[Bf-committers] Re: [Bf-blender-cvs] CVS commit:
blender/source/blender/blenlib BLI_rand.h
blender/source/blender/blenlib/intern rand.c
blender/source/blender/makesdna DNA_world_types.h
blender/source/blender/render/extern/include render.h
blender/source/blender/render/intern/source initrender.c
ray.c rendercore.c ...
Daniel Dunbar
evilzr at yahoo.com
Thu Aug 25 19:48:48 CEST 2005
The seeding was the same as drand48, shouldn't
be too bad?
Anyway, doesn't matter, but perhaps it is worth
getting a real random number generator in Blender,
Mersenne Twister is pretty popular and good I
think. Is there reason to expect a quality gain?
--- Ton Roosendaal <ton at blender.org> wrote:
> ton (Ton Roosendaal) 2005/08/25 15:11:04 CEST
>
> Modified files:
> blender/source/blender/blenlib BLI_rand.h
> blender/source/blender/blenlib/intern rand.c
> blender/source/blender/makesdna DNA_world_types.h
> blender/source/blender/render/extern/include render.h
> blender/source/blender/render/intern/source initrender.c ray.c
> rendercore.c
> blender/source/blender/renderconverter/intern
> convertBlenderScene.c
> blender/source/blender/src previewrender.c
>
> Log:
> Random() issues with rendering...
>
> - AO and soft shadow AreaLight tables were generated without fixed seed,
> causing animations to give unwanted amounts of noise.
> - Made sure these tables now are calculated before render, with fixed seed
> - Then found out the BLI_rand() has very bad seeding... it showed up as
> patterns. After some experimenting, found a nice method using noise.c
> hash tables. For compatibility with old code, named it BLI_srandom() to
> use this next to the BLI_srand(). This follows libc rand() and random()
> naming convention.
> - Then of course threading should work... so made a BLI_thread_rand version
> of the calls. Now supports up to 16 threads, comments added in .h and .c
>
> Result is stable animation render with AO and soft shadow. But, please
> test and feedback!
>
> Revision Changes Path
> 1.9 +19 -1 blender/source/blender/blenlib/BLI_rand.h
>
>
<http://projects.blender.org/viewcvs/viewcvs.cgi/blender/source/blender/blenlib/BLI_rand.h.diff?r1=1.8&r2=1.9&cvsroot=bf-blender>
> 1.8 +39 -3 blender/source/blender/blenlib/intern/rand.c
>
>
<http://projects.blender.org/viewcvs/viewcvs.cgi/blender/source/blender/blenlib/intern/rand.c.diff?r1=1.7&r2=1.8&cvsroot=bf-blender>
> 1.18 +3 -3 blender/source/blender/makesdna/DNA_world_types.h
>
>
<http://projects.blender.org/viewcvs/viewcvs.cgi/blender/source/blender/makesdna/DNA_world_types.h.diff?r1=1.17&r2=1.18&cvsroot=bf-blender>
> 1.17 +8 -1 blender/source/blender/render/extern/include/render.h
>
>
<http://projects.blender.org/viewcvs/viewcvs.cgi/blender/source/blender/render/extern/include/render.h.diff?r1=1.16&r2=1.17&cvsroot=bf-blender>
> 1.64 +3 -7 blender/source/blender/render/intern/source/initrender.c
>
>
<http://projects.blender.org/viewcvs/viewcvs.cgi/blender/source/blender/render/intern/source/initrender.c.diff?r1=1.63&r2=1.64&cvsroot=bf-blender>
> 1.62 +55 -81 blender/source/blender/render/intern/source/ray.c
>
>
<http://projects.blender.org/viewcvs/viewcvs.cgi/blender/source/blender/render/intern/source/ray.c.diff?r1=1.61&r2=1.62&cvsroot=bf-blender>
> 1.123 +16 -6 blender/source/blender/render/intern/source/rendercore.c
>
>
<http://projects.blender.org/viewcvs/viewcvs.cgi/blender/source/blender/render/intern/source/rendercore.c.diff?r1=1.122&r2=1.123&cvsroot=bf-blender>
> 1.161 +21 -9 blender/source/blender/renderconverter/intern/convertBlenderScene.c
>
>
<http://projects.blender.org/viewcvs/viewcvs.cgi/blender/source/blender/renderconverter/intern/convertBlenderScene.c.diff?r1=1.160&r2=1.161&cvsroot=bf-blender>
> 1.60 +2 -2 blender/source/blender/src/previewrender.c
>
>
<http://projects.blender.org/viewcvs/viewcvs.cgi/blender/source/blender/src/previewrender.c.diff?r1=1.59&r2=1.60&cvsroot=bf-blender>
> _______________________________________________
> Bf-blender-cvs mailing list
> Bf-blender-cvs at projects.blender.org
> http://projects.blender.org/mailman/listinfo/bf-blender-cvs
>
daniel dunbar
More information about the Bf-committers
mailing list