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shader_decode: Implement LOP32I

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This commit is contained in:
ReinUsesLisp 2018-12-21 02:02:15 -03:00
parent 501284a81a
commit 39f1c6246a
2 changed files with 72 additions and 1 deletions
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68
src/video_core/shader/decode/arithmetic_integer_immediate.cpp
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@ -10,15 +10,81 @@
namespace VideoCommon::Shader {
using Tegra::Shader::Instruction;
using Tegra::Shader::LogicOperation;
using Tegra::Shader::OpCode;
using Tegra::Shader::Pred;
using Tegra::Shader::PredicateResultMode;
using Tegra::Shader::Register;
u32 ShaderIR::DecodeArithmeticIntegerImmediate(BasicBlock& bb, u32 pc) {
const Instruction instr = {program_code[pc]};
const auto opcode = OpCode::Decode(instr);
UNIMPLEMENTED();
Node op_a = GetRegister(instr.gpr8);
Node op_b = Immediate(static_cast<s32>(instr.alu.imm20_32));
switch (opcode->get().GetId()) {
case OpCode::Id::LOP32I: {
UNIMPLEMENTED_IF_MSG(instr.op_32.generates_cc,
"Condition codes generation in LOP32I is not implemented");
if (instr.alu.lop32i.invert_a)
op_a = Operation(OperationCode::IBitwiseNot, NO_PRECISE, op_a);
if (instr.alu.lop32i.invert_b)
op_b = Operation(OperationCode::IBitwiseNot, NO_PRECISE, op_b);
WriteLogicOperation(bb, instr.gpr0, instr.alu.lop32i.operation, op_a, op_b,
Tegra::Shader::PredicateResultMode::None,
Tegra::Shader::Pred::UnusedIndex);
break;
}
default:
UNIMPLEMENTED_MSG("Unhandled ArithmeticIntegerImmediate instruction: {}",
opcode->get().GetName());
}
return pc;
}
void ShaderIR::WriteLogicOperation(BasicBlock& bb, Register dest, LogicOperation logic_op,
Node op_a, Node op_b, PredicateResultMode predicate_mode,
Pred predicate) {
const Node result = [&]() {
switch (logic_op) {
case LogicOperation::And:
return Operation(OperationCode::IBitwiseAnd, PRECISE, op_a, op_b);
case LogicOperation::Or:
return Operation(OperationCode::IBitwiseOr, PRECISE, op_a, op_b);
case LogicOperation::Xor:
return Operation(OperationCode::IBitwiseXor, PRECISE, op_a, op_b);
case LogicOperation::PassB:
return op_b;
default:
UNIMPLEMENTED_MSG("Unimplemented logic operation={}", static_cast<u32>(logic_op));
}
}();
if (dest != Register::ZeroIndex) {
SetRegister(bb, dest, result);
}
using Tegra::Shader::PredicateResultMode;
// Write the predicate value depending on the predicate mode.
switch (predicate_mode) {
case PredicateResultMode::None:
// Do nothing.
return;
case PredicateResultMode::NotZero: {
// Set the predicate to true if the result is not zero.
const Node compare = Operation(OperationCode::LogicalIEqual, result, Immediate(0));
SetPredicate(bb, static_cast<u64>(predicate), compare);
break;
}
default:
UNIMPLEMENTED_MSG("Unimplemented predicate result mode: {}",
static_cast<u32>(predicate_mode));
}
}
} // namespace VideoCommon::Shader

5
src/video_core/shader/shader_ir.h
View File

@ -697,6 +697,11 @@ private:
Tegra::Shader::TextureProcessMode process_mode, bool depth_compare,
bool is_array, std::size_t bias_offset, std::vector<Node>&& coords);
void WriteLogicOperation(BasicBlock& bb, Tegra::Shader::Register dest,
Tegra::Shader::LogicOperation logic_op, Node op_a, Node op_b,
Tegra::Shader::PredicateResultMode predicate_mode,
Tegra::Shader::Pred predicate);
template <typename... T>
inline Node Operation(OperationCode code, const T*... operands) {
return StoreNode(OperationNode(code, operands...));