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light_storage.cpp
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/**************************************************************************/
/* light_storage.cpp */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/**************************************************************************/
#include "light_storage.h"
#include "core/config/project_settings.h"
#include "servers/rendering/renderer_rd/renderer_scene_render_rd.h"
#include "texture_storage.h"
using namespace RendererRD;
LightStorage *LightStorage::singleton = nullptr;
LightStorage *LightStorage::get_singleton() {
return singleton;
}
LightStorage::LightStorage() {
singleton = this;
TextureStorage *texture_storage = TextureStorage::get_singleton();
directional_shadow.size = GLOBAL_GET("rendering/lights_and_shadows/directional_shadow/size");
directional_shadow.use_16_bits = GLOBAL_GET("rendering/lights_and_shadows/directional_shadow/16_bits");
using_lightmap_array = true; // high end
if (using_lightmap_array) {
uint64_t textures_per_stage = RD::get_singleton()->limit_get(RD::LIMIT_MAX_TEXTURES_PER_SHADER_STAGE);
if (textures_per_stage <= 256) {
lightmap_textures.resize(32);
} else {
lightmap_textures.resize(1024);
}
for (int i = 0; i < lightmap_textures.size(); i++) {
lightmap_textures.write[i] = texture_storage->texture_rd_get_default(TextureStorage::DEFAULT_RD_TEXTURE_2D_ARRAY_WHITE);
}
}
lightmap_probe_capture_update_speed = GLOBAL_GET("rendering/lightmapping/probe_capture/update_speed");
}
LightStorage::~LightStorage() {
free_reflection_data();
free_light_data();
for (const KeyValue<int, ShadowCubemap> &E : shadow_cubemaps) {
RD::get_singleton()->free(E.value.cubemap);
}
singleton = nullptr;
}
bool LightStorage::free(RID p_rid) {
if (owns_reflection_probe(p_rid)) {
reflection_probe_free(p_rid);
return true;
} else if (owns_reflection_atlas(p_rid)) {
reflection_atlas_free(p_rid);
return true;
} else if (owns_reflection_probe_instance(p_rid)) {
reflection_probe_instance_free(p_rid);
return true;
} else if (owns_light(p_rid)) {
light_free(p_rid);
return true;
} else if (owns_light_instance(p_rid)) {
light_instance_free(p_rid);
return true;
} else if (owns_lightmap(p_rid)) {
lightmap_free(p_rid);
return true;
} else if (owns_lightmap_instance(p_rid)) {
lightmap_instance_free(p_rid);
return true;
} else if (owns_shadow_atlas(p_rid)) {
shadow_atlas_free(p_rid);
return true;
}
return false;
}
/* LIGHT */
void LightStorage::_light_initialize(RID p_light, RS::LightType p_type) {
Light light;
light.type = p_type;
light.param[RS::LIGHT_PARAM_ENERGY] = 1.0;
light.param[RS::LIGHT_PARAM_INDIRECT_ENERGY] = 1.0;
light.param[RS::LIGHT_PARAM_VOLUMETRIC_FOG_ENERGY] = 1.0;
light.param[RS::LIGHT_PARAM_SPECULAR] = 0.5;
light.param[RS::LIGHT_PARAM_RANGE] = 1.0;
light.param[RS::LIGHT_PARAM_SIZE] = 0.0;
light.param[RS::LIGHT_PARAM_ATTENUATION] = 1.0;
light.param[RS::LIGHT_PARAM_SPOT_ANGLE] = 45;
light.param[RS::LIGHT_PARAM_SPOT_ATTENUATION] = 1.0;
light.param[RS::LIGHT_PARAM_SHADOW_MAX_DISTANCE] = 0;
light.param[RS::LIGHT_PARAM_SHADOW_SPLIT_1_OFFSET] = 0.1;
light.param[RS::LIGHT_PARAM_SHADOW_SPLIT_2_OFFSET] = 0.3;
light.param[RS::LIGHT_PARAM_SHADOW_SPLIT_3_OFFSET] = 0.6;
light.param[RS::LIGHT_PARAM_SHADOW_FADE_START] = 0.8;
light.param[RS::LIGHT_PARAM_SHADOW_NORMAL_BIAS] = 1.0;
light.param[RS::LIGHT_PARAM_SHADOW_BIAS] = 0.02;
light.param[RS::LIGHT_PARAM_SHADOW_OPACITY] = 1.0;
light.param[RS::LIGHT_PARAM_SHADOW_BLUR] = 0;
light.param[RS::LIGHT_PARAM_SHADOW_PANCAKE_SIZE] = 20.0;
light.param[RS::LIGHT_PARAM_TRANSMITTANCE_BIAS] = 0.05;
light.param[RS::LIGHT_PARAM_INTENSITY] = p_type == RS::LIGHT_DIRECTIONAL ? 100000.0 : 1000.0;
light_owner.initialize_rid(p_light, light);
}
RID LightStorage::directional_light_allocate() {
return light_owner.allocate_rid();
}
void LightStorage::directional_light_initialize(RID p_light) {
_light_initialize(p_light, RS::LIGHT_DIRECTIONAL);
}
RID LightStorage::omni_light_allocate() {
return light_owner.allocate_rid();
}
void LightStorage::omni_light_initialize(RID p_light) {
_light_initialize(p_light, RS::LIGHT_OMNI);
