ea45c776fd
to replace some uses of dfdx/dfdy/differentials. No functional change expected. Pull Request: https://projects.blender.org/blender/blender/pulls/143178
60 lines
1.1 KiB
C++
60 lines
1.1 KiB
C++
/* SPDX-FileCopyrightText: 2025 Blender Foundation
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*
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* SPDX-License-Identifier: Apache-2.0 */
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#pragma once
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#include "util/math_base.h"
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#include "util/types_dual.h"
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CCL_NAMESPACE_BEGIN
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ccl_device_template_spec dual1 make_zero()
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{
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return dual1();
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}
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ccl_device_template_spec dual2 make_zero()
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{
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return dual2();
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}
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ccl_device_template_spec dual3 make_zero()
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{
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return dual3();
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}
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ccl_device_template_spec dual4 make_zero()
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{
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return dual4();
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}
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/* Multiplication of dual by scalar. */
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template<class T1, class T2> ccl_device_inline dual<T1> operator*(const dual<T1> a, T2 b)
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{
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return {a.val * b, a.dx * b, a.dy * b};
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}
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/* Negation. */
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template<class T> ccl_device_inline dual<T> operator-(const ccl_private dual<T> &a)
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{
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return {-a.val, -a.dx, -a.dy};
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}
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template<class T> ccl_device_inline dual1 average(const dual<T> a)
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{
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return {average(a.val), average(a.dx), average(a.dy)};
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}
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template<class T> ccl_device_inline dual1 reduce_add(const dual<T> a)
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{
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return {reduce_add(a.val), reduce_add(a.dx), reduce_add(a.dy)};
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}
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template<class T1, class T2> ccl_device_inline dual1 dot(const dual<T1> a, const T2 b)
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{
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return reduce_add(a * b);
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}
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CCL_NAMESPACE_END
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