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Merge pull request #396 from Subv/shader_ops 

Shaders: Implemented the FSET instruction.
pull/15/merge
bunnei 8 years ago
committed by GitHub
parent
dd6c67c627 e9ad8e9185
commit
f81b915fd8
No known key found for this signature in database GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 89 additions and 9 deletions
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  1. 43
      src/video_core/engines/shader_bytecode.h
  2. 55
      src/video_core/renderer_opengl/gl_shader_decompiler.cpp

43
src/video_core/engines/shader_bytecode.h
View File

@ -214,6 +214,20 @@ union Instruction {
BitField<56, 1, u64> neg_b;
} fsetp;
union {
BitField<39, 3, u64> pred39;
BitField<42, 1, u64> neg_pred;
BitField<43, 1, u64> neg_a;
BitField<44, 1, u64> abs_b;
BitField<45, 2, PredOperation> op;
BitField<48, 4, PredCondition> cond;
BitField<53, 1, u64> neg_b;
BitField<54, 1, u64> abs_a;
BitField<52, 1, u64> bf;
BitField<55, 1, u64> ftz;
BitField<56, 1, u64> neg_imm;
} fset;
BitField<61, 1, u64> is_b_imm;
BitField<60, 1, u64> is_b_gpr;
BitField<59, 1, u64> is_c_gpr;
@ -261,6 +275,9 @@ public:
I2F_C,
I2F_R,
I2F_IMM,
I2I_C,
I2I_R,
I2I_IMM,
LOP32I,
MOV_C,
MOV_R,
@ -272,6 +289,9 @@ public:
FSETP_C, // Set Predicate
FSETP_R,
FSETP_IMM,
FSET_C,
FSET_R,
FSET_IMM,
ISETP_C,
ISETP_IMM,
ISETP_R,
@ -283,8 +303,9 @@ public:
Ffma,
Flow,
Memory,
FloatPredicate,
IntegerPredicate,
FloatSet,
FloatSetPredicate,
IntegerSetPredicate,
Unknown,
};
@ -409,6 +430,9 @@ private:
INST("0100110010111---", Id::I2F_C, Type::Arithmetic, "I2F_C"),
INST("0101110010111---", Id::I2F_R, Type::Arithmetic, "I2F_R"),
INST("0011100-10111---", Id::I2F_IMM, Type::Arithmetic, "I2F_IMM"),
INST("0100110011100---", Id::I2I_C, Type::Arithmetic, "I2I_C"),
INST("0101110011100---", Id::I2I_R, Type::Arithmetic, "I2I_R"),
INST("01110001-1000---", Id::I2I_IMM, Type::Arithmetic, "I2I_IMM"),
INST("000001----------", Id::LOP32I, Type::Arithmetic, "LOP32I"),
INST("0100110010011---", Id::MOV_C, Type::Arithmetic, "MOV_C"),
INST("0101110010011---", Id::MOV_R, Type::Arithmetic, "MOV_R"),
@ -417,12 +441,15 @@ private:
INST("0100110000101---", Id::SHR_C, Type::Arithmetic, "SHR_C"),
INST("0101110000101---", Id::SHR_R, Type::Arithmetic, "SHR_R"),
INST("0011100-00101---", Id::SHR_IMM, Type::Arithmetic, "SHR_IMM"),
INST("010010111011----", Id::FSETP_C, Type::FloatPredicate, "FSETP_C"),
INST("010110111011----", Id::FSETP_R, Type::FloatPredicate, "FSETP_R"),
INST("0011011-1011----", Id::FSETP_IMM, Type::FloatPredicate, "FSETP_IMM"),
INST("010010110110----", Id::ISETP_C, Type::IntegerPredicate, "ISETP_C"),
INST("010110110110----", Id::ISETP_R, Type::IntegerPredicate, "ISETP_R"),
INST("0011011-0110----", Id::ISETP_IMM, Type::IntegerPredicate, "ISETP_IMM"),
INST("01011000--------", Id::FSET_R, Type::FloatSet, "FSET_R"),
INST("0100100---------", Id::FSET_C, Type::FloatSet, "FSET_C"),
INST("0011000---------", Id::FSET_IMM, Type::FloatSet, "FSET_IMM"),
INST("010010111011----", Id::FSETP_C, Type::FloatSetPredicate, "FSETP_C"),
INST("010110111011----", Id::FSETP_R, Type::FloatSetPredicate, "FSETP_R"),
INST("0011011-1011----", Id::FSETP_IMM, Type::FloatSetPredicate, "FSETP_IMM"),
INST("010010110110----", Id::ISETP_C, Type::IntegerSetPredicate, "ISETP_C"),
INST("010110110110----", Id::ISETP_R, Type::IntegerSetPredicate, "ISETP_R"),
INST("0011011-0110----", Id::ISETP_IMM, Type::IntegerSetPredicate, "ISETP_IMM"),
};
#undef INST
std::stable_sort(table.begin(), table.end(), [](const auto& a, const auto& b) {

55
src/video_core/renderer_opengl/gl_shader_decompiler.cpp
View File

@ -519,7 +519,7 @@ private:
}
break;
}
case OpCode::Type::FloatPredicate: {
case OpCode::Type::FloatSetPredicate: {
std::string op_a = instr.fsetp.neg_a ? "-" : "";
op_a += GetRegister(instr.gpr8);
@ -570,6 +570,59 @@ private:
}
break;
}
case OpCode::Type::FloatSet: {
std::string dest = GetRegister(instr.gpr0);
std::string op_a = instr.fset.neg_a ? "-" : "";
op_a += GetRegister(instr.gpr8);
if (instr.fset.abs_a) {
op_a = "abs(" + op_a + ')';
}
std::string op_b = instr.fset.neg_b ? "-" : "";
if (instr.is_b_imm) {
std::string imm = GetImmediate19(instr);
if (instr.fset.neg_imm)
op_b += "(-" + imm + ')';
else
op_b += imm;
} else {
if (instr.is_b_gpr) {
op_b += GetRegister(instr.gpr20);
} else {
op_b += GetUniform(instr.uniform);
}
}
if (instr.fset.abs_b) {
op_b = "abs(" + op_b + ")";
}
using Tegra::Shader::Pred;
ASSERT_MSG(instr.fset.pred39 == static_cast<u64>(Pred::UnusedIndex),
"Compound predicates are not implemented");
// The fset instruction sets a register to 1.0 if the condition is true, and to 0
// otherwise.
using Tegra::Shader::PredCondition;
switch (instr.fset.cond) {
case PredCondition::LessThan:
SetDest(0, dest, "((" + op_a + ") < (" + op_b + ")) ? 1.0 : 0", 1, 1);
break;
case PredCondition::Equal:
SetDest(0, dest, "((" + op_a + ") == (" + op_b + ")) ? 1.0 : 0", 1, 1);
break;
case PredCondition::GreaterThan:
SetDest(0, dest, "((" + op_a + ") > (" + op_b + ")) ? 1.0 : 0", 1, 1);
break;
default:
NGLOG_CRITICAL(HW_GPU, "Unhandled predicate condition: {} (a: {}, b: {})",
static_cast<unsigned>(instr.fset.cond.Value()), op_a, op_b);
UNREACHABLE();
}
break;
}
default: {
switch (opcode->GetId()) {
case OpCode::Id::EXIT: {

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