}
RID LightStorage::spot_light_allocate() {
return light_owner.allocate_rid();
}
void LightStorage::spot_light_initialize(RID p_light) {
_light_initialize(p_light, RS::LIGHT_SPOT);
}
void LightStorage::light_free(RID p_rid) {
light_set_projector(p_rid, RID()); //clear projector
// delete the texture
Light *light = light_owner.get_or_null(p_rid);
light->dependency.deleted_notify(p_rid);
light_owner.free(p_rid);
}
void LightStorage::light_set_color(RID p_light, const Color &p_color) {
Light *light = light_owner.get_or_null(p_light);
ERR_FAIL_NULL(light);
light->color = p_color;
}
void LightStorage::light_set_param(RID p_light, RS::LightParam p_param, float p_value) {
Light *light = light_owner.get_or_null(p_light);
ERR_FAIL_NULL(light);
ERR_FAIL_INDEX(p_param, RS::LIGHT_PARAM_MAX);
if (light->param[p_param] == p_value) {
return;
}
switch (p_param) {
case RS::LIGHT_PARAM_RANGE:
case RS::LIGHT_PARAM_SPOT_ANGLE:
case RS::LIGHT_PARAM_SHADOW_MAX_DISTANCE:
case RS::LIGHT_PARAM_SHADOW_SPLIT_1_OFFSET:
case RS::LIGHT_PARAM_SHADOW_SPLIT_2_OFFSET:
case RS::LIGHT_PARAM_SHADOW_SPLIT_3_OFFSET:
case RS::LIGHT_PARAM_SHADOW_NORMAL_BIAS:
case RS::LIGHT_PARAM_SHADOW_PANCAKE_SIZE:
case RS::LIGHT_PARAM_SHADOW_BIAS: {
light->version++;
light->dependency.changed_notify(Dependency::DEPENDENCY_CHANGED_LIGHT);
} break;
case RS::LIGHT_PARAM_SIZE: {
if ((light->param[p_param] > CMP_EPSILON) != (p_value > CMP_EPSILON)) {
//changing from no size to size and the opposite
light->dependency.changed_notify(Dependency::DEPENDENCY_CHANGED_LIGHT_SOFT_SHADOW_AND_PROJECTOR);
}
} break;
default: {
}
}
light->param[p_param] = p_value;
}
void LightStorage::light_set_shadow(RID p_light, bool p_enabled) {
Light *light = light_owner.get_or_null(p_light);
ERR_FAIL_NULL(light);
light->shadow = p_enabled;
light->version++;
light->dependency.changed_notify(Dependency::DEPENDENCY_CHANGED_LIGHT);
}
void LightStorage::light_set_projector(RID p_light, RID p_texture) {
TextureStorage *texture_storage = TextureStorage::get_singleton();
Light *light = light_owner.get_or_null(p_light);
ERR_FAIL_NULL(light);
if (light->projector == p_texture) {
return;
}
ERR_FAIL_COND(p_texture.is_valid() && !texture_storage->owns_texture(p_texture));
if (light->type != RS::LIGHT_DIRECTIONAL && light->projector.is_valid()) {
texture_storage->texture_remove_from_decal_atlas(light->projector, light->type == RS::LIGHT_OMNI);
}
light->projector = p_texture;
if (light->type != RS::LIGHT_DIRECTIONAL) {
if (light->projector.is_valid()) {
texture_storage->texture_add_to_decal_atlas(light->projector, light->type == RS::LIGHT_OMNI);
}
light->dependency.changed_notify(Dependency::DEPENDENCY_CHANGED_LIGHT_SOFT_SHADOW_AND_PROJECTOR);
}
}
void LightStorage::light_set_negative(RID p_light, bool p_enable) {
Light *light = light_owner.get_or_null(p_light);
ERR_FAIL_NULL(light);
light->negative = p_enable;
}
void LightStorage::light_set_cull_mask(RID p_light, uint32_t p_mask) {
Light *light = light_owner.get_or_null(p_light);
ERR_FAIL_NULL(light);
light->cull_mask = p_mask;
light->version++;
light->dependency.changed_notify(Dependency::DEPENDENCY_CHANGED_LIGHT);
}
void LightStorage::light_set_distance_fade(RID p_light, bool p_enabled, float p_begin, float p_shadow, float p_length) {
Light *light = light_owner.get_or_null(p_light);
ERR_FAIL_NULL(light);
light->distance_fade = p_enabled;
light->distance_fade_begin = p_begin;
light->distance_fade_shadow = p_shadow;
light->distance_fade_length = p_length;
}
void LightStorage::light_set_reverse_cull_face_mode(RID p_light, bool p_enabled) {
Light *light = light_owner.get_or_null(p_light);
ERR_FAIL_NULL(light);
light->reverse_cull = p_enabled;
light->version++;
light->dependency.changed_notify(Dependency::DEPENDENCY_CHANGED_LIGHT);
}
void LightStorage::light_set_shadow_caster_mask(RID p_light, uint32_t p_caster_mask) {
Light *light = light_owner.get_or_null(p_light);
ERR_FAIL_NULL(light);
light->shadow_caster_mask = p_caster_mask;
light->version++;
light->dependency.changed_notify(Dependency::DEPENDENCY_CHANGED_LIGHT);
}
uint32_t LightStorage::light_get_shadow_caster_mask(RID p_light) const {
