Similar to the Principled BSDF, this should make it easier to set up volume
materials. Smoke and fire can be rendererd with just a single principled
volume node, the appropriate attributes will be used when available. The node
also works for simpler homogeneous volumes like water or mist.
Differential Revision: https://developer.blender.org/D3033
This adds midlevel and object/world space for displacement, and a
vector displacement node with tangent/object/world space, midlevel
and scale.
Note that tangent space vector displacement still is not exactly
compatible with maps created by other software, this will require
changes to the tangent computation.
Differential Revision: https://developer.blender.org/D1734
This converts object space height to world space displacement, to be
linked to the new vector displacement material output.
Differential Revision: https://developer.blender.org/D3015
How to use:
- Enable subsurface scattering in the render options.
- Add Subsurface BSDF to your shader.
- Check "Screen Space Subsurface Scattering" in the material panel options.
This initial implementation has a few limitations:
- only supports gaussian SSS.
- Does not support principled shader.
- The radius parameters is baked down to a number of samples and then put into an UBO. This means the radius input socket cannot be used. You need to tweak the default vector directly.
- The "texture blur" is considered as always set to 1
The algorithm averages normals from nearby surfaces. It uses the same
sampling strategy as BSSRDFs, casting rays along the normal and two
orthogonal axes, and combining the samples with MIS.
The main concern here is that we are introducing raytracing inside
shader evaluation, which could be quite bad for GPU performance and
stack memory usage. In practice it doesn't seem so bad though.
Note that using this feature can easily slow down renders 20%, and
that if you care about performance then it's better to use a bevel
modifier. Mainly this is useful for baking, and for cases where the
mesh topology makes it difficult for the bevel modifier to work well.
Differential Revision: https://developer.blender.org/D2803
Engine is not stored in WorkSpaces. That defines the "context" engine, which
is used for the entire UI.
The engine used for the poll of nodes (add node menu, new nodes when "Use Nodes")
is obtained from context.
Introduce a ViewRender struct for viewport settings that are defined for
workspaces and scene. This struct will be populated with the hand-picked
settings that can be defined per workspace as per the 2.8 design.
* use_scene_settings
* properties editor: workshop + organize context path
Use Scene Settings
==================
For viewport drawing, Workspaces have an option to use the Scene render
settings (F12) instead of the viewport settings.
This way users can quickly preview the final render settings, engine and
View Layer. This will affect all the editors in that workspace, and it will be
clearly indicated in the top-bar.
Properties Editor: Add Workspace and organize context path
==========================================================
We now have the properties of:
Scene, Scene > Layer, Scene > World, Workspace
[Scene | Workspace] > Render Layer > Object
[Scene | Workspace] > Render Layer > Object > Data
(...)
Reviewers: Campbell Barton, Julian Eisel
Differential Revision: https://developer.blender.org/D2842
Since we started supporting the (Cycles) Material Output old files
stopped working. There is no reason to keep the original Eevee material
otuput anymore.
It includes doversion for old files.
This makes the node menus aware of the Cycles/Eevee distinction, and
only show the relevant nodes for the current engine. Names have also
been changed to accomodate for the new output node system.
This makes Eevee consistent with Cycles, by having a single output node,
and multiple shader nodes that connect to it.
Note that node systems for Eevee saved before this will be missing the
output node, and thus will show an invalid material. This is easily
resolved by connecting the shader output to a new output node.
commit 90778901c9
Merge: 76eebd93bf0026
Author: Schoen <schoepas@deher1m1598.emea.adsint.biz>
Date: Mon Apr 3 07:52:05 2017 +0200
Merge branch 'master' into cycles_disney_brdf
commit 76eebd9379
Author: Schoen <schoepas@deher1m1598.emea.adsint.biz>
Date: Thu Mar 30 15:34:20 2017 +0200
Updated copyright for the new files.
commit 013f4a152a
Author: Schoen <schoepas@deher1m1598.emea.adsint.biz>
Date: Thu Mar 30 15:32:55 2017 +0200
Switched from multiplication of base and subsurface color to blending
between them using the subsurface parameter.
