Log message:
Update to 3.7.0rc5:
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Changes between 3.7.beta.RC4 and 3.7.RC5
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- This release candidate primarily addresses the crash dump report #357
triggered by non-closed SSLT-enabled mesh inside CSG. This fix also
addressed several issue's with another outstanding bug report.
- The Windows installer and crash dump submitter have been improved.
- Changes to the post processing of the Windows help file corrected the
broken searchable index.
- A couple of bug reports have been addressed.
Fixed or mitigated the following reports:
-----------------------------------------
http://bugs.povray.org/task/12 FS#12 (facets pattern in normal map)
http://bugs.povray.org/task/196 FS#196 (More SSLT Caveats)
http://bugs.povray.org/task/46 FS#239 (improper uid/gid handling)
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Changes between 3.7.beta.RC3 and 3.7.RC4
----------------------------------------
- This release candidate primarily improves upon the SSLT code, but there
are also some other noteworthy enhancements and/or additions.
They are listed below:
- a keyword addition "albedo" it's a new finish attribute
- the iridescence feature has been overhauled
- support was added for tuning brightness of image-mapped sky spheres
- three new tiling patterns were added
- Building from the windows source distribution has also been simplified
- Introduced a new windows installer
- Added AMD optimizations for noise
- A Windows Editor crash fix
- Over two dozen bug reports have addressed
- A few scene file fixes and/or additions
- Updated the Windows help file
Subsurface Light Transport
--------------------------
bugfixes and improvements to SSLT code;
syntax for material definition has changed as follows:
material {
texture {
pigment { PIGMENT }
finish { ...
subsurface { translucency COLOR }
}
}
interior { ior FLOAT }
}
The pigment determines the SSLT material's overall appearance when applied
to an object with sufficiently large structures. The translucency color
(which can alternatively be a float) determines the strength of the
subsurface light transport effect (note that the values may be >1.0; also
note that the effect doesn't scale with the object; instead, to adjust
materials to the dimensions of your scene, use the global mm_per_unit
setting). The material's index of refraction also affects the appearance of
the material, and is mandatory for SSLT materials.
SSLT is now enabled only when a global_settings subsurface block is present;
to enable SSLT but use the default settings, specify an empty block,
i.e. "subsurface{}"
Due to the experimental status of SSLT, there are currently some caveats:
- Incorrect use may result in hard crashes instead of parse warnings.
- Pigments having any zero color components currently don't play nice with
SSLT; for example instead of "rgb 1" you should use something like
"rgb <1,0.05,0.05>".
- A Diffuse finish attribute of zero can cause the program to have an
assertion failure.
- changes to improve robustness regarding low translucency and/or high
mm_per_unit settings for objects in general and blobs in particular
added support for CSG (caveat: unions of overlapping components will cause
unexpected results; use merge instead)
Further Subsurface scattering improvements include:
- added syntax to global subsurface block:
global_settings { subsurface { radiosity BOOL } }
specifies whether subsurface light transport effects should be applied to
incoming radiosity-based diffuse illumination; if this setting is
off (default), subsurface light transport effects will only be applied to
direct illumination from classic light sources. Setting this to on will
improve realism especially for materials with high translucency, but at a
significant cost in rendering time.
- added syntax to global radiosity block:
global_settings { radiosity { subsurface BOOL } }
specifies whether radiosity sampling should honor subsurface light transport;
if this setting is off (default), radiosity-based diffuse illumination is
computed as if the surrounding objects had subsurface light transport turned
off. Setting this to on may improve realism especially in the presence of
materials with high translucency, but at some cost in rendering time.
- Subsurface scattering is disabled in all quality levels except +Q9
or higher.
- More thorough fix to complement change #5425.
- Minor changes to reduce intensity of patterned noise artifacts on
subsurface textures.
Other Noteworthy
----------------
- Added new "albedo" keyword, that can be used right after \
"diffuse",
"phong" or "specular" to specify that the parameter is \
to be taken as the
total diffuse/specular reflectance, rather than peak reflectance. E.g.:
diffuse albedo 0.5 brilliance 2
specular albedo 0.05 roughness 0.001
phong albedo 0.02 phong_size 1000
Note that for brilliance = 1, the "albedo" keyword has no effect on the
diffuse parameter.
