shader/memory: Implement ATOMS.ADD.U32

1 files changed, 19 insertions, 0 deletions

diff --git a/src/video_core/shader/decode/memory.cpp b/src/video_core/shader/decode/memory.cpp
index 8cc84e935..7591a715f 100644
--- a/src/video_core/shader/decode/memory.cpp
+++ b/src/video_core/shader/decode/memory.cpp
@@ -16,6 +16,8 @@
 
 namespace VideoCommon::Shader {
 
+using Tegra::Shader::AtomicOp;
+using Tegra::Shader::AtomicType;
 using Tegra::Shader::Attribute;
 using Tegra::Shader::Instruction;
 using Tegra::Shader::OpCode;
@@ -333,6 +335,23 @@ u32 ShaderIR::DecodeMemory(NodeBlock& bb, u32 pc) {
         }
         break;
     }
+    case OpCode::Id::ATOMS: {
+        UNIMPLEMENTED_IF_MSG(instr.atoms.operation != AtomicOp::Add, "operation={}",
+                             static_cast<int>(instr.atoms.operation.Value()));
+        UNIMPLEMENTED_IF_MSG(instr.atoms.type != AtomicType::U32, "type={}",
+                             static_cast<int>(instr.atoms.type.Value()));
+
+        const s32 offset = instr.atoms.GetImmediateOffset();
+        Node address = GetRegister(instr.gpr8);
+        address = Operation(OperationCode::IAdd, std::move(address), Immediate(offset));
+
+        Node memory = GetSharedMemory(std::move(address));
+        Node data = GetRegister(instr.gpr20);
+
+        Node value = Operation(OperationCode::UAtomicAdd, std::move(memory), std::move(data));
+        SetRegister(bb, instr.gpr0, std::move(value));
+        break;
+    }
     case OpCode::Id::AL2P: {
         // Ignore al2p.direction since we don't care about it.