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© Next Limit Technologies 2010
Maxwell Render 2.5 User Manual
Chapter 8. Setting up the render output | 37
Re. Caustics: Render direct reective caustics, indirect reective caustics, or
both. Direct reective caustics come from light that bounced off a specular reective
object and created caustic light patterns on any subsequent object. Indirect reective
caustics come from light that bounced off an object, then off a specular reective
object, and then created a caustic light pattern on any subsequent surface.
Refr. Caustics: Render direct refractive caustics, indirect refractive caustics, or both.
Direct refractive caustics come from direct light that has passed through a transparent
material and has created a caustic light pattern on any subsequent surface. Indirect
refractive caustics come from light that has rst bounced off a surface, then passed
through a refractive object, and caused a caustic light pattern on any subsequent
surface.
8.09 Render Export Options
Due to the different characteristics of the available output formats, the required extra
channels for exporting, and the Multilight options, you have a wide range of export options
depending of the needs of your project.
We can show all the possibilities in this tree:
8.09.01 Multilight Disabled
Regarding the light emitters: you will get one single le with the contribution of
all emitters merged in one single image (RGB or RGBA if your output format supports
embedding alpha and you enable the alpha channel exportation).
Regarding the extra channels for exporting: you may want them to be
Embedded into the main output le if its format supports this:
EXR, TIFF and MXI will embed all the enabled extra channels into the main
render le.
TGA and PNG can embed only the alpha channel into the main render le (RGBA).
The rest of the extra channels will be stored in independent les.
JPG, BMP, JPG2000 and HDR do not support embedding alpha or any extra
channels. All the extra channels will be exported to independent les.
Separate: getting independent les for all the required extra channels in all cases (all
formats)
8.09.02 Multilight Enabled
Regarding the light emitters: you may want to store each emitter contribution to
independent les or have them all as layers in one multi-layered le:
Composite: all your light emitters will be stored as different layers in one multi-layered
le, in those formats that allow multiple layers (EXR, TIFF and MXI). For the rest of
the formats (TGA, PNG, JPG, BMP, JPG2000 and HDR) the emitters will be stored as
independent les, as those formats do not support multiple image layers.
Separate: you will get a collection of individual les corresponding to the different
emitters in the scene.
Regarding to the extra channels exportation: you may want them to be
Embedded into the main output le if its format supports this:
EXR, TIFF and MXI will embed all the enabled extra channels into the main
render le.
TGA and PNG can embed only the alpha channel into the main render le (RGBA).
The rest extra channels will be stored to independent les.
JPG, BMP, JPG2000 and HDR do not support embedding alpha or any extra
channels. All the extra channels will be exported to independent les.
Separate: getting independent les for all the required extra channels in all cases (all
formats)
Keep in mind that in order to get the alpha channel embedded in the main render le (in
those formats that support embedded alpha), you have to set the exportation of the alpha
channel at the same bit depth as the main render le. Otherwise it will be exported to an
independent le with the indicated bit depth and format.
The MXI les (containing all the emitters and all the extra channels) can be opened in
Maxwell Render, or in Adobe Photoshop, Adobe After Effects and Nuke through the Import
MXI connection plug-ins (See chapter 3.01.02).
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