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Presentation

The following describes known limitations related to presentation, effects, and display in Mudbox 2009.

Selecting a material preset when the Mudbox material property window is displayed takes several seconds to update

Assigning the default Mudbox Material to a model displays the material properties window. If an item is selected from the Material Presets tray while the properties window is displayed, the application appears to lock up while it assigns the selected preset. This can take several seconds.

Workaround: Wait until the material preset has been applied before continuing. The time interval is reduced when the material properties window is not displayed.

Ambient Occlusion incorrectly positioned on model’s surface

The shading effect associated with the Ambient Occlusion viewport filter can appear shifted or offset along the model’s surface. The issue occurs on small scale objects.

Workaround: Increase the scale of the model using the Scale tool.

Viewport filter settings not saved

Viewport filter settings (Ambient Occlusion, Tonemapper, Depth of Field) are not currently saved with a Mudbox scene file (.mud).

Workaround: Viewport filter settings can be saved as a material preset. A material preset saves the active object's material and any current viewport filter settings as a preset on the Material Presets tray. Material presets are saved between Mudbox sessions. Clicking the preset applies its contents to models in the current scene.

EXR images (32 bit) for reflection maps

When choosing images for reflection maps, keep in mind that the amount of GPU memory required to display them can be quite large. For example, a 4K x 2K 16 bit/channel map requires Mudbox to produce six 4k x 4k 16 bit/channel textures to load on to the GPU (1 for each surface of a cube). This amounts to 768 megabytes of textures for the environment map alone. This drastically affect the performance of any computer system and graphics card.

Workaround: The Mudbox team recommends that users limit their reflection maps to 2k x 1k as the maximum resolution. Most users will not even notice a degradation in quality when using 1k x 512 reflection maps. These resolutions would require 192 Mb and 48 Mb respectively.