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blender/intern/cycles/render/light.cpp

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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 "background.h"
#include "device.h"
#include "integrator.h"
#include "film.h"
#include "light.h"
#include "mesh.h"
#include "object.h"
#include "scene.h"
#include "shader.h"
#include "util_foreach.h"
#include "util_progress.h"
#include "util_logging.h"
CCL_NAMESPACE_BEGIN
static void shade_background_pixels(Device *device, DeviceScene *dscene, int res, vector<float3>& pixels, Progress& progress)
{
/* create input */
int width = res;
int height = res;
device_vector<uint4> d_input;
device_vector<float4> d_output;
uint4 *d_input_data = d_input.resize(width*height);
for(int y = 0; y < height; y++) {
for(int x = 0; x < width; x++) {
float u = x/(float)width;
float v = y/(float)height;
uint4 in = make_uint4(__float_as_int(u), __float_as_int(v), 0, 0);
d_input_data[x + y*width] = in;
}
}
/* compute on device */
d_output.resize(width*height);
memset((void*)d_output.data_pointer, 0, d_output.memory_size());
device->const_copy_to("__data", &dscene->data, sizeof(dscene->data));
device->mem_alloc(d_input, MEM_READ_ONLY);
device->mem_copy_to(d_input);
device->mem_alloc(d_output, MEM_WRITE_ONLY);
DeviceTask main_task(DeviceTask::SHADER);
main_task.shader_input = d_input.device_pointer;
main_task.shader_output = d_output.device_pointer;
main_task.shader_eval_type = SHADER_EVAL_BACKGROUND;
main_task.shader_x = 0;
main_task.shader_w = width*height;
main_task.num_samples = 1;
main_task.get_cancel = function_bind(&Progress::get_cancel, &progress);
/* disabled splitting for now, there's an issue with multi-GPU mem_copy_from */
list<DeviceTask> split_tasks;
main_task.split(split_tasks, 1, 128*128);
foreach(DeviceTask& task, split_tasks) {
device->task_add(task);
device->task_wait();
device->mem_copy_from(d_output, task.shader_x, 1, task.shader_w, sizeof(float4));
}
device->mem_free(d_input);
device->mem_free(d_output);
d_input.clear();
float4 *d_output_data = reinterpret_cast<float4*>(d_output.data_pointer);
pixels.resize(width*height);
for(int y = 0; y < height; y++) {
for(int x = 0; x < width; x++) {
pixels[y*width + x].x = d_output_data[y*width + x].x;
pixels[y*width + x].y = d_output_data[y*width + x].y;
pixels[y*width + x].z = d_output_data[y*width + x].z;
}
}
}
/* Light */
Light::Light()
{
type = LIGHT_POINT;
co = make_float3(0.0f, 0.0f, 0.0f);
dir = make_float3(0.0f, 0.0f, 0.0f);
size = 0.0f;
axisu = make_float3(0.0f, 0.0f, 0.0f);
sizeu = 1.0f;
axisv = make_float3(0.0f, 0.0f, 0.0f);
sizev = 1.0f;
map_resolution = 512;
spot_angle = M_PI_4_F;
spot_smooth = 0.0f;
cast_shadow = true;
use_mis = false;
use_diffuse = true;
use_glossy = true;
use_transmission = true;
use_scatter = true;
shader = 0;
samples = 1;
max_bounces = 1024;
is_portal = false;
}
void Light::tag_update(Scene *scene)
{
scene->light_manager->need_update = true;
}
/* Light Manager */
LightManager::LightManager()
{
need_update = true;
use_light_visibility = false;
}
LightManager::~LightManager()
{
}
void LightManager::device_update_distribution(Device *device, DeviceScene *dscene, Scene *scene, Progress& progress)
{
progress.set_status("Updating Lights", "Computing distribution");
/* count */
size_t num_lights = 0;
size_t num_background_lights = 0;
size_t num_triangles = 0;
bool background_mis = false;
foreach(Light *light, scene->lights) {
if(!light->is_portal)
num_lights++;
