diff options
Diffstat (limited to 'src/video_core/shader/decode/bfe.cpp')
| -rw-r--r-- | src/video_core/shader/decode/bfe.cpp | 31 |
1 files changed, 25 insertions, 6 deletions
diff --git a/src/video_core/shader/decode/bfe.cpp b/src/video_core/shader/decode/bfe.cpp index c3ef88373..911d53657 100644 --- a/src/video_core/shader/decode/bfe.cpp +++ b/src/video_core/shader/decode/bfe.cpp @@ -33,17 +33,36 @@ u32 ShaderIR::DecodeBfe(NodeBlock& bb, u32 pc) { }(); 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)); + if (instr.bfe.brev) { + const auto swap = [&](u32 s, u32 mask) { + Node v1 = + SignedOperation(OperationCode::ILogicalShiftRight, is_signed, op_a, Immediate(s)); + if (mask != 0) { + v1 = SignedOperation(OperationCode::IBitwiseAnd, is_signed, v1, Immediate(mask)); + } + Node v2 = op_a; + if (mask != 0) { + v2 = SignedOperation(OperationCode::IBitwiseAnd, is_signed, op_a, Immediate(mask)); + } + v2 = SignedOperation(OperationCode::ILogicalShiftLeft, is_signed, v2, Immediate(s)); + return SignedOperation(OperationCode::IBitwiseOr, is_signed, v1, v2); + }; + op_a = swap(1, 0x55555555U); + op_a = swap(2, 0x33333333U); + op_a = swap(4, 0x0F0F0F0FU); + op_a = swap(8, 0x00FF00FFU); + op_a = swap(16, 0); + } + + const auto offset = 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); + const auto result = + SignedOperation(OperationCode::IBitfieldExtract, is_signed, op_a, offset, bits); SetRegister(bb, instr.gpr0, result); return pc; |