Shader_Ir: Refactor Decompilation process and allow multiple decompilation modes.

src/video_core/shader/compiler_settings.h

@@ -0,0 +1,25 @@
+// Copyright 2019 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "video_core/engines/shader_bytecode.h"
+
+namespace VideoCommon::Shader {
+
+enum class CompileDepth : u32 {
+    BruteForce = 0,
+    FlowStack = 1,
+    NoFlowStack = 2,
+    DecompileBackwards = 3,
+    FullDecompile = 4,
+};
+
+std::string CompileDepthAsString(CompileDepth cd);
+
+struct CompilerSettings {
+    CompileDepth depth;
+};
+
+} // namespace VideoCommon::Shader