commit 482ec5d1f2
Author: Schoen <schoepas@deher1m1598.emea.adsint.biz>
Date: Mon Mar 13 15:47:12 2017 +0100
Fixed a bug that caused an additional white diffuse closure call when using
path tracing.
commit 26e906d162
Merge: 0593b8c223aff9
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Mon Feb 6 11:32:31 2017 +0100
Merge branch 'master' into cycles_disney_brdf
commit 0593b8c51b
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Mon Feb 6 11:30:36 2017 +0100
Fixed the broken GLSL shader and implemented the Disney BRDF in the
real-time view port.
commit 8c7e11423b
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Fri Feb 3 14:24:05 2017 +0100
Fix to comply strict compiler flags and some code cleanup
commit 17724e9d2d
Merge: 379ba34520afa2
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Tue Jan 24 09:59:58 2017 +0100
Merge branch 'master' into cycles_disney_brdf
commit 379ba346b0
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Tue Jan 24 09:28:56 2017 +0100
Renamed the Disney BSDF to Principled BSDF.
commit f80dcb4f34
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Fri Dec 2 13:55:12 2016 +0100
Removed reflection call when roughness is low because of artifacts.
commit 732db8a57f
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Wed Nov 16 09:22:25 2016 +0100
Indication if to use fresnel is now handled via the type of the BSDF.
commit 0103659f5e
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Fri Nov 11 13:04:11 2016 +0100
Fixed an error in the clearcoat where it appeared too bright for default
light sources (like directional lights)
commit 0aa68f5335
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Mon Nov 7 12:04:38 2016 +0100
Resolved inconsistencies in using tabs and spaces
commit f5897a9494
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Mon Nov 7 08:13:41 2016 +0100
Improved the clearcoat part by using GTR1 instead of GTR2
commit 3dfc240e61
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Mon Oct 31 11:31:36 2016 +0100
Use reflection BSDF for glossy reflections when roughness is 0.0 to
reduce computational expense and some code cleanup
Code cleanup includes:
- Code style cleanup and removed unused code
- Consolidated code in the bsdf_microfacet_multi_impl.h to reduce
some computational expense
commit a2dd0c5faf
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Wed Oct 26 08:51:10 2016 +0200
Fixed glossy reflections and refractions for low roughness values and
cleaned up the code.
For low roughness values, the reflections had some strange behavior.
commit 9817375912
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Tue Oct 25 12:37:40 2016 +0200
Removed default values in setup functions and added extra functions for
GGX with fresnel.
commit bbc5d9d452
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Tue Oct 25 11:09:36 2016 +0200
Switched from uniform to cosine hemisphere sampling for the diffuse and
the sheen part.
commit d52d8f2813
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Mon Oct 24 16:17:13 2016 +0200
Removed the color parameters from the diffuse and sheen shader and use
them as closure weights instead.
commit 8f3d927385
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Mon Oct 24 09:57:06 2016 +0200
Fixed the issue with artifacts when using anisotropy without linking the
tangent input to a tangent node.
commit d93f680db9
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Mon Oct 24 09:14:51 2016 +0200
Added subsurface radius parameter to control the per color channel
effection radius of the subsurface scattering.
commit c708c3e53b
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Mon Oct 24 08:14:10 2016 +0200
Rearranged the inputs of the shader.
commit dfbfff9c38
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Fri Oct 21 09:27:05 2016 +0200
Put spaces in the parameter names of the shader node
commit e5a748ced1
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Fri Oct 21 08:51:20 2016 +0200
Removed code that isn't in use anymore
commit 75992bebc1
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Fri Oct 21 08:50:07 2016 +0200
Code style cleanup
commit 4dfcf455f7
Merge: 243a0e32cd6a89
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Thu Oct 20 10:41:50 2016 +0200
Merge branch 'master' into cycles_disney_brdf
commit 243a0e3eb8
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Thu Oct 20 10:01:45 2016 +0200
Switching between OSL and SVM is more consistant now when using Disney
BSDF.
