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!
233 lines
7.8 KiB
C
233 lines
7.8 KiB
C
/*
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* Copyright 2011-2013 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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/* Templated common implementation part of all CPU kernels.
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*
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* The idea is that particular .cpp files sets needed optimization flags and
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* simply includes this file without worry of copying actual implementation over.
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*/
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#include "kernel/kernel_compat_cpu.h"
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#ifndef __SPLIT_KERNEL__
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# include "kernel/kernel_math.h"
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# include "kernel/kernel_types.h"
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# include "kernel/split/kernel_split_data.h"
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# include "kernel/kernel_globals.h"
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# include "kernel/kernels/cpu/kernel_cpu_image.h"
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# include "kernel/kernel_film.h"
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# include "kernel/kernel_path.h"
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# include "kernel/kernel_path_branched.h"
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# include "kernel/kernel_bake.h"
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#else
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# include "kernel/split/kernel_split_common.h"
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# include "kernel/split/kernel_data_init.h"
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# include "kernel/split/kernel_path_init.h"
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# include "kernel/split/kernel_scene_intersect.h"
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# include "kernel/split/kernel_lamp_emission.h"
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# include "kernel/split/kernel_do_volume.h"
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# include "kernel/split/kernel_queue_enqueue.h"
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# include "kernel/split/kernel_indirect_background.h"
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# include "kernel/split/kernel_shader_setup.h"
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# include "kernel/split/kernel_shader_sort.h"
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# include "kernel/split/kernel_shader_eval.h"
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# include "kernel/split/kernel_holdout_emission_blurring_pathtermination_ao.h"
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# include "kernel/split/kernel_subsurface_scatter.h"
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# include "kernel/split/kernel_direct_lighting.h"
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# include "kernel/split/kernel_shadow_blocked_ao.h"
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# include "kernel/split/kernel_shadow_blocked_dl.h"
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# include "kernel/split/kernel_next_iteration_setup.h"
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# include "kernel/split/kernel_indirect_subsurface.h"
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# include "kernel/split/kernel_buffer_update.h"
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#endif
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#ifdef KERNEL_STUB
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# include "util/util_debug.h"
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# define STUB_ASSERT(arch, name) assert(!(#name " kernel stub for architecture " #arch " was called!"))
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#endif
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CCL_NAMESPACE_BEGIN
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#ifndef __SPLIT_KERNEL__
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/* Path Tracing */
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void KERNEL_FUNCTION_FULL_NAME(path_trace)(KernelGlobals *kg,
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float *buffer,
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unsigned int *rng_state,
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int sample,
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int x, int y,
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int offset,
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int stride)
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{
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#ifdef KERNEL_STUB
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STUB_ASSERT(KERNEL_ARCH, path_trace);
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#else
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# ifdef __BRANCHED_PATH__
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if(kernel_data.integrator.branched) {
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kernel_branched_path_trace(kg,
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buffer,
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rng_state,
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sample,
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x, y,
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offset,
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stride);
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}
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else
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# endif
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{
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kernel_path_trace(kg, buffer, rng_state, sample, x, y, offset, stride);
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}
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#endif /* KERNEL_STUB */
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}
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/* Film */
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void KERNEL_FUNCTION_FULL_NAME(convert_to_byte)(KernelGlobals *kg,
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uchar4 *rgba,
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float *buffer,
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float sample_scale,
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int x, int y,
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int offset,
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int stride)
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{
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#ifdef KERNEL_STUB
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STUB_ASSERT(KERNEL_ARCH, convert_to_byte);
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#else
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kernel_film_convert_to_byte(kg,
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rgba,
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buffer,
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sample_scale,
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x, y,
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offset,
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stride);
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#endif /* KERNEL_STUB */
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}
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void KERNEL_FUNCTION_FULL_NAME(convert_to_half_float)(KernelGlobals *kg,
