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i965/fs: Implement FS_OPCODE_SET_SAMPLE_ID on Broadwell.

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Largely cut and paste from Gen7; it works the same way.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
This commit is contained in:
Kenneth Graunke 2014-02-10 15:09:22 -08:00
parent 80c4edfc27
commit 5476da79f8
2 changed files with 32 additions and 1 deletions
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4
src/mesa/drivers/dri/i965/brw_fs.h
View file

@ -720,6 +720,10 @@ private:
struct brw_reg index,
struct brw_reg offset);
void generate_mov_dispatch_to_flags(fs_inst *ir);
void generate_set_sample_id(fs_inst *ir,
struct brw_reg dst,
struct brw_reg src0,
struct brw_reg src1);
void generate_set_simd4x2_offset(fs_inst *ir,
struct brw_reg dst,
struct brw_reg offset);

29
src/mesa/drivers/dri/i965/gen8_fs_generator.cpp
View file

@ -596,6 +596,33 @@ gen8_fs_generator::generate_set_simd4x2_offset(fs_inst *ir,
MOV_RAW(retype(brw_vec1_reg(dst.file, dst.nr, 0), value.type), value);
}
/**
* Do a special ADD with vstride=1, width=4, hstride=0 for src1.
*/
void
gen8_fs_generator::generate_set_sample_id(fs_inst *ir,
struct brw_reg dst,
struct brw_reg src0,
struct brw_reg src1)
{
assert(dst.type == BRW_REGISTER_TYPE_D || dst.type == BRW_REGISTER_TYPE_UD);
assert(src0.type == BRW_REGISTER_TYPE_D || src0.type == BRW_REGISTER_TYPE_UD);
struct brw_reg reg = retype(stride(src1, 1, 4, 0), BRW_REGISTER_TYPE_UW);
unsigned save_exec_size = default_state.exec_size;
default_state.exec_size = BRW_EXECUTE_8;
gen8_instruction *add = ADD(dst, src0, reg);
gen8_set_mask_control(add, BRW_MASK_DISABLE);
if (dispatch_width == 16) {
add = ADD(offset(dst, 1), offset(src0, 1), suboffset(reg, 2));
gen8_set_mask_control(add, BRW_MASK_DISABLE);
}
default_state.exec_size = save_exec_size;
}
void
gen8_fs_generator::generate_code(exec_list *instructions)
{
@ -975,7 +1002,7 @@ gen8_fs_generator::generate_code(exec_list *instructions)
break;
case FS_OPCODE_SET_SAMPLE_ID:
assert(!"XXX: Missing Gen8 scalar support for SET_SAMPLE_ID");
generate_set_sample_id(ir, dst, src[0], src[1]);
break;
case FS_OPCODE_PACK_HALF_2x16_SPLIT: