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i965: Add a header_present flag for setting up dp read messages.

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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.
This commit is contained in:
Eric Anholt 2012-11-09 11:17:48 -08:00
parent 8f05b2f2b0
commit 78e9c57a3e
3 changed files with 7 additions and 1 deletions
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1
src/mesa/drivers/dri/i965/brw_eu.h
View file

@ -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,

5
src/mesa/drivers/dri/i965/brw_eu_emit.c
View file

@ -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);

2
src/mesa/drivers/dri/i965/brw_vec4_emit.cpp
View file

@ -463,6 +463,7 @@ vec4_generator::generate_scratch_read(vec4_instruction *inst,
msg_type,
BRW_DATAPORT_READ_TARGET_RENDER_CACHE,
2, /* mlen */
true, /* header_present */
1 /* rlen */);
}
@ -596,6 +597,7 @@ vec4_generator::generate_pull_constant_load(vec4_instruction *inst,
msg_type,
BRW_DATAPORT_READ_TARGET_DATA_CACHE,
2, /* mlen */
true, /* header_present */
1 /* rlen */);
}