}
foreach(Object *object, scene->objects) {
Mesh *mesh = object->mesh;
bool have_emission = false;
/* skip if we are not visible for BSDFs */
if(!(object->visibility & (PATH_RAY_DIFFUSE|PATH_RAY_GLOSSY|PATH_RAY_TRANSMIT)))
continue;
/* skip motion blurred deforming meshes, not supported yet */
if(mesh->has_motion_blur())
continue;
/* skip if we have no emission shaders */
foreach(uint sindex, mesh->used_shaders) {
Shader *shader = scene->shaders[sindex];
if(shader->use_mis && shader->has_surface_emission) {
have_emission = true;
break;
}
}
/* count triangles */
if(have_emission) {
for(size_t i = 0; i < mesh->triangles.size(); i++) {
Shader *shader = scene->shaders[mesh->shader[i]];
if(shader->use_mis && shader->has_surface_emission)
num_triangles++;
}
}
}
size_t num_distribution = num_triangles + num_lights;
/* emission area */
float4 *distribution = dscene->light_distribution.resize(num_distribution + 1);
float totarea = 0.0f;
/* triangles */
size_t offset = 0;
int j = 0;
foreach(Object *object, scene->objects) {
Mesh *mesh = object->mesh;
bool have_emission = false;
/* skip if we are not visible for BSDFs */
if(!(object->visibility & (PATH_RAY_DIFFUSE|PATH_RAY_GLOSSY|PATH_RAY_TRANSMIT))) {
j++;
continue;
}
/* skip motion blurred deforming meshes, not supported yet */
if(mesh->has_motion_blur()) {
j++;
continue;
}
/* skip if we have no emission shaders */
foreach(uint sindex, mesh->used_shaders) {
Shader *shader = scene->shaders[sindex];
if(shader->use_mis && shader->has_surface_emission) {
have_emission = true;
break;
}
}
/* sum area */
if(have_emission) {
bool transform_applied = mesh->transform_applied;
Transform tfm = object->tfm;
int object_id = j;
int shader_flag = 0;
if(transform_applied)
object_id = ~object_id;
if(!(object->visibility & PATH_RAY_DIFFUSE)) {
shader_flag |= SHADER_EXCLUDE_DIFFUSE;
use_light_visibility = true;
}
if(!(object->visibility & PATH_RAY_GLOSSY)) {
shader_flag |= SHADER_EXCLUDE_GLOSSY;
use_light_visibility = true;
}
if(!(object->visibility & PATH_RAY_TRANSMIT)) {
shader_flag |= SHADER_EXCLUDE_TRANSMIT;
use_light_visibility = true;
}
if(!(object->visibility & PATH_RAY_VOLUME_SCATTER)) {
shader_flag |= SHADER_EXCLUDE_SCATTER;
use_light_visibility = true;
}
for(size_t i = 0; i < mesh->triangles.size(); i++) {
Shader *shader = scene->shaders[mesh->shader[i]];
if(shader->use_mis && shader->has_surface_emission) {
distribution[offset].x = totarea;
distribution[offset].y = __int_as_float(i + mesh->tri_offset);
distribution[offset].z = __int_as_float(shader_flag);
distribution[offset].w = __int_as_float(object_id);
offset++;
Mesh::Triangle t = mesh->triangles[i];
float3 p1 = mesh->verts[t.v[0]];
float3 p2 = mesh->verts[t.v[1]];
float3 p3 = mesh->verts[t.v[2]];
if(!transform_applied) {
p1 = transform_point(&tfm, p1);
p2 = transform_point(&tfm, p2);
p3 = transform_point(&tfm, p3);
}
totarea += triangle_area(p1, p2, p3);
}
}
}
if(progress.get_cancel()) return;
j++;
}
float trianglearea = totarea;
/* point lights */
float lightarea = (totarea > 0.0f) ? totarea / num_lights : 1.0f;
bool use_lamp_mis = false;
int light_index = 0;
foreach(Light *light, scene->lights) {
if(light->is_portal)
continue;
distribution[offset].x = totarea;
distribution[offset].y = __int_as_float(~light_index);
distribution[offset].z = 1.0f;
distribution[offset].w = light->size;
totarea += lightarea;
if(light->size > 0.0f && light->use_mis)
use_lamp_mis = true;
if(light->type == LIGHT_BACKGROUND) {
num_background_lights++;
