forked from bartvdbraak/blender
43b374e8c5
This commit contains the first part of the new Cycles denoising option, which filters the resulting image using information gathered during rendering to get rid of noise while preserving visual features as well as possible. To use the option, enable it in the render layer options. The default settings fit a wide range of scenes, but the user can tweak individual settings to control the tradeoff between a noise-free image, image details, and calculation time. Note that the denoiser may still change in the future and that some features are not implemented yet. The most important missing feature is animation denoising, which uses information from multiple frames at once to produce a flicker-free and smoother result. These features will be added in the future. Finally, thanks to all the people who supported this project: - Google (through the GSoC) and Theory Studios for sponsoring the development - The authors of the papers I used for implementing the denoiser (more details on them will be included in the technical docs) - The other Cycles devs for feedback on the code, especially Sergey for mentoring the GSoC project and Brecht for the code review! - And of course the users who helped with testing, reported bugs and things that could and/or should work better!
120 lines
3.2 KiB
C
120 lines
3.2 KiB
C
/*
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* Copyright 2011-2017 Blender Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __UTIL_MATH_INT4_H__
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#define __UTIL_MATH_INT4_H__
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#ifndef __UTIL_MATH_H__
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# error "Do not include this file directly, include util_types.h instead."
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#endif
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CCL_NAMESPACE_BEGIN
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/*******************************************************************************
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* Declaration.
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*/
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#ifndef __KERNEL_GPU__
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ccl_device_inline int4 operator+(const int4& a, const int4& b);
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ccl_device_inline int4 operator+=(int4& a, const int4& b);
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ccl_device_inline int4 operator>>(const int4& a, int i);
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ccl_device_inline int4 min(int4 a, int4 b);
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ccl_device_inline int4 max(int4 a, int4 b);
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ccl_device_inline int4 clamp(const int4& a, const int4& mn, const int4& mx);
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ccl_device_inline int4 select(const int4& mask, const int4& a, const int4& b);
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#endif /* __KERNEL_GPU__ */
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/*******************************************************************************
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* Definition.
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*/
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#ifndef __KERNEL_GPU__
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ccl_device_inline int4 operator+(const int4& a, const int4& b)
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{
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#ifdef __KERNEL_SSE__
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return int4(_mm_add_epi32(a.m128, b.m128));
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#else
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return make_int4(a.x+b.x, a.y+b.y, a.z+b.z, a.w+b.w);
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#endif
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}
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ccl_device_inline int4 operator+=(int4& a, const int4& b)
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{
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return a = a + b;
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}
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ccl_device_inline int4 operator>>(const int4& a, int i)
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{
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#ifdef __KERNEL_SSE__
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return int4(_mm_srai_epi32(a.m128, i));
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#else
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return make_int4(a.x >> i, a.y >> i, a.z >> i, a.w >> i);
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#endif
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}
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ccl_device_inline int4 min(int4 a, int4 b)
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{
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#if defined(__KERNEL_SSE__) && defined(__KERNEL_SSE41__)
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return int4(_mm_min_epi32(a.m128, b.m128));
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#else
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return make_int4(min(a.x, b.x), min(a.y, b.y), min(a.z, b.z), min(a.w, b.w));
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#endif
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}
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ccl_device_inline int4 max(int4 a, int4 b)
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{
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#if defined(__KERNEL_SSE__) && defined(__KERNEL_SSE41__)
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return int4(_mm_max_epi32(a.m128, b.m128));
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#else
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return make_int4(max(a.x, b.x), max(a.y, b.y), max(a.z, b.z), max(a.w, b.w));
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#endif
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}
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ccl_device_inline int4 clamp(const int4& a, const int4& mn, const int4& mx)
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{
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return min(max(a, mn), mx);
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}
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ccl_device_inline int4 select(const int4& mask, const int4& a, const int4& b)
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{
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#ifdef __KERNEL_SSE__
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const __m128 m = _mm_cvtepi32_ps(mask);
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/* TODO(sergey): avoid cvt. */
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return int4(_mm_castps_si128(
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_mm_or_ps(_mm_and_ps(m, _mm_castsi128_ps(a)),
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_mm_andnot_ps(m, _mm_castsi128_ps(b)))));
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#else
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return make_int4((mask.x)? a.x: b.x,
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(mask.y)? a.y: b.y,
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(mask.z)? a.z: b.z,
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(mask.w)? a.w: b.w);
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#endif
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}
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ccl_device_inline int4 load_int4(const int *v)
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{
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#ifdef __KERNEL_SSE__
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return int4(_mm_loadu_si128((__m128i*)v));
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#else
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return make_int4(v[0], v[1], v[2], v[3]);
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#endif
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}
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#endif /* __KERNEL_GPU__ */
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CCL_NAMESPACE_END
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#endif /* __UTIL_MATH_INT4_H__ */
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