C4D阿诺德渲染器 SolidAngle C4DtoA 2.6.0 R18/R19/R20 Win/Mac 替换和谐版
不再支持C4D R17，增加支持C4D R20，如果安装后C4D 打不开，请先卸载插件，然后把C4D更新到热门版本，zui*后重新安装插件即可
全新Arnold 5.4.0.0内核
新功能：
Added isolate selected feature to the IPR window
Added render text overlay settings
Added clip_geo shader which clips out all geometry against the shapes it has been assigned to. Users can limit the objects that are affected with trace sets, and optionally choose a specific shader for the intersection surfaces. Self-intersecting geometry or intersecting clipping objects can cause artifacts.
Added AOV read shaders which let you access built-in AOVs in the AOV shader context or custom AOVs in the regular shading context.
Autodesk analytics program: Arnold can now optionally send anonymous statistics data back to Autodesk for analysis, which helps optimizing Arnold for the commonly used workflows and systems. For the moment this is only available for OSX and disabled by default (opted-out). This service can be enabled (opted-in) through the kick -ADP flag, or through other Autodesk applications that support this, such as Maya and 3ds Max.
性能提升：
Added IPR snapshot name and text overlay settings
Added RGBA channel selector combo box to the IPR window toolbar
Select IPR debug shading mode from the toolbar
Improved IPR window side panel controls
Added pixel information side panel to the IPR window
Added support for Look at Camera tag in the IPR
Configure shortcut of the node search dialog in the network editor
Added support for scene length units
List content of a procedural
Define folders on the Arnold Procedural Assets tab
Added layering to the alembic procedural
Improved set_parameter operator UI
Added transform mode to the set_parameter operator UI
Improved set_transform operator UI
Disable assignment expressions in the set_parameter operator
Show available terminal nodes in the targets for include_graph operator
Bug修复：
IPR crash with light instances and light linking
IPR crash with light instances and mesh lights
Bad IPR performance when translating heavy objects
Crash when clicking on debug shading before starting the IPR
Can’t edit IPR Zoom parameter when IPR is off
Incorrect motion blur with xpGenerator and particles with limited lifespan
Network editor shader tree does not open while searching shaders
Subdivision is not baked when device is set to GPU
Can not select output channels of an OSL node
No Arnold tag on a camera created as a child of an object
Can not control placement of newly created Arnold lights and drivers
Driver path sometimes fails to update when switching selection between two driver objects
Win的包含2.5.2.1和2.6.0版本，Mac的是2.5.2.1版本
安装对应的版本
Win：
打开替换文件夹，拷贝ai.dll和arnold.lic到安装目录中\MAXON\Cinema 4D R20\Plugins\C4DtoA\arnold\bin
如果你安装过之前的版本，先确保MAXON\Cinema 4D R20里面没有ai.dll这个文件，有的话删除
Mac：
打开替换文件夹，拷贝替换libai.dylib和arnold.lic到应用程序\MAXON\CINEMA 4D R20\arnold\bin
如果你安装过之前的版本，先确保MAXON\Cinema 4D R20里面没有ai.dll这个文件，有的话删除
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