background_mis = light->use_mis;
}
light_index++;
offset++;
}
/* normalize cumulative distribution functions */
distribution[num_distribution].x = totarea;
distribution[num_distribution].y = 0.0f;
distribution[num_distribution].z = 0.0f;
distribution[num_distribution].w = 0.0f;
if(totarea > 0.0f) {
for(size_t i = 0; i < num_distribution; i++)
distribution[i].x /= totarea;
distribution[num_distribution].x = 1.0f;
}
if(progress.get_cancel()) return;
/* update device */
KernelIntegrator *kintegrator = &dscene->data.integrator;
KernelFilm *kfilm = &dscene->data.film;
kintegrator->use_direct_light = (totarea > 0.0f);
if(kintegrator->use_direct_light) {
/* number of emissives */
kintegrator->num_distribution = num_distribution;
/* precompute pdfs */
kintegrator->pdf_triangles = 0.0f;
kintegrator->pdf_lights = 0.0f;
kintegrator->inv_pdf_lights = 0.0f;
/* sample one, with 0.5 probability of light or triangle */
kintegrator->num_all_lights = num_lights;
if(trianglearea > 0.0f) {
kintegrator->pdf_triangles = 1.0f/trianglearea;
if(num_lights)
kintegrator->pdf_triangles *= 0.5f;
}
if(num_lights) {
kintegrator->pdf_lights = 1.0f/num_lights;
if(trianglearea > 0.0f)
kintegrator->pdf_lights *= 0.5f;
kintegrator->inv_pdf_lights = 1.0f/kintegrator->pdf_lights;
}
kintegrator->use_lamp_mis = use_lamp_mis;
/* bit of an ugly hack to compensate for emitting triangles influencing
* amount of samples we get for this pass */
kfilm->pass_shadow_scale = 1.0f;
if(kintegrator->pdf_triangles != 0.0f)
kfilm->pass_shadow_scale *= 0.5f;
if(num_background_lights < num_lights)
kfilm->pass_shadow_scale *= (float)(num_lights - num_background_lights)/(float)num_lights;
/* CDF */
device->tex_alloc("__light_distribution", dscene->light_distribution);
/* Portals */
if(num_background_lights > 0 && light_index != scene->lights.size()) {
kintegrator->portal_offset = light_index;
kintegrator->num_portals = scene->lights.size() - light_index;
kintegrator->portal_pdf = background_mis? 0.5f: 1.0f;
}
else {
kintegrator->num_portals = 0;
kintegrator->portal_offset = 0;
kintegrator->portal_pdf = 0.0f;
}
}
else {
dscene->light_distribution.clear();
kintegrator->num_distribution = 0;
kintegrator->num_all_lights = 0;
kintegrator->pdf_triangles = 0.0f;
kintegrator->pdf_lights = 0.0f;
kintegrator->inv_pdf_lights = 0.0f;
kintegrator->use_lamp_mis = false;
kintegrator->num_portals = 0;
kintegrator->portal_offset = 0;
kintegrator->portal_pdf = 0.0f;
kfilm->pass_shadow_scale = 1.0f;
}
}
static void background_cdf(int start,
int end,
int res,
int cdf_count,
const vector<float3> *pixels,
float2 *cond_cdf)
{
/* Conditional CDFs (rows, U direction). */
for(int i = start; i < end; i++) {
float sin_theta = sinf(M_PI_F * (i + 0.5f) / res);
float3 env_color = (*pixels)[i * res];
float ave_luminamce = average(env_color);
cond_cdf[i * cdf_count].x = ave_luminamce * sin_theta;
cond_cdf[i * cdf_count].y = 0.0f;
for(int j = 1; j < res; j++) {
env_color = (*pixels)[i * res + j];
ave_luminamce = average(env_color);
cond_cdf[i * cdf_count + j].x = ave_luminamce * sin_theta;
cond_cdf[i * cdf_count + j].y = cond_cdf[i * cdf_count + j - 1].y + cond_cdf[i * cdf_count + j - 1].x / res;
}
float cdf_total = cond_cdf[i * cdf_count + res - 1].y + cond_cdf[i * cdf_count + res - 1].x / res;
float cdf_total_inv = 1.0f / cdf_total;
/* stuff the total into the brightness value for the last entry, because
* we are going to normalize the CDFs to 0.0 to 1.0 afterwards */
cond_cdf[i * cdf_count + res].x = cdf_total;
