[Mesa-dev] [PATCH 2/3] i965/eu: set DF imm value to the source of DIM

Samuel Iglesias Gonsálvez siglesias at igalia.com
Wed Jul 13 06:42:17 UTC 2016

According to HSW's PRM, vol02b, the DIM instruction has the following

"Restriction : src0 must be immediate. src0 must specify the :f (F, Float)
type encoding but is an immediate 64-bit DF (Double Float) value. dst
must have type DF."

This commit allows to upload the immediate 64-bit DF value to the source
of a DIM instruction even when it is of float type encoding.

Signed-off-by: Samuel Iglesias Gonsálvez <siglesias at igalia.com>
 src/mesa/drivers/dri/i965/brw_eu_emit.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/mesa/drivers/dri/i965/brw_eu_emit.c b/src/mesa/drivers/dri/i965/brw_eu_emit.c
index f2f55410..fc187d1 100644
--- a/src/mesa/drivers/dri/i965/brw_eu_emit.c
+++ b/src/mesa/drivers/dri/i965/brw_eu_emit.c
@@ -350,7 +350,8 @@ brw_set_src0(struct brw_codegen *p, brw_inst *inst, struct brw_reg reg)
    brw_inst_set_src0_address_mode(devinfo, inst, reg.address_mode);
    if (reg.file == BRW_IMMEDIATE_VALUE) {
-      if (reg.type == BRW_REGISTER_TYPE_DF)
+      if (reg.type == BRW_REGISTER_TYPE_DF ||
+          brw_inst_opcode(devinfo, inst) == BRW_OPCODE_DIM)
          brw_inst_set_imm_df(devinfo, inst, reg.df);
          brw_inst_set_imm_ud(devinfo, inst, reg.ud);

More information about the mesa-dev mailing list