Mirrors/yuzu
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

shader_decode: Implement HSET2

Browse source
This commit is contained in:
ReinUsesLisp 2018-12-24 00:51:52 -03:00
parent 2df55985b6
commit b11e0b94c7
3 changed files with 50 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

44
src/video_core/shader/decode/half_set.cpp
View file

@ -2,6 +2,8 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <array>
#include "common/assert.h"
#include "common/common_types.h"
#include "video_core/engines/shader_bytecode.h"
@ -16,7 +18,47 @@ u32 ShaderIR::DecodeHalfSet(BasicBlock& bb, u32 pc) {
const Instruction instr = {program_code[pc]};
const auto opcode = OpCode::Decode(instr);
UNIMPLEMENTED();
UNIMPLEMENTED_IF(instr.hset2.ftz != 0);
// instr.hset2.type_a
// instr.hset2.type_b
Node op_a = GetRegister(instr.gpr8);
Node op_b = [&]() {
switch (opcode->get().GetId()) {
case OpCode::Id::HSET2_R:
return GetRegister(instr.gpr20);
default:
UNREACHABLE();
return Immediate(0);
}
}();
op_a = GetOperandAbsNegHalf(op_a, instr.hset2.abs_a, instr.hset2.negate_a);
op_b = GetOperandAbsNegHalf(op_b, instr.hset2.abs_b, instr.hset2.negate_b);
const Node second_pred = GetPredicate(instr.hset2.pred39, instr.hset2.neg_pred);
MetaHalfArithmetic meta{false, {instr.hset2.type_a, instr.hset2.type_b}};
const Node comparison_pair = GetPredicateComparisonHalf(instr.hset2.cond, meta, op_a, op_b);
const OperationCode combiner = GetPredicateCombiner(instr.hset2.op);
// HSET2 operates on each half float in the pack.
std::array<Node, 2> values;
for (u32 i = 0; i < 2; ++i) {
const u32 raw_value = instr.hset2.bf ? 0x3c00 : 0xffff;
const Node true_value = Immediate(raw_value << (i * 16));
const Node false_value = Immediate(0);
const Node comparison =
Operation(OperationCode::LogicalPick2, comparison_pair, Immediate(i));
const Node predicate = Operation(combiner, comparison, second_pred);
values[i] = Operation(OperationCode::Select, NO_PRECISE, predicate, true_value, false_value);
}
const Node value = Operation(OperationCode::UBitwiseOr, NO_PRECISE, values[0], values[1]);
SetRegister(bb, instr.gpr0, value);
return pc;
}