There were some minor differences in the OSL implementation, e.g. the
refraction roughness was missing.
commit 2a5ac50922
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Tue Sep 27 09:17:57 2016 +0200
Fixed a bug that caused transparency to be always white when using OSL and
selecting GGX as distribution of the Disney BSDF
commit e1fa862391
Merge: d0530a87f76f6f
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Tue Sep 27 08:59:32 2016 +0200
Merge branch 'master' into cycles_disney_brdf
commit d0530a8af0
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Tue Sep 27 08:53:18 2016 +0200
Cleanup the Disney BSDF implementation and removing unneeded files.
commit 3f4fc826bd
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Tue Sep 27 08:36:07 2016 +0200
Unified the OSL implementation of the Disney clearcoat as a simple
microfacet shader like it was previously done in SVM
commit 4d3a0032ec
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Mon Sep 26 12:35:36 2016 +0200
Enhanced performance for Disney materials without subsurface scattering
commit 3cd5eb56cf
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Fri Sep 16 08:47:56 2016 +0200
Fixed a bug in the Disney BSDF that caused specular reflections to be too
bright and diffuse is now reacting to the roughness again
- A normalization for the fresnel was missing which caused the specular
reflections to become too bright for the single-scatter GGX
- The roughness value for the diffuse BSSRDF part has always been
overwritten and thus always 0
- Also the performance for refractive materials with roughness=0.0 has
been improved
commit 7cb37d7119
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Thu Sep 8 12:24:43 2016 +0200
Added selection field to the Disney BSDF node for switching between
"Multiscatter GGX" and "GGX"
In the "GGX" mode there is an additional parameter for changing the
refraction roughness for materials with smooth surfaces and rough interns
(e.g. honey). With the "Multiscatter GGX" this effect can't be produced at
the moment and so here will be no separation of the two roughness values.
commit cdd29d06bb
Merge: 02c315ab40d1c1
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Tue Sep 6 15:59:05 2016 +0200
Merge branch 'master' into cycles_disney_brdf
commit 02c315aeb0
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Tue Sep 6 15:16:09 2016 +0200
Implemented the OSL part of the Disney shader
commit 5f880293ae
Merge: 630b80eb399a6d
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Fri Sep 2 10:53:36 2016 +0200
Merge branch 'master' into cycles_disney_brdf
commit 630b80e08b
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Fri Sep 2 10:52:13 2016 +0200
Fresnel in the microfacet multiscatter implementation improved
commit 0d9f4d7acb
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Fri Aug 26 11:11:05 2016 +0200
Fixed refraction roughness problem (refractions were always 100% rough)
and set IOR of clearcoat to 1.5
commit 9eed34c7d9
Merge: ef29aaeae475e3
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Tue Aug 16 15:22:32 2016 +0200
Merge branch 'master' into cycles_disney_brdf
commit ef29aaee1a
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Tue Aug 16 15:17:12 2016 +0200
Implemented the fresnel in the multi-scatter GGX for the Disney BSDF
- The specular/metallic part uses the multi-scatter GGX
- The fresnel of the metallic part is controlled by the specular value
- The color of the reflection part when using transparency can be
controlled by the specularTint value
commit 88567af085
Merge: cc267e5285e082
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Wed Aug 3 15:05:09 2016 +0200
Merge branch 'master' into cycles_disney_brdf
commit cc267e52f2
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Wed Aug 3 15:00:25 2016 +0200
Implemented the Disney clearcoat as a variation of the microfacet bsdf,
removed the transparency roughness again and added an input for
anisotropic rotations
commit 81f6c06b1f
Merge: ece5a087065022
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Wed Aug 3 11:42:02 2016 +0200
Merge branch 'master' into cycles_disney_brdf
commit ece5a08e0d
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Tue Jul 26 16:29:21 2016 +0200
Base color now applied again to the refraction of transparent Disney
materials
commit e3aff6849e
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Tue Jul 26 16:05:19 2016 +0200
Added subsurface color parameter to the Disney shader
commit b3ca6d8a2f
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Tue Jul 26 12:30:25 2016 +0200
Improvement of the SSS in the Disney shader
* Now the bump normal is correctly used for the SSS.
