diff options
Diffstat (limited to 'src/video_core/shader/decode')
-rw-r--r-- | src/video_core/shader/decode/arithmetic_integer.cpp | 31 | ||||
-rw-r--r-- | src/video_core/shader/decode/register_set_predicate.cpp | 52 |
2 files changed, 56 insertions, 27 deletions
diff --git a/src/video_core/shader/decode/arithmetic_integer.cpp b/src/video_core/shader/decode/arithmetic_integer.cpp index 9af8c606d..a041519b7 100644 --- a/src/video_core/shader/decode/arithmetic_integer.cpp +++ b/src/video_core/shader/decode/arithmetic_integer.cpp @@ -35,15 +35,38 @@ u32 ShaderIR::DecodeArithmeticInteger(NodeBlock& bb, u32 pc) { case OpCode::Id::IADD_C: case OpCode::Id::IADD_R: case OpCode::Id::IADD_IMM: { - UNIMPLEMENTED_IF_MSG(instr.alu.saturate_d, "IADD saturation not implemented"); + UNIMPLEMENTED_IF_MSG(instr.alu.saturate_d, "IADD.SAT"); + UNIMPLEMENTED_IF_MSG(instr.iadd.x && instr.generates_cc, "IADD.X Rd.CC"); op_a = GetOperandAbsNegInteger(op_a, false, instr.alu_integer.negate_a, true); op_b = GetOperandAbsNegInteger(op_b, false, instr.alu_integer.negate_b, true); - const Node value = Operation(OperationCode::IAdd, PRECISE, op_a, op_b); + Node value = Operation(OperationCode::UAdd, op_a, op_b); - SetInternalFlagsFromInteger(bb, value, instr.generates_cc); - SetRegister(bb, instr.gpr0, value); + if (instr.iadd.x) { + Node carry = GetInternalFlag(InternalFlag::Carry); + Node x = Operation(OperationCode::Select, std::move(carry), Immediate(1), Immediate(0)); + value = Operation(OperationCode::UAdd, std::move(value), std::move(x)); + } + + if (instr.generates_cc) { + const Node i0 = Immediate(0); + + Node zero = Operation(OperationCode::LogicalIEqual, value, i0); + Node sign = Operation(OperationCode::LogicalILessThan, value, i0); + Node carry = Operation(OperationCode::LogicalAddCarry, op_a, op_b); + + Node pos_a = Operation(OperationCode::LogicalIGreaterThan, op_a, i0); + Node pos_b = Operation(OperationCode::LogicalIGreaterThan, op_b, i0); + Node pos = Operation(OperationCode::LogicalAnd, std::move(pos_a), std::move(pos_b)); + Node overflow = Operation(OperationCode::LogicalAnd, pos, sign); + + SetInternalFlag(bb, InternalFlag::Zero, std::move(zero)); + SetInternalFlag(bb, InternalFlag::Sign, std::move(sign)); + SetInternalFlag(bb, InternalFlag::Carry, std::move(carry)); + SetInternalFlag(bb, InternalFlag::Overflow, std::move(overflow)); + } + SetRegister(bb, instr.gpr0, std::move(value)); break; } case OpCode::Id::IADD3_C: diff --git a/src/video_core/shader/decode/register_set_predicate.cpp b/src/video_core/shader/decode/register_set_predicate.cpp index 8d54cce34..6116c31aa 100644 --- a/src/video_core/shader/decode/register_set_predicate.cpp +++ b/src/video_core/shader/decode/register_set_predicate.cpp @@ -2,6 +2,8 @@ // Licensed under GPLv2 or any later version // Refer to the license.txt file included. +#include <utility> + #include "common/assert.h" #include "common/common_types.h" #include "video_core/engines/shader_bytecode.h" @@ -10,20 +12,20 @@ namespace VideoCommon::Shader { +using std::move; using Tegra::Shader::Instruction; using Tegra::Shader::OpCode; namespace { -constexpr u64 NUM_PROGRAMMABLE_PREDICATES = 7; -} +constexpr