shader: Initial instruction support

src/shader_recompiler/frontend/maxwell/translate/impl/common_encoding.h

@@ -0,0 +1,56 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "common/common_types.h"
+#include "shader_recompiler/exception.h"
+#include "shader_recompiler/frontend/ir/modifiers.h"
+#include "shader_recompiler/frontend/maxwell/translate/impl/common_encoding.h"
+
+namespace Shader::Maxwell {
+
+enum class FpRounding : u64 {
+    RN,
+    RM,
+    RP,
+    RZ,
+};
+
+enum class FmzMode : u64 {
+    None,
+    FTZ,
+    FMZ,
+    INVALIDFMZ3,
+};
+
+inline IR::FpRounding CastFpRounding(FpRounding fp_rounding) {
+    switch (fp_rounding) {
+    case FpRounding::RN:
+        return IR::FpRounding::RN;
+    case FpRounding::RM:
+        return IR::FpRounding::RM;
+    case FpRounding::RP:
+        return IR::FpRounding::RP;
+    case FpRounding::RZ:
+        return IR::FpRounding::RZ;
+    }
+    throw NotImplementedException("Invalid floating-point rounding {}", fp_rounding);
+}
+
+inline IR::FmzMode CastFmzMode(FmzMode fmz_mode) {
+    switch (fmz_mode) {
+    case FmzMode::None:
+        return IR::FmzMode::None;
+    case FmzMode::FTZ:
+        return IR::FmzMode::FTZ;
+    case FmzMode::FMZ:
+        return IR::FmzMode::FMZ;
+    case FmzMode::INVALIDFMZ3:
+        break;
+    }
+    throw NotImplementedException("Invalid FMZ mode {}", fmz_mode);
+}
+
+} // namespace Shader::Maxwell