bb9d5cdaad
When enabled, this normalize the strength by the light area, to keep the total output the same regardless of shape or size. This is the existing behavior. This is supported in Cycles, EEVEE, Hydra, USD, COLLADA. For add-ons, an API function to compute the area is added for conversion, in case there is no native support for normalization. area = light.area(matrix_world=ob.matrix_world) Co-authored-by: Brecht Van Lommel <brecht@blender.org> Pull Request: https://projects.blender.org/blender/blender/pulls/136958
27 lines
698 B
C
27 lines
698 B
C
/* SPDX-FileCopyrightText: 2001-2002 NaN Holding BV. All rights reserved.
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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#pragma once
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/** \file
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* \ingroup bke
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* \brief General operations, lookup, etc. for blender lights.
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*/
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#include "BLI_compiler_attrs.h"
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#include "BLI_math_matrix_types.hh"
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#include "BLI_math_vector_types.hh"
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struct Depsgraph;
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struct Light;
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struct Main;
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Light *BKE_light_add(Main *bmain, const char *name) ATTR_WARN_UNUSED_RESULT;
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void BKE_light_eval(Depsgraph *depsgraph, Light *la);
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float BKE_light_power(const Light &light);
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blender::float3 BKE_light_color(const Light &light);
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float BKE_light_area(const Light &light, const blender::float4x4 &object_to_world);
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