Unsupported platform/graphics cards

Viewport 2.0 is currently not supported on the Mac OS X platform for the ATI Radeon X1900 Gfx card.

Possible slowdown or instability due to issues with memory management on Mac OS X

Users of Viewport 2.0 may encounter either extreme slowdowns or instability due to issues with memory management on Mac OS X.

To try and alleviate this problem, you can set the texture size used for viewport display when loading in file textures for the renderer. Do as follows:

1. Set the environment variable : MAYA_OGS_ENABLE_MAX_TEXTURE_SIZE_PREF to the value you want before starting up Maya.
2. After Maya starts up, go to the Windows > Settings/Preferences > Preferences > Display and set the Max. texture display res. The smaller the value, the greater the chance of avoiding this issue.

You can also set this environment variable: MAYA_OGS_CPU_MEMORY_LIMIT (to a value in MB) to how much memory you anticipate you would use for the renderer. The value should be smaller than the actual amount available on your machine.

Possible instabilities on Mac OS X for graphics cards with less memory

When working on Viewport 2.0 on the Mac OS X (10.6.x), instabilities may occur when too much graphics memory is used. For graphics cards with less memory, this situation may occur more frequently, since the memory threshold is smaller. A graphics card with 1GB of vram or greater is recommended for the Mac OS X platform.

Note: On Apple computer systems shipping prior to 2009, you may see the option to enter Viewport 2.0. Please be aware that these systems do not meet the minimum specification for Viewport 2.0 and may cause Maya to crash and you may loose your data.

Possible slowdown on the Linux platform with PCI Express 1.0 hardware

There is a known driver issue on some (particularly older) Linux hardware with PCI Express 1.0 that can force Viewport 2.0 back to a software path. This can result in dramatically slower performance. This issue may be fixed in newer drivers.

32-bit Windows XP system not recommended

It is not recommended that you use a 32-bit Windows XP system for Viewport 2.0, as support for various features can be limited.

Remote display or indirect rendering not supported on Linux

Remote display or indirect rendering is not supported on the Linux platform.