From faadae5814683d8d9252bdb6cafbdb07ea8619e4 Mon Sep 17 00:00:00 2001
From: ReinUsesLisp <reinuseslisp@airmail.cc>
Date: Mon, 17 Dec 2018 17:30:33 -0300
Subject: [PATCH] shader_decode: Implement ISETP
---
.../shader/decode/integer_set_predicate.cpp | 31 ++++++++++++++++++-
1 file changed, 30 insertions(+), 1 deletion(-)
diff --git a/src/video_core/shader/decode/integer_set_predicate.cpp b/src/video_core/shader/decode/integer_set_predicate.cpp
index 10975c394f..d76b8018c0 100644
--- a/src/video_core/shader/decode/integer_set_predicate.cpp
+++ b/src/video_core/shader/decode/integer_set_predicate.cpp
@@ -11,12 +11,41 @@ namespace VideoCommon::Shader {
using Tegra::Shader::Instruction;
using Tegra::Shader::OpCode;
+using Tegra::Shader::Pred;
u32 ShaderIR::DecodeIntegerSetPredicate(BasicBlock& bb, u32 pc) {
const Instruction instr = {program_code[pc]};
const auto opcode = OpCode::Decode(instr);
- UNIMPLEMENTED();
+ const Node op_a = GetRegister(instr.gpr8);
+
+ const Node op_b = [&]() {
+ if (instr.is_b_imm) {
+ return Immediate(instr.alu.GetSignedImm20_20());
+ } else if (instr.is_b_gpr) {
+ return GetRegister(instr.gpr20);
+ } else {
+ return GetConstBuffer(instr.cbuf34.index, instr.cbuf34.offset);
+ }
+ }();
+
+ // We can't use the constant predicate as destination.
+ ASSERT(instr.isetp.pred3 != static_cast<u64>(Pred::UnusedIndex));
+
+ const Node second_pred = GetPredicate(instr.isetp.pred39, instr.isetp.neg_pred != 0);
+ const Node predicate =
+ GetPredicateComparisonInteger(instr.isetp.cond, instr.isetp.is_signed, op_a, op_b);
+
+ // Set the primary predicate to the result of Predicate OP SecondPredicate
+ const OperationCode combiner = GetPredicateCombiner(instr.isetp.op);
+ const Node value = Operation(combiner, predicate, second_pred);
+ SetPredicate(bb, instr.isetp.pred3, value);
+
+ if (instr.isetp.pred0 != static_cast<u64>(Pred::UnusedIndex)) {
+ // Set the secondary predicate to the result of !Predicate OP SecondPredicate, if enabled
+ const Node negated_pred = Operation(OperationCode::LogicalNegate, predicate);
+ SetPredicate(bb, instr.isetp.pred0, Operation(combiner, negated_pred, second_pred));
+ }
return pc;
}
--
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