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846 Chapter 22: Customizing the User Interface

refreshing the screen. Turn on one or the other,

as appropriate.

•

Redraw In Maximized V iewpor t—If, after

updating the screen, the display card destroys

the back buffer only when there’s a single

viewport, turn on this sub-option. The

Direct3D driver redraws the scene when a

single viewpor t is visible, but doesn’t have to

redraw when multiple viewports are visible.

Default=off.

•

Redraw In UnMaximized V iewports—If, after

updating the screen, the display card destroys

thebackbufferwhenmultipleviewportsare

visible, turn on this sub-option. Default=off.

Allow Dual P lane Support—Uses the front/back

plane system when redrawing the viewport. The

selected object is manipulated in the front plane

and is redrawn, whi le other objects remain on

the back plane and are not redrawn. This default

settingprovidesthefastestredrawsundernormal

circumstances. If your assigned display driver

doesn’t support dual planes, this option is not

available.

Turn off this sett ing to improve redraw speed if you

are rotating the whole scene or moving a camera

through the scene (usually situations in which the

whole v iewport needs to b e redrawn anyway).

Use Incremental S cene Updat es—Redraws only

thosesceneobjectsthathavechanged,orthat

intersect a region changed by another moving

object. Whenturnedoff,theentiresceneis

redrawn for each new frame. Default=on.

If your 3ds Max display b ecomes messy or

"corrupted" as a result of incremental updates,

turn this option off and t hen redraw viewports by

choosingViews>RedrawAllViews(thedefault

keyboard shortcut for this is 1 on the numeric

keypad).

Appearance Preferences group

Enable Antialiased Lines in Wireframe V iews—Draws

lines slightly thicker and much smoother. This is

best used for wireframe-only views, especially if

you’re making a preview of wireframe objects.

Background Texture Size—Un like the software

display driver, which uses bitmaps to display

viewport backgrounds directly, the Direct3D

driver uses a texture-mapped background

rectangle.Thisallowsforsmootherzoomsand

pans in orthog r aphic v iews and can t a ke less

memory than the direct bitmap method. However,

background bitmap resolution may be lost.

Increasetheresolutionifyou’reusingamaximized

view por t to digitize.

Match B itmap Size as Closely as Possible—Displays

background at full resolution. This allows the

view por t to behave like the rendered frame

window (page 3–5), in regards to zoom and pan.

Default=off.

Download Texture S ize—Lets you choose the size of

the texture map that’s downlo aded to the driver

for texture-mapped scene objects. Larger maps

lookbetter,butusemoredisplaycardmemory.

Note: When Ma t ch Bitmap Size As Closely as

Possibleison,thesebuttonsareoverridden,

however they are still available. The value is still

used when procedural textures are converted to

bitmaps for viewport texture display.

Match B itmap Size as Closely as Possible—To a l l ow

the viewport to show actual texture resolutions,

bitmaps are individually resized before they are

downloaded to the driver. This means that small

bitmaps don’t get overexpanded and large bitmaps

retain their resolution (but potentially use a lot