_background_light(BL::SpaceView3D &b_v3d, bool use_portal)
{
BL::World b_world = b_scene.world();
if (b_world) {
PointerRNA cscene = RNA_pointer_get(&b_scene.ptr, "cycles");
PointerRNA cworld = RNA_pointer_get(&b_world.ptr, "cycles");
enum SamplingMethod { SAMPLING_NONE = 0, SAMPLING_AUTOMATIC, SAMPLING_MANUAL, SAMPLING_NUM };
int sampling_method = get_enum(cworld, "sampling_method", SAMPLING_NUM, SAMPLING_AUTOMATIC);
bool sample_as_light = (sampling_method != SAMPLING_NONE);
if (sample_as_light || use_portal) {
/* test if we need to sync */
Light *light;
ObjectKey key(b_world, 0, b_world, false);
if (light_map.add_or_update(&light, b_world, b_world, key) || world_recalc ||
b_world.ptr.data != world_map) {
light->type = LIGHT_BACKGROUND;
if (sampling_method == SAMPLING_MANUAL) {
light->map_resolution = get_int(cworld, "sample_map_resolution");
}
else {
light->map_resolution = 0;
}
light->shader = scene->default_background;
light->use_mis = sample_as_light;
light->max_bounces = get_int(cworld, "max_bounces");
/* force enable light again when world is resynced */
light->is_enabled = true;
int samples = get_int(cworld, "samples");
if (get_boolean(cscene, "use_square_samples"))
light->samples = samples * samples;
else
light->samples = samples;
light->tag_update(scene);
light_map.set_recalc(b_world);
}
}
}
world_map = b_world.ptr.data;
world_recalc = false;
viewport_parameters = BlenderViewportParameters(b_v3d);
}
CCL_NAMESPACE_END
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