diff options
| author | Francisco Jerez <[email protected]> | 2014-02-19 15:20:27 +0100 |
|---|---|---|
| committer | Francisco Jerez <[email protected]> | 2014-02-19 16:27:25 +0100 |
| commit | 98306e727b8291507ff4fd5dd5c4806f3fed9202 (patch) | |
| tree | 5b8bbe785ca98da424a3b299c84b5b97f34fcec8 | |
| parent | 2337820d49149126991d0814b225db7b57789016 (diff) | |
i965/vec4: Add non-mutating helper functions to modify src_reg::swizzle and ::negate.
Reviewed-by: Paul Berry <[email protected]>
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_vec4.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_vec4.h b/src/mesa/drivers/dri/i965/brw_vec4.h index 3be17d890cf..a592af2f128 100644 --- a/src/mesa/drivers/dri/i965/brw_vec4.h +++ b/src/mesa/drivers/dri/i965/brw_vec4.h @@ -148,6 +148,30 @@ offset(src_reg reg, unsigned delta) return reg; } +/** + * Reswizzle a given source register. + * \sa brw_swizzle(). + */ +static inline src_reg +swizzle(src_reg reg, unsigned swizzle) +{ + assert(reg.file != HW_REG); + reg.swizzle = BRW_SWIZZLE4( + BRW_GET_SWZ(reg.swizzle, BRW_GET_SWZ(swizzle, 0)), + BRW_GET_SWZ(reg.swizzle, BRW_GET_SWZ(swizzle, 1)), + BRW_GET_SWZ(reg.swizzle, BRW_GET_SWZ(swizzle, 2)), + BRW_GET_SWZ(reg.swizzle, BRW_GET_SWZ(swizzle, 3))); + return reg; +} + +static inline src_reg +negate(src_reg reg) +{ + assert(reg.file != HW_REG && reg.file != IMM); + reg.negate = !reg.negate; + return reg; +} + class dst_reg : public reg { public: |