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Merge pull request #52952 from Calinou/cpu-lightmapper-num-threads-editor-setting

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Rémi Verschelde 2021-10-05 19:20:29 +02:00 committed by GitHub
commit 393166793c
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 25 additions and 4 deletions
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15
core/os/threaded_array_processor.h
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@ -64,8 +64,10 @@ void process_array_thread(void *ud) {
}
}
// p_num_threads is the number of logical CPU cores to use (0 = use all logical CPU cores available).
// Negative values subtract from the total number of logical CPU cores available.
template <class C, class M, class U>
void thread_process_array(uint32_t p_elements, C *p_instance, M p_method, U p_userdata) {
void thread_process_array(uint32_t p_elements, C *p_instance, M p_method, U p_userdata, int p_num_threads = 0) {
ThreadArrayProcessData<C, U> data;
data.method = p_method;
data.instance = p_instance;
@ -74,7 +76,13 @@ void thread_process_array(uint32_t p_elements, C *p_instance, M p_method, U p_us
data.elements = p_elements;
data.process(0); //process first, let threads increment for next
int thread_count = OS::get_singleton()->get_processor_count();
int thread_count;
if (p_num_threads <= 0) {
thread_count = MAX(1, OS::get_singleton()->get_processor_count() + p_num_threads);
} else {
thread_count = p_num_threads;
}
Thread *threads = memnew_arr(Thread, thread_count);
for (int i = 0; i < thread_count; i++) {
@ -89,8 +97,9 @@ void thread_process_array(uint32_t p_elements, C *p_instance, M p_method, U p_us
#else
// p_num_threads is intentionally unused when threads are disabled.
template <class C, class M, class U>
void thread_process_array(uint32_t p_elements, C *p_instance, M p_method, U p_userdata) {
void thread_process_array(uint32_t p_elements, C *p_instance, M p_method, U p_userdata, int p_num_threads = 0) {
ThreadArrayProcessData<C, U> data;
data.method = p_method;
data.instance = p_instance;

3
editor/editor_settings.cpp
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@ -546,6 +546,9 @@ void EditorSettings::_load_defaults(Ref<ConfigFile> p_extra_config) {
_initial_set("editors/3d/default_z_near", 0.05);
_initial_set("editors/3d/default_z_far", 500.0);
_initial_set("editors/3d/lightmap_baking_number_of_cpu_threads", 0);
hints["editors/3d/lightmap_baking_number_of_cpu_threads"] = PropertyInfo(Variant::INT, "editors/3d/lightmap_baking_number_of_cpu_threads", PROPERTY_HINT_RANGE, "-2,128,1", PROPERTY_USAGE_DEFAULT);
// 3D: Navigation
_initial_set("editors/3d/navigation/navigation_scheme", 0);
_initial_set("editors/3d/navigation/invert_y_axis", false);

11
modules/lightmapper_cpu/lightmapper_cpu.cpp
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@ -36,6 +36,10 @@
#include "core/project_settings.h"
#include "modules/raycast/lightmap_raycaster.h"
#ifdef TOOLS_ENABLED
#include "editor/editor_settings.h"
#endif
Error LightmapperCPU::_layout_atlas(int p_max_size, Vector2i *r_atlas_size, int *r_atlas_slices) {
Vector2i atlas_size;
for (unsigned int i = 0; i < mesh_instances.size(); i++) {
@ -205,7 +209,12 @@ Error LightmapperCPU::_layout_atlas(int p_max_size, Vector2i *r_atlas_size, int
void LightmapperCPU::_thread_func_callback(void *p_thread_data) {
ThreadData *thread_data = reinterpret_cast<ThreadData *>(p_thread_data);
thread_process_array(thread_data->count, thread_data->instance, &LightmapperCPU::_thread_func_wrapper, thread_data);
#ifdef TOOLS_ENABLED
const int num_threads = EDITOR_GET("editors/3d/lightmap_baking_number_of_cpu_threads");
#else
const int num_threads = 0;
#endif
thread_process_array(thread_data->count, thread_data->instance, &LightmapperCPU::_thread_func_wrapper, thread_data, num_threads);
}
void LightmapperCPU::_thread_func_wrapper(uint32_t p_idx, ThreadData *p_thread_data) {