- A major overhaul of iridescence feature, which used to be seriously flawed;
syntax remains unchanged, except that both thickness and amount are now
supposed to be specified in microns. The new irid_wavelength default value
is now <0.70, 0.52, 0.48>, so iridescence effects will vary from previous
versions.
- Added support for tuning brightness of image-mapped sky spheres:
Added "emission COLOUR" parameter to sky_sphere, defaulting to [rgb] 1.
Higher values increase the sky sphere brightness accordingly, while lower
values decrease it. While primarily intended for easy tuning of light probe
skies, the parameter also works with procedural sky pigments.
- Added three new "tiling" patterns:
- pattern 25 type (N=6) produces a Penrose P1 tile
- pattern 26 type (N=2) produces a Penrose P2 tile
- pattern 27 type (N=2) produces a Penrose P3 tile
- Added AMD optimizations for noise. Note that these are currently disabled.
Windows Source Build:
---------------------
A subset of the Boost 1.45.0 and openEXR 1.6.1 libraries have been added to
the windows source distribution so that users can easily build thier own
statically linked binary from scratch. Added "Console" and \
"Console-SSE2"
configurations to VS10 solution, but needs to be back-ported to VS8/9 as
there is no debug configuration yet. Extensive testing still required ...
expect shellout to be stil
----------------------
- The crash reporter tool has been reworked to always generate both full and
mini dumps because often insufficient information was available to resolve
the crash, consequently compression support was also added.
- A w--------------
Introduced a new windows version NSIS based installer, further improvements
pending. Currently there are a few caveats:
- It won't ask you to uninstall the old beta (don't use MSI anymore)
- It won't object if you try to re-instal7 as it allows installation
to the program files directory (the default now).
Fixed or mitigated the following reports:
-----------------------------------------
http://bugs.povray.org/task/9 FS#9 (sky_sphere brightness tuning)
http://bugs.povmination enhancement)
http://bugs.povray.org/task/156 FS#156 (crash reading empty DF3 file)
http://bugs.povray.org/task/165 FS#165 (projected image_map is clipped)
http://bugs.povray.org/task/166 FS#166 (quick_color does not work)
http://bugs.(photon memory leak)
http://bugs.povray.org/task/185 FS#185 (wrong image resolution reported)
http://bugs.povray.org/task/190 FS#190 (photon message reporting)
http://bugs.povray.org/task/191 FS#191 (interpolated image_map artifacts)
http://bu a no-op)
http://bugs.povray.org/task/198 FS#198 (missing braces in funtion)
http://bugs.povray.org/task/199 FS#199 (scene file typos)
http://bugs.povray.org/task/200 FS#200 (Calibri TrueType font garbled)
http://bugs.povray.org/task/203 FS#gs.povray.org/task/208 FS#208 \
(use-after-free when returning)
http://bugs.povray.org/task/209 FS#209 (weighted texture of CSG)
http://bugs.povray.org/task/210 FS#210 (UV mapping broken for parametric)
http://bugs.povray.org/task/213 FS#213 e command-line)
http://bugs.povray.org/task/215 FS#215 (double error reporting)
http://bugs.povray.org/task/216 FS#216 (obsolete option in raddem.ini file)
http://bugs.povray.org/task/221 FS#221 (crash undefinded looks_like object)
http://bugs.povray.org/task/225 FS#225 (looks_like texture translate fix)
http://bugs.povray.org/task/235 FS#235 (unix segmentation fault)
Scene file updates and additions:
---------------------------------
Updated the tiling pattern scene file:
~scenes/textures/patterns/tiling.pov
Updated the SSLT scene file:
~scenes/subsurface/subsurface.pov
Added these mesh_camera scene files:
~scenes/camera/mesh_camea/ess/ess-ortho-camera.pov
~scenes/camera/mesh_camea/ess/ess-persp-camera.pov
~scenes/camera/mesh_camea/ess/ortho-camera.pov
~scenes/camera/mesh_camea/ess/persp-camera.pov
Added a missing scene file:
~scenes/bsp/Tango.pov
Added a new tiling pattern scene file:
~scenes/textures/patterns/tiling.pov
Fixed two macros in ~includes/shapes.inc:
- HFCreate_ : output formatting
- Bevelled_Text : suppress "bound_by" warnings
Removed an obsolete directive that aborted the render:
~scenes/animations/raddem/raddem.ini
Removed obsolete comments (Library_Path limitation) from povray.ini
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