Light *light = light_owner.get_or_null(p_light);
ERR_FAIL_NULL_V(light, 0);
return light->shadow_caster_mask;
}
void LightStorage::light_set_bake_mode(RID p_light, RS::LightBakeMode p_bake_mode) {
Light *light = light_owner.get_or_null(p_light);
ERR_FAIL_NULL(light);
light->bake_mode = p_bake_mode;
light->version++;
light->dependency.changed_notify(Dependency::DEPENDENCY_CHANGED_LIGHT);
}
void LightStorage::light_set_max_sdfgi_cascade(RID p_light, uint32_t p_cascade) {
Light *light = light_owner.get_or_null(p_light);
ERR_FAIL_NULL(light);
light->max_sdfgi_cascade = p_cascade;
light->version++;
light->dependency.changed_notify(Dependency::DEPENDENCY_CHANGED_LIGHT);
}
void LightStorage::light_omni_set_shadow_mode(RID p_light, RS::LightOmniShadowMode p_mode) {
Light *light = light_owner.get_or_null(p_light);
ERR_FAIL_NULL(light);
light->omni_shadow_mode = p_mode;
light->version++;
light->dependency.changed_notify(Dependency::DEPENDENCY_CHANGED_LIGHT);
if (p_mode == RS::LIGHT_OMNI_SHADOW_DUAL_PARABOLOID) {
shadow_dual_paraboloid_used = true;
} else if (p_mode == RS::LIGHT_OMNI_SHADOW_CUBE) {
shadow_cubemaps_used = true;
}
}
RS::LightOmniShadowMode LightStorage::light_omni_get_shadow_mode(RID p_light) {
const Light *light = light_owner.get_or_null(p_light);
ERR_FAIL_NULL_V(light, RS::LIGHT_OMNI_SHADOW_CUBE);
return light->omni_shadow_mode;
}
void LightStorage::light_directional_set_shadow_mode(RID p_light, RS::LightDirectionalShadowMode p_mode) {
Light *light = light_owner.get_or_null(p_light);
ERR_FAIL_NULL(light);
light->directional_shadow_mode = p_mode;
light->version++;
light->dependency.changed_notify(Dependency::DEPENDENCY_CHANGED_LIGHT);
}
void LightStorage::light_directional_set_blend_splits(RID p_light, bool p_enable) {
Light *light = light_owner.get_or_null(p_light);
ERR_FAIL_NULL(light);
light->directional_blend_splits = p_enable;
light->version++;
light->dependency.changed_notify(Dependency::DEPENDENCY_CHANGED_LIGHT);
}
bool LightStorage::light_directional_get_blend_splits(RID p_light) const {
const Light *light = light_owner.get_or_null(p_light);
ERR_FAIL_NULL_V(light, false);
return light->directional_blend_splits;
}
void LightStorage::light_directional_set_sky_mode(RID p_light, RS::LightDirectionalSkyMode p_mode) {
Light *light = light_owner.get_or_null(p_light);
ERR_FAIL_NULL(light);
light->directional_sky_mode = p_mode;
}
RS::LightDirectionalSkyMode LightStorage::light_directional_get_sky_mode(RID p_light) const {
const Light *light = light_owner.get_or_null(p_light);
ERR_FAIL_NULL_V(light, RS::LIGHT_DIRECTIONAL_SKY_MODE_LIGHT_AND_SKY);
return light->directional_sky_mode;
}
RS::LightDirectionalShadowMode LightStorage::light_directional_get_shadow_mode(RID p_light) {
const Light *light = light_owner.get_or_null(p_light);
ERR_FAIL_NULL_V(light, RS::LIGHT_DIRECTIONAL_SHADOW_ORTHOGONAL);
return light->directional_shadow_mode;
}
uint32_t LightStorage::light_get_max_sdfgi_cascade(RID p_light) {
const Light *light = light_owner.get_or_null(p_light);
ERR_FAIL_NULL_V(light, 0);
return light->max_sdfgi_cascade;
}
RS::LightBakeMode LightStorage::light_get_bake_mode(RID p_light) {
const Light *light = light_owner.get_or_null(p_light);
ERR_FAIL_NULL_V(light, RS::LIGHT_BAKE_DISABLED);
return light->bake_mode;
}
uint64_t LightStorage::light_get_version(RID p_light) const {
const Light *light = light_owner.get_or_null(p_light);
ERR_FAIL_NULL_V(light, 0);
return light->version;
}
uint32_t LightStorage::light_get_cull_mask(RID p_light) const {
const Light *light = light_owner.get_or_null(p_light);
ERR_FAIL_NULL_V(light, 0);
return light->cull_mask;
}
AABB LightStorage::light_get_aabb(RID p_light) const {
const Light *light = light_owner.get_or_null(p_light);
ERR_FAIL_NULL_V(light, AABB());
switch (light->type) {
case RS::LIGHT_SPOT: {
float len = light->param[RS::LIGHT_PARAM_RANGE];
float size = Math::tan(Math::deg_to_rad(light->param[RS::LIGHT_PARAM_SPOT_ANGLE])) * len;
return AABB(Vector3(-size, -size, -len), Vector3(size * 2, size * 2, len));
};
case RS::LIGHT_OMNI: {
float r = light->param[RS::LIGHT_PARAM_RANGE];
