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-rw-r--r--src/video_core/shader/decode/xmad.cpp63
1 files changed, 48 insertions, 15 deletions
diff --git a/src/video_core/shader/decode/xmad.cpp b/src/video_core/shader/decode/xmad.cpp
index 206961909..fbd7e9a17 100644
--- a/src/video_core/shader/decode/xmad.cpp
+++ b/src/video_core/shader/decode/xmad.cpp
@@ -12,6 +12,7 @@ namespace VideoCommon::Shader {
using Tegra::Shader::Instruction;
using Tegra::Shader::OpCode;
+using Tegra::Shader::PredCondition;
u32 ShaderIR::DecodeXmad(NodeBlock& bb, u32 pc) {
const Instruction instr = {program_code[pc]};
@@ -63,15 +64,18 @@ u32 ShaderIR::DecodeXmad(NodeBlock& bb, u32 pc) {
}
}();
- op_a = BitfieldExtract(op_a, instr.xmad.high_a ? 16 : 0, 16);
+ op_a = SignedOperation(OperationCode::IBitfieldExtract, is_signed_a, std::move(op_a),
+ instr.xmad.high_a ? Immediate(16) : Immediate(0), Immediate(16));
const Node original_b = op_b;
- op_b = BitfieldExtract(op_b, is_high_b ? 16 : 0, 16);
+ op_b = SignedOperation(OperationCode::IBitfieldExtract, is_signed_b, std::move(op_b),
+ is_high_b ? Immediate(16) : Immediate(0), Immediate(16));
- // TODO(Rodrigo): Use an appropiate sign for this operation
- Node product = Operation(OperationCode::IMul, NO_PRECISE, op_a, op_b);
+ // we already check sign_a and sign_b is difference or not before so just use one in here.
+ Node product = SignedOperation(OperationCode::IMul, is_signed_a, op_a, op_b);
if (is_psl) {
- product = Operation(OperationCode::ILogicalShiftLeft, NO_PRECISE, product, Immediate(16));
+ product =
+ SignedOperation(OperationCode::ILogicalShiftLeft, is_signed_a, product, Immediate(16));
}
SetTemporary(bb, 0, product);
product = GetTemporary(0);
@@ -88,12 +92,40 @@ u32 ShaderIR::DecodeXmad(NodeBlock& bb, u32 pc) {
return BitfieldExtract(original_c, 16, 16);
case Tegra::Shader::XmadMode::CBcc: {
const Node shifted_b = SignedOperation(OperationCode::ILogicalShiftLeft, is_signed_b,
- NO_PRECISE, original_b, Immediate(16));
- return SignedOperation(OperationCode::IAdd, is_signed_c, NO_PRECISE, original_c,
- shifted_b);
+ original_b, Immediate(16));
+ return SignedOperation(OperationCode::IAdd, is_signed_c, original_c, shifted_b);
+ }
+ case Tegra::Shader::XmadMode::CSfu: {
+ const Node comp_a = GetPredicateComparisonInteger(PredCondition::Equal, is_signed_a,
+ op_a, Immediate(0));
+ const Node comp_b = GetPredicateComparisonInteger(PredCondition::Equal, is_signed_b,
+ op_b, Immediate(0));
+ const Node comp = Operation(OperationCode::LogicalOr, comp_a, comp_b);
+
+ const Node comp_minus_a = GetPredicateComparisonInteger(
+ PredCondition::NotEqual, is_signed_a,
+ SignedOperation(OperationCode::IBitwiseAnd, is_signed_a, op_a,
+ Immediate(0x80000000)),
+ Immediate(0));
+ const Node comp_minus_b = GetPredicateComparisonInteger(
+ PredCondition::NotEqual, is_signed_b,
+ SignedOperation(OperationCode::IBitwiseAnd, is_signed_b, op_b,
+ Immediate(0x80000000)),
+ Immediate(0));
+
+ Node new_c = Operation(
+ OperationCode::Select, comp_minus_a,
+ SignedOperation(OperationCode::IAdd, is_signed_c, original_c, Immediate(-65536)),
+ original_c);
+ new_c = Operation(
+ OperationCode::Select, comp_minus_b,
+ SignedOperation(OperationCode::IAdd, is_signed_c, new_c, Immediate(-65536)),
+ std::move(new_c));
+
+ return Operation(OperationCode::Select, comp, original_c, std::move(new_c));
}
default:
- UNIMPLEMENTED_MSG("Unhandled XMAD mode: {}", static_cast<u32>(instr.xmad.mode.Value()));
+ UNREACHABLE();
return Immediate(0);
}
}();
@@ -102,18 +134,19 @@ u32 ShaderIR::DecodeXmad(NodeBlock& bb, u32 pc) {
op_c = GetTemporary(1);
// TODO(Rodrigo): Use an appropiate sign for this operation
- Node sum = Operation(OperationCode::IAdd, product, op_c);
+ Node sum = SignedOperation(OperationCode::IAdd, is_signed_a, product, std::move(op_c));
SetTemporary(bb, 2, sum);
sum = GetTemporary(2);
if (is_merge) {
- const Node a = BitfieldExtract(sum, 0, 16);
- const Node b =
- Operation(OperationCode::ILogicalShiftLeft, NO_PRECISE, original_b, Immediate(16));
- sum = Operation(OperationCode::IBitwiseOr, NO_PRECISE, a, b);
+ const Node a = SignedOperation(OperationCode::IBitfieldExtract, is_signed_a, std::move(sum),
+ Immediate(0), Immediate(16));
+ const Node b = SignedOperation(OperationCode::ILogicalShiftLeft, is_signed_b, original_b,
+ Immediate(16));
+ sum = SignedOperation(OperationCode::IBitwiseOr, is_signed_a, a, b);
}
SetInternalFlagsFromInteger(bb, sum, instr.generates_cc);
- SetRegister(bb, instr.gpr0, sum);
+ SetRegister(bb, instr.gpr0, std::move(sum));
return pc;
}