diff options
| author | ReinUsesLisp <reinuseslisp@airmail.cc> | 2020-04-25 21:56:11 -0300 |
|---|---|---|
| committer | ReinUsesLisp <reinuseslisp@airmail.cc> | 2020-04-25 22:55:26 -0300 |
| commit | 255197e64363f9286ed145cafdeb129c85c16621 (patch) | |
| tree | 976cb93129b86277b8136f21f3c7c2492bb8694d /src/video_core/shader | |
| parent | ffc5ec6fa816b1bf56044b9d8cf5f1935abe77ee (diff) | |
shader/arithmetic_integer: Implement CC for IADD
Diffstat (limited to 'src/video_core/shader')
| -rw-r--r-- | src/video_core/shader/decode/arithmetic_integer.cpp | 22 | ||||
| -rw-r--r-- | src/video_core/shader/node.h | 2 |
2 files changed, 21 insertions, 3 deletions
diff --git a/src/video_core/shader/decode/arithmetic_integer.cpp b/src/video_core/shader/decode/arithmetic_integer.cpp index 9af8c606d..99b4b6342 100644 --- a/src/video_core/shader/decode/arithmetic_integer.cpp +++ b/src/video_core/shader/decode/arithmetic_integer.cpp @@ -40,10 +40,26 @@ u32 ShaderIR::DecodeArithmeticInteger(NodeBlock& bb, u32 pc) { 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::IAdd, op_a, op_b); - SetInternalFlagsFromInteger(bb, value, instr.generates_cc); - SetRegister(bb, instr.gpr0, value); + 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/node.h b/src/video_core/shader/node.h index 3eee961f5..3f5a7bc7a 100644 --- a/src/video_core/shader/node.h +++ b/src/video_core/shader/node.h @@ -132,6 +132,8 @@ enum class OperationCode { LogicalUNotEqual, /// (uint a, uint b) -> bool LogicalUGreaterEqual, /// (uint a, uint b) -> bool + LogicalAddCarry, /// (uint a, uint b) -> bool + Logical2HLessThan, /// (MetaHalfArithmetic, f16vec2 a, f16vec2) -> bool2 Logical2HEqual, /// (MetaHalfArithmetic, f16vec2 a, f16vec2) -> bool2 Logical2HLessEqual, /// (MetaHalfArithmetic, f16vec2 a, f16vec2) -> bool2 |