return AABB(-Vector3(r, r, r), Vector3(r, r, r) * 2);
};
case RS::LIGHT_DIRECTIONAL: {
return AABB();
};
}
ERR_FAIL_V(AABB());
}
Dependency *LightStorage::light_get_dependency(RID p_light) const {
Light *light = light_owner.get_or_null(p_light);
ERR_FAIL_NULL_V(light, nullptr);
return &light->dependency;
}
/* LIGHT INSTANCE API */
RID LightStorage::light_instance_create(RID p_light) {
RID li = light_instance_owner.make_rid(LightInstance());
LightInstance *light_instance = light_instance_owner.get_or_null(li);
light_instance->self = li;
light_instance->light = p_light;
light_instance->light_type = light_get_type(p_light);
if (light_instance->light_type != RS::LIGHT_DIRECTIONAL) {
light_instance->forward_id = ForwardIDStorage::get_singleton()->allocate_forward_id(light_instance->light_type == RS::LIGHT_OMNI ? FORWARD_ID_TYPE_OMNI_LIGHT : FORWARD_ID_TYPE_SPOT_LIGHT);
}
return li;
}
void LightStorage::light_instance_free(RID p_light) {
LightInstance *light_instance = light_instance_owner.get_or_null(p_light);
//remove from shadow atlases..
for (const RID &E : light_instance->shadow_atlases) {
ShadowAtlas *shadow_atlas = shadow_atlas_owner.get_or_null(E);
ERR_CONTINUE(!shadow_atlas->shadow_owners.has(p_light));
uint32_t key = shadow_atlas->shadow_owners[p_light];
uint32_t q = (key >> QUADRANT_SHIFT) & 0x3;
uint32_t s = key & SHADOW_INDEX_MASK;
shadow_atlas->quadrants[q].shadows.write[s].owner = RID();
if (key & OMNI_LIGHT_FLAG) {
// Omni lights use two atlas spots, make sure to clear the other as well
shadow_atlas->quadrants[q].shadows.write[s + 1].owner = RID();
}
shadow_atlas->shadow_owners.erase(p_light);
}
if (light_instance->light_type != RS::LIGHT_DIRECTIONAL) {
ForwardIDStorage::get_singleton()->free_forward_id(light_instance->light_type == RS::LIGHT_OMNI ? FORWARD_ID_TYPE_OMNI_LIGHT : FORWARD_ID_TYPE_SPOT_LIGHT, light_instance->forward_id);
}
light_instance_owner.free(p_light);
}
void LightStorage::light_instance_set_transform(RID p_light_instance, const Transform3D &p_transform) {
LightInstance *light_instance = light_instance_owner.get_or_null(p_light_instance);
ERR_FAIL_NULL(light_instance);
light_instance->transform = p_transform;
}
void LightStorage::light_instance_set_aabb(RID p_light_instance, const AABB &p_aabb) {
LightInstance *light_instance = light_instance_owner.get_or_null(p_light_instance);
ERR_FAIL_NULL(light_instance);
light_instance->aabb = p_aabb;
}
void LightStorage::light_instance_set_shadow_transform(RID p_light_instance, const Projection &p_projection, const Transform3D &p_transform, float p_far, float p_split, int p_pass, float p_shadow_texel_size, float p_bias_scale, float p_range_begin, const Vector2 &p_uv_scale) {
LightInstance *light_instance = light_instance_owner.get_or_null(p_light_instance);
ERR_FAIL_NULL(light_instance);
ERR_FAIL_INDEX(p_pass, 6);
light_instance->shadow_transform[p_pass].camera = p_projection;
light_instance->shadow_transform[p_pass].transform = p_transform;
light_instance->shadow_transform[p_pass].farplane = p_far;
light_instance->shadow_transform[p_pass].split = p_split;
light_instance->shadow_transform[p_pass].bias_scale = p_bias_scale;
light_instance->shadow_transform[p_pass].range_begin = p_range_begin;
light_instance->shadow_transform[p_pass].shadow_texel_size = p_shadow_texel_size;
light_instance->shadow_transform[p_pass].uv_scale = p_uv_scale;
}
void LightStorage::light_instance_mark_visible(RID p_light_instance) {
LightInstance *light_instance = light_instance_owner.get_or_null(p_light_instance);
ERR_FAIL_NULL(light_instance);
light_instance->last_scene_pass = RendererSceneRenderRD::get_singleton()->get_scene_pass();
}
/* LIGHT DATA */
void LightStorage::free_light_data() {
if (directional_light_buffer.is_valid()) {
RD::get_singleton()->free(directional_light_buffer);
directional_light_buffer = RID();
}
if (omni_light_buffer.is_valid()) {
RD::get_singleton()->free(omni_light_buffer);
omni_light_buffer = RID();
}
if (spot_light_buffer.is_valid()) {
RD::get_singleton()->free(spot_light_buffer);
spot_light_buffer = RID();
}
if (directional_lights != nullptr) {
memdelete_arr(directional_lights);
directional_lights = nullptr;
}
if (omni_lights != nullptr) {
memdelete_arr(omni_lights);
omni_lights = nullptr;
}
if (spot_lights != nullptr) {
memdelete_arr(spot_lights);
spot_lights = nullptr;
}
if (omni_light_sort != nullptr) {
memdelete_arr(omni_light_sort);
omni_light_sort = nullptr;
}
if (spot_light_sort != nullptr) {
memdelete_arr(spot_light_sort);
spot_light_sort = nullptr;
}
}
void LightStorage::set_max_lights(const uint32_t p_max_lights) {
max_lights = p_max_lights;
uint32_t light_buffer_size = max_lights * sizeof(LightData);
omni_lights = memnew_arr(LightData, max_lights);
omni_light_buffer = RD::get_singleton()->storage_buffer_create(light_buffer_size);
omni_light_sort = memnew_arr(LightInstanceDepthSort, max_lights);
spot_lights = memnew_arr(LightData, max_lights);
spot_light_buffer = RD::get_singleton()->storage_buffer_create(light_buffer_size);
spot_light_sort = memnew_arr(LightInstanceDepthSort, max_lights);
//defines += "\n#define MAX_LIGHT_DATA_STRUCTS " + itos(max_lights) + "\n";
max_directional_lights = RendererSceneRender::MAX_DIRECTIONAL_LIGHTS;
uint32_t directional_light_buffer_size = max_directional_lights * sizeof(DirectionalLightData);
directional_lights = memnew_arr(DirectionalLightData, max_directional_lights);
directional_light_buffer = RD::get_singleton()->uniform_buffer_create(directional_light_buffer_size);
}
void LightStorage::update_light_buffers(RenderDataRD *p_render_data, const PagedArray<RID> &p_lights, const Transform3D &p_camera_transform, RID p_shadow_atlas, bool p_using_shadows, uint32_t &r_directional_light_count, uint32_t &r_positional_light_count, bool &r_directional_light_soft_shadows) {
ForwardIDStorage *forward_id_storage = ForwardIDStorage::get_singleton();
RendererRD::TextureStorage *texture_storage = RendererRD::TextureStorage::get_singleton();
Transform3D inverse_transform = p_camera_transform.affine_inverse();
r_directional_light_count = 0;
r_positional_light_count = 0;
omni_light_count = 0;
spot_light_count = 0;
r_directional_light_soft_shadows = false;
for (int i = 0; i < (int)p_lights.size(); i++) {
LightInstance *light_instance = light_instance_owner.get_or_null(p_lights[i]);
if (!light_instance) {
continue;
}
Light *light = light_owner.get_or_null(light_instance->light);
ERR_CONTINUE(light == nullptr);
switch (light->type) {
case RS::LIGHT_DIRECTIONAL: {
if (r_directional_light_count >= max_directional_lights || light->directional_sky_mode == RS::LIGHT_DIRECTIONAL_SKY_MODE_SKY_ONLY) {
continue;
}
DirectionalLightData &light_data = directional_lights[r_directional_light_count];
Transform3D light_transform = light_instance->transform;
Vector3 direction = inverse_transform.basis.xform(light_transform.basis.xform(Vector3(0, 0, 1))).normalized();
light_data.direction[0] = direction.x;
light_data.direction[1] = direction.y;
light_data.direction[2] = direction.z;
float sign = light->negative ? -1 : 1;
light_data.energy = sign * light->param[RS::LIGHT_PARAM_ENERGY];
if (RendererSceneRenderRD::get_singleton()->is_using_physical_light_units()) {
light_data.energy *= light->param[RS::LIGHT_PARAM_INTENSITY];
} else {
light_data.energy *= Math_PI;
}
if (p_render_data->camera_attributes.is_valid()) {
light_data.energy *= RSG::camera_attributes->camera_attributes_get_exposure_normalization_factor(p_render_data->camera_attributes);
}
Color linear_col = light->color.srgb_to_linear();
light_data.color[0] = linear_col.r;
light_data.color[1] = linear_col.g;
light_data.color[2] = linear_col.b;
light_data.specular = light->param[RS::LIGHT_PARAM_SPECULAR];
light_data.volumetric_fog_energy = light->param[RS::LIGHT_PARAM_VOLUMETRIC_FOG_ENERGY];
light_data.mask = light->cull_mask;
float size = light->param[RS::LIGHT_PARAM_SIZE];
light_data.size = 1.0 - Math::cos(Math::deg_to_rad(size)); //angle to cosine offset
light_data.shadow_opacity = (p_using_shadows && light->shadow)
? light->param[RS::LIGHT_PARAM_SHADOW_OPACITY]
: 0.0;
float angular_diameter = light->param[RS::LIGHT_PARAM_SIZE];
if (angular_diameter > 0.0) {
// I know tan(0) is 0, but let's not risk it with numerical precision.