if(cdf_total > 0.0f)
for(int j = 1; j < res; j++)
cond_cdf[i * cdf_count + j].y *= cdf_total_inv;
cond_cdf[i * cdf_count + res].y = 1.0f;
}
}
void LightManager::device_update_background(Device *device, DeviceScene *dscene, Scene *scene, Progress& progress)
{
KernelIntegrator *kintegrator = &dscene->data.integrator;
Light *background_light = NULL;
/* find background light */
foreach(Light *light, scene->lights) {
if(light->type == LIGHT_BACKGROUND) {
background_light = light;
break;
}
}
/* no background light found, signal renderer to skip sampling */
if(!background_light) {
kintegrator->pdf_background_res = 0;
return;
}
progress.set_status("Updating Lights", "Importance map");
assert(kintegrator->use_direct_light);
/* get the resolution from the light's size (we stuff it in there) */
int res = background_light->map_resolution;
kintegrator->pdf_background_res = res;
assert(res > 0);
vector<float3> pixels;
shade_background_pixels(device, dscene, res, pixels, progress);
if(progress.get_cancel())
return;
/* build row distributions and column distribution for the infinite area environment light */
int cdf_count = res + 1;
float2 *marg_cdf = dscene->light_background_marginal_cdf.resize(cdf_count);
float2 *cond_cdf = dscene->light_background_conditional_cdf.resize(cdf_count * cdf_count);
double time_start = time_dt();
if(res < 512) {
/* Small enough resolution, faster to do single-threaded. */
background_cdf(0, res, res, cdf_count, &pixels, cond_cdf);
}
else {
/* Threaded evaluation for large resolution. */
const int num_blocks = TaskScheduler::num_threads();
const int chunk_size = res / num_blocks;
int start_row = 0;
TaskPool pool;
for(int i = 0; i < num_blocks; ++i) {
const int current_chunk_size =
(i != num_blocks - 1) ? chunk_size
: (res - i * chunk_size);
pool.push(function_bind(&background_cdf,
start_row, start_row + current_chunk_size,
res,
cdf_count,
&pixels,
cond_cdf));
start_row += current_chunk_size;
}
pool.wait_work();
}
/* marginal CDFs (column, V direction, sum of rows) */
marg_cdf[0].x = cond_cdf[res].x;
marg_cdf[0].y = 0.0f;
for(int i = 1; i < res; i++) {
marg_cdf[i].x = cond_cdf[i * cdf_count + res].x;
marg_cdf[i].y = marg_cdf[i - 1].y + marg_cdf[i - 1].x / res;
}
float cdf_total = marg_cdf[res - 1].y + marg_cdf[res - 1].x / res;
marg_cdf[res].x = cdf_total;
if(cdf_total > 0.0f)
for(int i = 1; i < res; i++)
marg_cdf[i].y /= cdf_total;
marg_cdf[res].y = 1.0f;
VLOG(2) << "Background MIS build time " << time_dt() - time_start << "\n";
/* update device */
device->tex_alloc("__light_background_marginal_cdf", dscene->light_background_marginal_cdf);
device->tex_alloc("__light_background_conditional_cdf", dscene->light_background_conditional_cdf);
}
void LightManager::device_update_points(Device *device, DeviceScene *dscene, Scene *scene)
{
if(scene->lights.size() == 0)
return;
/* remove background light? */
if(!(device->info.advanced_shading)) {
foreach(Light *light, scene->lights) {
if(light->type == LIGHT_BACKGROUND) {
scene->lights.erase(std::remove(scene->lights.begin(), scene->lights.end(), light), scene->lights.end());
break;
}
}
}
float4 *light_data = dscene->light_data.resize(scene->lights.size()*LIGHT_SIZE);
int light_index = 0;
foreach(Light *light, scene->lights) {
if(light->is_portal)
continue;
float3 co = light->co;
int shader_id = scene->shader_manager->get_shader_id(light->shader);
float samples = __int_as_float(light->samples);
float max_bounces = __int_as_float(light->max_bounces);
if(!light->cast_shadow)