* SSS in Disney uses the Disney diffuse shader
commit d68729300e
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Tue Jul 26 12:23:13 2016 +0200
Better calculation of the Disney diffuse part
Now the values for NdotL und NdotV are clamped to 0.0f for a better look
when using normal maps
commit cb6e500b12
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Mon Jul 25 16:26:42 2016 +0200
Now one can disable specular reflactions again by setting specular and
metallic to 0 (cracked this in the previous commit)
commit bfb9cb11b5
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Mon Jul 25 16:11:07 2016 +0200
fixed the Disney SSS and cleaned the initialization of the Disney shaders
commit 642c0fdad1
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Mon Jul 25 16:09:55 2016 +0200
fixed an error that was caused by the missing LABEL_REFLECT in the Disney
diffuse shader
commit c10b484dca
Author: Jens Verwiebe <info@jensverwiebe.de>
Date: Fri Jul 22 01:15:21 2016 +0200
Rollback attempt to fix sss crashing, it prevented crash by disabling sss completely, thus useless
commit 462bba3f97
Author: Jens Verwiebe <info@jensverwiebe.de>
Date: Thu Jul 21 23:11:59 2016 +0200
Add an undef for sc_next for safety
commit 32d348577d
Author: Jens Verwiebe <info@jensverwiebe.de>
Date: Thu Jul 21 00:15:48 2016 +0200
Attempt to fix Disney SSS
commit dbad91ca6d
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Wed Jul 20 11:13:00 2016 +0200
Added a roughness parameter for refractions (for scattering of the rays
within an object)
With this, one can create a translucent material with a smooth surface and
with a milky look.
The final refraction roughness has to be calculated using the surface
roughness and the refraction roughness because those two are correlated
for refractions. If a ray hits a rough surface of a translucent material,
it is scattered while entering the surface. Then it is scattered further
within the object. The calculation I'm using is the following:
RefrRoughnessFinal = 1.0 - (1.0 - Roughness) * (1.0 - RefrRoughness)
commit 50ea5e3e34
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Tue Jun 7 10:24:50 2016 +0200
Disney BSDF is now supporting CUDA
commit 10974cc826
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Tue May 31 11:18:07 2016 +0200
Added parameters IOR and Transparency for refractions
With this, the Disney BRDF/BSSRDF is extended by the BTDF part.
commit 218202c090
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Mon May 30 15:08:18 2016 +0200
Added an additional normal for the clearcoat
With this normal one can simulate a thin layer of clearcoat by applying a
smoother normal map than the original to this input
commit dd139ead7e
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Mon May 30 12:40:56 2016 +0200
Switched to the improved subsurface scattering from Christensen and
Burley
commit 11160fa4e1
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Mon May 30 10:16:30 2016 +0200
Added Disney Sheen shader as a preparation to get to a BSSRDF
commit cee4fe0cc9
Merge: 4f955d06b5bab6
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Mon May 30 09:08:09 2016 +0200
Merge branch 'cycles_disney_brdf' of git.blender.org:blender into cycles_disney_brdf
Conflicts:
intern/cycles/kernel/closure/bsdf_disney_clearcoat.h
intern/cycles/kernel/closure/bsdf_disney_diffuse.h
intern/cycles/kernel/closure/bsdf_disney_specular.h
intern/cycles/kernel/closure/bsdf_util.h
intern/cycles/kernel/osl/CMakeLists.txt
intern/cycles/kernel/osl/bsdf_disney_clearcoat.cpp
intern/cycles/kernel/osl/bsdf_disney_diffuse.cpp
intern/cycles/kernel/osl/bsdf_disney_specular.cpp
intern/cycles/kernel/osl/osl_closures.h
intern/cycles/kernel/shaders/node_disney_bsdf.osl
intern/cycles/render/nodes.cpp
intern/cycles/render/nodes.h
commit 4f955d0523
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Tue May 24 16:38:23 2016 +0200
SVM and OSL are both working for the simple version of the Disney BRDF
commit 1f5c41874b
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Tue May 24 09:58:50 2016 +0200
Disney node can be used without SVM and started to cleanup the OSL implementation
There is still some wrong behavior for SVM for the Schlick Fresnel part at the
specular and clearcoat
commit d4b814e930
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Wed May 18 10:22:29 2016 +0200
Switched from a parameter struct for Disney parameters to ShaderClosure params
commit b86a1f5ba5
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Wed May 18 10:19:57 2016 +0200
Added additional variables for storing parameters in the ShaderClosure struct
commit 585b886236
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Tue May 17 12:03:17 2016 +0200
added output parameter to the DisneyBsdfNode
That has been forgotten after removing the inheritance of BsdfNode
commit f91a286398
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Tue May 17 10:40:48 2016 +0200
removed BsdfNode class inheritance for DisneyBsdfNode
That's due to a naming difference. The Disney BSDF uses the name 'Base Color'
while the BsdfNode had a 'Color' input. That caused a text message to be
printed while rendering.
