As of gen7, we can skip the header on some messages, and this can make
optimization on those messages much nicer when you've got GRFs instead of MRFs
as the source.
---
src/mesa/drivers/dri/i965/brw_eu.h | 1 +
src/mesa/drivers/dri/i965/brw_eu_emit.c | 5 ++++-
src/mesa/drivers/dri/i965/brw_vec4_emit.cpp | 2 ++
3 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/src/mesa/drivers/dri/i965/brw_eu.h
b/src/mesa/drivers/dri/i965/brw_eu.h
index fce4f15..8c3a634 100644
--- a/src/mesa/drivers/dri/i965/brw_eu.h
+++ b/src/mesa/drivers/dri/i965/brw_eu.h
@@ -907,6 +907,7 @@ void brw_set_dp_read_message(struct brw_compile *p,
GLuint msg_type,
GLuint target_cache,
GLuint msg_length,
+ bool header_present,
GLuint response_length);
void brw_set_dp_write_message(struct brw_compile *p,
diff --git a/src/mesa/drivers/dri/i965/brw_eu_emit.c
b/src/mesa/drivers/dri/i965/brw_eu_emit.c
index 72fb5c5..8a629ff 100644
--- a/src/mesa/drivers/dri/i965/brw_eu_emit.c
+++ b/src/mesa/drivers/dri/i965/brw_eu_emit.c
@@ -620,6 +620,7 @@ brw_set_dp_read_message(struct brw_compile *p,
GLuint msg_type,
GLuint target_cache,
GLuint msg_length,
+ bool header_present,
GLuint response_length)
{
struct brw_context *brw = p->brw;
@@ -638,7 +639,7 @@ brw_set_dp_read_message(struct brw_compile *p,
}
brw_set_message_descriptor(p, insn, sfid, msg_length, response_length,
- true, false);
+ header_present, false);
if (intel->gen >= 7) {
insn->bits3.gen7_dp.binding_table_index = binding_table_index;
@@ -1967,6 +1968,7 @@ brw_oword_block_read_scratch(struct brw_compile *p,
BRW_DATAPORT_READ_MESSAGE_OWORD_BLOCK_READ, /*
msg_type */
BRW_DATAPORT_READ_TARGET_RENDER_CACHE,
1, /* msg_length */
+ true, /* header_present */
rlen);
}
}
@@ -2024,6 +2026,7 @@ void brw_oword_block_read(struct brw_compile *p,
BRW_DATAPORT_READ_MESSAGE_OWORD_BLOCK_READ,
BRW_DATAPORT_READ_TARGET_DATA_CACHE,
1, /* msg_length */
+ true, /* header_present */
1); /* response_length (1 reg, 2 owords!) */
brw_pop_insn_state(p);
diff --git a/src/mesa/drivers/dri/i965/brw_vec4_emit.cpp
b/src/mesa/drivers/dri/i965/brw_vec4_emit.cpp
index 812fa47..baffdb6 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4_emit.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4_emit.cpp
@@ -567,6 +567,7 @@ vec4_visitor::generate_scratch_read(vec4_instruction *inst,
msg_type,
BRW_DATAPORT_READ_TARGET_RENDER_CACHE,
2, /* mlen */
+ true, /* header_present */
1 /* rlen */);
}
@@ -700,6 +701,7 @@ vec4_visitor::generate_pull_constant_load(vec4_instruction
*inst,
msg_type,
BRW_DATAPORT_READ_TARGET_DATA_CACHE,
2, /* mlen */
+ true, /* header_present */
1 /* rlen */);
}
--
1.7.10.4
_______________________________________________
mesa-dev mailing list
mesa-dev@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/mesa-dev
