diff options
| -rw-r--r-- | src/video_core/shader/decode/bfe.cpp | 52 |
1 files changed, 27 insertions, 25 deletions
diff --git a/src/video_core/shader/decode/bfe.cpp b/src/video_core/shader/decode/bfe.cpp index e02bcd097..c3ef88373 100644 --- a/src/video_core/shader/decode/bfe.cpp +++ b/src/video_core/shader/decode/bfe.cpp @@ -17,32 +17,34 @@ u32 ShaderIR::DecodeBfe(NodeBlock& bb, u32 pc) { const Instruction instr = {program_code[pc]}; const auto opcode = OpCode::Decode(instr); - UNIMPLEMENTED_IF(instr.bfe.negate_b); - Node op_a = GetRegister(instr.gpr8); - op_a = GetOperandAbsNegInteger(op_a, false, instr.bfe.negate_a, false); - - switch (opcode->get().GetId()) { - case OpCode::Id::BFE_IMM: { - UNIMPLEMENTED_IF_MSG(instr.generates_cc, - "Condition codes generation in BFE is not implemented"); - - const Node inner_shift_imm = Immediate(static_cast<u32>(instr.bfe.GetLeftShiftValue())); - const Node outer_shift_imm = - Immediate(static_cast<u32>(instr.bfe.GetLeftShiftValue() + instr.bfe.shift_position)); - - const Node inner_shift = - Operation(OperationCode::ILogicalShiftLeft, NO_PRECISE, op_a, inner_shift_imm); - const Node outer_shift = - Operation(OperationCode::ILogicalShiftRight, NO_PRECISE, inner_shift, outer_shift_imm); - - SetInternalFlagsFromInteger(bb, outer_shift, instr.generates_cc); - SetRegister(bb, instr.gpr0, outer_shift); - break; - } - default: - UNIMPLEMENTED_MSG("Unhandled BFE instruction: {}", opcode->get().GetName()); - } + Node op_b = [&] { + switch (opcode->get().GetId()) { + case OpCode::Id::BFE_R: + return GetRegister(instr.gpr20); + case OpCode::Id::BFE_C: + return GetConstBuffer(instr.cbuf34.index, instr.cbuf34.GetOffset()); + case OpCode::Id::BFE_IMM: + return Immediate(instr.alu.GetSignedImm20_20()); + default: + UNREACHABLE(); + return Immediate(0); + } + }(); + + UNIMPLEMENTED_IF_MSG(instr.bfe.rd_cc, "Condition codes in BFE is not implemented"); + UNIMPLEMENTED_IF_MSG(instr.bfe.brev, "BREV in BFE is not implemented"); + + const bool is_signed = instr.bfe.is_signed; + + const auto start_position = SignedOperation(OperationCode::IBitfieldExtract, is_signed, op_b, + Immediate(0), Immediate(8)); + const auto bits = SignedOperation(OperationCode::IBitfieldExtract, is_signed, op_b, + Immediate(8), Immediate(8)); + + auto result = + SignedOperation(OperationCode::IBitfieldExtract, is_signed, op_a, start_position, bits); + SetRegister(bb, instr.gpr0, result); return pc; } |