commit 30da91c9c5
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Wed May 4 16:08:10 2016 +0200
disney implementation cleaned
commit 30d41da0f0
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Wed May 4 13:23:07 2016 +0200
added the disney brdf as a shader node
commit 1f099fce24
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Tue May 3 16:54:49 2016 +0200
added clearcoat implementation
commit 00a1378b98
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Fri Apr 29 22:56:49 2016 +0200
disney diffuse und specular implemented
commit 6baa7a7eb7
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Mon Apr 18 15:21:32 2016 +0200
disney diffuse is working correctly
commit d8fa169bf3
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Mon Apr 18 08:41:53 2016 +0200
added vessel for disney diffuse shader
commit 6b5bab6cec
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Wed May 18 10:22:29 2016 +0200
Switched from a parameter struct for Disney parameters to ShaderClosure params
commit f6499c2676
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Wed May 18 10:19:57 2016 +0200
Added additional variables for storing parameters in the ShaderClosure struct
commit 7100640b65
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Tue May 17 12:03:17 2016 +0200
added output parameter to the DisneyBsdfNode
That has been forgotten after removing the inheritance of BsdfNode
commit 419ee54411
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Tue May 17 10:40:48 2016 +0200
removed BsdfNode class inheritance for DisneyBsdfNode
That's due to a naming difference. The Disney BSDF uses the name 'Base Color'
while the BsdfNode had a 'Color' input. That caused a text message to be
printed while rendering.
commit 6006f91e87
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Wed May 4 16:08:10 2016 +0200
disney implementation cleaned
commit 0ed0895914
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Wed May 4 13:23:07 2016 +0200
added the disney brdf as a shader node
commit 0630b742d7
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Tue May 3 16:54:49 2016 +0200
added clearcoat implementation
commit 9f3d39744b
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Fri Apr 29 22:56:49 2016 +0200
disney diffuse und specular implemented
commit 9b26206376
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Mon Apr 18 15:21:32 2016 +0200
disney diffuse is working correctly
commit 4711a3927d
Author: Pascal Schoen <pascal_schoen@gmx.net>
Date: Mon Apr 18 08:41:53 2016 +0200
added vessel for disney diffuse shader
Differential Revision: https://developer.blender.org/D2313
Object Info node can be useful to give some variation to a single material assigned to multiple instances. This patch adds support for Viewport and BI.
{F499530}
Example: {F499528}
Reviewers: merwin, brecht, dfelinto
Reviewed By: brecht
Subscribers: duarteframos, fclem, homyachetser, Evgeny_Rodygin, AlexKowel, yurikovelenov
Differential Revision: https://developer.blender.org/D2425
Normal Map node support for GLSL mode and the internal render (multiple tangents support).
The Normal Map node is a useful node which is present in the Cycles render.
It makes it possible to use normal mapping without additional material node in a node tree.