shader_id &= ~SHADER_CAST_SHADOW;
if(!light->use_diffuse) {
shader_id |= SHADER_EXCLUDE_DIFFUSE;
use_light_visibility = true;
}
if(!light->use_glossy) {
shader_id |= SHADER_EXCLUDE_GLOSSY;
use_light_visibility = true;
}
if(!light->use_transmission) {
shader_id |= SHADER_EXCLUDE_TRANSMIT;
use_light_visibility = true;
}
if(!light->use_scatter) {
shader_id |= SHADER_EXCLUDE_SCATTER;
use_light_visibility = true;
}
if(light->type == LIGHT_POINT) {
shader_id &= ~SHADER_AREA_LIGHT;
float radius = light->size;
float invarea = (radius > 0.0f)? 1.0f/(M_PI_F*radius*radius): 1.0f;
if(light->use_mis && radius > 0.0f)
shader_id |= SHADER_USE_MIS;
light_data[light_index*LIGHT_SIZE + 0] = make_float4(__int_as_float(light->type), co.x, co.y, co.z);
light_data[light_index*LIGHT_SIZE + 1] = make_float4(__int_as_float(shader_id), radius, invarea, 0.0f);
light_data[light_index*LIGHT_SIZE + 2] = make_float4(0.0f, 0.0f, 0.0f, 0.0f);
light_data[light_index*LIGHT_SIZE + 3] = make_float4(samples, 0.0f, 0.0f, 0.0f);
light_data[light_index*LIGHT_SIZE + 4] = make_float4(max_bounces, 0.0f, 0.0f, 0.0f);
}
else if(light->type == LIGHT_DISTANT) {
shader_id &= ~SHADER_AREA_LIGHT;
float radius = light->size;
float angle = atanf(radius);
float cosangle = cosf(angle);
float area = M_PI_F*radius*radius;
float invarea = (area > 0.0f)? 1.0f/area: 1.0f;
float3 dir = light->dir;
dir = safe_normalize(dir);
if(light->use_mis && area > 0.0f)
shader_id |= SHADER_USE_MIS;
light_data[light_index*LIGHT_SIZE + 0] = make_float4(__int_as_float(light->type), dir.x, dir.y, dir.z);
light_data[light_index*LIGHT_SIZE + 1] = make_float4(__int_as_float(shader_id), radius, cosangle, invarea);
light_data[light_index*LIGHT_SIZE + 2] = make_float4(0.0f, 0.0f, 0.0f, 0.0f);
light_data[light_index*LIGHT_SIZE + 3] = make_float4(samples, 0.0f, 0.0f, 0.0f);
light_data[light_index*LIGHT_SIZE + 4] = make_float4(max_bounces, 0.0f, 0.0f, 0.0f);
}
else if(light->type == LIGHT_BACKGROUND) {
uint visibility = scene->background->visibility;
shader_id &= ~SHADER_AREA_LIGHT;
shader_id |= SHADER_USE_MIS;
if(!(visibility & PATH_RAY_DIFFUSE)) {
shader_id |= SHADER_EXCLUDE_DIFFUSE;
use_light_visibility = true;
}
if(!(visibility & PATH_RAY_GLOSSY)) {
shader_id |= SHADER_EXCLUDE_GLOSSY;
use_light_visibility = true;
}
if(!(visibility & PATH_RAY_TRANSMIT)) {
shader_id |= SHADER_EXCLUDE_TRANSMIT;
use_light_visibility = true;
}
if(!(visibility & PATH_RAY_VOLUME_SCATTER)) {
shader_id |= SHADER_EXCLUDE_SCATTER;
use_light_visibility = true;
}
light_data[light_index*LIGHT_SIZE + 0] = make_float4(__int_as_float(light->type), 0.0f, 0.0f, 0.0f);
light_data[light_index*LIGHT_SIZE + 1] = make_float4(__int_as_float(shader_id), 0.0f, 0.0f, 0.0f);
light_data[light_index*LIGHT_SIZE + 2] = make_float4(0.0f, 0.0f, 0.0f, 0.0f);
light_data[light_index*LIGHT_SIZE + 3] = make_float4(samples, 0.0f, 0.0f, 0.0f);
light_data[light_index*LIGHT_SIZE + 4] = make_float4(max_bounces, 0.0f, 0.0f, 0.0f);
}
else if(light->type == LIGHT_AREA) {
float3 axisu = light->axisu*(light->sizeu*light->size);
float3 axisv = light->axisv*(light->sizev*light->size);
float area = len(axisu)*len(axisv);
float invarea = (area > 0.0f)? 1.0f/area: 1.0f;
float3 dir = light->dir;
dir = safe_normalize(dir);
if(light->use_mis && area > 0.0f)
shader_id |= SHADER_USE_MIS;
light_data[light_index*LIGHT_SIZE + 0] = make_float4(__int_as_float(light->type), co.x, co.y, co.z);
light_data[light_index*LIGHT_SIZE + 1] = make_float4(__int_as_float(shader_id), axisu.x, axisu.y, axisu.z);
