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blender-archive/intern/cycles/util
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Sebastian Herhoz 75a6d3abf7 Cycles: add Path Guiding on CPU through Intel OpenPGL 
This adds path guiding features into Cycles by integrating Intel's Open Path
Guiding Library. It can be enabled in the Sampling > Path Guiding panel in the
render properties.

This feature helps reduce noise in scenes where finding a path to light is
difficult for regular path tracing.

The current implementation supports guiding directional sampling decisions on
surfaces, when the material contains a least one diffuse component, and in
volumes with isotropic and anisotropic Henyey-Greenstein phase functions.

On surfaces, the guided sampling decision is proportional to the product of
the incident radiance and the normal-oriented cosine lobe and in volumes it
is proportional to the product of the incident radiance and the phase function.

The incident radiance field of a scene is learned and updated during rendering
after each per-frame rendering iteration/progression.

At the moment, path guiding is only supported by the CPU backend. Support for
GPU backends will be added in future versions of OpenPGL.

Ref T92571

Differential Revision: https://developer.blender.org/D15286
2022-09-27 15:56:32 +02:00
..
algorithm.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
aligned_malloc.cpp
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
aligned_malloc.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
args.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
array.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
atomic.h
Cycles: Add support for rendering on Intel GPUs using oneAPI
2022-06-29 12:58:04 +02:00
avxb.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
avxf.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
avxi.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
boundbox.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
CMakeLists.txt
Cycles: add Path Guiding on CPU through Intel OpenPGL
2022-09-27 15:56:32 +02:00
color.h
Cycles: unify math functions names
2022-06-23 15:02:53 +02:00
debug.cpp
Cleanup: minor changes to DebugFlags
2022-08-11 17:03:10 +02:00
debug.h
Cleanup: minor changes to DebugFlags
2022-08-11 17:03:10 +02:00
defines.h
Merge branch 'blender-v3.3-release'
2022-08-19 21:02:02 +02:00
deque.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
disjoint_set.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
foreach.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
function.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
guarded_allocator.cpp
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
guarded_allocator.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
guiding.h
Cycles: add Path Guiding on CPU through Intel OpenPGL
2022-09-27 15:56:32 +02:00
half.h
Cycles: Add support for rendering on Intel GPUs using oneAPI
2022-06-29 12:58:04 +02:00
hash.h
Cycles: improve Progressive Multi-Jittered sampling
2022-09-01 14:57:39 +02:00
ies.cpp
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
ies.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
image_impl.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
image.h
Cycles: load 8 bit image textures as half float for some color spaces
2022-06-02 18:04:38 +02:00
list.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
log.cpp
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
log.h
Cleanup: add verbose logging category names instead of numbers
2022-06-17 14:08:14 +02:00
map.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
math_cdf.cpp
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
math_cdf.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
math_fast.h
Cleanup: remove __KERNEL_CPU__
2022-07-25 17:43:35 +02:00
math_float2.h
Cycles: approximate shadow caustics using manifold next event estimation
2022-04-01 17:45:39 +02:00
math_float3.h
Cycles: more closely match some math and intersection operations in Embree
2022-07-25 13:27:40 +02:00
math_float4.h
Cycles: add more math functions for float4
2022-06-30 16:25:21 +02:00
math_float8.h
Fix Cycles Metal build errors after recent changes
2022-07-26 00:17:37 +02:00
math_int2.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
math_int3.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
math_int4.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
math_intersect.h
Cycles: improve ray tracing precision near triangle edges
2022-08-09 18:42:01 +02:00
math_matrix.h
Cleanup: use make_float4(f) zero_float4() to simplify code
2022-03-23 20:06:12 +01:00
math.h
Mikktspace: Optimized port to C++
2022-09-07 00:35:44 +02:00
md5.cpp
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
md5.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
murmurhash.cpp
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
murmurhash.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
opengl.h
GPU: replace GLEW with libepoxy
2022-08-15 16:10:29 +02:00
openimagedenoise.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
openvdb.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
optimization.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
param.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
path.cpp
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
path.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
profiling.cpp
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
profiling.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
progress.h
Cycles: take into account time limit for progress bar
2022-08-11 19:37:18 +02:00
projection.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
queue.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
