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gl_shader_decompiler: Implement IADD instruction.

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This commit is contained in:
bunnei 2018-06-08 23:25:22 -04:00
parent 79e9c2e237
commit bbc4f369ed
2 changed files with 37 additions and 11 deletions
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16
src/video_core/engines/shader_bytecode.h
View file

@ -264,7 +264,7 @@ union Instruction {
BitField<39, 5, u64> shift_amount;
BitField<48, 1, u64> negate_b;
BitField<49, 1, u64> negate_a;
} iscadd;
} alu_integer;
union {
BitField<20, 8, u64> shift_position;
@ -434,6 +434,9 @@ public:
FMUL_R,
FMUL_IMM,
FMUL32_IMM,
IADD_C,
IADD_R,
IADD_IMM,
ISCADD_C, // Scale and Add
ISCADD_R,
ISCADD_IMM,
@ -489,10 +492,10 @@ public:
enum class Type {
Trivial,
Arithmetic,
ArithmeticInteger,
Bfe,
Logic,
Shift,
ScaledAdd,
Ffma,
Flow,
Memory,
@ -617,9 +620,12 @@ private:
INST("0101110001101---", Id::FMUL_R, Type::Arithmetic, "FMUL_R"),
INST("0011100-01101---", Id::FMUL_IMM, Type::Arithmetic, "FMUL_IMM"),
INST("00011110--------", Id::FMUL32_IMM, Type::Arithmetic, "FMUL32_IMM"),
INST("0100110000011---", Id::ISCADD_C, Type::ScaledAdd, "ISCADD_C"),
INST("0101110000011---", Id::ISCADD_R, Type::ScaledAdd, "ISCADD_R"),
INST("0011100-00011---", Id::ISCADD_IMM, Type::ScaledAdd, "ISCADD_IMM"),
INST("0100110000010---", Id::IADD_C, Type::ArithmeticInteger, "IADD_C"),
INST("0101110000010---", Id::IADD_R, Type::ArithmeticInteger, "IADD_R"),
INST("0011100-00010---", Id::IADD_IMM, Type::ArithmeticInteger, "IADD_IMM"),
INST("0100110000011---", Id::ISCADD_C, Type::ArithmeticInteger, "ISCADD_C"),
INST("0101110000011---", Id::ISCADD_R, Type::ArithmeticInteger, "ISCADD_R"),
INST("0011100-00011---", Id::ISCADD_IMM, Type::ArithmeticInteger, "ISCADD_IMM"),
INST("0101000010000---", Id::MUFU, Type::Arithmetic, "MUFU"),
INST("0100110010010---", Id::RRO_C, Type::Arithmetic, "RRO_C"),
INST("0101110010010---", Id::RRO_R, Type::Arithmetic, "RRO_R"),

32
src/video_core/renderer_opengl/gl_shader_decompiler.cpp
View file

@ -992,13 +992,13 @@ private:
break;
}
case OpCode::Type::ScaledAdd: {
case OpCode::Type::ArithmeticInteger: {
std::string op_a = regs.GetRegisterAsInteger(instr.gpr8);
if (instr.iscadd.negate_a)
if (instr.alu_integer.negate_a)
op_a = '-' + op_a;
std::string op_b = instr.iscadd.negate_b ? "-" : "";
std::string op_b = instr.alu_integer.negate_b ? "-" : "";
if (instr.is_b_imm) {
op_b += '(' + std::to_string(instr.alu.GetSignedImm20_20()) + ')';
@ -1011,10 +1011,30 @@ private:
}
}
std::string shift = std::to_string(instr.iscadd.shift_amount.Value());
switch (opcode->GetId()) {
case OpCode::Id::IADD_C:
case OpCode::Id::IADD_R:
case OpCode::Id::IADD_IMM: {
ASSERT_MSG(!instr.saturate_a, "Unimplemented");
regs.SetRegisterToInteger(instr.gpr0, true, 0, op_a + " + " + op_b, 1, 1);
break;
}
case OpCode::Id::ISCADD_C:
case OpCode::Id::ISCADD_R:
case OpCode::Id::ISCADD_IMM: {
std::string shift = std::to_string(instr.alu_integer.shift_amount.Value());
regs.SetRegisterToInteger(instr.gpr0, true, 0,
"((" + op_a + " << " + shift + ") + " + op_b + ')', 1, 1);
break;
}
default: {
NGLOG_CRITICAL(HW_GPU, "Unhandled ArithmeticInteger instruction: {}",
opcode->GetName());
UNREACHABLE();
}
}
regs.SetRegisterToInteger(instr.gpr0, true, 0,
"((" + op_a + " << " + shift + ") + " + op_b + ')', 1, 1);
break;
}
case OpCode::Type::Ffma: {