u64 NUM_CONDITION_CODES = 4; +constexpr u64 NUM_PREDICATES = 7; +} // namespace u32 ShaderIR::DecodeRegisterSetPredicate(NodeBlock& bb, u32 pc) { const Instruction instr = {program_code[pc]}; const auto opcode = OpCode::Decode(instr); - UNIMPLEMENTED_IF(instr.p2r_r2p.mode != Tegra::Shader::R2pMode::Pr); - - const Node apply_mask = [&] { + Node apply_mask = [this, opcode, instr] { switch (opcode->get().GetId()) { case OpCode::Id::R2P_IMM: case OpCode::Id::P2R_IMM: @@ -34,39 +36,43 @@ u32 ShaderIR::DecodeRegisterSetPredicate(NodeBlock& bb, u32 pc) { } }(); - const auto offset = static_cast<u32>(instr.p2r_r2p.byte) * 8; + const u32 offset = static_cast<u32>(instr.p2r_r2p.byte) * 8; + + const bool cc = instr.p2r_r2p.mode == Tegra::Shader::R2pMode::Cc; + const u64 num_entries = cc ? NUM_CONDITION_CODES : NUM_PREDICATES; + const auto get_entry = [this, cc](u64 entry) { + return cc ? GetInternalFlag(static_cast<InternalFlag>(entry)) : GetPredicate(entry); + }; switch (opcode->get().GetId()) { case OpCode::Id::R2P_IMM: { - const Node mask = GetRegister(instr.gpr8); + Node mask = GetRegister(instr.gpr8); - for (u64 pred = 0; pred < NUM_PROGRAMMABLE_PREDICATES; ++pred) { - const auto shift = static_cast<u32>(pred); + for (u64 entry = 0; entry < num_entries; ++entry) { + const u32 shift = static_cast<u32>(entry); - const Node apply_compare = BitfieldExtract(apply_mask, shift, 1); - const Node condition = - Operation(OperationCode::LogicalUNotEqual, apply_compare, Immediate(0)); + Node apply = BitfieldExtract(apply_mask, shift, 1); + Node condition = Operation(OperationCode::LogicalUNotEqual, apply, Immediate(0)); - const Node value_compare = BitfieldExtract(mask, offset + shift, 1); - const Node value = - Operation(OperationCode::LogicalUNotEqual, value_compare, Immediate(0)); + Node compare = BitfieldExtract(mask, offset + shift, 1); + Node value = Operation(OperationCode::LogicalUNotEqual, move(compare), Immediate(0)); - const Node code = Operation(OperationCode::LogicalAssign, GetPredicate(pred), value); - bb.push_back(Conditional(condition, {code})); + Node code = Operation(OperationCode::LogicalAssign, get_entry(entry), move(value)); + bb.push_back(Conditional(condition, {move(code)})); } break; } case OpCode::Id::P2R_IMM: { Node value = Immediate(0); - for (u64 pred = 0; pred < NUM_PROGRAMMABLE_PREDICATES; ++pred) { - Node bit = Operation(OperationCode::Select, GetPredicate(pred), Immediate(1U << pred), + for (u64 entry = 0; entry < num_entries; ++entry) { + Node bit = Operation(OperationCode::Select, get_entry(entry), Immediate(1U << entry), Immediate(0)); - value = Operation(OperationCode::UBitwiseOr, std::move(value), std::move(bit)); + value = Operation(OperationCode::UBitwiseOr, move(value), move(bit)); } - value = Operation(OperationCode::UBitwiseAnd, std::move(value), apply_mask); - value = BitfieldInsert(GetRegister(instr.gpr8), std::move(value), offset, 8); + value = Operation(OperationCode::UBitwiseAnd, move(value), apply_mask); + value = BitfieldInsert(GetRegister(instr.gpr8), move(value), offset, 8); - SetRegister(bb, instr.gpr0, std::move(value)); + SetRegister(bb, instr.gpr0, move(value)); break; } default: |