diff options
Diffstat (limited to 'src/mesa/drivers/dri/i965/brw_eu_emit.c')
-rw-r--r-- | src/mesa/drivers/dri/i965/brw_eu_emit.c | 59 |
1 files changed, 55 insertions, 4 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_eu_emit.c b/src/mesa/drivers/dri/i965/brw_eu_emit.c index c731a93a8d..df2141660c 100644 --- a/src/mesa/drivers/dri/i965/brw_eu_emit.c +++ b/src/mesa/drivers/dri/i965/brw_eu_emit.c @@ -1003,15 +1003,18 @@ void brw_dp_READ_4( struct brw_compile *p, /** - * Read float[4] constant from VS constant buffer. + * Read float[4] constant(s) from VS constant buffer. + * For relative addressing, two float[4] constants will be read into 'dest'. + * Otherwise, one float[4] constant will be read into the lower half of 'dest'. */ void brw_dp_READ_4_vs(struct brw_compile *p, struct brw_reg dest, GLboolean relAddr, + struct brw_reg addrReg, GLuint location, GLuint bind_table_index) { - const GLuint msg_reg_nr = 1; + GLuint msg_reg_nr = 1; /* printf("vs const read msg, location %u, msg_reg_nr %d\n", @@ -1034,7 +1037,12 @@ void brw_dp_READ_4_vs(struct brw_compile *p, b = brw_message_reg(msg_reg_nr); b = retype(b, BRW_REGISTER_TYPE_UD); /*b = get_element_ud(b, 2);*/ - brw_MOV(p, b, brw_imm_ud(location)); + if (relAddr) { + brw_ADD(p, b, addrReg, brw_imm_ud(location)); + } + else { + brw_MOV(p, b, brw_imm_ud(location)); + } brw_pop_insn_state(p); } @@ -1053,13 +1061,56 @@ void brw_dp_READ_4_vs(struct brw_compile *p, brw_set_dp_read_message(insn, bind_table_index, - 0, /* msg_control (0 means 1 Oword) */ + 0, /* msg_control (0 means 1 Oword, lower half) */ BRW_DATAPORT_READ_MESSAGE_OWORD_BLOCK_READ, /* msg_type */ 0, /* source cache = data cache */ 1, /* msg_length */ 1, /* response_length (1 Oword) */ 0); /* eot */ } + + if (relAddr) { + /* second read to get second constant */ + msg_reg_nr++; + { + /* Setup MRF[1] with location/offset into const buffer */ + struct brw_reg b; + + brw_push_insn_state(p); + brw_set_compression_control(p, BRW_COMPRESSION_NONE); + brw_set_mask_control(p, BRW_MASK_DISABLE); + brw_set_predicate_control(p, BRW_PREDICATE_NONE); + + b = brw_message_reg(msg_reg_nr); + b = retype(b, BRW_REGISTER_TYPE_UD); + addrReg = suboffset(addrReg, 1); /* upper half of addrReg */ + brw_ADD(p, b, addrReg, brw_imm_ud(location)); + + brw_pop_insn_state(p); + } + + { + struct brw_instruction *insn = next_insn(p, BRW_OPCODE_SEND); + + insn->header.predicate_control = BRW_PREDICATE_NONE; + insn->header.compression_control = BRW_COMPRESSION_NONE; + insn->header.destreg__conditonalmod = msg_reg_nr; + insn->header.mask_control = BRW_MASK_DISABLE; + /*insn->header.access_mode = BRW_ALIGN_16;*/ + + brw_set_dest(insn, dest); + brw_set_src0(insn, brw_null_reg()); + + brw_set_dp_read_message(insn, + bind_table_index, + 1, /* msg_control (1 means 1 Oword, upper half) */ + BRW_DATAPORT_READ_MESSAGE_OWORD_BLOCK_READ, /* msg_type */ + 0, /* source cache = data cache */ + 1, /* msg_length */ + 1, /* response_length (1 Oword) */ + 0); /* eot */ + } + } } |