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Merge pull request #549 from bunnei/iadd 

gl_shader_decompiler: Implement IADD instruction.
This commit is contained in:
bunnei 2018-06-09 00:34:03 -04:00 committed by GitHub
parent 83517cb53a bbc4f369ed
commit 174c22e5f6
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 55 additions and 19 deletions
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18
src/video_core/engines/shader_bytecode.h
View File

@ -213,6 +213,7 @@ union Instruction {
BitField<28, 8, Register> gpr28;
BitField<39, 8, Register> gpr39;
BitField<48, 16, u64> opcode;
BitField<50, 1, u64> saturate_a;
union {
BitField<20, 19, u64> imm20_19;
@ -263,7 +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;
@ -331,7 +332,6 @@ union Instruction {
BitField<41, 2, u64> selector;
BitField<45, 1, u64> negate_a;
BitField<49, 1, u64> abs_a;
BitField<50, 1, u64> saturate_a;
union {
BitField<39, 2, F2iRoundingOp> rounding;
@ -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"),

52
src/video_core/renderer_opengl/gl_shader_decompiler.cpp
View File

@ -808,6 +808,8 @@ private:
case OpCode::Id::FMUL_C:
case OpCode::Id::FMUL_R:
case OpCode::Id::FMUL_IMM: {
ASSERT_MSG(!instr.saturate_a, "Unimplemented");
regs.SetRegisterToFloat(instr.gpr0, 0, op_a + " * " + op_b, 1, 1, instr.alu.abs_d);
break;
}
@ -821,10 +823,14 @@ private:
case OpCode::Id::FADD_C:
case OpCode::Id::FADD_R:
case OpCode::Id::FADD_IMM: {
ASSERT_MSG(!instr.saturate_a, "Unimplemented");
regs.SetRegisterToFloat(instr.gpr0, 0, op_a + " + " + op_b, 1, 1, instr.alu.abs_d);
break;
}
case OpCode::Id::MUFU: {
ASSERT_MSG(!instr.saturate_a, "Unimplemented");
switch (instr.sub_op) {
case SubOp::Cos:
regs.SetRegisterToFloat(instr.gpr0, 0, "cos(" + op_a + ')', 1, 1,
@ -986,13 +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()) + ')';
@ -1005,13 +1011,35 @@ 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();
}
}
break;
}
case OpCode::Type::Ffma: {
ASSERT_MSG(!instr.saturate_a, "Unimplemented");
std::string op_a = regs.GetRegisterAsFloat(instr.gpr8);
std::string op_b = instr.ffma.negate_b ? "-" : "";
std::string op_c = instr.ffma.negate_c ? "-" : "";
@ -1051,7 +1079,7 @@ private:
case OpCode::Type::Conversion: {
ASSERT_MSG(instr.conversion.size == Register::Size::Word, "Unimplemented");
ASSERT_MSG(!instr.conversion.negate_a, "Unimplemented");
ASSERT_MSG(!instr.conversion.saturate_a, "Unimplemented");
ASSERT_MSG(!instr.saturate_a, "Unimplemented");
switch (opcode->GetId()) {
case OpCode::Id::I2I_R: {
@ -1081,6 +1109,8 @@ private:
break;
}
case OpCode::Id::F2F_R: {
ASSERT_MSG(!instr.saturate_a, "Unimplemented");
std::string op_a = regs.GetRegisterAsFloat(instr.gpr20);
switch (instr.conversion.f2f.rounding) {
@ -1198,8 +1228,8 @@ private:
const std::string op_b = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
const std::string sampler = GetSampler(instr.sampler);
const std::string coord = "vec2 coords = vec2(" + op_a + ", " + op_b + ");";
// Add an extra scope and declare the texture coords inside to prevent overwriting
// them in case they are used as outputs of the texs instruction.
// Add an extra scope and declare the texture coords inside to prevent
// overwriting them in case they are used as outputs of the texs instruction.
shader.AddLine("{");
++shader.scope;
shader.AddLine(coord);
@ -1230,8 +1260,8 @@ private:
shader.AddLine(coord);
const std::string texture = "texture(" + sampler + ", coords)";
// TEXS has two destination registers. RG goes into gpr0+0 and gpr0+1, and BA goes
// into gpr28+0 and gpr28+1
// TEXS has two destination registers. RG goes into gpr0+0 and gpr0+1, and BA
// goes into gpr28+0 and gpr28+1
size_t offset{};
for (const auto& dest : {instr.gpr0.Value(), instr.gpr28.Value()}) {
@ -1412,8 +1442,8 @@ private:
shader.AddLine("return true;");
if (instr.pred.pred_index == static_cast<u64>(Pred::UnusedIndex)) {
// If this is an unconditional exit then just end processing here, otherwise we
// have to account for the possibility of the condition not being met, so
// If this is an unconditional exit then just end processing here, otherwise
// we have to account for the possibility of the condition not being met, so
// continue processing the next instruction.
offset = PROGRAM_END - 1;
}