From 3efb934deee37bc6203577f686c55d658ea4c7c3 Mon Sep 17 00:00:00 2001 From: Francisco Jerez Date: Wed, 19 Feb 2014 15:20:27 +0100 Subject: i965/vec4: Add non-mutating helper functions to modify src_reg::swizzle and ::negate. Reviewed-by: Paul Berry (cherry picked from commit 98306e727b8291507ff4fd5dd5c4806f3fed9202) --- src/mesa/drivers/dri/i965/brw_vec4.h | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) (limited to 'src') diff --git a/src/mesa/drivers/dri/i965/brw_vec4.h b/src/mesa/drivers/dri/i965/brw_vec4.h index e17b5cd3f37..2a1d99215ae 100644 --- a/src/mesa/drivers/dri/i965/brw_vec4.h +++ b/src/mesa/drivers/dri/i965/brw_vec4.h @@ -142,6 +142,30 @@ public: src_reg *reladdr; }; +/** + * 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: -- cgit v1.2.3