8

Ray-Trace Acceleration: Parameters for the BSP Methods 125
Name or I P Ad dres s—
Ente r t he name or the
numeric IP address of the processor you want to
add.
Use Default Por t—Whenon,3dsMaxassignsaport
number to the new processor. The Port Number
control is unavailable while Use Default Port is on.
Default=on.
Ray-Trace Acceleration
Parameters
R a y -Tr a ce A cceler a ti on:
Par ameter s for the B SP M ethods
Rendering menu > Render > Render Scene dialog
> R enderer panel > Rendering Algorithms rollout >
Raytrace Acceleration g roup > Choose BSP or Large BSP
as the Raytrace Acceleration method.
Main toolbar > Render Scene > Render Scene dialog
> R enderer panel > Rendering Algorithms rollout >
Raytrace Acceleration g roup > Choose BSP or Large BSP
as the Raytrace Acceleration method.
Note: The Processing panel appears o nly when the
mental ray renderer is the currently active renderer.
When y o u choose BSP or Large BSP as the
Ray trace Acceleration method on the
Rendering
Algorithms rollout (page 3–113)
,theparameters
described here are displayed. BSP stands for
Binary Space Partitioning. BSP is the default
method. Large BSP is a variant whose par titioning
tree can be swapped in and out of memor y, making
it suitable for rendering very large scenes.
Note: If the scene contains too many faces
(triang les) to fit in a tree of the size specified by the
Size and Depth parameters, mental ray disregards
theSizevalueandcreateslargerleafnodes.This
can significantly slow down rendering. To avoid
this problem, increase the value of Depth.
Interfa ce
Size—Sets the maximum number of faces
(triangles) in the leaf of a BSP tree. Increasing
the Size value reduces memory consumption but
increases rendering time. Default=10.
Depth—Sets the maximum number of levels
in the BSP tree. Increasing the Depth value
reducesrenderingtime,butincreasesmemory
consumption and preprocessing time. Default=40.
Tip: For large scenes, increasing the Depth value to
50 or more can greatly improve rendering time.
R a y -Tr a ce A cceler a ti on:
Parameters for the Grid Method
Rendering menu > Render > Render Scene dialog
> Renderer pan el > Rendering Algorithms rollout >
Raytrace Acceleration group > Choose Grid as the
Raytrace Acceleration metho d.
Main toolbar > Render Scene > Render Scene dialog
> Renderer pan el > Rendering Algorithms rollout >
Raytrace Acceleration group > Choose Grid as the
Raytrace Acceleration metho d.
Note: The Processing panel appears only when the
mental ray renderer is the currently active renderer.
When you choose Grid as the Raytrace
Acceleration method on the
Rendering Algorithms
rollout (page 3–113)
,theSize,Depth,and
Resolution parameters are displayed. The grid
method subdivides the scene into a grid of
"voxels." A voxel is a node in the subdivided scene.
Interfa ce