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i965/fs: Make an emit_discard_jump() function to reduce duplication.

Browse source 
This is already copied in two places, and I want to copy it to a third
place.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Carl Worth <cworth@cworth.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
This commit is contained in:
Kenneth Graunke 2015-03-05 15:48:39 -08:00
parent 09bfa326a9
commit 8a0946f3b1
4 changed files with 18 additions and 21 deletions
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15
src/mesa/drivers/dri/i965/brw_fs.cpp
View file

@ -1693,6 +1693,21 @@ fs_visitor::emit_math(enum opcode opcode, fs_reg dst, fs_reg src0, fs_reg src1)
return inst;
}
void
fs_visitor::emit_discard_jump()
{
/* For performance, after a discard, jump to the end of the
* shader if all relevant channels have been discarded.
*/
fs_inst *discard_jump = emit(FS_OPCODE_DISCARD_JUMP);
discard_jump->flag_subreg = 1;
discard_jump->predicate = (dispatch_width == 8)
? BRW_PREDICATE_ALIGN1_ANY8H
: BRW_PREDICATE_ALIGN1_ANY16H;
discard_jump->predicate_inverse = true;
}
void
fs_visitor::assign_curb_setup()
{

1
src/mesa/drivers/dri/i965/brw_fs.h
View file

@ -307,6 +307,7 @@ public:
const fs_reg &a);
void emit_minmax(enum brw_conditional_mod conditionalmod, const fs_reg &dst,
const fs_reg &src0, const fs_reg &src1);
void emit_discard_jump();
bool try_emit_b2f_of_comparison(ir_expression *ir);
bool try_emit_saturate(ir_expression *ir);
bool try_emit_line(ir_expression *ir);

12
src/mesa/drivers/dri/i965/brw_fs_nir.cpp
View file

@ -1363,18 +1363,8 @@ fs_visitor::nir_emit_intrinsic(nir_intrinsic_instr *instr)
cmp->flag_subreg = 1;
if (brw->gen >= 6) {
/* For performance, after a discard, jump to the end of the shader.
* Only jump if all relevant channels have been discarded.
*/
fs_inst *discard_jump = emit(FS_OPCODE_DISCARD_JUMP);
discard_jump->flag_subreg = 1;
discard_jump->predicate = (dispatch_width == 8)
? BRW_PREDICATE_ALIGN1_ANY8H
: BRW_PREDICATE_ALIGN1_ANY16H;
discard_jump->predicate_inverse = true;
emit_discard_jump();
}
break;
}

11
src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
View file

@ -2497,16 +2497,7 @@ fs_visitor::visit(ir_discard *ir)
cmp->flag_subreg = 1;
if (brw->gen >= 6) {
/* For performance, after a discard, jump to the end of the shader.
* Only jump if all relevant channels have been discarded.
*/
fs_inst *discard_jump = emit(FS_OPCODE_DISCARD_JUMP);
discard_jump->flag_subreg = 1;
discard_jump->predicate = (dispatch_width == 8)
? BRW_PREDICATE_ALIGN1_ANY8H
: BRW_PREDICATE_ALIGN1_ANY16H;
discard_jump->predicate_inverse = true;
emit_discard_jump();
}
}