// technically this will keep expanding until reaching the sun, but all we care
// is expand until we reach the radius of the near plane (there can't be more occluders than that)
angular_diameter = Math::tan(Math::deg_to_rad(angular_diameter));
if (light->shadow && light->param[RS::LIGHT_PARAM_SHADOW_BLUR] > 0.0) {
// Only enable PCSS-like soft shadows if blurring is enabled.
// Otherwise, performance would decrease with no visual difference.
r_directional_light_soft_shadows = true;
}
} else {
angular_diameter = 0.0;
}
if (light_data.shadow_opacity > 0.001) {
RS::LightDirectionalShadowMode smode = light->directional_shadow_mode;
light_data.soft_shadow_scale = light->param[RS::LIGHT_PARAM_SHADOW_BLUR];
light_data.softshadow_angle = angular_diameter;
light_data.bake_mode = light->bake_mode;
if (angular_diameter <= 0.0) {
light_data.soft_shadow_scale *= RendererSceneRenderRD::get_singleton()->directional_shadow_quality_radius_get(); // Only use quality radius for PCF
}
int limit = smode == RS::LIGHT_DIRECTIONAL_SHADOW_ORTHOGONAL ? 0 : (smode == RS::LIGHT_DIRECTIONAL_SHADOW_PARALLEL_2_SPLITS ? 1 : 3);
light_data.blend_splits = (smode != RS::LIGHT_DIRECTIONAL_SHADOW_ORTHOGONAL) && light->directional_blend_splits;
for (int j = 0; j < 4; j++) {
Rect2 atlas_rect = light_instance->shadow_transform[j].atlas_rect;
Projection correction;
correction.set_depth_correction(false, true, false);
Projection matrix = correction * light_instance->shadow_transform[j].camera;
float split = light_instance->shadow_transform[MIN(limit, j)].split;
Projection bias;
bias.set_light_bias();
Projection rectm;
rectm.set_light_atlas_rect(atlas_rect);
Transform3D modelview = (inverse_transform * light_instance->shadow_transform[j].transform).inverse();
Projection shadow_mtx = rectm * bias * matrix * modelview;
light_data.shadow_split_offsets[j] = split;
float bias_scale = light_instance->shadow_transform[j].bias_scale * light_data.soft_shadow_scale;
light_data.shadow_bias[j] = light->param[RS::LIGHT_PARAM_SHADOW_BIAS] / 100.0 * bias_scale;
light_data.shadow_normal_bias[j] = light->param[RS::LIGHT_PARAM_SHADOW_NORMAL_BIAS] * light_instance->shadow_transform[j].shadow_texel_size;
light_data.shadow_transmittance_bias[j] = light->param[RS::LIGHT_PARAM_TRANSMITTANCE_BIAS] / 100.0 * bias_scale;
light_data.shadow_z_range[j] = light_instance->shadow_transform[j].farplane;
light_data.shadow_range_begin[j] = light_instance->shadow_transform[j].range_begin;
RendererRD::MaterialStorage::store_camera(shadow_mtx, light_data.shadow_matrices[j]);
Vector2 uv_scale = light_instance->shadow_transform[j].uv_scale;
uv_scale *= atlas_rect.size; //adapt to atlas size
switch (j) {
case 0: {
light_data.uv_scale1[0] = uv_scale.x;
light_data.uv_scale1[1] = uv_scale.y;
} break;
case 1: {
light_data.uv_scale2[0] = uv_scale.x;
light_data.uv_scale2[1] = uv_scale.y;
} break;
case 2: {
light_data.uv_scale3[0] = uv_scale.x;
light_data.uv_scale3[1] = uv_scale.y;
} break;
case 3: {
light_data.uv_scale4[0] = uv_scale.x;
light_data.uv_scale4[1] = uv_scale.y;
} break;
}
}
float fade_start = light->param[RS::LIGHT_PARAM_SHADOW_FADE_START];
light_data.fade_from = -light_data.shadow_split_offsets[3] * MIN(fade_start, 0.999); //using 1.0 would break smoothstep
light_data.fade_to = -light_data.shadow_split_offsets[3];
}
r_directional_light_count++;
} break;
case RS::LIGHT_OMNI: {
if (omni_light_count >= max_lights) {
continue;
}
Transform3D light_transform = light_instance->transform;
const real_t distance = p_camera_transform.origin.distance_to(light_transform.origin);
if (light->distance_fade) {
const float fade_begin = light->distance_fade_begin;
const float fade_length = light->distance_fade_length;
if (distance > fade_begin) {
if (distance > fade_begin + fade_length) {
// Out of range, don't draw this light to improve performance.
