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r600/sfn: save some instructions when doing multisample on sample 0 

Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6879>
This commit is contained in:
Gert Wollny 2020-09-24 20:04:30 +02:00 committed by Marge Bot
parent 0c5dfd294a
commit 8540523610
1 changed files with 11 additions and 7 deletions
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18
src/gallium/drivers/r600/sfn/sfn_emittexinstruction.cpp
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@ -820,16 +820,20 @@ bool EmitTexInstruction::emit_tex_txf_ms(nir_tex_instr* instr, TexInputs& src)
emit_instruction(tex_sample_id_ir);
emit_instruction(new AluInstruction(op2_mullo_int, help,
{src.ms_index, PValue(new LiteralValue(4))},
{alu_write, alu_last_instr}));
emit_instruction(new AluInstruction(op2_lshr_int, src.coord.reg_i(3),
{sample_id_dest.reg_i(0), help},
{alu_write, alu_last_instr}));
if (src.ms_index->type() != Value::literal ||
static_cast<const LiteralValue&>(*src.ms_index).value() != 0) {
emit_instruction(new AluInstruction(op2_lshl_int, help,
src.ms_index, literal(2),
{alu_write, alu_last_instr}));
emit_instruction(new AluInstruction(op2_lshr_int, sample_id_dest.reg_i(0),
{sample_id_dest.reg_i(0), help},
{alu_write, alu_last_instr}));
}
emit_instruction(new AluInstruction(op2_and_int, src.coord.reg_i(3),
{src.coord.reg_i(3), PValue(new LiteralValue(15))},
{sample_id_dest.reg_i(0), PValue(new LiteralValue(15))},
{alu_write, alu_last_instr}));
auto dst = make_dest(*instr);