Validate physical light units in GI classes.

Add checks for physical light units in a few more places to ensure they aren't used when disabled.

scene/3d/lightmap_gi.cpp

@@ -1001,10 +1001,16 @@ LightmapGI::BakeError LightmapGI::bake(Node *p_from_node, String p_image_data_pa
 				lightmapper->add_directional_light(light->get_bake_mode() == Light3D::BAKE_STATIC, -xf.basis.get_column(Vector3::AXIS_Z).normalized(), linear_color, energy, l->get_param(Light3D::PARAM_SIZE), l->get_param(Light3D::PARAM_SHADOW_BLUR));
 			} else if (Object::cast_to<OmniLight3D>(light)) {
 				OmniLight3D *l = Object::cast_to<OmniLight3D>(light);
-				lightmapper->add_omni_light(light->get_bake_mode() == Light3D::BAKE_STATIC, xf.origin, linear_color, energy * (1.0 / (Math_PI * 4.0)), l->get_param(Light3D::PARAM_RANGE), l->get_param(Light3D::PARAM_ATTENUATION), l->get_param(Light3D::PARAM_SIZE), l->get_param(Light3D::PARAM_SHADOW_BLUR));
+				if (GLOBAL_GET("rendering/lights_and_shadows/use_physical_light_units")) {
+					energy *= (1.0 / (Math_PI * 4.0));
+				}
+				lightmapper->add_omni_light(light->get_bake_mode() == Light3D::BAKE_STATIC, xf.origin, linear_color, energy, l->get_param(Light3D::PARAM_RANGE), l->get_param(Light3D::PARAM_ATTENUATION), l->get_param(Light3D::PARAM_SIZE), l->get_param(Light3D::PARAM_SHADOW_BLUR));
 			} else if (Object::cast_to<SpotLight3D>(light)) {
 				SpotLight3D *l = Object::cast_to<SpotLight3D>(light);
-				lightmapper->add_spot_light(light->get_bake_mode() == Light3D::BAKE_STATIC, xf.origin, -xf.basis.get_column(Vector3::AXIS_Z).normalized(), linear_color, energy * (1.0 / Math_PI), l->get_param(Light3D::PARAM_RANGE), l->get_param(Light3D::PARAM_ATTENUATION), l->get_param(Light3D::PARAM_SPOT_ANGLE), l->get_param(Light3D::PARAM_SPOT_ATTENUATION), l->get_param(Light3D::PARAM_SIZE), l->get_param(Light3D::PARAM_SHADOW_BLUR));
+				if (GLOBAL_GET("rendering/lights_and_shadows/use_physical_light_units")) {
+					energy *= (1.0 / Math_PI);
+				}
+				lightmapper->add_spot_light(light->get_bake_mode() == Light3D::BAKE_STATIC, xf.origin, -xf.basis.get_column(Vector3::AXIS_Z).normalized(), linear_color, energy, l->get_param(Light3D::PARAM_RANGE), l->get_param(Light3D::PARAM_ATTENUATION), l->get_param(Light3D::PARAM_SPOT_ANGLE), l->get_param(Light3D::PARAM_SPOT_ATTENUATION), l->get_param(Light3D::PARAM_SIZE), l->get_param(Light3D::PARAM_SHADOW_BLUR));
 			}
 		}
 		for (int i = 0; i < probes_found.size(); i++) {
@@ -1061,7 +1067,10 @@ LightmapGI::BakeError LightmapGI::bake(Node *p_from_node, String p_image_data_pa
 
 	float exposure_normalization = 1.0;
 	if (camera_attributes.is_valid()) {
-		exposure_normalization = camera_attributes->calculate_exposure_normalization() * camera_attributes->get_exposure_multiplier();
+		exposure_normalization = camera_attributes->get_exposure_multiplier();
+		if (GLOBAL_GET("rendering/lights_and_shadows/use_physical_light_units")) {
+			exposure_normalization = camera_attributes->calculate_exposure_normalization();
+		}
 	}
 
 	Lightmapper::BakeError bake_err = lightmapper->bake(Lightmapper::BakeQuality(bake_quality), use_denoiser, bounces, bias, max_texture_size, directional, Lightmapper::GenerateProbes(gen_probes), environment_image, environment_transform, _lightmap_bake_step_function, &bsud, exposure_normalization);

scene/3d/voxel_gi.cpp

@@ -30,6 +30,7 @@
 
 #include "voxel_gi.h"
 
+#include "core/config/project_settings.h"
 #include "core/core_string_names.h"
 #include "mesh_instance_3d.h"
 #include "multimesh_instance_3d.h"
@@ -382,7 +383,10 @@ void VoxelGI::bake(Node *p_from_node, bool p_create_visual_debug) {
 
 	float exposure_normalization = 1.0;
 	if (camera_attributes.is_valid()) {
-		exposure_normalization = camera_attributes->calculate_exposure_normalization() * camera_attributes->get_exposure_multiplier();
+		exposure_normalization = camera_attributes->get_exposure_multiplier();
+		if (GLOBAL_GET("rendering/lights_and_shadows/use_physical_light_units")) {
+			exposure_normalization = camera_attributes->calculate_exposure_normalization();
+		}
 	}
 
 	Voxelizer baker;