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Antony Ryakiotakis 08c1f5bf33 Cycles: Improve sampling of area lights 
This patch uses the sampling method described in "A Low Distortion Map Between Triangle and Square" by Eric Heitz.
The benefit is avoiding sqrt in the calculation, which could be cheaper on some architectures, and the result is
more even sampling across the triangle surface.

Based on ideas from
https://pharr.org/matt/blog/2019/02/27/triangle-sampling-1.html
https://pharr.org/matt/blog/2019/03/13/triangle-sampling-1.5.html

Reviewed By: Brecht Van Lommel

Differential Revision: https://developer.blender.org/D6566
2020-05-23 14:21:49 +02:00
..
atomic
Cleanup: make format after SortedIncludes change
2020-03-19 09:33:58 +01:00
audaspace
Cleanup: make format after SortedIncludes change
2020-03-19 09:33:58 +01:00
clog
Cleanup: make format after SortedIncludes change
2020-03-19 09:33:58 +01:00
cycles
Cycles: Improve sampling of area lights
2020-05-23 14:21:49 +02:00
dualcon
Cleanup: redundant parenthesis, NULL checks
2020-04-20 12:15:49 +10:00
eigen
Cleanup: make format after SortedIncludes change
2020-03-19 09:33:58 +01:00
ffmpeg
Cleanup: make format after SortedIncludes change
2020-03-19 09:33:58 +01:00
ghost
Wayland: support key repeat
2020-05-22 18:09:17 +10:00
glew-mx
ClangFormat: apply to source, most of intern
2019-04-17 06:21:24 +02:00
guardedalloc
Cleanup: make guarded memory allocation always thread safe
2020-05-20 01:03:05 +02:00
iksolver
Cleanup: make format after SortedIncludes change
2020-03-19 09:33:58 +01:00
itasc
Cleanup: use 2 space indentation for CMake
2019-04-17 06:35:54 +02:00
libc_compat
Build: change libc compatibility code to only be used for new glibc
2020-02-27 12:52:19 +01:00
libmv
Libmv: Fix crash solving when having negative frames
2020-05-15 14:59:25 +02:00
locale
Cleanup: make format after SortedIncludes change
2020-03-19 09:33:58 +01:00
mantaflow
Merge branch 'blender-v2.83-release'
2020-05-19 21:23:54 +02:00
memutil
Cleanup: doxy comments
2020-05-09 17:36:12 +10:00
mikktspace
Cleanup: make format after SortedIncludes change
2020-03-19 09:33:58 +01:00
numaapi
Fix numaapi on PowerPC platforms
2020-01-15 11:18:24 +01:00
opencolorio
Cleanup: make format after SortedIncludes change
2020-03-19 09:33:58 +01:00
opensubdiv
OpenSubdiv: Remove old GPU code
2020-05-19 21:35:47 +02:00
openvdb
Cleanup: make format after SortedIncludes change
2020-03-19 09:33:58 +01:00
quadriflow
Cleanup: cmake indentation
2020-03-04 11:02:35 +11:00
rigidbody
Cleanup: doxy comments
2020-05-09 17:36:12 +10:00
utfconv
Cleanup: make format after SortedIncludes change
2020-03-19 09:33:58 +01:00
CMakeLists.txt
Cleanup: remove unused string module
2020-04-28 12:57:39 +02:00