continue;
}
}
}
omni_light_sort[omni_light_count].light_instance = light_instance;
omni_light_sort[omni_light_count].light = light;
omni_light_sort[omni_light_count].depth = distance;
omni_light_count++;
} break;
case RS::LIGHT_SPOT: {
if (spot_light_count >= max_lights) {
continue;
}
Transform3D light_transform = light_instance->transform;
const real_t distance = p_camera_transform.origin.distance_to(light_transform.origin);
if (light->distance_fade) {
const float fade_begin = light->distance_fade_begin;
const float fade_length = light->distance_fade_length;
if (distance > fade_begin) {
if (distance > fade_begin + fade_length) {
// Out of range, don't draw this light to improve performance.
continue;
}
}
}
spot_light_sort[spot_light_count].light_instance = light_instance;
spot_light_sort[spot_light_count].light = light;
spot_light_sort[spot_light_count].depth = distance;
spot_light_count++;
} break;
}
light_instance->last_pass = RSG::rasterizer->get_frame_number();
}
if (omni_light_count) {
SortArray<LightInstanceDepthSort> sorter;
sorter.sort(omni_light_sort, omni_light_count);
}
if (spot_light_count) {
SortArray<LightInstanceDepthSort> sorter;
sorter.sort(spot_light_sort, spot_light_count);
}
bool using_forward_ids = forward_id_storage->uses_forward_ids();
for (uint32_t i = 0; i < (omni_light_count + spot_light_count); i++) {
uint32_t index = (i < omni_light_count) ? i : i - (omni_light_count);
LightData &light_data = (i < omni_light_count) ? omni_lights[index] : spot_lights[index];
RS::LightType type = (i < omni_light_count) ? RS::LIGHT_OMNI : RS::LIGHT_SPOT;
LightInstance *light_instance = (i < omni_light_count) ? omni_light_sort[index].light_instance : spot_light_sort[index].light_instance;
Light *light = (i < omni_light_count) ? omni_light_sort[index].light : spot_light_sort[index].light;
real_t distance = (i < omni_light_count) ? omni_light_sort[index].depth : spot_light_sort[index].depth;
if (using_forward_ids) {
forward_id_storage->map_forward_id(type == RS::LIGHT_OMNI ? RendererRD::FORWARD_ID_TYPE_OMNI_LIGHT : RendererRD::FORWARD_ID_TYPE_SPOT_LIGHT, light_instance->forward_id, index, light_instance->last_pass);
}
Transform3D light_transform = light_instance->transform;
float sign = light->negative ? -1 : 1;
Color linear_col = light->color.srgb_to_linear();
light_data.attenuation = light->param[RS::LIGHT_PARAM_ATTENUATION];
// Reuse fade begin, fade length and distance for shadow LOD determination later.
float fade_begin = 0.0;
float fade_shadow = 0.0;
float fade_length = 0.0;
float fade = 1.0;
float shadow_opacity_fade = 1.0;
if (light->distance_fade) {
fade_begin = light->distance_fade_begin;
fade_shadow = light->distance_fade_shadow;
fade_length = light->distance_fade_length;
// Use `smoothstep()` to make opacity changes more gradual and less noticeable to the player.
if (distance > fade_begin) {
fade = Math::smoothstep(0.0f, 1.0f, 1.0f - float(distance - fade_begin) / fade_length);
}
if (distance > fade_shadow) {
shadow_opacity_fade = Math::smoothstep(0.0f, 1.0f, 1.0f - float(distance - fade_shadow) / fade_length);
}
}
float energy = sign * light->param[RS::LIGHT_PARAM_ENERGY] * fade;
if (RendererSceneRenderRD::get_singleton()->is_using_physical_light_units()) {
energy *= light->param[RS::LIGHT_PARAM_INTENSITY];
// Convert from Luminous Power to Luminous Intensity
if (type == RS::LIGHT_OMNI) {
energy *= 1.0 / (Math_PI * 4.0);
} else {
// Spot Lights are not physically accurate, Luminous Intensity should change in relation to the cone angle.
// We make this assumption to keep them easy to control.
