diff options
Diffstat (limited to 'src/mesa')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_eu_emit.c | 46 |
1 files changed, 29 insertions, 17 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_eu_emit.c b/src/mesa/drivers/dri/i965/brw_eu_emit.c index 4becdf069f..03e4cdde33 100644 --- a/src/mesa/drivers/dri/i965/brw_eu_emit.c +++ b/src/mesa/drivers/dri/i965/brw_eu_emit.c @@ -320,14 +320,15 @@ static void brw_set_dp_read_message( struct brw_instruction *insn, { brw_set_src1(insn, brw_imm_d(0)); - insn->bits3.dp_read.binding_table_index = binding_table_index; - insn->bits3.dp_read.msg_control = msg_control; - insn->bits3.dp_read.msg_type = msg_type; - insn->bits3.dp_read.target_cache = target_cache; - insn->bits3.dp_read.response_length = response_length; - insn->bits3.dp_read.msg_length = msg_length; - insn->bits3.dp_read.msg_target = BRW_MESSAGE_TARGET_DATAPORT_READ; - insn->bits3.dp_read.end_of_thread = end_of_thread; + insn->bits3.dp_read.binding_table_index = binding_table_index; /*0:7*/ + insn->bits3.dp_read.msg_control = msg_control; /*8:11*/ + insn->bits3.dp_read.msg_type = msg_type; /*12:13*/ + insn->bits3.dp_read.target_cache = target_cache; /*14:15*/ + insn->bits3.dp_read.response_length = response_length; /*16:19*/ + insn->bits3.dp_read.msg_length = msg_length; /*20:23*/ + insn->bits3.dp_read.msg_target = BRW_MESSAGE_TARGET_DATAPORT_READ; /*24:27*/ + insn->bits3.dp_read.pad1 = 0; /*28:30*/ + insn->bits3.dp_read.end_of_thread = end_of_thread; /*31*/ } static void brw_set_sampler_message(struct brw_context *brw, @@ -770,7 +771,7 @@ void brw_CMP(struct brw_compile *p, * Helpers for the various SEND message types: */ -/* Invert 8 values +/** Extended math function, float[8]. */ void brw_math( struct brw_compile *p, struct brw_reg dest, @@ -802,7 +803,9 @@ void brw_math( struct brw_compile *p, data_type); } -/* Use 2 send instructions to invert 16 elements +/** + * Extended math function, float[16]. + * Use 2 send instructions. */ void brw_math_16( struct brw_compile *p, struct brw_reg dest, @@ -855,8 +858,11 @@ void brw_math_16( struct brw_compile *p, } - - +/** + * Write block of 16 dwords/floats to the data port Render Cache scratch buffer. + * Scratch offset should be a multiple of 64. + * Used for register spilling. + */ void brw_dp_WRITE_16( struct brw_compile *p, struct brw_reg src, GLuint msg_reg_nr, @@ -867,6 +873,7 @@ void brw_dp_WRITE_16( struct brw_compile *p, brw_set_mask_control(p, BRW_MASK_DISABLE); brw_set_compression_control(p, BRW_COMPRESSION_NONE); + /* set message header global offset field (reg 0, element 2) */ brw_MOV(p, retype(brw_vec1_grf(0, 2), BRW_REGISTER_TYPE_D), brw_imm_d(scratch_offset)); @@ -887,7 +894,7 @@ void brw_dp_WRITE_16( struct brw_compile *p, brw_set_src0(insn, src); brw_set_dp_write_message(insn, - 255, /* bti */ + 255, /* binding table index (255=stateless) */ BRW_DATAPORT_OWORD_BLOCK_4_OWORDS, /* msg_control */ BRW_DATAPORT_WRITE_MESSAGE_OWORD_BLOCK_WRITE, /* msg_type */ msg_length, @@ -895,10 +902,14 @@ void brw_dp_WRITE_16( struct brw_compile *p, 0, /* response_length */ 0); /* eot */ } - } +/** + * Read block of 16 dwords/floats from the data port Render Cache scratch buffer. + * Scratch offset should be a multiple of 64. + * Used for register spilling. + */ void brw_dp_READ_16( struct brw_compile *p, struct brw_reg dest, GLuint msg_reg_nr, @@ -909,6 +920,7 @@ void brw_dp_READ_16( struct brw_compile *p, brw_set_compression_control(p, BRW_COMPRESSION_NONE); brw_set_mask_control(p, BRW_MASK_DISABLE); + /* set message header global offset field (reg 0, element 2) */ brw_MOV(p, retype(brw_vec1_grf(0, 2), BRW_REGISTER_TYPE_D), brw_imm_d(scratch_offset)); @@ -927,10 +939,10 @@ void brw_dp_READ_16( struct brw_compile *p, brw_set_src0(insn, retype(brw_vec8_grf(0, 0), BRW_REGISTER_TYPE_UW)); brw_set_dp_read_message(insn, - 255, /* bti */ - 3, /* msg_control */ + 255, /* binding table index (255=stateless) */ + 3, /* msg_control (3 means 4 Owords) */ BRW_DATAPORT_READ_MESSAGE_OWORD_BLOCK_READ, /* msg_type */ - 1, /* target cache */ + 1, /* target cache (render/scratch) */ 1, /* msg_length */ 2, /* response_length */ 0); /* eot */ |