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// Copyright 2019 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "common/assert.h"
#include "common/common_types.h"
#include "video_core/engines/shader_bytecode.h"
#include "video_core/shader/node_helper.h"
#include "video_core/shader/shader_ir.h"
namespace VideoCommon::Shader {
using Tegra::Shader::Instruction;
using Tegra::Shader::OpCode;
using Tegra::Shader::Pred;
using Tegra::Shader::VoteOperation;
namespace {
OperationCode GetOperationCode(VoteOperation vote_op) {
switch (vote_op) {
case VoteOperation::All:
return OperationCode::VoteAll;
case VoteOperation::Any:
return OperationCode::VoteAny;
case VoteOperation::Eq:
return OperationCode::VoteEqual;
default:
UNREACHABLE_MSG("Invalid vote operation={}", static_cast<u64>(vote_op));
return OperationCode::VoteAll;
}
}
} // Anonymous namespace
u32 ShaderIR::DecodeWarp(NodeBlock& bb, u32 pc) {
const Instruction instr = {program_code[pc]};
const auto opcode = OpCode::Decode(instr);
switch (opcode->get().GetId()) {
case OpCode::Id::VOTE: {
const Node value = GetPredicate(instr.vote.value, instr.vote.negate_value != 0);
const Node active = Operation(OperationCode::BallotThread, value);
const Node vote = Operation(GetOperationCode(instr.vote.operation), value);
SetRegister(bb, instr.gpr0, active);
SetPredicate(bb, instr.vote.dest_pred, vote);
break;
}
default:
UNIMPLEMENTED_MSG("Unhandled warp instruction: {}", opcode->get().GetName());
break;
}
return pc;
}
} // namespace VideoCommon::Shader
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