Field Name Bits Default Description NUM_MULTIWRITES 6:5 0x0 A quad is replicated and written to this many buffers. POSSIBLE VALUES: 00 - 1 buffer. This is the only mode where the cb processes the end of packet command. 01 - 2 buffers 02 - 3 buffers 03 - 4 buffers CLRCMP_FLIPE_ENABLE 7 0x0 Enables equivalent of rage128 CMP_EQ_FLIP color compare mode. This is used to ensure 3D data does not get chromakeyed away by logic in the backend. POSSIBLE VALUES: 00 - Disable color compare. 01 - Enable color compare. AA_COMPRESSION_ENABLE 9 none Enables AA color compression. Cmask must also be enabled when aa compression is enabled. The cache must be empty before this is changed. POSSIBLE VALUES: 00 - Disable AA compression 01 - Enable AA compression CMASK_ENABLE 10 none Enables use of the cmask ram. The cache must be empty before this is changed. POSSIBLE VALUES: 00 - Disable 01 - Enable INDEPENDENT_COLOR_CHANNEL_MASK_ENABLE 12 0x0 Enables indepedent color channel masks for the MRTs. Disabling this feature will cause all the MRTs to use color channel mask 0. POSSIBLE VALUES: 00 - Disable 01 - Enable WRITE_COMPRESSION_DISABLE 13 none Disables write compression. POSSIBLE VALUES: 00 - Enable write compression 01 - Disable write compression INDEPENDENT_COLORFORMAT_ENABLE 14 0x0 Enables independent color format for the MRTs. Disabling this feature will cause all the MRTs to use color format 0. POSSIBLE VALUES: 00 - Disable 01 - Enable