diff options
Diffstat (limited to 'src/mesa/drivers/dri/i965/brw_defines.h')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_defines.h | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_defines.h b/src/mesa/drivers/dri/i965/brw_defines.h index 6b8e9e05d0..9633c95ff5 100644 --- a/src/mesa/drivers/dri/i965/brw_defines.h +++ b/src/mesa/drivers/dri/i965/brw_defines.h @@ -501,9 +501,26 @@ #define BRW_MASK_ENABLE 0 #define BRW_MASK_DISABLE 1 -/* Sandybridge is WECtrl (Write enable control) */ +/** @{ + * + * Gen6 has replaced "mask enable/disable" with WECtrl, which is + * effectively the same but much simpler to think about. Now, there + * are two contributors ANDed together to whether channels are + * executed: The predication on the instruction, and the channel write + * enable. + */ +/** + * This is the default value. It means that a channel's write enable is set + * if the per-channel IP is pointing at this instruction. + */ #define BRW_WE_NORMAL 0 -#define BRW_WE_KILL_PRED 1 +/** + * This is used like BRW_MASK_DISABLE, and causes all channels to have + * their write enable set. Note that predication still contributes to + * whether the channel actually gets written. + */ +#define BRW_WE_ALL 1 +/** @} */ #define BRW_OPCODE_MOV 1 #define BRW_OPCODE_SEL 2 @@ -930,6 +947,7 @@ /* DW3 */ # define GEN6_CLIP_MIN_POINT_WIDTH_SHIFT 17 # define GEN6_CLIP_MAX_POINT_WIDTH_SHIFT 6 +# define GEN6_CLIP_FORCE_ZERO_RTAINDEX (1 << 5) #define CMD_3D_SF_STATE 0x7813 /* GEN6+ */ /* DW1 */ |