light_data[light_index*LIGHT_SIZE + 2] = make_float4(invarea, axisv.x, axisv.y, axisv.z);
light_data[light_index*LIGHT_SIZE + 3] = make_float4(samples, dir.x, dir.y, dir.z);
light_data[light_index*LIGHT_SIZE + 4] = make_float4(max_bounces, 0.0f, 0.0f, 0.0f);
}
else if(light->type == LIGHT_SPOT) {
shader_id &= ~SHADER_AREA_LIGHT;
float radius = light->size;
float invarea = (radius > 0.0f)? 1.0f/(M_PI_F*radius*radius): 1.0f;
float spot_angle = cosf(light->spot_angle*0.5f);
float spot_smooth = (1.0f - spot_angle)*light->spot_smooth;
float3 dir = light->dir;
dir = safe_normalize(dir);
if(light->use_mis && radius > 0.0f)
shader_id |= SHADER_USE_MIS;
light_data[light_index*LIGHT_SIZE + 0] = make_float4(__int_as_float(light->type), co.x, co.y, co.z);
light_data[light_index*LIGHT_SIZE + 1] = make_float4(__int_as_float(shader_id), radius, invarea, spot_angle);
light_data[light_index*LIGHT_SIZE + 2] = make_float4(spot_smooth, dir.x, dir.y, dir.z);
light_data[light_index*LIGHT_SIZE + 3] = make_float4(samples, 0.0f, 0.0f, 0.0f);
light_data[light_index*LIGHT_SIZE + 4] = make_float4(max_bounces, 0.0f, 0.0f, 0.0f);
}
light_index++;
}
/* TODO(sergey): Consider moving portals update to their own function
* keeping this one more manageable.
*/
foreach(Light *light, scene->lights) {
if(!light->is_portal)
continue;
assert(light->type == LIGHT_AREA);
float3 co = light->co;
float3 axisu = light->axisu*(light->sizeu*light->size);
float3 axisv = light->axisv*(light->sizev*light->size);
float area = len(axisu)*len(axisv);
float invarea = (area > 0.0f) ? 1.0f / area : 1.0f;
float3 dir = light->dir;
dir = safe_normalize(dir);
light_data[light_index*LIGHT_SIZE + 0] = make_float4(__int_as_float(light->type), co.x, co.y, co.z);
light_data[light_index*LIGHT_SIZE + 1] = make_float4(area, axisu.x, axisu.y, axisu.z);
light_data[light_index*LIGHT_SIZE + 2] = make_float4(invarea, axisv.x, axisv.y, axisv.z);
light_data[light_index*LIGHT_SIZE + 3] = make_float4(-1, dir.x, dir.y, dir.z);
light_data[light_index*LIGHT_SIZE + 4] = make_float4(-1, 0.0f, 0.0f, 0.0f);
light_index++;
}
assert(light_index == scene->lights.size());
device->tex_alloc("__light_data", dscene->light_data);
}
void LightManager::device_update(Device *device, DeviceScene *dscene, Scene *scene, Progress& progress)
{
VLOG(1) << "Total " << scene->lights.size() << " lights.";
if(!need_update)
return;
device_free(device, dscene);
use_light_visibility = false;
device_update_points(device, dscene, scene);
if(progress.get_cancel()) return;
device_update_distribution(device, dscene, scene, progress);
if(progress.get_cancel()) return;
device_update_background(device, dscene, scene, progress);
if(progress.get_cancel()) return;
if(use_light_visibility != scene->film->use_light_visibility) {
scene->film->use_light_visibility = use_light_visibility;
scene->film->tag_update(scene);
}
need_update = false;
}
void LightManager::device_free(Device *device, DeviceScene *dscene)
{
device->tex_free(dscene->light_distribution);
device->tex_free(dscene->light_data);
device->tex_free(dscene->light_background_marginal_cdf);
device->tex_free(dscene->light_background_conditional_cdf);
dscene->light_distribution.clear();
dscene->light_data.clear();
dscene->light_background_marginal_cdf.clear();
dscene->light_background_conditional_cdf.clear();
}
void LightManager::tag_update(Scene * /*scene*/)
{
need_update = true;
}
CCL_NAMESPACE_END
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