This patch implements Normal Map node for GLSL mode and the internal render.
Previously only the active UV layer was used to calculate tangents.
The Vector Transform node is a useful node which is present in the Cycles renderer.
{F144283}
This patch implements the Vector Transform node for GLSL mode and the internal renderer.
Example: {F273060}
Alexander (Blend4Web Team)
Reviewers: brecht, campbellbarton, sergey
Reviewed By: campbellbarton, sergey
Subscribers: psy-fi, duarteframos, RobM, lightbwk, sergey, AlexKowel, valentin_b4w, Evgeny_Rodygin, yurikovelenov
Projects: #bf_blender:_next
Differential Revision: https://developer.blender.org/D909
This commit implements point density texture for Cycles shading nodes.
It's done via creating voxel texture at shader compilation time, Not
totally memory efficient, but avoids adding sampling code to kernel
(which keeps render time as low as possible), In the future this will
be compensated by using OpenVDB for more efficient storage of sparse
volume data.
Sampling of the voxel texture is happening at blender side and the
same code is used as for Blender Internal's renderer.
This texture is controlled by only object, particle system and radius.
Linear falloff is used and there's no turbulence. This is because
falloff is expected to happen using Curve Mapping node. Turbulence
will be done as a distortion on the input coordinate. It's already
possible to fake it using nose textures and in the future we can add
more proper turbulence distortion node, which then could also be used
for 2D texture mapping.
Particle color support is done by Lukas, thanks!
With this patch "Particle Info" node from Cycles works in GLSL and BI
Alexander (Blend4Web Team)
Reviewers: psy-fi
Note: moved particle info to object render instance instead of
shadeinput during review - Antony.
Differential Revision: https://developer.blender.org/D1313
Enum's itemf callback can be called without context in some cases (UI, doc generation...).
Python's enum properties did not handle this at all - it's kind of odd this did not cause
more trouble and wasn't notice earlier... Probably dynamic enums using context are not
much used in py code.
Note about nodes: those are heavy users of dynamic enum with context. Now,
we expect `NodeCategory.poll()` and `NodeItem.poll()` to always be called with
a valid context (since when there is no context available, we can assume `poll()`
is always True). `NodeCategory.items()`, however, must accept NULL context, so if
you use custom `items` callable for your custom node categories, you may need
to update it (as was done here for builtin `node_group_items()`).
Official Documentation:
http://www.blender.org/manual/render/workflows/multiview.html
Implemented Features
====================
Builtin Stereo Camera
* Convergence Mode
* Interocular Distance
* Convergence Distance
* Pivot Mode
Viewport
* Cameras
* Plane
* Volume
Compositor
* View Switch Node
* Image Node Multi-View OpenEXR support
Sequencer
* Image/Movie Strips 'Use Multiview'
UV/Image Editor
* Option to see Multi-View images in Stereo-3D or its individual images
* Save/Open Multi-View (OpenEXR, Stereo3D, individual views) images
I/O
* Save/Open Multi-View (OpenEXR, Stereo3D, individual views) images
Scene Render Views
* Ability to have an arbitrary number of views in the scene
Missing Bits
============
First rule of Multi-View bug report: If something is not working as it should *when Views is off* this is a severe bug, do mention this in the report.
Second rule is, if something works *when Views is off* but doesn't (or crashes) when *Views is on*, this is a important bug. Do mention this in the report.
Everything else is likely small todos, and may wait until we are sure none of the above is happening.
Apart from that there are those known issues:
* Compositor Image Node poorly working for Multi-View OpenEXR
(this was working prefectly before the 'Use Multi-View' functionality)
* Selecting camera from Multi-View when looking from camera is problematic
* Animation Playback (ctrl+F11) doesn't support stereo formats
* Wrong filepath when trying to play back animated scene
* Viewport Rendering doesn't support Multi-View
* Overscan Rendering
* Fullscreen display modes need to warn the user
* Object copy should be aware of views suffix
Acknowledgments
===============
* Francesco Siddi for the help with the original feature specs and design
* Brecht Van Lommel for the original review of the code and design early on
* Blender Foundation for the Development Fund to support the project wrap up
Final patch reviewers:
* Antony Riakiotakis (psy-fi)
* Campbell Barton (ideasman42)
* Julian Eisel (Severin)
* Sergey Sharybin (nazgul)
* Thomas Dinged (dingto)
Code contributors of the original branch in github:
* Alexey Akishin
* Gabriel Caraballo
Some nodes only work in certain node trees, so don't show them in the Add Node menu when this is the case.