energy *= 1.0 / Math_PI;
}
} else {
energy *= Math_PI;
}
if (p_render_data->camera_attributes.is_valid()) {
energy *= RSG::camera_attributes->camera_attributes_get_exposure_normalization_factor(p_render_data->camera_attributes);
}
light_data.color[0] = linear_col.r * energy;
light_data.color[1] = linear_col.g * energy;
light_data.color[2] = linear_col.b * energy;
light_data.specular_amount = light->param[RS::LIGHT_PARAM_SPECULAR] * 2.0;
light_data.volumetric_fog_energy = light->param[RS::LIGHT_PARAM_VOLUMETRIC_FOG_ENERGY];
light_data.bake_mode = light->bake_mode;
float radius = MAX(0.001, light->param[RS::LIGHT_PARAM_RANGE]);
light_data.inv_radius = 1.0 / radius;
Vector3 pos = inverse_transform.xform(light_transform.origin);
light_data.position[0] = pos.x;
light_data.position[1] = pos.y;
light_data.position[2] = pos.z;
Vector3 direction = inverse_transform.basis.xform(light_transform.basis.xform(Vector3(0, 0, -1))).normalized();
light_data.direction[0] = direction.x;
light_data.direction[1] = direction.y;
light_data.direction[2] = direction.z;
float size = light->param[RS::LIGHT_PARAM_SIZE];
light_data.size = size;
light_data.inv_spot_attenuation = 1.0f / light->param[RS::LIGHT_PARAM_SPOT_ATTENUATION];
float spot_angle = light->param[RS::LIGHT_PARAM_SPOT_ANGLE];
light_data.cos_spot_angle = Math::cos(Math::deg_to_rad(spot_angle));
light_data.mask = light->cull_mask;
light_data.atlas_rect[0] = 0;
light_data.atlas_rect[1] = 0;
light_data.atlas_rect[2] = 0;
light_data.atlas_rect[3] = 0;
RID projector = light->projector;
if (projector.is_valid()) {
Rect2 rect = texture_storage->decal_atlas_get_texture_rect(projector);
if (type == RS::LIGHT_SPOT) {
light_data.projector_rect[0] = rect.position.x;
light_data.projector_rect[1] = rect.position.y + rect.size.height; //flip because shadow is flipped
light_data.projector_rect[2] = rect.size.width;
light_data.projector_rect[3] = -rect.size.height;
} else {
light_data.projector_rect[0] = rect.position.x;
light_data.projector_rect[1] = rect.position.y;
light_data.projector_rect[2] = rect.size.width;
light_data.projector_rect[3] = rect.size.height * 0.5; //used by dp, so needs to be half
}
} else {
light_data.projector_rect[0] = 0;
light_data.projector_rect[1] = 0;
light_data.projector_rect[2] = 0;
light_data.projector_rect[3] = 0;
}
const bool needs_shadow =
p_using_shadows &&
owns_shadow_atlas(p_shadow_atlas) &&
shadow_atlas_owns_light_instance(p_shadow_atlas, light_instance->self) &&
light->shadow;
bool in_shadow_range = true;
if (needs_shadow && light->distance_fade) {
if (distance > light->distance_fade_shadow + light->distance_fade_length) {
// Out of range, don't draw shadows to improve performance.
in_shadow_range = false;
}
}
if (needs_shadow && in_shadow_range) {
// fill in the shadow information
light_data.shadow_opacity = light->param[RS::LIGHT_PARAM_SHADOW_OPACITY] * shadow_opacity_fade;
float shadow_texel_size = light_instance_get_shadow_texel_size(light_instance->self, p_shadow_atlas);
light_data.shadow_normal_bias = light->param[RS::LIGHT_PARAM_SHADOW_NORMAL_BIAS] * shadow_texel_size * 10.0;
if (type == RS::LIGHT_SPOT) {
light_data.shadow_bias = light->param[RS::LIGHT_PARAM_SHADOW_BIAS] / 100.0;
} else { //omni
light_data.shadow_bias = light->param[RS::LIGHT_PARAM_SHADOW_BIAS];
}
light_data.transmittance_bias = light->param[RS::LIGHT_PARAM_TRANSMITTANCE_BIAS];
Vector2i omni_offset;
Rect2 rect = light_instance_get_shadow_atlas_rect(light_instance->self, p_shadow_atlas, omni_offset);
light_data.atlas_rect[0] = rect.position.x;
light_data.atlas_rect[1] = rect.position.y;
light_data.atlas_rect[2] = rect.size.width;
light_data.atlas_rect[3] = rect.size.height;
light_data.soft_shadow_scale = light->param[RS::LIGHT_PARAM_SHADOW_BLUR];
if (type == RS::LIGHT_OMNI) {
Transform3D proj = (inverse_transform * light_transform).inverse();
RendererRD::MaterialStorage::store_transform(proj, light_data.shadow_matrix);
if (size > 0.0 && light_data.soft_shadow_scale > 0.0) {
// Only enable PCSS-like soft shadows if blurring is enabled.
// Otherwise, performance would decrease with no visual difference.
light_data.soft_shadow_size = size;
} else {
light_data.soft_shadow_size = 0.0;
light_data.soft_shadow_scale *= RendererSceneRenderRD::get_singleton()->shadows_quality_radius_get(); // Only use quality radius for PCF
}
light_data.direction[0] = omni_offset.x * float(rect.size.width);
light_data.direction[1] = omni_offset.y * float(rect.size.height);
} else if (type == RS::LIGHT_SPOT) {
Transform3D modelview = (inverse_transform * light_transform).inverse();
Projection bias;
bias.set_light_bias();
Projection correction;
correction.set_depth_correction(false, true, false);
Projection cm = correction * light_instance->shadow_transform[0].camera;
Projection shadow_mtx = bias * cm * modelview;
RendererRD::MaterialStorage::store_camera(shadow_mtx, light_data.shadow_matrix);