rect.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
semaphore.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
set.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
simd.cpp
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
simd.h
Cleanup: clang-format
2022-04-13 13:45:42 +10:00
sseb.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
ssef.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
ssei.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
stack_allocator.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
static_assert.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
stats.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
string.cpp
Cycles: Apple Silicon optimization to specialize intersection kernels
2022-07-15 13:40:04 +02:00
string.h
Cycles: Apple Silicon optimization to specialize intersection kernels
2022-07-15 13:40:04 +02:00
system.cpp
Cleanup: simplify CPU instruction checking
2022-08-09 16:59:05 +02:00
system.h
Cleanup: simplify CPU instruction checking
2022-08-09 16:59:05 +02:00
task.cpp
Cleanup: add verbose logging category names instead of numbers
2022-06-17 14:08:14 +02:00
task.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
tbb.h
Fix T97498, T97651: crash in Cycles with TBB 2021 after recent changes
2022-04-28 00:24:13 +02:00
texture.h
Cycles: Add half precision float support for volumes with NanoVDB
2022-05-23 19:08:01 +02:00
thread.cpp
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
thread.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
time.cpp
Cycles: unify math functions names
2022-06-23 15:02:53 +02:00
time.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
transform_avx2.cpp
Cycles: make transform inverse match Embree exactly
2022-08-09 16:59:05 +02:00
transform_inverse.h
Cycles: make transform inverse match Embree exactly
2022-08-09 16:59:05 +02:00
transform_sse41.cpp
Cycles: make transform inverse match Embree exactly
2022-08-09 16:59:05 +02:00
transform.cpp
Cycles: make transform inverse match Embree exactly
2022-08-09 16:59:05 +02:00
transform.h
Cycles: make transform inverse match Embree exactly
2022-08-09 16:59:05 +02:00
types_float2_impl.h
Cleanup: make vector types make/print functions consistent between CPU and GPU
2022-08-09 16:07:23 +02:00
types_float2.h
Cleanup: make vector types make/print functions consistent between CPU and GPU
2022-08-09 16:07:23 +02:00
types_float3_impl.h
Cleanup: make vector types make/print functions consistent between CPU and GPU
2022-08-09 16:07:23 +02:00
types_float3.h
Cleanup: make vector types make/print functions consistent between CPU and GPU
2022-08-09 16:07:23 +02:00
types_float4_impl.h
Cleanup: make vector types make/print functions consistent between CPU and GPU
2022-08-09 16:07:23 +02:00
types_float4.h
Cleanup: make vector types make/print functions consistent between CPU and GPU
2022-08-09 16:07:23 +02:00
types_float8_impl.h
Cleanup: simplifications and consistency for vector types
2022-07-28 21:27:13 +02:00
types_float8.h
Cleanup: simplifications and consistency for vector types
2022-07-28 21:27:13 +02:00
types_int2_impl.h
Cleanup: simplifications and consistency for vector types
2022-07-28 21:27:13 +02:00
types_int2.h
Cleanup: simplifications and consistency for vector types
2022-07-28 21:27:13 +02:00
types_int3_impl.h
Cleanup: make vector types make/print functions consistent between CPU and GPU
2022-08-09 16:07:23 +02:00
types_int3.h
Cleanup: make vector types make/print functions consistent between CPU and GPU
2022-08-09 16:07:23 +02:00
types_int4_impl.h
Cleanup: make vector types make/print functions consistent between CPU and GPU
2022-08-09 16:07:23 +02:00
types_int4.h
Cleanup: make vector types make/print functions consistent between CPU and GPU
2022-08-09 16:07:23 +02:00
types_spectrum.h
Cycles: add new Spectrum and PackedSpectrum types
2022-08-09 16:49:34 +02:00
types_uchar2_impl.h
Cleanup: simplifications and consistency for vector types
2022-07-28 21:27:13 +02:00
types_uchar2.h
Cleanup: simplifications and consistency for vector types
2022-07-28 21:27:13 +02:00
types_uchar3_impl.h
Cleanup: simplifications and consistency for vector types
2022-07-28 21:27:13 +02:00
types_uchar3.h
Cleanup: simplifications and consistency for vector types
2022-07-28 21:27:13 +02:00
types_uchar4_impl.h
Cleanup: simplifications and consistency for vector types
2022-07-28 21:27:13 +02:00
types_uchar4.h
Cleanup: simplifications and consistency for vector types
2022-07-28 21:27:13 +02:00
types_uint2_impl.h
Cleanup: simplifications and consistency for vector types
2022-07-28 21:27:13 +02:00
types_uint2.h
Cleanup: simplifications and consistency for vector types
2022-07-28 21:27:13 +02:00
types_uint3_impl.h
Cleanup: simplifications and consistency for vector types
2022-07-28 21:27:13 +02:00
types_uint3.h
Cleanup: simplifications and consistency for vector types
2022-07-28 21:27:13 +02:00
types_uint4_impl.h
Cleanup: simplifications and consistency for vector types
2022-07-28 21:27:13 +02:00
types_uint4.h
Cleanup: simplifications and consistency for vector types
2022-07-28 21:27:13 +02:00
types_ushort4.h
Cleanup: simplifications and consistency for vector types
2022-07-28 21:27:13 +02:00
types.h
Cycles: add new Spectrum and PackedSpectrum types
2022-08-09 16:49:34 +02:00
unique_ptr.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
vector.h
Cleanup: simplify CPU instruction checking
2022-08-09 16:59:05 +02:00
version.h
Cycles: sync changes from standalone repository
2022-09-18 17:34:23 +02:00
windows.cpp
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
windows.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00
xml.h
Cycles: use SPDX license headers
2022-02-11 17:47:34 +01:00