This can probably be expanded to Input Nodes too, but need to double check some cases here still.
This allows adding a "fake" sun beam effect, simulating crepuscular rays
from light being scattered in a medium like the atmosphere or deep water.
Such effects can be created also by renderers using volumetric lighting,
but the compositor feature is a lot cheaper and is independent from 3D
rendering. This makes it ideally suited for motion graphics.
The implementation uses am optimized accumulation method for gathering
color values along a line segment. The inner buffer loop uses fixed
offset increments to avoid unnecessary multiplications and avoids
variables by using compile-time specialization (see inline comments
for further details).
panels.
Patch by @Severin (with minor modifications by me). As discussed in
{D535} the node editor does not have real modal operator tools like the
3D view or image editors for instance, so it makes sense to utilise it
this way. Tabs really help in this area due to the large amount of node
types and categories. Further tweaks could be made later if the need
arises.
This was suggested by Christopher Barrett (terrachild). Corner pin is a common feature in compositing.
The corners for the plane warping can be defined by using vector node inputs to allow using perspective plane transformations without having to go via the MovieClip editor tracking data.
Uses the same math as the PlaneTrack node, but without the link to MovieClip and Object.
{F78199}
The code for PlaneTrack operations has been restructured a bit to share it with the CornerPin node.
* PlaneDistortCommonOperation.h/.cpp: Shared generic code for warping images based on 4 plane corners and a perspective matrix generated from these. Contains operation base classes for both the WarpImage and Mask operations.
* PlaneTrackOperation.h/.cpp: Current plane track node operations, based on the common code above. These add pointers to MovieClip and Object which define the track data from wich to read the corners.
* PlaneCornerPinOperation.h/.cpp: New corner pin variant, using explicit input sockets for the plane corners.
One downside of the current compositor design is that there is no concept of invariables (constants) that don't vary over the image space. This has already been an issue for Blur nodes (size input is usually constant except when "variable size" is enabled) and a few others. For the corner pin node it is necessary that the corner input sockets are also invariant. They have to be evaluated for each tile now, otherwise the data is not available. This in turn makes it necessary to make the operation "complex" and request full input buffers, which adds unnecessary overhead.
This is the simplest possible volume rendering case, constant density inside
the volume and no scattering or emission. My plan is to tweak, verify and commit
more volume rendering effects one by one, doing it all at once makes it
difficult to verify correctness and track down bugs.
Documentation is here:
http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Materials/Volume
Currently this hooks into path tracing in 3 ways, which should get us pretty
far until we add more advanced light sampling. These 3 hooks are repeated in
the path tracing, branched path tracing and transparent shadow code:
* Determine active volume shader at start of the path
* Change active volume shader on transmission through a surface
* Light attenuation over line segments between camera, surfaces and background
This is work by "storm", Stuart Broadfoot, Thomas Dinges and myself.
For now this provides the following outputs:
- Color
- Light Vector
- Distance
- Shadow
- Visibility Factor
Note: Color output is multiplied by the lamp energy. Multiplication of
color*max(dot(light_vector,normal_vector),0)*shadow*visibility_factor
produces the exact same result as the Lambert shader.
Many thanks to Brecht for code review and discussion!
A new hair bsdf node, with two closure options, is added. These closures allow the generation of the reflective and transmission components of hair. The node allows control of the highlight colour, roughness and angular shift.
Llimitations include:
-No glint or fresnel adjustments.
-The 'offset' is un-used when triangle primitives are used.
