Implement shader resource tables (#1165)

* Implement shader resource tables

* fix after rebase + squash

* address some review comments

* fix pipeline_common

* cleanup debug stuff

* switch to using single codegenerator

src/shader_recompiler/ir/passes/srt.h

@@ -0,0 +1,37 @@
+// SPDX-FileCopyrightText: Copyright 2024 shadPS4 Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <boost/container/set.hpp>
+#include <boost/container/small_vector.hpp>
+#include "common/types.h"
+
+namespace Shader {
+
+using PFN_SrtWalker = void PS4_SYSV_ABI (*)(const u32* /*user_data*/, u32* /*flat_dst*/);
+
+struct PersistentSrtInfo {
+    // Special case when fetch shader uses step rates.
+    struct SrtSharpReservation {
+        u32 sgpr_base;
+        u32 dword_offset;
+        u32 num_dwords;
+    };
+
+    PFN_SrtWalker walker_func{};
+    boost::container::small_vector<SrtSharpReservation, 2> srt_reservations;
+    u32 flattened_bufsize_dw = 16; // NumUserDataRegs
+
+    // Special case for fetch shaders because we don't generate IR to read from step rate buffers,
+    // so we won't see usage with GetUserData/ReadConst.
+    // Reserve space in the flattened buffer for a sharp ahead of time
+    u32 ReserveSharp(u32 sgpr_base, u32 dword_offset, u32 num_dwords) {
+        u32 rv = flattened_bufsize_dw;
+        srt_reservations.emplace_back(sgpr_base, dword_offset, num_dwords);
+        flattened_bufsize_dw += num_dwords;
+        return rv;
+    }
+};
+
+} // namespace Shader