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uchar4 *rgba,
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float *buffer,
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float sample_scale,
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int x, int y,
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int offset,
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int stride)
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{
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#ifdef KERNEL_STUB
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STUB_ASSERT(KERNEL_ARCH, convert_to_half_float);
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#else
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kernel_film_convert_to_half_float(kg,
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rgba,
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buffer,
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sample_scale,
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x, y,
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offset,
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stride);
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#endif /* KERNEL_STUB */
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}
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/* Shader Evaluate */
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void KERNEL_FUNCTION_FULL_NAME(shader)(KernelGlobals *kg,
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uint4 *input,
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float4 *output,
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float *output_luma,
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int type,
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int filter,
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int i,
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int offset,
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int sample)
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{
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#ifdef KERNEL_STUB
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STUB_ASSERT(KERNEL_ARCH, shader);
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#else
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if(type >= SHADER_EVAL_BAKE) {
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kernel_assert(output_luma == NULL);
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# ifdef __BAKING__
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kernel_bake_evaluate(kg,
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input,
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output,
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(ShaderEvalType)type,
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filter,
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i,
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offset,
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sample);
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# endif
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}
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else {
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kernel_shader_evaluate(kg,
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input,
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output,
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output_luma,
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(ShaderEvalType)type,
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i,
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sample);
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}
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#endif /* KERNEL_STUB */
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}
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#else /* __SPLIT_KERNEL__ */
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/* Split Kernel Path Tracing */
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#ifdef KERNEL_STUB
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# define DEFINE_SPLIT_KERNEL_FUNCTION(name) \
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void KERNEL_FUNCTION_FULL_NAME(name)(KernelGlobals *kg, KernelData* /*data*/) \
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{ \
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STUB_ASSERT(KERNEL_ARCH, name); \
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}
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#else
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# define DEFINE_SPLIT_KERNEL_FUNCTION(name) \
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void KERNEL_FUNCTION_FULL_NAME(name)(KernelGlobals *kg, KernelData* /*data*/) \
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{ \
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kernel_##name(kg); \
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}
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#endif /* KERNEL_STUB */
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#define DEFINE_SPLIT_KERNEL_FUNCTION_LOCALS(name, type) \
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void KERNEL_FUNCTION_FULL_NAME(name)(KernelGlobals *kg, KernelData* /*data*/) \
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{ \
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ccl_local type locals; \
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kernel_##name(kg, &locals); \
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}
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DEFINE_SPLIT_KERNEL_FUNCTION(path_init)
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DEFINE_SPLIT_KERNEL_FUNCTION(scene_intersect)
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DEFINE_SPLIT_KERNEL_FUNCTION(lamp_emission)
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DEFINE_SPLIT_KERNEL_FUNCTION(do_volume)
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DEFINE_SPLIT_KERNEL_FUNCTION_LOCALS(queue_enqueue, QueueEnqueueLocals)
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DEFINE_SPLIT_KERNEL_FUNCTION(indirect_background)
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DEFINE_SPLIT_KERNEL_FUNCTION_LOCALS(shader_setup, uint)
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DEFINE_SPLIT_KERNEL_FUNCTION_LOCALS(shader_sort, ShaderSortLocals)
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DEFINE_SPLIT_KERNEL_FUNCTION(shader_eval)
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DEFINE_SPLIT_KERNEL_FUNCTION_LOCALS(holdout_emission_blurring_pathtermination_ao, BackgroundAOLocals)
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DEFINE_SPLIT_KERNEL_FUNCTION(subsurface_scatter)
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DEFINE_SPLIT_KERNEL_FUNCTION_LOCALS(direct_lighting, uint)
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DEFINE_SPLIT_KERNEL_FUNCTION(shadow_blocked_ao)
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DEFINE_SPLIT_KERNEL_FUNCTION(shadow_blocked_dl)
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DEFINE_SPLIT_KERNEL_FUNCTION_LOCALS(next_iteration_setup, uint)
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DEFINE_SPLIT_KERNEL_FUNCTION(indirect_subsurface)
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DEFINE_SPLIT_KERNEL_FUNCTION_LOCALS(buffer_update, uint)
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#endif /* __SPLIT_KERNEL__ */
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#undef KERNEL_STUB
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#undef STUB_ASSERT
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#undef KERNEL_ARCH
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CCL_NAMESPACE_END
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