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Implement Physical Light Units as an optional setting.

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This allows light sources to be specified in physical light units in addition to the regular energy multiplier. In order to avoid loss of precision at high values, brightness values are premultiplied by an exposure normalization value.

In support of Physical Light Units this PR also renames CameraEffects to CameraAttributes.
This commit is contained in:
clayjohn 2022-07-31 16:20:24 -07:00
parent 736632ee7e
commit 385ee5c70b
131 changed files with 2692 additions and 1283 deletions
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10
scene/3d/voxelizer.cpp
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@ -30,6 +30,8 @@
#include "voxelizer.h"
#include "core/config/project_settings.h"
static _FORCE_INLINE_ void get_uv_and_normal(const Vector3 &p_pos, const Vector3 *p_vtx, const Vector2 *p_uv, const Vector3 *p_normal, Vector2 &r_uv, Vector3 &r_normal) {
if (p_pos.is_equal_approx(p_vtx[0])) {
r_uv = p_uv[0];
@ -348,7 +350,10 @@ Voxelizer::MaterialCache Voxelizer::_get_material_cache(Ref<Material> p_material
Ref<Texture2D> emission_tex = mat->get_texture(BaseMaterial3D::TEXTURE_EMISSION);
Color emission_col = mat->get_emission();
float emission_energy = mat->get_emission_energy();
float emission_energy = mat->get_emission_energy_multiplier() * exposure_normalization;
if (GLOBAL_GET("rendering/lights_and_shadows/use_physical_light_units")) {
emission_energy *= mat->get_emission_intensity();
}
Ref<Image> img_emission;
@ -608,10 +613,11 @@ void Voxelizer::_fixup_plot(int p_idx, int p_level) {
}
}
void Voxelizer::begin_bake(int p_subdiv, const AABB &p_bounds) {
void Voxelizer::begin_bake(int p_subdiv, const AABB &p_bounds, float p_exposure_normalization) {
sorted = false;
original_bounds = p_bounds;
cell_subdiv = p_subdiv;
exposure_normalization = p_exposure_normalization;
bake_cells.resize(1);
material_cache.clear();